Precise valve capable of improving flow and machining process thereof

Abstract

The invention discloses a precise valve capable of improving flow and a machining process thereof, and particularly relates to the technical field of precise valves.The precise valve comprises a valve seat, a water inlet and a water outlet are formed in the valve seat, a sealing gasket is arranged in the valve seat, a diaphragm is connected to the top end of the sealing gasket in a pressed mode, and a sliding block seat is arranged at the top end of the diaphragm; a locking ring sleeves the sliding block seat, the bottom end of the locking ring is rotationally connected with the valve seat, a sliding block body is arranged at the bottom end in the sliding block seat in a sliding manner, a ball is supported at the top end of the sliding block body, a valve rod is arranged at the top end of the ball, the bottom end of the valve rod is rotationally connected into the sliding block seat, and a locking sleeve sleeves the top end of the valve rod in a sliding manner; the bottom end of the locking sleeve is screwed to the top of the sliding block seat, and a knob is installed at the top end of the valve rod. The valve rod and the sliding block seat are connected and matched through the double-line British system threads, large-flow control can be rapidly and accurately carried out without changing the size of the valve, the overall size is small, the structure is simple, and the manufacturing cost is low.

Description

Technical Field

[0001] The present invention relates to the technical field of precision valves, and more specifically, to a precision valve capable of increasing flow rate and a processing technology thereof. Background Art

[0002] In the actual use of manual diaphragm valves in factory workshops on the market, the valve stem plays a vital role as a key component for controlling fluid flow. In the structural design and manufacturing of traditional valves, the choice of valve stem thickness limits the selection range of its standard threads in terms of large diameter, medium diameter and small diameter. In some working conditions with high flow requirements, it is not intended to change any size of the manual diaphragm valve to meet the demand for a large stroke (90° rotation to 1.8mm downward), so that large flows can be adjusted quickly and accurately.

[0003] Traditional valves need to use threads with larger pitches. When the threads are larger, the volume of the corresponding parts will increase as a whole, and the volume of the valve will increase accordingly, which will affect the installation space and waste space. In order to meet the needs of large flow control, that is, to develop and design a precision valve with fast, high-precision large flow control, therefore, a precision valve that can increase the flow rate and its processing technology are proposed. Summary of the invention

[0004] In order to overcome the above defects of the prior art, the present invention provides a precision valve capable of increasing flow rate and a processing technology thereof, so as to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a precision valve capable of increasing flow rate, comprising a valve seat, the valve seat being provided with a water inlet and a drain, a sealing gasket being provided inside the valve seat, a diaphragm being crimped on the top end of the sealing gasket, a slider seat being provided on the top end of the diaphragm, a locking ring being sleeved on the slider seat, a bottom end of the locking ring being screwed to the valve seat, a slider body being slidably provided at the bottom end of the slider seat, a ball bearing being supported at the top end of the slider body, a valve stem being provided at the top end of the ball bearing, the bottom end of the valve stem being screwed inside the slider seat, a locking sleeve being slidably sleeved on the top end of the valve stem, the bottom end of the locking sleeve being screwed to the top of the slider seat, and a knob being installed at the top end of the valve stem.

[0006] Preferably, a through opening is opened in the middle of the valve body, the through opening is connected to the water inlet, a valve opening piece is interference fit on the outer side of the top end of the through opening, an annular overflow groove is formed between the outer side of the valve opening piece and the valve body, and the annular overflow groove is connected to the drain outlet.

[0007] Preferably, one water inlet is provided, and two drain outlets are provided, and both drain outlets are connected to the annular overflow groove.

[0008] Preferably, the slider seat includes a pressure head, a connecting cylinder, a locking cylinder, a sealing groove and a threaded cavity. A connecting cylinder is provided at the top of the pressure head, a locking cylinder is connected to the top of the connecting cylinder, an annular sealing groove is provided on the inner wall of the top of the locking cylinder, and a threaded cavity is opened at the bottom of the sealing groove.

[0009] Preferably, a sliding cavity with an inner diameter smaller than the inner diameter of the threaded cavity is provided at the bottom of the threaded cavity, an arc-shaped groove is provided at the bottom of the sliding cavity, the bottom end of the valve stem is screwed into the threaded cavity, the slider body is slidably arranged at the bottom of the sliding cavity, and the diaphragm is arranged at the bottom of the arc-shaped groove.

[0010] Preferably, the valve stem comprises an upper rod body, a lower screw rod and a ball groove, the top end of the upper rod body is connected and fixed to the knob, the bottom end of the upper rod body is provided with a lower screw rod, and the bottom end of the lower screw rod is provided with a ball groove.

