Multi-stage depressurization regulating valve

Abstract

The invention discloses a multi-stage depressurization regulating valve which comprises a valve body, a valve core, a valve core and a valve core, the valve core is vertically connected into the valve body in a sliding manner; the valve rod is vertically arranged on the valve element and vertically connected to the valve body in a sliding mode. The sliding pipe is vertically arranged on the valve body; the sliding rod is vertically connected to the sliding pipe in a sliding mode and connected with the upper end of the valve rod. The spring is arranged on the outer wall of the valve rod in a sleeving mode and located between the sliding rod and the valve body; and the pressing rod is vertically arranged at the upper end of the sliding rod. The valve has the following advantages and effects that the sliding rod which is in sliding connection is arranged to drive the valve rod and the valve element to slide, the ratchet-shaped structure is used for limiting the sliding rod to only slide downwards, the sliding rod is directly pressed to slide during downward stage adjustment, downward rapid stage adjustment is achieved, the locking mechanism is used for fixing the clamping block during upward stage adjustment, and the locking effect is good. And the sliding rod can freely slide, upward rapid level adjustment is achieved, and the operation convenience is improved.

Description

Technical Field

[0001] The invention relates to the field of valves, and in particular to a multi-stage pressure-reducing regulating valve. Background Art

[0002] The multi-stage pressure-reducing regulating valve is a fluid control device specially designed to handle high pressure differential conditions. It can effectively reduce the high-pressure fluid at the inlet to the required outlet pressure step by step, while reducing or avoiding problems such as noise, vibration and erosion caused by high-speed fluid passing through the valve.

[0003] Chinese patent CN202441987U discloses a three-stage pressure-reducing regulating valve, including a valve body, in which a three-stage pressure-reducing valve seat, a three-stage plunger valve core and an elastic pin are arranged on the three-stage plunger valve core, and the elastic pin connects the valve stem and the three-stage plunger valve core together to form a valve stem assembly.

[0004] When the pressure-reducing regulating valve in the related art is working, it is necessary to rotate the hand wheel to drive the valve stem to move downward to achieve multi-stage adjustment. However, in actual use, it is impossible to quickly determine different gears, making the operation process very inconvenient and requiring improvement. Summary of the invention

[0005] In view of the deficiencies in the prior art, an object of the present invention is to provide a multi-stage pressure-reducing regulating valve which has the effect of convenient level adjustment.

[0006] The above technical objectives of the present invention are achieved through the following technical solutions: a multi-stage pressure-reducing regulating valve, comprising:

[0007] The valve body has a water inlet and a water outlet at both ends;

[0008] A valve core is vertically slidably connected in the valve body;

[0009] A valve stem is vertically arranged on the valve core and vertically slidably connected to the valve body;

[0010] A sliding pipe, vertically arranged on the valve body;

[0011] A sliding rod, vertically slidably connected to the sliding tube and connected to the upper end of the valve stem;

[0012] A spring, sleeved on the outer wall of the valve stem and located between the sliding rod and the valve body;

[0013] A pressure rod, vertically arranged at the upper end of the sliding rod;

[0014] The lower end side wall of the sliding rod is provided with a groove, the bottom wall of the groove is provided with an inclined surface, a card block is rotatably connected in the groove, and a torsion spring is provided at the rotation position, a row of card slots for the card block to be embedded in the inner wall of the sliding tube is obliquely provided, and a locking mechanism for fixing the card block after the card block is embedded in the groove is provided on the sliding rod.

[0015] In a preferred example, the present invention can be further configured as follows: the locking mechanism includes a locking rod, a pressure ring and an elastic member, the locking rod is vertically slidably connected to the sliding rod and extends into the groove, the block is provided with a locking hole for the locking rod to be inserted, the pressure ring is arranged at the upper end of the locking rod, the elastic member is sleeved on the outer wall of the locking rod, and is located between the pressure ring and the upper end surface of the sliding rod.

