Explosion-proof hydraulic pipe joint

Abstract

The utility model discloses an explosion-proof type hydraulic pipe joint which comprises a joint body, a cavity is formed in the joint body, connecting pipes are arranged in the middles of the two ends of the joint body respectively, baffles are fixedly connected to the outer side ends of the two connecting pipes, and a plurality of first springs are fixedly connected to the two ends of the inner wall of the joint body respectively. External threads are arranged at the outer side end of the connecting pipe, a pressure reducing mechanism is fixedly connected to the middle of the upper end of the connector body, a second spring is fixedly connected to the middle of the top end in the pressure reducing mechanism, and a piston is fixedly connected to the lower end of the second spring. When the oil pressure in the connector is too large, the connecting pipe extends out of the two ends of the connector, the first spring buffers the connecting pipe, the space in the connector is increased, the oil pressure in management is reduced, after the oil pressure pushes away the connecting pipe, the oil pressure pushes the piston upwards, part of hydraulic oil enters the pressure reduction mechanism, and the second spring buffers the piston. And the explosion-proof performance of the joint is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to hydraulic system technical field, concretely is a kind of explosion-proof hydraulic pipe joint. BACKGROUND

[0002] Hydraulic pipe joint is the component between connecting high-pressure oil pipe and high-pressure oil pipe in hydraulic system.

[0003] When the pressure of hydraulic oil pipe in hydraulic system is too large and suddenly bursts, the hydraulic oil in its interior can be rapidly ejected, and huge impact force is generated, which can cause damage to surrounding objects or workers, and has great safety hazard. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a kind of explosion-proof hydraulic pipe joint, can reduce the oil pressure in pipeline by joint when the oil pressure in the pipeline of hydraulic system is too large, improve the explosion-proof performance of joint.

[0005] To achieve the above-mentioned purpose, a kind of explosion-proof hydraulic pipe joint is provided, including joint main body, the chamber is equipped in the inside of joint main body, and the middle part of the two ends of joint main body is equipped with the opening communicated with chamber, the middle part of the two ends of joint main body is equipped with connecting pipe respectively, and connecting pipe extends into joint main body by opening, the outer side end of connecting pipe is slidably connected with the side wall of the opening of joint main body, and the opposite ends of two connecting pipes abut each other, the outer side end of two connecting pipes is fixedly connected with baffle, and the baffles on two connecting pipes are opposite, the inner wall of joint main body is fixedly connected with a plurality of first springs at two ends respectively, and the other end of first spring is fixedly connected with baffle, the outer side end of connecting pipe is equipped with external thread, and external thread is located on the outside of joint main body, the middle part of the upper end of joint main body is fixedly connected with pressure reducing mechanism, and pressure reducing mechanism is communicated with the chamber of joint main body, the middle part of the top end in the inside of pressure reducing mechanism is fixedly connected with second spring, the lower end of second spring is fixedly connected with piston, and the outer side end of piston is slidably connected with the inner wall of pressure reducing mechanism, the middle part of the upper end of piston is fixedly connected with guide rod, and guide rod passes through the middle part of second spring, the upper end of guide rod penetrates pressure reducing mechanism upwards and is slidably connected with pressure reducing mechanism. When the oil pressure in the pipeline of hydraulic system is too large, the oil pressure in pipeline can be reduced by joint, and the explosion-proof performance of joint is improved.

[0006] According to the explosion-proof hydraulic pipe joint, the outer side end of the baffle is provided with a first sealing ring, and the outer side end of the first sealing ring is slidably connected with the side wall of the chamber of the joint main body. The first sealing ring increases the sealing between the baffle and the joint main body, prevents hydraulic oil from leaking into the space where the first springs are located in the joint, and makes the hydraulic oil unrecoverable.

[0007] According to the explosion-proof hydraulic pipe joint, the upper end of the guide rod is fixedly connected with a limiting plate, and the guide rod is located in the middle of the limiting plate.

