Flow regulating valve

Abstract

The utility model belongs to the technical field of valves, and particularly relates to a flow regulating valve, which comprises a valve body and a valve core rotatably arranged in the valve body, a round drift diameter is arranged in the valve body, the valve core is hollow hemispherical or semi-cylindrical, notches are respectively arranged on two sides of the valve core, at least one notch is V-shaped, and when the V-shaped notches are positioned in the round drift diameter, the valve core is in a hollow semi-spherical shape or a hollow semi-cylindrical shape. The valve is fully opened; and when the valve core blocks the circular drift diameter, the valve is closed. The linear relation between the flow and the opening degree of the valve is good, and linear adjustment and control over the flow can be accurately achieved.

Description

Technical field:

[0001] The utility model belongs to the technical field of valves, in particular to a flow regulating valve. Background technology:

[0002] Valves are pipeline accessories used to open and close pipelines, control flow direction, and adjust and control the parameters (temperature, pressure, and flow) of the conveying medium. According to their functions, they can be divided into shut-off valves, check valves, regulating valves, etc. Among them, the flow regulating valve is an intuitive and simple flow regulating control device.

[0003] The existing valves are respectively provided with cylindrical holes on the valve body and the valve core, and the flow control is achieved by adjusting the valve opening to adjust the overlap degree of the two holes. For example, the valve ball disclosed in Chinese utility model patent CN217815092U and Chinese utility model patent CN217355648U has the disadvantage that the relationship between the flow and the valve opening is a monotonically increasing curve, and the slope of the curve decreases as the valve opening increases, and the linear regulation control of the flow cannot be accurately achieved.

[0004] In order to realize linear regulation and control of flow rate, linear regulation is realized by V-hole ball valve core. For example, Chinese invention patent (publication number CN104653806A, application date 2015.02.05, publication date 2015.05.27) discloses an electric linear ball valve with a linear relationship between opening and flow rate, including a V-hole ball valve core, a valve body, and a valve stem. The V-hole ball valve core is a spherical copper component. The center of the V-hole ball valve core is provided with a through hole in the left and right directions, called a V-channel. The left cross-section of the V-channel is circular, and the right cross-section of the V-channel is a combination of a semicircle and a semi-square. The top of the V-hole ball valve core is provided with a rectangular through groove in the front-to-back direction, called a mortise and tenon groove. The valve body is a hollow thin-walled copper component with an inner channel in the left and right directions and a circular cross-section in the center. The left end of the inner channel is the inlet end, and the inner channel is The right end is the outlet end, and the middle part of the inner channel is the valve core chamber; a rectangular platform-shaped flange is provided on the top of the valve body, which is called a flange, and a cylindrical step-shaped through hole in the upper and lower directions and the lower end of which is connected to the valve core chamber is provided in the center of the flange, which is called a stem hole; the valve stem is a copper component in the shape of a cylindrical rod, and a joint for connecting the output end of the motor driver is provided on the upper part of the valve stem, and the cross-section of the joint is oblong, and an external thread is provided on the arc cylindrical surface of the joint; an annular groove is provided on the cylindrical surface of the middle part of the valve stem, which is called a sealing groove; a step with a rectangular cross-section is provided on the lower part of the valve stem, which is called a tenon; the V-hole ball valve core slides and is sealed in the valve core chamber of the valve body, and the sealing groove of the valve stem is embedded with a sealing ring, and the valve stem slides and is sealed in the stem hole of the valve body, and the tenon of the valve stem is buckled and connected with the tenon groove of the V-hole ball valve core, and the joint of the valve stem protrudes above the flange of the valve body. The device has a simple structure and reliable operation. The rotation opening of the V-hole ball valve core 1 is in a corresponding linear relationship with the flow rate, and can replace the electric linear gate valve for regulating the flow rate in the automatic control pipeline. In addition, since the rotation angle opening response speed of the V-hole ball valve core 1 is higher than the lifting opening response speed of the gate valve, the overall self-control response speed of the automatic control pipeline system can be improved, so that the electric linear valve used for flow regulation in the automatic control pipeline has a simplified structure, a reduced size, a reduced cost, and a higher response speed.