[0011] Preferably, the lower screw is screwed into the threaded cavity, and the lower screw and the threaded cavity are connected by a double-line English thread.

[0012] Preferably, a ball is pressed onto the bottom of the ball groove, and the ball is rollingly connected to the ball groove.

[0013] Preferably, the upper rod body is coaxially inserted in the connecting tube, a sealing ring is sleeved on the upper rod body, the sealing ring is pressed down in the sealing groove, a locking sleeve is screwed on the connecting tube, and the locking sleeve is connected to the top of the sealing ring.

[0014] A processing technology for a precision valve capable of increasing flow rate, used for assembling the above-mentioned precision valve capable of increasing flow rate, comprises the following steps:

[0015] S1: a double thread groove is formed on the inner wall of the processed slider seat, and the outer bottom of the valve stem is tapped to form a double thread screw structure, so that the valve stem and the slider seat can form a double-line British thread connection;

[0016] S2: First, the valve port is interference-fitted at the opening opened inside the valve seat, and then a sealing gasket is placed in the valve seat, and then a diaphragm is placed on the sealing gasket;

[0017] S3: Then, the slider seat is inserted into the valve seat, and after the edge of the diaphragm is crimped, the locking ring is sleeved onto the slider seat, so that the bottom end of the locking ring is inserted into the valve seat and screwed and fixed, and the bottom of the slider seat is pressed and fixed;

[0018] S4: Then, the slider body is placed into the slider seat, and the ball bearing is placed into the slider seat. After that, the valve stem is screwed into the slider seat, and the sealing ring is sleeved on the valve stem and slid down to the top of the slider seat.

[0019] S5: Then, the locking sleeve is sleeved on the top of the valve stem and screwed and fixed to the slider seat, and then the knob is installed on the top of the valve stem to complete the installation of the valve;

[0020] S6: Finally, the valve is tested for sealing and the valve assembly process is completed.

[0021] Technical effects and advantages of the present invention:

[0022] 1. The valve stem and the slider seat are connected with double-line British threaded connections. Without changing the volume of the valve, the valve stem can be adjusted to a height of 1.8 mm by rotating the knob 90°, thereby enabling fast and accurate adjustment of large flow rates.

[0023] 2. When the valve is in the open state, the medium is discharged from the water inlet into the valve seat, and the sealing gasket seals the top, so that the medium enters the annular overflow groove, and then flows through the drain port from the annular overflow groove to be discharged. When the valve is closed, the sealing gasket is pressed onto the valve port to seal the through port, thereby blocking the connection between the water inlet and each drain port, so as to achieve the closure of the valve and block the transportation of the medium.

[0024] 3. By turning the knob, the upper rod body can be connected to the lower screw rod for rotation. Since the lower screw rod is spirally connected to the slider seat, the lower screw rod can be lifted or lowered during its rotation, thereby controlling the opening and closing of the valve. The operation is simple and convenient.

[0025] 4. By using a double-line British thread connection between the lower screw and the threaded cavity, the stroke can be increased without changing the thread pitch, thus avoiding the need to use a larger pitch thread to increase the flow rate of traditional valves. When the thread is larger, the volume of the corresponding parts will increase as a whole, and the volume of the valve will increase accordingly, thus affecting the installation space and wasting space. In this way, not only space is saved and the overall volume of the valve is avoided, but also the adjustment is smooth and convenient, reducing the overall manufacturing cost.

[0026] 5. When adjusting the opening and closing of the valve, the valve stem rotates and rises, causing the ball groove to press down on the ball, and the ball can rotate along with it, thereby reducing the rotational friction and improving the smoothness of the opening and closing of the regulating valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of the present invention.

[0028] Figure 2 It is a schematic diagram of the cross-sectional structure of the present invention.

[0029] Figure 3 It is a schematic structural diagram of the valve stem of the present invention.

[0030] Figure 4 It is a structural schematic diagram of the slider seat of the present invention.

[0031] Figure 5 It is a schematic diagram of the cross-sectional structure of the slider seat of the present invention.

