Explosion-proof hydraulic pressure reducing valve structure

Abstract

The utility model discloses an explosion-proof type hydraulic pressure reducing valve structure, which relates to the technical field of pressure reducing valves, and comprises a valve body, a plug-in solenoid structure arranged at one end of the valve body, a high-pressure cavity arranged in the plug-in solenoid structure, a ball seat arranged at one end of the high-pressure cavity, and a screw rod braking structure arranged at the other end of the valve body and extending into a low-pressure cavity, a plunger rod is arranged in a lead screw of the lead screw braking structure, the other end of the plunger rod is sleeved with a plunger cylinder, and a ball core opposite to the ball seat is arranged at one end of the plunger cylinder. Based on thread adjustment of a plug-in solenoid structure in the connecting pipe assembly and thread adjustment of a lead screw braking structure in the pressure adjusting assembly, the design has the bidirectional adjusting characteristic, pressure adjustment can be conducted on the pressure of the connector end of the ball seat and the ball core through telescopic adjustment of the pressure adjusting assembly, and the pressure of the connector end of the ball seat and the ball core can be adjusted through telescopic adjustment of the connecting pipe assembly. And the pressure at the interface end of the ball seat and the ball core is adjusted.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic valve field especially relates to an explosion -proof hydraulic pressure reducing valve structure. BACKGROUND

[0002] Hydraulic pressure reducing valve plays an important role in the industrial field, is widely used in each field, such as engineering machinery, metallurgical equipment, automobile manufacturing, rail train etc., and hydraulic pressure reducing valve is mainly composed of valve body, valve core, spring, adjusting screw etc., and the opening degree of valve port is adjusted by the action force of spring and system pressure, to realize the regulation of system pressure, as shown in a kind of pressure reducing valve (publicity announcement number CN221401158U) disclosed by Chinese patent network, the valve core of this kind of form hydraulic pressure reducing valve is under the action force of rectangular spring and second spring seat, steel ball is opened downward, so that oil inlet and oil outlet hole are communicated, then hydraulic oil enters from oil inlet channel, after reaching certain pressure, the hydraulic pressure that valve core is subjected to is greater than the action force that rectangular spring and second spring seat are subjected to, oil pushes valve core to move upward, compresses rectangular spring, and the pressure of steel ball by valve core reduces until valve core is separated from steel ball and cuts off high-pressure oil, so as to obtain low-pressure oil.

[0003] However, the hydraulic pressure reducing valve adopted by the above-mentioned disclosed patent and existing market still has some deficiencies: most of the existing form hydraulic pressure reducing valve only has single adjustment function, and its pressure reducing and adjusting performance is relatively single, and the on-site flexible assembly adaptability is relatively limited. Therefore, the technical personnel in the field provide an explosion-proof hydraulic pressure reducing valve structure to solve the problems raised in the above background art. UTILITY MODEL CONTENTS

[0004] In view of the deficiencies of the prior art, the utility model provides an explosion-proof hydraulic pressure reducing valve structure, which solves the problem of the single pressure reducing and adjusting performance of the existing hydraulic pressure reducing valve raised in the above background art.

[0005] To achieve the above object, the utility model is realized by the following technical scheme: an explosion-proof hydraulic pressure reducing valve structure, comprising: a valve body, a low-pressure cavity is formed in the valve body; a plug-in spiral pipe structure is arranged at one end of the valve body, a high-pressure cavity is formed in the plug-in spiral pipe structure, a ball seat is arranged at one end of the high-pressure cavity; a lead screw brake structure is arranged at the other end of the valve body and extends into the low-pressure cavity, a plunger rod is arranged in the lead screw of the lead screw brake structure, a plunger cylinder is arranged at the other end of the plunger rod, a ball core is arranged at one end of the plunger cylinder opposite to the ball seat, and a return spring is arranged on the plunger cylinder to provide pressure to the ball core and press the ball core towards the ball seat.

[0006] As a further technical scheme of the utility model: the screw rod brake structure includes brake silk cover that is rotationally connected on the valve body, the outside of brake silk cover is equipped with knob, and the inside of knob is screwed and is connected with brake screw rod.

[0007] As a further technical scheme of the utility model: the reset spring, plunger rod, plunger cylinder constitute air pressure rod structure.

[0008] As a further technical scheme of the utility model: the bottom of plunger rod is provided with air pressure extension cavity in the form of concave.