[0005] Another example is a Chinese utility model patent (announcement number CN217951376U, application date 2022.07.06, announcement date 2022.12.02) that discloses a V-type regulating valve with a temperature measuring hole, including a valve body, a rotatable valve stem in the longitudinal axis of the valve body, a V-shaped valve ball (i.e., valve core) arranged in the cavity of the valve body, and a temperature measuring PT hole arranged at the bottom of the valve body, wherein the temperature measuring PT hole is integrally formed with the valve body. The opening surface of the V-shaped valve ball: one side opening surface is "O" type, and the other side opening surface is "" type. The valve ball adopts a V-shaped design, and the original valve ball has "O" type openings on both sides, and is changed to one side with "O" type opening and one side with "" type opening; when the valve body is opened, the valve ball "" surface should open the small end first, and the valve core rotates counterclockwise; when the valve is closed, the valve ball surface should close the large end first, and the valve core rotates clockwise, which greatly improves the relationship between flow and opening.

[0006] The disadvantage of the above V-shaped valve is that the linear relationship between the flow rate and the valve opening is mainly achieved by the overlap between the V-shaped hole of the valve core and the hole of the valve body, but the start and end of the valve opening from open to closed or from closed to open have a curve relationship (see the appendix of the specification of utility model patent CN217951376U). Figure 4 , 5 ), that is, there are two sections where the flow rate and valve opening are not linearly related. The reason for this phenomenon is that the degree of opening and closing at the inlet end of the valve body (that is, the degree of overlap between the circular hole of the valve core and the hole of the valve body) will affect the flow rate at the outlet end of the valve body. Summary of the invention:

[0007] The utility model aims to provide a flow control valve, which has a good linear relationship between flow and valve opening and can accurately realize linear regulation and control of flow.

[0008] The utility model is achieved in this way:

[0009] A flow regulating valve comprises a valve body and a valve core rotatably arranged in the valve body, wherein a circular path is arranged in the valve body, the valve core is hollow hemispherical or semi-cylindrical, notches are arranged on both sides of the valve core, and at least one notch is V-shaped, when the V-shaped notch is located in the circular path, the valve is fully open; when the valve core blocks the circular path, the valve is closed.

[0010] In the above-mentioned flow control valve, the valve core is semi-cylindrical, and an annular limiting portion for limiting the position against the valve body is provided at the lower end of the valve core, and a circular baffle is provided at the upper end.

[0011] In the above-mentioned flow control valve, a valve stem is provided above the circular baffle, a valve cap connected to the valve body is sleeved outside the valve stem, and a magnetic lock assembly is provided at the upper end of the valve cap.

[0012] The above-mentioned flow control valve also includes a handle for twisting the valve stem.

[0013] In the above-mentioned flow regulating valve, a flow gear mark is provided on the outer wall of the valve cap, an arrow mark is provided on the upper end face of the valve stem, a positioning strip is provided on the valve body, and a mounting groove matched with the positioning strip is provided on the valve cap.

[0014] In the above-mentioned flow control valve, a mounting plate located above the valve body is provided on the outer periphery of the valve cap, the screws pass through the mounting plate and are screwed to the valve body, and the mounting groove is provided on the mounting plate.

[0015] In the above-mentioned flow regulating valve, the magnetic lock assembly includes an inner cover arranged outside the valve cap and an outer cover arranged outside the inner cover, a ball is installed at the lower end of the inner cover, and a spring and a magnet are installed at the upper end, an annular groove is provided at the outer periphery of the valve cap, a protruding convex ring is provided on the inner side of the outer cover, the outer end of the magnet extends out of the inner cover and abuts against the upper end surface of the convex ring, and the lower end of the convex ring abuts against the ball so that the inner side of the ball is embedded in the annular groove.

[0016] In the above-mentioned flow regulating valve, a spring 2 is arranged between the outer cover and the inner cover, and the spring 2 causes the outer cover to move upward relative to the inner cover.

[0017] In the above-mentioned flow control valve, the shape of the notch can be: both notches are V-shaped and symmetrically arranged.