[0032] The accompanying drawings are marked as follows: 1. valve seat; 2. water inlet; 3. drain outlet; 4. locking ring; 5. slider seat; 501. pressure head; 502. connecting tube; 503. locking tube; 504. sealing groove; 505. threaded cavity; 6. locking sleeve; 7. knob; 8. valve stem; 801. upper rod body; 802. lower screw; 803. ball groove; 9. ball; 10. slider body; 11. diaphragm; 12. sealing gasket. DETAILED DESCRIPTION

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] As attached Figure 1-5 A precision valve for increasing flow rate shown in the figure comprises a valve seat 1, the valve seat 1 is provided with a water inlet 2 and a drain outlet 3, a sealing gasket 12 is provided inside the valve seat 1, a diaphragm 11 is crimped on the top end of the sealing gasket 12, a slider seat 5 is provided on the top end of the diaphragm 11, a locking ring 4 is sleeved on the slider seat 5, the bottom end of the locking ring 4 is screwed to the valve seat 1, a slider body 10 is slidably provided at the bottom end of the slider seat 5, a ball 9 is supported on the top end of the slider body 10, a valve stem 8 is provided on the top end of the ball 9, the bottom end of the valve stem 8 is screwed inside the slider seat 5, a locking sleeve 6 is slidably sleeved on the top end of the valve stem 8, the bottom end of the locking sleeve 6 is screwed to the top of the slider seat 5, and a knob 7 is installed on the top end of the valve stem 8.

[0035] During specific implementation, by turning the knob 7, the valve stem 8 is rotated. Since the valve stem 8 is spirally connected to the slider seat 5, the valve stem 8 is lifted and lowered in the slider seat 5. When the valve stem 8 rotates and descends, the ball 9 can be pressed downward, so that the ball 9 presses down the slider body 10. The slider body 10 descends and squeezes the diaphragm 11, causing the diaphragm 11 to deform and squeeze the sealing gasket 12, so that the sealing gasket 12 can be crimped onto the valve port part to seal the through port, thereby blocking the connection between the water inlet 2 and the drain port 3 and achieving the closure of the valve. During the rotation process, since the valve stem 8 and the slider seat 5 are connected by a double-line imperial thread, there is no need to change the volume of the valve. The valve stem 8 can be adjusted to a lifting height of 1.8 mm by rotating the knob 7 90°, thereby enabling fast and accurate adjustment of large flow rates.

[0036] A through opening is opened in the middle of the valve body 1, and the through opening is connected to the water inlet 2. A valve mouth piece is interference fit on the outer side of the top of the through opening, and an annular overflow groove is formed between the outer side of the valve mouth piece and the valve body 1, and the annular overflow groove is connected to the drain port 3.

[0037] The water inlet 2 is provided with one, and the water outlets 3 are provided with two, and the two water outlets 3 are both connected to the annular overflow groove.

[0038] In specific implementation, when the valve is in an open state, the medium is discharged from the water inlet 2 into the valve seat 1, and the sealing gasket 12 seals the top, so that the medium enters the annular overflow groove, and then flows through the drain port 3 from the annular overflow groove to be discharged. When the valve is closed, the sealing gasket 12 is pressed onto the valve port piece to seal the through port, thereby blocking the connection between the water inlet 2 and each drain port 3, so that the valve can be closed and the medium transportation can be blocked.

[0039] The slider seat 5 includes a pressing head 501, a connecting cylinder 502, a locking cylinder 503, a sealing groove 504 and a threaded cavity 505. The pressing head 501 is provided with a connecting cylinder 502 at the top, the connecting cylinder 502 is connected with a locking cylinder 503 at the top, an annular sealing groove 504 is provided on the inner wall of the top of the locking cylinder 503, and a threaded cavity 505 is opened at the bottom of the sealing groove 504.

[0040] A sliding cavity with an inner diameter smaller than that of the threaded cavity 505 is provided at the bottom of the threaded cavity 505, an arc-shaped groove is provided at the bottom of the sliding cavity, the bottom end of the valve stem 8 is screwed into the threaded cavity 505, the slider body 10 is slidably arranged at the bottom of the sliding cavity, and the diaphragm 11 is arranged at the bottom of the arc-shaped groove.

[0041] During specific implementation, by rotating the valve stem 8 by 90°, the valve stem 8 can be screwed down 1.8 mm in the threaded cavity 505, so that the ball 9 can be pressed down, and the ball 9 presses down the slider body 10. The slider body 10 slides down along the inner wall of the sliding cavity and squeezes the diaphragm 11, so that the diaphragm 11 deforms downward to squeeze the sealing gasket 12, so that the valve can be closed. Conversely, when the valve stem 8 rises, the diaphragm 11 can be elastically restored, and the sealing gasket 12 can be restored accordingly, so that the valve can be opened.

[0042] The valve stem 8 includes an upper rod body 801 , a lower screw rod 802 and a ball groove 803 . The top end of the upper rod body 801 is connected and fixed to the knob 7 . The bottom end of the upper rod body 801 is provided with a lower screw rod 802 . The bottom end of the lower screw rod 802 is provided with a ball groove 803 .