[0016] In a preferred example, the present invention can be further configured as follows: a support frame is provided on the sliding tube, and a lever driving mechanism for controlling the vertical sliding of the pressure rod is provided on the support frame.

[0017] In a preferred example, the present invention can be further configured as follows: the lever drive mechanism includes a handle and a connecting rod, the handle is arranged in a V shape and is rotatably connected to the support frame, and the connecting rod is arranged in a V shape and is rotatably connected to the bending position of the handle and the upper end of the pressure rod.

[0018] In a preferred example, the present invention can be further configured as follows: the sliding tube is detachably connected to the valve body, a hook is provided on the sliding tube, and a hole for the hook to pass through is provided on the valve body.

[0019] In a preferred example, the present invention can be further configured as follows: the lower end of the sliding rod is provided with a socket for the upper end of the valve stem to be inserted, and a screw penetrating the valve stem is horizontally provided on the sliding tube, and the screw is vertically slidably connected to the sliding tube.

[0020] In a preferred example, the present invention can be further configured as follows: the outer wall of the sliding rod is provided with scale markings.

[0021] In a preferred example, the present invention can be further configured as follows: an observation hole communicating with the card slot is provided through the sliding tube.

[0022] In summary, the present invention has the following beneficial effects:

[0023] 1. The sliding rod with sliding connection is set to drive the valve stem and the valve core to slide, and the thorn-shaped structure is used to limit the sliding rod to slide downward. When adjusting the level downward, the sliding rod is directly pressed to slide, so as to achieve rapid downward adjustment. When adjusting the level upward, the locking mechanism is used to fix the block, so that the sliding rod can slide freely, so as to achieve rapid upward adjustment and improve the convenience of operation.

[0024] 2. The lever driving mechanism is set to drive the sliding rod to move, and the lever principle is used to easily control the sliding of the sliding rod, making the operation process more labor-saving and convenient;

[0025] 3. By providing a detachably connected sliding tube, the sliding tube can be quickly disassembled and assembled, and can be quickly adapted to different valves. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural schematic diagram of an embodiment;

[0027] Figure 2 It is a schematic diagram of the internal structure of the embodiment.

[0028] Figure numerals: 1. valve body; 11. water inlet; 12. water outlet; 13. clamping hole; 2. valve core; 3. valve stem; 4. sliding tube; 41. hook; 42. screw; 43. clamping groove; 44. observation hole; 45. support frame; 5. sliding rod; 51. scale mark; 52. socket; 53. groove; 54. clamping block; 55. torsion spring; 6. spring; 7. pressure rod; 8. locking mechanism; 81. locking rod; 82. pressure ring; 83. elastic member; 84. locking hole; 9. driving mechanism; 91. handle; 92. connecting rod. DETAILED DESCRIPTION

[0029] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0030] like Figure 1 , Figure 2 As shown, a multi-stage pressure-reducing regulating valve comprises a valve body 1, a valve core 2, a valve stem 3, a sliding tube 4, a sliding rod 5, a spring 6 and a pressure rod 7.

[0031] like Figure 1 , Figure 2 As shown, a water inlet 11 and a water outlet 12 are respectively provided at both ends of the valve body 1, a valve core 2 is vertically slidably connected in the valve body 1, and a valve stem 3 is vertically provided on the valve core 2 and vertically slidably connected to the valve body 1. A sliding tube 4 is vertically provided on the valve body 1, and the sliding tube 4 is detachably connected to the valve body 1. A hook 41 is provided on the sliding tube 4, and a clamping hole 13 for the hook 41 to penetrate is provided on the valve body 1, so that the sliding tube 4 can be quickly disassembled and assembled, and can be quickly adapted to different valves.

[0032] like Figure 1 , Figure 2 As shown, the sliding rod 5 is vertically slidably connected to the sliding tube 4, and the outer wall of the sliding rod 5 is provided with a scale mark 51. The lower end of the sliding rod 5 is provided with a socket 52 for the upper end of the valve stem 3 to be inserted, and the sliding tube 4 is horizontally provided with a screw 42 that penetrates the valve stem 3, and the screw 42 is vertically slidably connected to the sliding tube 4.