[0008] According to the explosion-proof hydraulic pipe joint, the pressure reducing mechanism is composed of a bolt, a mounting cover, a flange and a pressure reducing pipe, the pressure reducing pipe is fixedly connected to the middle of the upper end of the joint body and communicates with the cavity of the joint body, the flange is fixedly connected to the outer end of the pressure reducing pipe, the upper end of the flange is in the same plane with the upper end of the pressure reducing pipe, the mounting cover is arranged at the upper ends of the flange and the pressure reducing pipe, the bolt is arranged at the upper end of the mounting cover and sequentially penetrates the mounting cover and the flange in a downward direction, the pressure reducing pipe is fixedly connected with the mounting cover through the flange, the guide rod penetrates the middle of the mounting cover, and the second spring is fixedly connected to the middle of the lower end of the mounting cover, and the piston is in sliding connection with the inner wall of the pressure reducing pipe. The pressure reducing pipe further increases the hydraulic oil capacity that can be accommodated by the joint, and the second spring pushes the piston to reset after the pipeline is normal, so that the hydraulic oil in the pressure reducing pipe is discharged.

[0009] According to the explosion-proof hydraulic pipe joint, the outer end of the second sealing ring is in sliding connection with the inner wall of the pressure reducing pipe. The second sealing ring increases the sealing property between the piston and the pressure reducing pipe, so that the hydraulic oil is prevented from leaking.

[0010] According to the explosion-proof hydraulic pipe joint, a sealing gasket is arranged between the mounting cover and the flange, the sealing gasket has the same shape as the flange, and the bolt penetrates the sealing gasket. The sealing gasket reduces the gap between the mounting cover and the pressure reducing pipe, and improves the sealing property of the joint.

[0011] According to the explosion-proof hydraulic pipe joint, the sealing ring is fixedly connected to the inner wall of the opening of the joint body, and the connecting pipe penetrates the middle of the sealing ring and is in sliding connection with the sealing ring. The sealing ring increases the sealing property of the contact part between the joint body and the connecting pipe, and further prevents the hydraulic oil from leaking.

[0012] Compared with the prior art, the explosion-proof hydraulic pipe joint has the following beneficial effects:

[0013] 1. When the oil pressure in the joint is too large, the connecting pipe extends to both ends of the joint, the first spring buffers the connecting pipe, increases the space in the joint, reduces the oil pressure in the joint, and has the explosion-proof effect.

[0014] 2. After the oil pressure pushes away the connecting pipe, the oil pressure pushes the piston upward, part of the hydraulic oil enters the pressure reducing mechanism, the volume of the hydraulic oil that can be stored in the joint is increased, the second spring buffers the piston, and the explosion-proof performance of the joint is further improved.

[0015] The additional aspects and advantages of the present application will be given in part in the following description, become apparent from the following description, or be understood through practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0016] The present application will be further described below in conjunction with the drawings and embodiments;

[0017] Figure 1 is a perspective view of the explosion-proof hydraulic pipe joint of the present application;

[0018] Figure 2 is a sectional view of the explosion-proof hydraulic pipe joint of the present application;

[0019] Figure 3 is a perspective view of the pressure reducing mechanism of the explosion-proof hydraulic pipe joint of the present application;

[0020] Figure 4 is Figure 2 is an enlarged view of A in the middle.

[0021] In the figure: 1, joint body; 2, connecting pipe; 3, external thread; 4, pressure reducing mechanism; 5, limiting plate; 6, baffle; 7, first spring; 8, first sealing ring; 9, piston; 10, second spring; 11, guide rod; 12, bolt; 13, mounting cover; 14, flange; 15, pressure reducing pipe; 16, second sealing ring. DETAILED DESCRIPTION

[0022] The technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative labor fall within the scope of protection of the present application.