[0009] As a further technical scheme of the utility model: the plug-in screw pipe structure includes first screw rod and second screw rod, and knob nut is equipped between first screw rod and second screw rod.

[0010] As a further technical scheme of the utility model: one end of plug-in screw pipe structure is equipped with sealing end extending to the inside of valve body.

[0011] As a further technical scheme of the utility model: the inside of valve body is equipped with sealing sleeve opposite to the guide of sealing end, and the inner wall of sealing sleeve is equipped with not less than a group of sealing washer.

[0012] As a further technical scheme of the utility model: one end of screw rod brake structure is equipped with sealing ring adhering with the inner wall of valve body.

[0013] As a further technical scheme of the utility model: one side of valve body of valve body is equipped with low-pressure interface communicating with low-pressure cavity.

[0014] As a further technical scheme of the utility model: the other side of valve body of valve body is equipped with valve seat.

[0015] The utility model provides a kind of explosion-proof hydraulic pressure pressure reducing valve structure, compared with prior art has following beneficial effects:

[0016] The hydraulic pressure pressure reducing valve of the design, based on the screw thread adjustment of plug-in screw pipe structure in pipe connector assembly, and the screw thread adjustment of screw rod brake structure in pressure regulating component, has bidirectional adjustment characteristics, can be adjusted by the extension adjustment of pressure regulating component, the interface end pressure of ball seat and ball core is adjusted, can be adjusted by the extension adjustment of pipe connector assembly, the interface end pressure of ball seat and ball core is adjusted, and by the extension adjustment of pipe connector assembly, it can be more flexible to adjust its installation height, to adapt to the complex and changeable installation environment on site. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 It is a kind of structure schematic view of explosion-proof hydraulic pressure pressure reducing valve structure;

[0018] Figure 2It is an explosion view of an explosion-proof hydraulic pressure reducing valve structure;

[0019] Figure 3 It is a plane schematic view of an explosion-proof hydraulic pressure reducing valve structure;

[0020] Figure 4 It is a structural schematic view of a connector assembly in an explosion-proof hydraulic pressure reducing valve structure;

[0021] Figure 5 It is a structural schematic view of a pressure regulating assembly in an explosion-proof hydraulic pressure reducing valve structure.

[0022] In the figure: 1, valve body; 2, valve seat; 3, low pressure interface; 4, connector assembly; 41, plug-in screw pipe structure; 411, first screw rod; 412, knob nut; 413, second screw rod; 42, high pressure cavity; 43, ball seat; 44, sealing end; 45, sealing sleeve; 46, sealing ring; 5, pressure regulating assembly; 51, screw rod brake structure; 511, knob; 512, brake screw sleeve; 513, brake screw rod; 52, return spring; 53, plunger rod; 54, plunger cylinder; 55, ball core; 56, sealing sleeve ring; 6, low pressure cavity. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model. EMBODIMENT

[0024] Please refer to Figures 1-4 The utility model provides an explosion-proof hydraulic pressure reducing valve structure technical scheme: an explosion-proof hydraulic pressure reducing valve structure, including valve body 1, low pressure cavity 6 is set up in valve body 1 inside, the valve body 1 valve body one side is equipped with with low pressure cavity 6's low pressure interface 3, be equipped with in the plug-in screw pipe structure 41 of valve body 1 one end, the inside of plug-in screw pipe structure 41 is set up high pressure cavity 42, high pressure cavity 42 one end is equipped with ball seat 43, utilize the telescopic adjustment characteristic of plug-in screw pipe structure 41, push ball seat 43 is close to or away from ball core 55, carries out pressure regulation to the interface end pressure between both, and through the telescopic adjustment of plug-in screw pipe structure 41, can regulate the overall installation length, to make low pressure interface 3 more flexible and on-site equipment is connected, and the interface pressure variable of ball seat 43 and ball core 55 caused by the telescopic adjustment of plug-in screw pipe structure 41 can be compensated by telescopic brake of pressure regulating assembly 5, specifically:

[0025] Plug screw structure 41 includes a first screw 411 and a second screw 413, and a knob nut 412 is arranged between the first screw 411 and the second screw 413. The first screw 411 in the plug screw structure 41 is screwed to the valve body 1, and by screwing the first screw 411 along the valve body 1, the length of the pressure relief valve is adjusted, and the pressure of the ball seat 43 and the ball core 55 is adjusted. The second screw 413 is connected to the high-pressure equipment as a high-pressure interface.