[0033] like Figure 1 , Figure 2 As shown, the spring 6 is sleeved on the outer wall of the valve stem 3 and is located between the sliding rod 5 and the valve body 1 to control the sliding rod 5 to slide upward. The pressure rod 7 is vertically arranged on the upper end of the sliding rod 5 and is used to control the sliding rod 5 to slide vertically.

[0034] like Figure 1 , Figure 2 As shown, the lower side wall of the sliding rod 5 is provided with a groove 53, the bottom wall of the groove 53 is provided with an inclined surface, a block 54 is rotatably connected in the groove 53, and a torsion spring 55 is provided at the rotation position. A row of grooves 43 for the block 54 to be inserted is obliquely provided on the inner wall of the sliding tube 4, and an observation hole 44 communicating with the grooves 43 is provided through the sliding tube 4.

[0035] like Figure 1 , Figure 2 As shown, a locking mechanism 8 is provided on the sliding rod 5 for fixing the clamping block 54 after the clamping block 54 is embedded in the groove 53 . The locking mechanism 8 includes a locking rod 81 , a pressing ring 82 and an elastic member 83 .

[0036] like Figure 1 , Figure 2 As shown, the locking rod 81 is vertically slidably connected to the sliding rod 5 and extends into the groove 53. The block 54 is provided with a locking hole 84 for the locking rod 81 to be inserted. The pressing ring 82 is provided at the upper end of the locking rod 81, and the elastic member 83 is sleeved on the outer wall of the locking rod 81 and is located between the pressing ring 82 and the upper end surface of the sliding rod 5.

[0037] like Figure 1 , Figure 2 As shown, a support frame 45 is provided on the sliding tube 4, and a lever driving mechanism 9 for controlling the vertical sliding of the pressure rod 7 is provided on the support frame 45. The lever driving mechanism 9 includes a handle 91 and a connecting rod 92, wherein the handle 91 is arranged in a V shape and is rotatably connected to the support frame 45, and the connecting rod 92 is arranged in a V shape and is rotatably connected to the bending position of the handle 91 and the upper end of the pressure rod 7.

[0038] When it is necessary to adjust the level downward, the control handle 91 rotates downward, and the handle 91 drives the connecting rod 92 to move synchronously. Under the principle of lever, the connecting rod 92 presses the pressure rod 7 to slide downward. Then the pressure rod 7 drives the sliding rod 5 and the valve stem 3 to move downward synchronously. At this time, the inner wall of the sliding tube 4 will press the block 54 to automatically flip, and when the block 54 is aligned with the slot 43, the block 54 is embedded in the slot 43, so that the sliding rod 5 and the sliding tube 4 are fixed by the card connection, and under the restriction of the thorn structure, the sliding rod 5 cannot slide upward, so that the downward rapid adjustment is achieved.

[0039] When it is necessary to adjust the level upward, the control handle 91 is rotated downward, and the handle 91 drives the connecting rod 92 to move synchronously. Under the principle of lever, the connecting rod 92 presses the pressure rod 7 to slide downward. Then the pressure rod 7 drives the sliding rod 5 and the valve stem 3 to move downward synchronously, and the inner wall of the sliding tube 4 will press the block 54 to automatically flip.

[0040] When the block 54 is embedded in the slot 43, the pressing ring 82 is pressed downward, and the pressing ring 82 drives the locking rod 81 to move downward and plugs into the locking hole 84 on the block 54 to fix the position of the block 54, so that the sliding rod 5 can slide freely, thereby realizing rapid upward adjustment.