[0018] In the above-mentioned flow control valve, the shape of the notch can also be: one notch is V-shaped, and the other notch is semicircular and coaxially arranged with the circular diameter, and the semicircular notch has the same diameter as the circular diameter.

[0019] In the above-mentioned flow regulating valve, the V-shaped opening faces the horizontal direction, and the V-shaped notch includes an upper side wall and a lower side wall, and the upper side wall and the lower side wall are transitioned by an arc surface one, the upper side wall is an arc surface convex downward, and the upper end of the upper side wall is provided with an arc surface two convex upward, the lower side wall is an arc surface convex upward, and the lower end of the lower side wall is provided with an arc surface three convex downward.

[0020] In the above-mentioned flow control valve, a limiting structure is provided between the valve core and the valve body to limit the rotation of the valve core within a range of 90°.

[0021] In the above-mentioned flow control valve, the limiting structure may be: the limiting structure includes a protrusion arranged at the lower end of the valve core and a limiting groove arranged on the valve body.

[0022] In the above-mentioned flow control valve, the limiting structure may also be: the limiting structure includes a protrusion arranged on the valve body and a groove arranged at the lower end of the valve core.

[0023] In the above-mentioned flow control valve, the valve core, the annular limiting portion and the circular baffle are an integrated structure, and the valve cap and the mounting plate are an integrated structure.

[0024] The outstanding advantages of the utility model compared with the prior art are:

[0025] 1. The valve core of the utility model is hemispherical or semi-cylindrical, and the valve core can only block the inlet end or outlet end of the circular diameter, that is, the flow rate is only related to the overlap degree of the valve core and one end of the circular diameter, and the linear relationship between the flow rate and the valve opening is good, which can accurately realize the linear regulation control of the flow rate;

[0026] 2. A valve stem is provided above the circular baffle of the utility model, and a valve cap connected to the valve body is sleeved on the valve stem. A magnetic lock assembly is provided on the upper end of the valve cap to achieve flow control and effectively prevent other users from adjusting the flow;

[0027] 3. The outer wall of the valve cap of the utility model is provided with a flow position mark, and the upper end face of the valve stem is provided with an arrow mark, so that the valve opening can be clearly and intuitively known. Description of the drawings:

[0028] Figure 1 It is a three-dimensional diagram of the utility model;

[0029] Figure 2 It is a cross-sectional view of the utility model;

[0030] Figure 3 It is an exploded view of the utility model;

[0031] Figure 4 It is a front view of the valve core of the utility model;

[0032] Figure 5 It is a three-dimensional diagram of the valve core of the utility model.

[0033] Figure numerals: 1. valve body; 2. valve core; 3. circular diameter; 4. notch; 5. annular limit portion; 6. circular baffle; 7. valve stem; 8. valve cap; 9. flow range mark; 10. arrow mark; 11. positioning strip; 12. mounting groove; 13. inner cover; 14. outer cover; 15. ball; 16. spring one; 17. magnet; 18. annular groove; 19. convex ring; 20. upper side wall; 21. lower side wall; 22. arc surface one; 23. arc surface two; 24. arc surface three; 25. bump; 26. limit groove; 27. handle; 28. mounting plate; 29. ​​screw; 30. spring two. Specific implementation method:

[0034] The present invention is further described below with reference to specific embodiments. Figure 1 —5:

[0035] A flow regulating valve comprises a valve body 1 and a valve core 2 rotatably arranged in the valve body 1, wherein a circular diameter 3 is arranged in the valve body 1, and the valve core 2 is hollow hemispherical or semi-cylindrical, and notches 4 are respectively arranged on both sides of the valve core 2, and at least one notch 4 is V-shaped. When the V-shaped notch 4 is located in the circular diameter 3, the valve is fully opened; when the valve core 2 blocks the circular diameter 3, the valve is closed.

[0036] like Figure 1-5 As shown, the valve core 2 of the utility model is hemispherical or semi-cylindrical, and the valve core 2 can only block the inlet end or the outlet end of the circular diameter 3, that is, the flow rate is only related to the overlap degree of the valve core 2 and one end of the circular diameter 3. The flow rate has a good linear relationship with the valve opening, and can accurately realize linear regulation and control of the flow rate.