[0023] Please refer to Figures 1-4The utility model provides a technical scheme: an explosion -proof hydraulic pipe joint, including the joint main part 1, the chamber is equipped with in the joint main part 1, and the both ends of joint main part 1 are equipped with the opening of intercommunication with the chamber in the middle part, the both ends of joint main part 1 are equipped with the connecting pipe 2 respectively in the middle part, and the connecting pipe 2 extends to the joint main part 1 through the opening, and the outside end of connecting pipe 2 is connected with the opening side wall of joint main part 1 slidingly, and the opposite end of two connecting pipes 2 is mutually resisted, and the opening inner wall of joint main part 1 is fixedly connected with the sealing washer, and the connecting pipe 2 is through the middle part of sealing washer and is connected with sealing washer slidingly, and sealing washer increases the sealing property of the contact part of joint main part 1 and connecting pipe 2, further prevents hydraulic oil leakage. The outside end of two connecting pipes 2 is fixedly connected with the baffle 6, and the baffle 6 on two connecting pipes 2 is opposite, and the outside end of baffle 6 is installed with the first sealing ring 8, and the outside end of first sealing ring 8 is connected with the chamber side wall of joint main part 1 slidingly, and the sealing property between baffle 6 and joint main part 1 is increased through the first sealing ring 8, avoids the leakage of hydraulic oil to the space where the first spring 7 is located in the joint, so that the hydraulic oil cannot be recovered. The inner wall both ends of joint main part 1 are fixedly connected with a plurality of first springs 7 respectively, and the other end of first spring 7 is fixedly connected with baffle 6, and the outside end of connecting pipe 2 is equipped with the external thread 3, and the external thread 3 is located at the outside of joint main part 1, and the upper end middle part of joint main part 1 is fixedly connected with the pressure reducing mechanism 4, and the pressure reducing mechanism 4 is communicated with the chamber of joint main part 1, and the pressure reducing mechanism 4 is composed of bolt 12, installation cover 13, flange 14 and pressure reducing pipe 15, and the pressure reducing pipe 15 is fixedly connected in the upper end middle part of joint main part 1 and is communicated with the chamber of joint main part 1, and the flange 14 is fixedly connected in the outside end of pressure reducing pipe 15, and the upper end of flange 14 is in the same plane with the upper end of pressure reducing pipe 15, and the installation cover 13 is arranged in the upper end of flange 14 and pressure reducing pipe 15, and the bolt 12 is equipped with a plurality of and is arranged in the upper end of installation cover 13, and the bolt 12 sequentially penetrates installation cover 13 and flange 14 downwards, and the pressure reducing pipe 15 is fixedly connected with installation cover 13 through flange 14, and the guide rod 11 penetrates the middle part of installation cover 13, and the second spring 10 is fixedly connected in the lower end middle part of installation cover 13, and the piston 9 is slidingly connected with the inner wall of pressure reducing pipe 15, and the pressure reducing pipe 15 further increases the hydraulic oil capacity that the joint can contain, and the second spring 10 pushes piston 9 reset after pipeline normal, and the hydraulic oil in pressure reducing pipe 15 is discharged. The sealing pad is arranged between installation cover 13 and flange 14, and the sealing pad is same with flange 14 in shape, and the bolt 12 penetrates sealing pad, and the sealing pad reduces the gap between installation cover 13 and pressure reducing pipe 15, and improves the sealing property of joint. The top middle part in the inside of pressure reducing mechanism 4 is fixedly connected with the second spring 10, and the lower end of second spring 10 is fixedly connected with piston 9, and the outside end of piston 9 is slidingly connected with the inner wall of pressure reducing mechanism 4, and the outside end of piston 9 is installed with the second sealing ring 16, and the outside end of second sealing ring 16 is slidingly connected with the inner wall of pressure reducing pipe 15, and the second sealing ring 16 increases the sealing property between piston 9 and pressure reducing pipe 15, and avoids the leakage of hydraulic oil.The upper middle part of the piston 9 is fixedly connected with a guide rod 11, the guide rod 11 passes through the middle part of the second spring 10, the upper end of the guide rod 11 is fixedly connected with a limiting plate 5, and the guide rod 11 is located in the middle part of the limiting plate 5, the limiting plate 5 is used for limiting the piston 9, and the bottom of the piston 9 is prevented from rubbing against the baffle 6. The upper end of the guide rod 11 penetrates the pressure relief mechanism 4 upwards and is in sliding connection with the pressure relief mechanism 4.

[0024] Working principle: when the oil pressure in the pipeline of the hydraulic system is too large, the oil pressure pushes the two connecting pipes 2 away from each other, increases the hydraulic oil capacity in the joint, and pushes the piston 9 upwards after pushing the two connecting pipes 2 away, so that the hydraulic oil enters the pressure relief pipe 15, further increases the hydraulic oil capacity in the joint, reduces the oil pressure in the pipeline, and after the oil pressure in the pipeline is normal, the first spring 7 pushes the connecting pipe 2 to reset, the second spring 10 pushes the piston 9 to reset, and the excess hydraulic oil in the joint is discharged.