[0041] Therefore, a sliding rod 5 with a sliding connection is provided to drive the valve stem 3 and the valve core 2 to slide, and a thorn-shaped structure is used to limit the sliding rod 5 to slide only downward. When adjusting the level downward, the sliding rod 5 is directly pressed to slide, so as to achieve rapid downward adjustment. When adjusting the level upward, the locking mechanism 8 is used to fix the block 54, so that the sliding rod 5 can slide freely, so as to achieve rapid upward adjustment and improve the convenience of operation.

[0042] The specific embodiments are merely explanations of the present invention and are not limitations of the present invention. After reading this specification, those skilled in the art may make modifications to the embodiments without any creative contribution as needed. However, such modifications are protected by the patent law as long as they are within the scope of the claims of the present invention.

Claims

1. A multi-stage pressure-reducing regulating valve, characterized in that: include: The valve body (1) is provided with a water inlet (11) and a water outlet (12) at both ends; A valve core (2) is vertically slidably connected in the valve body (1); A valve stem (3) is vertically arranged on the valve core (2) and vertically slidably connected to the valve body (1); A sliding tube (4) vertically arranged on the valve body (1); A sliding rod (5) vertically slidably connected to the sliding tube (4) and connected to the upper end of the valve stem (3); A spring (6) is sleeved on the outer wall of the valve stem (3) and is located between the sliding rod (5) and the valve body (1); A pressure rod (7) vertically arranged on the upper end of the sliding rod (5); The lower end side wall of the sliding rod (5) is provided with a groove (53), the bottom wall of the groove (53) is provided with an inclined surface, a clamping block (54) is rotatably connected in the groove (53), and a torsion spring (55) is provided at the rotation position, the inner wall of the sliding tube (4) is obliquely provided with a row of clamping grooves (43) for the clamping block (54) to be embedded, and the sliding rod (5) is provided with a locking mechanism (8) for fixing the clamping block (54) after the clamping block (54) is embedded in the groove (53).

2. A multi-stage pressure-reducing regulating valve according to claim 1, characterized in that: The locking mechanism (8) comprises a locking rod (81), a pressure ring (82) and an elastic member (83); the locking rod (81) is vertically slidably connected to the sliding rod (5) and extends into the groove (53); the block (54) is provided with a locking hole (84) for the locking rod (81) to be inserted; the pressure ring (82) is arranged at the upper end of the locking rod (81); the elastic member (83) is sleeved on the outer wall of the locking rod (81) and is located between the pressure ring (82) and the upper end surface of the sliding rod (5).

3. A multi-stage pressure-reducing regulating valve according to claim 1, characterized in that: A support frame (45) is arranged on the sliding tube (4), and a lever driving mechanism (9) for controlling the vertical sliding movement of the pressure rod (7) is arranged on the support frame (45).

4. A multi-stage pressure-reducing regulating valve according to claim 3, characterized in that: The lever drive mechanism (9) comprises a handle (91) and a connecting rod (92); the handle (91) is arranged in a V shape and is rotatably connected to the support frame (45); the connecting rod (92) is arranged in a V shape and is rotatably connected to the bending position of the handle (91) and the upper end of the pressure rod (7).

5. The multi-stage pressure-reducing regulating valve according to claim 1, characterized in that: The sliding tube (4) is detachably connected to the valve body (1); a hook (41) is provided on the sliding tube (4); and a hole (13) for the hook (41) to pass through is provided on the valve body (1).

6. A multi-stage pressure-reducing regulating valve according to claim 5, characterized in that: The lower end of the sliding rod (5) is provided with a socket (52) for inserting the upper end of the valve stem (3), and the sliding tube (4) is horizontally provided with a screw (42) penetrating the valve stem (3), and the screw (42) is vertically slidably connected to the sliding tube (4).

7. The multi-stage pressure-reducing regulating valve according to claim 1, characterized in that: The outer wall of the sliding rod (5) is provided with a scale mark (51).

8. The multi-stage pressure-reducing regulating valve according to claim 7, characterized in that: The sliding tube (4) is provided with an observation hole (44) which is in communication with the clamping groove (43).

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