[0037] The specific structure of the valve core 2: Figure 2-5 As shown, the valve core 2 is semi-cylindrical, and the lower end of the valve core 2 is provided with an annular limiting portion 5 that contacts and limits the valve body 1, and the upper end is provided with a circular baffle 6. The setting of the annular limiting portion 5 allows the valve core 2 to rotate smoothly. The setting of the circular baffle 6 prevents leakage and facilitates the setting of the valve stem 7.

[0038] In order to achieve traffic control and prevent other users from adjusting traffic, such as Figure 1-3 As shown, a valve stem 7 is provided above the circular baffle 6, and a valve cap 8 connected to the valve body 1 is sleeved on the valve stem 7, and a magnetic lock assembly is provided on the upper end of the valve cap 8.

[0039] In order to facilitate the rotation of the valve stem 7, a handle 27 for twisting the valve stem 7 is also included. After the magnetic lock assembly is disassembled, the handle 27 is sleeved outside the valve stem 7, and the handle 27 is rotated to drive the valve stem to rotate.

[0040] In order to clearly and intuitively know the valve opening, a flow gear mark 9 is provided on the outer wall of the valve bonnet 8, an arrow mark 10 is provided on the upper end face of the valve stem 7, a positioning strip 11 is provided on the valve body 1, and a mounting groove 12 matched with the positioning strip 11 is provided on the valve bonnet 8 to limit the installation position of the valve bonnet 8 so that the flow gear mark 9 on the valve bonnet 8 can correspond to the arrow mark 10 on the valve stem 7.

[0041] Furthermore, the flow gear mark 9 is a number 0, 1, 2, 3. The number 0 indicates that the valve is closed, and the number 3 indicates that the valve is fully open.

[0042] Installation structure of the valve bonnet 8 : The outer periphery of the valve bonnet 8 is provided with a mounting plate 28 located above the valve body 1 , the screws 29 pass through the mounting plate 28 and are screwed to the valve body 1 , and the mounting groove 12 is provided on the mounting plate 28 .

[0043] Structure of the magnetic lock assembly: The magnetic lock assembly includes an inner cover 13 arranged outside the valve bonnet 8 and an outer cover 14 arranged outside the inner cover 13, a ball 15 is installed at the lower end of the inner cover 13, and a spring 16 and a magnet 17 are installed at the upper end, an annular groove 18 is provided on the outer periphery of the valve bonnet 8, and a protruding convex ring 19 is provided on the inner side of the outer cover 14, the outer end of the magnet 17 extends out of the inner cover 13 and abuts against the upper end surface of the convex ring 19, and the lower end of the convex ring 19 abuts against the ball 15 so that the inner side of the ball 15 is embedded in the annular groove 18.

[0044] When the magnetic lock key is aligned and placed on the outer cover 14, the magnetic part arranged in the magnetic lock key compresses the magnet 17 and pushes the spring 16 toward the inner cover 13, and the outer cover 14 can move upward relative to the inner cover 13. When the lower end of the inner ring 19 does not abut against the ball 15, the ball 15 can leave the annular groove 18, move the inner cover 13 upward, and remove the magnetic lock assembly.

[0045] In order to realize the automatic upward movement of the outer cover 14 relative to the inner cover 13 and facilitate the removal of the magnetic lock assembly, a spring 2 30 is provided between the outer cover 14 and the inner cover 13 to enable the outer cover 14 to move upward relative to the inner cover 13 with elastic force.

[0046] The shape of the gap 4: Figure 2-5 As shown, the two notches 4 are both V-shaped and symmetrically arranged to facilitate processing and assembly.

[0047] The structure of the V-shaped notch 4 is as follows: Figure 2-5 As shown, the V-shaped opening faces the horizontal direction, and the V-shaped notch 4 includes an upper side wall 20 and a lower side wall 21, and the upper side wall 20 and the lower side wall 21 are transitioned by an arc surface 1 22. The upper side wall 20 is an arc surface convex downward, and an arc surface 23 convex upward is provided at the upper end of the upper side wall 20. The lower side wall 21 is an arc surface convex upward, and an arc surface 3 convex downward is provided at the lower end of the lower side wall 21.