[0025] The above describes the embodiments of the utility model in detail in combination with the drawings, but the utility model is not limited to the above-mentioned embodiments, and various changes can be made within the knowledge range possessed by the ordinary skilled in the art without departing from the purpose of the utility model.

Claims

1. An explosion-proof hydraulic pipe joint comprising a joint body (1), characterized in that, The joint body (1) is internally provided with a chamber, and the middle of the two ends of the joint body (1) is provided with an opening communicated with the chamber, the middle of the two ends of the joint body (1) is respectively provided with a connecting pipe (2), and the connecting pipe (2) extends into the joint body (1) through the opening, the outer side end of the connecting pipe (2) is slidably connected with the side wall of the opening of the joint body (1), and the opposite ends of the two connecting pipes (2) abut against each other, the outer side end of each of the two connecting pipes (2) is fixedly connected with a baffle (6), and the baffles (6) on the two connecting pipes (2) are opposite to each other, the inner wall of the joint body (1) is fixedly connected with a plurality of first springs (7) at the two ends, respectively, and the other end of the first spring (7) is fixedly connected with the baffle (6), the outer side end of the connecting pipe (2) is provided with an external thread (3), and the external thread (3) is located on the outer side of the joint body (1), the middle of the upper end of the joint body (1) is fixedly connected with a pressure reducing mechanism (4), and the pressure reducing mechanism (4) is communicated with the chamber of the joint body (1), the middle of the top of the pressure reducing mechanism (4) is fixedly connected with a second spring (10) internally, the lower end of the second spring (10) is fixedly connected with a piston (9), and the outer side end of the piston (9) is slidably connected with the inner wall of the pressure reducing mechanism (4), the middle of the upper end of the piston (9) is fixedly connected with a guide rod (11), and the guide rod (11) passes through the middle of the second spring (10), and the upper end of the guide rod (11) upwardly penetrates the pressure reducing mechanism (4) and is slidably connected with the pressure reducing mechanism (4).

2. An explosion-proof hydraulic pipe joint as claimed in claim 1, characterized in that: The outer side end of the baffle (6) is provided with a first sealing ring (8), and the outer side end of the first sealing ring (8) is slidably connected with the side wall of the chamber of the joint body (1).

3. An explosion-proof hydraulic pipe joint as defined in claim 1, characterized in that: The upper end of the guide rod (11) is fixedly connected with a limiting plate (5), and the guide rod (11) is located in the middle of the limiting plate (5).

4. An explosion-proof hydraulic pipe joint as defined in claim 1, wherein: The pressure reducing mechanism (4) is composed of a bolt (12), a mounting cover (13), a flange (14) and a pressure reducing pipe (15), the pressure reducing pipe (15) is fixedly connected to the middle of the upper end of the joint body (1) and is communicated with the chamber of the joint body (1), the flange (14) is fixedly connected to the outer side end of the pressure reducing pipe (15), and the upper end of the flange (14) is in the same plane as the upper end of the pressure reducing pipe (15), the mounting cover (13) is arranged on the upper end of the flange (14) and the pressure reducing pipe (15), the bolt (12) is provided with a plurality of bolts and is arranged on the upper end of the mounting cover (13), and the bolt (12) downwardly penetrates the mounting cover (13) and the flange (14) in sequence, the pressure reducing pipe (15) is fixedly connected with the mounting cover (13) through the flange (14), the guide rod (11) penetrates the middle of the mounting cover (13), and the second spring (10) is fixedly connected to the middle of the lower end of the mounting cover (13), and the piston (9) is slidably connected with the inner wall of the pressure reducing pipe (15).

5. An explosion-proof hydraulic pipe joint as claimed in claim 4, characterized in that: The outer side end of the piston (9) is provided with a second sealing ring (16), and the outer side end of the second sealing ring (16) is slidably connected with the inner wall of the pressure reducing pipe (15).

6. An explosion-proof hydraulic pipe joint as defined in claim 4, wherein: A sealing gasket is provided between the mounting cover (13) and the flange (14), and the sealing gasket has the same shape as the flange (14), and the bolt (12) passes through the sealing gasket.

7. An explosion-proof hydraulic pipe joint as defined in claim 1, wherein: A sealing ring is fixedly connected to the inner wall of the opening of the joint body (1), and the connecting pipe (2) passes through the middle of the sealing ring and is slidably connected to the sealing ring.

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