[0026] As a further scheme of the embodiment, one end of the plug screw structure 41 is provided with a sealing end 44 extending into the valve body 1, and the inside of the valve body 1 is provided with a sealing sleeve 45 opposite to the sealing end 44. The inner wall of the sealing sleeve 45 is provided with not less than one set of sealing gaskets 46. When the plug screw structure 41 is screwed to adjust the extension and retraction of the valve body 1, the sealing end 44 is synchronously extended and retracted, and the sealing sleeve 45 and the sealing gaskets 46 are combined to seal the sealing end 44, which plays a real-time sealing role.

[0027] It should be noted that the combination of the plug screw structure 41, the high-pressure cavity 42, the ball seat 43, the sealing end 44, the sealing sleeve 45, and the sealing gasket 46 constitutes a pipe connection assembly 4. The extension and retraction adjustment characteristics of the pipe connection assembly 4 play a pressure relief adjustment role, and also have more flexible on-site adjustment performance. Embodiment

[0028] Please refer to Figures 1-3 , Figure 5 The embodiment further illustrates that the other end of the valve body 1 is provided with a lead screw brake structure 51 extending into the low-pressure cavity 6. The inside of the lead screw brake structure 51 is provided with a plunger rod 53, the other end of the plunger rod 53 is provided with a plunger cylinder 54, one end of the plunger cylinder 54 is provided with a ball core 55 opposite to the ball seat 43, and the plunger cylinder 54 is provided with a return spring 52 for providing pressure to the ball core 55 and pressing the ball core 55 to the ball seat 43. The extension and retraction adjustment characteristics of the lead screw brake structure 51 are used to adjust the pressure of the ball core 55 and the ball seat 43, so that the hydraulic medium in the high-pressure cavity 42 overcomes the pressure of the ball core 55 and flows into the low-pressure cavity 6, which plays a suitable hydraulic pressure relief role. Specifically:

[0029] The screw brake structure 51 comprises a brake sleeve 512 rotatably connected to the valve body 1, and the brake sleeve 512 is provided with a knob 511 on the outer side, and the inner side of the knob 511 is screwed with a brake screw 513. By rotating the knob 511, the brake sleeve 512 is rotated, the knob pushing force is converted into lifting force and transmitted to the brake screw 513, the brake screw 513 is pushed to move up and down, and then the ball core 55 is extended and retracted, the interface pressure between the ball core 55 and the ball seat 43 is adjusted, so that the ball core 55 maintains appropriate pressure on the ball seat 43, and the pressure of the hydraulic medium discharged from the high-pressure cavity 42 is reduced.

[0030] As a further scheme of the embodiment, one end of the screw brake structure 51 is provided with a sealing sleeve 56 abutting against the inner wall of the valve body 1. By providing the sealing sleeve 56 on the screw of the screw brake structure 51, the screw brake structure 51 itself has a sealing function, and the sealing sleeve 56 has a secondary sealing function, thereby resealing between the screw brake structure 51 and the valve body 1.

[0031] Further, the reset spring 52, the plunger rod 53, and the plunger cylinder 54 constitute a pneumatic rod structure. Compared with a single spring structure, the pneumatic rod structure has more stable elastic extension and retraction characteristics, and better elastic support function for the adjustment of the ball core 55, so that the ball core 55 is more stable in extension and retraction and reset when impacted by high-pressure medium.

[0032] It should be noted that the combination of the screw brake structure 51, the reset spring 52, the plunger rod 53, the plunger cylinder 54, the ball core 55, and the sealing sleeve 56 constitutes the pressure regulating assembly 5. The integrated pressure regulating assembly 5 has more compact and modular overall structure, more convenient adjustment, smaller space occupation, and better adaptation to on-site installation and use requirements.

[0033] In addition to the above, the bidirectional pressure regulating characteristics of the connector assembly 4 and the pressure regulating assembly 5 have more flexible and variable pressure regulating characteristics, which can better meet the on-site installation requirements, have better pressure relief and explosion-proof stability, and when performing hydraulic pressure relief, the high-pressure hydraulic medium is delivered to the pressure relief valve through the high-pressure cavity 42. When the high-pressure medium flows through the high-pressure cavity 42, the interface pressure between the ball seat 43 and the ball core 55 needs to be overcome to flow into the low-pressure cavity 6 to reduce the pressure of the high-pressure medium, and then the reduced hydraulic medium flows out through the low-pressure interface 3 to realize the hydraulic pressure relief regulation.