[0043] In specific implementation, by rotating the knob 7, the upper rod body 801 can be connected to the lower screw rod 802 for rotation. Since the lower screw rod 802 is spirally connected to the slider seat 5, the lower screw rod 802 can be lifted or lowered during its rotation, thereby controlling the opening and closing of the valve, which is simple and convenient to operate.

[0044] The lower screw rod 802 is screwed into the threaded cavity 505 , and the lower screw rod 802 and the threaded cavity 505 are connected by a double-line British thread.

[0045] In specific implementation, by using the double-line British thread connection method between the lower screw 802 and the threaded cavity 505, the stroke can be increased without changing the thread pitch, thereby avoiding the need to select a thread with a larger pitch to increase the flow rate of the traditional valve. When the thread is larger, the volume of the corresponding parts will increase as a whole, and the volume of the valve will increase accordingly, thus affecting the installation space and wasting space. In this way, not only space is saved and the overall volume of the valve is avoided, but also the adjustment is smooth and convenient, reducing the overall manufacturing cost.

[0046] A ball 9 is pressed onto the bottom of the ball groove 803 , and the ball 9 is in rolling connection with the ball groove 803 .

[0047] In specific implementation, when adjusting the opening and closing of the valve, the valve stem 8 rotates and rises, so that the ball groove 803 presses down the ball 9, and the ball 9 can rotate along with it, thereby reducing the rotational friction, thereby improving the smoothness of adjusting the opening and closing of the valve.

[0048] The upper rod body 801 is coaxially inserted into the connecting tube 502. A sealing ring is sleeved on the upper rod body 801. The sealing ring is pressed down into the sealing groove 504. A locking sleeve 6 is screwed on the connecting tube 502. The locking sleeve 6 is connected to the top of the sealing ring.

[0049] During specific implementation, the sealing ring is pressed and fixed by the locking sleeve 6, so that the connection between the upper rod body 801 and the connecting tube 502 can be sealed, thereby improving the sealing performance of the valve.

[0050] A processing technology for a precision valve capable of increasing flow rate comprises the following steps:

[0051] S1: a double thread groove is formed on the inner wall of the processed slider seat 5, and the bottom of the valve stem 8 is tapped to form a double thread screw structure, so that the valve stem 8 and the slider seat 5 can form a double-line British thread connection;

[0052] S2: First, the valve port piece is interference-fitted at the opening opened inside the valve seat 1, and then a sealing gasket 12 is placed inside the valve seat 1, and then a diaphragm 11 is placed on the sealing gasket 12;

[0053] S3: Then, the slider seat 5 is inserted into the valve seat 1, and after the edge of the diaphragm 11 is crimped, the locking ring 4 is sleeved onto the slider seat 5, so that the bottom end of the locking ring 4 is inserted into the valve seat 1 and screwed and fixed, and the bottom of the slider seat 5 is pressed and fixed;

[0054] S4: Then, the slider body 10 is placed in the slider seat 5, and the ball 9 is placed in the slider seat 5. After that, the valve stem 8 is screwed into the slider seat 5, and the sealing ring is sleeved on the valve stem 8 and slid down to the top of the slider seat 5;

[0055] S5: Then, the locking sleeve 6 is sleeved on the top of the valve stem 8 and screwed and fixed to the slider seat 5, and then the knob 7 is installed on the top of the valve stem 8 to complete the installation of the valve;

[0056] S6: Finally, the valve is tested for sealing and the valve assembly process is completed.

[0057] Finally, a few points should be explained: First, in the description of the present invention, it should be noted that, unless otherwise specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, which may refer to mechanical connection or electrical connection, or internal communication between two components, or direct connection. "upper", "lower", "left", "right", etc. are only used to indicate relative positional relationships. When the absolute position of the object being described changes, the relative positional relationship may change;

[0058] Secondly: In the drawings of the embodiments disclosed in the present invention, only the structures related to the embodiments disclosed in the present invention are involved, and other structures can refer to the general design. In the absence of conflict, the same embodiment and different embodiments of the present invention can be combined with each other;

[0059] Finally: The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A precision valve capable of increasing flow rate, comprising a valve seat (1), characterized in that: The valve seat (1) is provided with a water inlet (2) and a water outlet (3); a sealing gasket (12) is provided inside the valve seat (1); a diaphragm (11) is pressed onto the top end of the sealing gasket (12); a slider seat (5) is provided at the top end of the diaphragm (11); a locking ring (4) is sleeved on the slider seat (5); the bottom end of the locking ring (4) is screwed to the valve seat (1); a slider body (10) is slidably provided at the bottom end of the slider seat (5); a ball (9) is supported at the top end of the slider body (10); a valve stem (8) is provided at the top end of the ball (9); the bottom end of the valve stem (8) is screwed into the slider seat (5); a locking sleeve (6) is slidably sleeved on the top end of the valve stem (8); the bottom end of the locking sleeve (6) is screwed to the top of the slider seat (5); a knob (7) is installed at the top end of the valve stem (8).