[0048] In order to limit the rotation range of the valve core 2, as shown in FIG. Figure 2-5 As shown, a limiting structure is provided between the valve core 2 and the valve body 1 to limit the rotation of the valve core 2 within a range of 90°.

[0049] Structure of the limiting structure: The limiting structure includes a protrusion 25 arranged at the lower end of the valve core 2 and a limiting groove 26 arranged on the valve body 1.

[0050] Furthermore, the valve core 2, the annular limiting portion 5 and the circular baffle 6 are an integrated structure, and the valve cap 8 and the mounting plate 28 are an integrated structure.

[0051] The above embodiment is only one of the preferred embodiments of the present utility model, and is not intended to limit the scope of implementation of the present utility model. Therefore, any equivalent changes made based on the shape, structure, and principle of the present utility model should be included in the protection scope of the present utility model.

Claims

1. A flow control valve, comprising a valve body (1) and a valve core (2) rotatably arranged in the valve body (1), wherein a circular diameter (3) is arranged in the valve body (1), and characterized in that: The valve core (2) is in the shape of a hollow hemisphere or a semi-cylinder. Notches (4) are respectively provided on both sides of the valve core (2), and at least one notch (4) is V-shaped. When the V-shaped notch (4) is located in the circular path (3), the valve is fully open; when the valve core (2) blocks the circular path (3), the valve is closed.

2. A flow control valve according to claim 1, characterized in that: The valve core (2) is semi-cylindrical, and the lower end of the valve core (2) is provided with an annular limiting portion (5) for contacting and limiting the valve body (1), and the upper end is provided with a circular baffle (6).

3. A flow control valve according to claim 2, characterized in that: A valve stem (7) is provided above the circular baffle (6), a valve cap (8) connected to the valve body (1) is sleeved outside the valve stem (7), and a magnetic lock assembly is provided at the upper end of the valve cap (8).

4. A flow control valve according to claim 3, characterized in that: The outer wall of the valve cap (8) is provided with a flow position mark (9), the upper end surface of the valve stem (7) is provided with an arrow mark (10), the valve body (1) is provided with a positioning strip (11), and the valve cap (8) is provided with a mounting groove (12) adapted to the positioning strip (11).

5. A flow control valve according to claim 3, characterized in that: The magnetic lock assembly comprises an inner cover (13) arranged outside the valve cap (8) and an outer cover (14) arranged outside the inner cover (13); a ball (15) is installed at the lower end of the inner cover (13), and a spring (16) and a magnet (17) are installed at the upper end; an annular groove (18) is provided on the outer periphery of the valve cap (8); a protruding convex ring (19) is provided on the inner side of the outer cover (14); the outer end of the magnet (17) extends out of the inner cover (13) and abuts against the upper end surface of the convex ring (19); the lower end of the convex ring (19) abuts against the ball (15) so that the inner side of the ball (15) is embedded in the annular groove (18).

6. A flow control valve according to claim 1, characterized in that: The two notches (4) are both V-shaped and symmetrically arranged.

7. A flow control valve according to claim 1, characterized in that: The V-shaped opening faces the horizontal direction. The V-shaped notch (4) comprises an upper side wall (20) and a lower side wall (21). The upper side wall (20) and the lower side wall (21) are transitioned by an arc surface 1 (22). The upper side wall (20) is an arc surface convex downward. An arc surface 2 (23) convex upward is provided at the upper end of the upper side wall (20). The lower side wall (21) is an arc surface convex upward. An arc surface 3 (24) convex downward is provided at the lower end of the lower side wall (21).

8. A flow control valve according to claim 1, characterized in that: A limiting structure is provided between the valve core (2) and the valve body (1) for limiting the rotation of the valve core (2) within a range of 90°.

9. A flow control valve according to claim 8, characterized in that: The limiting structure comprises a protrusion (25) arranged at the lower end of the valve core (2) and a limiting groove (26) arranged on the valve body (1).

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