[0034] The above only is the preferred embodiment of the utility model, it should be pointed out, for ordinary skilled person in the art, without departing from the principle of the utility model, can make a number of improvements and refinements, these improvements and refinements also should be considered the protection scope of the utility model.The structure, device and operating method not specifically described and explained in the utility model, if no special description and limitation, all according to the conventional means of the art implementation.

Claims

1. An explosion-proof hydraulic pressure reducing valve structure characterized by comprising: The utility model relates to a valve body (1) is internally provided with low pressure cavity (6), the plug screw pipe structure (41) is arranged in one end of valve body (1), the plug screw pipe structure (41) is internally provided with high pressure cavity (42), one end of high pressure cavity (42) is provided with ball seat (43), the screw rod brake structure (51) is arranged in the other end of valve body (1) and extends to low pressure cavity (6) inside, the screw rod brake structure (51) is internally provided with plunger rod (53) of screw rod, the other end of plunger rod (53) is provided with plunger cylinder (54), one end of plunger cylinder (54) is provided with ball core (55) opposite ball seat (43), and plunger cylinder (54) is provided with reset spring (52) for providing pressure to ball core (55) and making ball core (55) press to ball seat (43) on. The utility model relates to a valve body (1) is internally provided with low pressure cavity (6), the plug screw pipe structure (41) is arranged in one end of valve body (1), the plug screw pipe structure (41) is internally provided with high pressure cavity (42), one end of high pressure cavity (42) is provided with ball seat (43), the screw rod brake structure (51) is arranged in the other end of valve body (1) and extends to low pressure cavity (6) inside, the screw rod brake structure (51) is internally provided with plunger rod (53) of screw rod, the other end of plunger rod (53) is provided with plunger cylinder (54), one end of plunger cylinder (54) is provided with ball core (55) opposite ball seat (43), and plunger cylinder (54) is provided with reset spring (52) for providing pressure to ball core (55) and making ball core (55) press to ball seat (43) on. The utility model relates to a valve body (1) is internally provided with low pressure cavity (6), the plug screw pipe structure (41) is arranged in one end of valve body (1), the plug screw pipe structure (41) is internally provided with high pressure cavity (42), one end of high pressure cavity (42) is provided with ball seat (43), the screw rod brake structure (51) is arranged in the other end of valve body (1) and extends to low pressure cavity (6) inside, the screw rod brake structure (51) is internally provided with plunger rod (53) of screw rod, the other end of plunger rod (53) is provided with plunger cylinder (54), one end of plunger cylinder (54) is provided with ball core (55) opposite ball seat (43), and plunger cylinder (54) is provided with reset spring (52) for providing pressure to ball core (55) and making ball core (55) press to ball seat (43) on. The utility model relates to a valve body (1) is internally provided with low pressure cavity (6), the plug screw pipe structure (41) is arranged in one end of valve body (1), the plug screw pipe structure (41) is internally provided with high pressure cavity (42), one end of high pressure cavity (42) is provided with ball seat (43), the screw rod brake structure (51) is arranged in the other end of valve body (1) and extends to low pressure cavity (6) inside, the screw rod brake structure (51) is internally provided with plunger rod (53) of screw rod, the other end of plunger rod (53) is provided with plunger cylinder (54), one end of plunger cylinder (54) is provided with ball core (55) opposite ball seat (43), and plunger cylinder (54) is provided with reset spring (52) for providing pressure to ball core (55) and making ball core (55) press to ball seat (43) on.

2. The explosion-proof hydraulic pressure reducing valve structure according to claim 1, wherein ​ 3. The explosion-proof hydraulic pressure reducing valve structure according to claim 1, wherein ​ 4. The explosion-proof hydraulic pressure reducing valve structure according to claim 3, wherein ​ 5. The explosion-proof hydraulic pressure reducing valve structure according to claim 1, wherein ​ 6. The explosion-proof hydraulic pressure reducing valve structure according to claim 1, wherein ​ 7. The explosion-proof hydraulic pressure reducing valve structure according to claim 6, wherein ​ 8. The explosion-proof hydraulic pressure reducing valve structure according to claim 1, wherein ​ 9. The explosion-proof hydraulic pressure reducing valve structure according to claim 1, wherein ​ 10. The explosion-proof hydraulic pressure reducing valve structure according to claim 1, wherein ​

Images