2. A precision valve capable of increasing flow rate according to claim 1, characterized in that: A through opening is provided in the middle of the valve body (1), the through opening is communicated with the water inlet (2), a valve opening piece is interference-fitted on the outer side of the top end of the through opening, an annular overflow groove is formed between the outer side of the valve opening piece and the valve body (1), and the annular overflow groove is communicated with the drain outlet (3).

3. A precision valve capable of increasing flow rate according to claim 2, characterized in that: The water inlet (2) is provided with one, and the water outlets (3) are provided with two, and the two water outlets (3) are both communicated with the annular overflow groove.

4. A precision valve capable of increasing flow rate according to claim 3, characterized in that: The slider seat (5) comprises a pressure head (501), a connecting cylinder (502), a locking cylinder (503), a sealing groove (504) and a threaded cavity (505); the top of the pressure head (501) is provided with a connecting cylinder (502); the top of the connecting cylinder (502) is connected to the locking cylinder (503); the inner wall of the top of the locking cylinder (503) is provided with an annular sealing groove (504); and the bottom of the sealing groove (504) is provided with a threaded cavity (505).

5. A precision valve capable of increasing flow rate according to claim 4, characterized in that: A sliding cavity with an inner diameter smaller than the inner diameter of the threaded cavity (505) is provided at the bottom of the sliding cavity, an arc-shaped groove is provided at the bottom of the sliding cavity, the bottom end of the valve stem (8) is screwed into the threaded cavity (505), the slider body (10) is slidably arranged at the bottom of the sliding cavity, and the diaphragm (11) is arranged at the bottom of the arc-shaped groove.

6. A precision valve capable of increasing flow rate according to claim 5, characterized in that: The valve stem (8) comprises an upper stem body (801), a lower screw rod (802) and a ball groove (803); the top end of the upper stem body (801) is connected and fixed to the knob (7); the bottom end of the upper stem body (801) is provided with a lower screw rod (802); and the bottom end of the lower screw rod (802) is provided with a ball groove (803).

7. A precision valve capable of increasing flow rate according to claim 6, characterized in that: The lower screw rod (802) is screwed into the threaded cavity (505), and the lower screw rod (802) and the threaded cavity (505) are connected by a double-line British thread.

8. A precision valve capable of increasing flow rate according to claim 7, characterized in that: A ball (9) is pressed onto the bottom of the ball groove (803), and the ball (9) is connected to the ball groove (803) in a rolling manner.

9. A precision valve capable of increasing flow rate according to claim 8, characterized in that: The upper rod body (801) is coaxially inserted into the connecting tube (502), a sealing ring is sleeved on the upper rod body (801), and the sealing ring is pressed down into the sealing groove (504). A locking sleeve (6) is screwed on the connecting tube (502), and the locking sleeve (6) is connected to the top of the sealing ring.

10. A processing technology for a precision valve capable of increasing flow rate, used for assembling the precision valve capable of increasing flow rate as claimed in claim 9, characterized in that: The following steps are involved: S1: a double thread groove is formed on the inner wall of the processed slider seat (5), and the bottom of the valve stem (8) is tapped to form a double thread screw structure, so that the valve stem (8) and the slider seat (5) can form a double-line British thread connection; S2: First, the valve port member is interference-fitted at the opening opened inside the valve seat (1), then a sealing gasket (12) is placed inside the valve seat (1), and then a diaphragm (11) is placed on the sealing gasket (12); S3: Then, the slider seat (5) is inserted into the valve seat (1), and after the edge of the diaphragm (11) is crimped, the locking ring (4) is sleeved onto the slider seat (5), so that the bottom end of the locking ring (4) is inserted into the valve seat (1) and screwed and fixed, and the bottom of the slider seat (5) is pressed and fixed; S4: Then, the slider body (10) is placed in the slider seat (5), and the ball (9) is placed in the slider seat (5). After that, the valve stem (8) is screwed into the slider seat (5), and the sealing ring is sleeved on the valve stem (8), and then slid down to the top of the slider seat (5); S5: Then, the locking sleeve (6) is sleeved on the top of the valve stem (8) and screwed to the slider seat (5) for fixing. Then, the knob (7) is installed on the top of the valve stem (8) to complete the installation of the valve. S6: Finally, the valve is tested for sealing and the valve assembly process is completed.

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