Leak-proof hydraulic oil rotating joint

Abstract

The utility model discloses a leakproof hydraulic oil rotating joint, which relates to the field of hydraulic oil rotating joints, and comprises a rotating joint main body and a lower sealing assembly, the end part of the rotating joint main body is provided with a connecting flange, and the outer surface of the connecting flange is fitted with an upper sealing assembly; and locking assemblies are symmetrically mounted on the outer surface of the upper sealing assembly front and back. According to the leakproof hydraulic oil rotating joint, through the arrangement of the upper sealing assembly and the lower sealing assembly, the upper sealing assembly and the lower sealing assembly can completely wrap the connecting flange after being installed, and due to the fact that the inner surface of the arc-shaped installation plate is connected with the outer surface of the connecting flange in an attached mode, the leakage is prevented; the upper sealing assembly and the lower sealing assembly prevent the connecting position of the connecting flange from loosening, the connecting flange can be completely wrapped to complete sealing, and the situation that the oil leakage phenomenon of the connecting end of the rotary connector and equipment causes waves of hydraulic oil or interference is brought to follow-up cleaning work of workers is avoided.

Description

Technical Field

[0001] The utility model relates to the field of hydraulic oil rotary joints, in particular to a leak-proof hydraulic oil rotary joint. Background Technique

[0002] A rotary joint is a rotating mechanical sealing device, which is used to transport and discharge heat conduction media for fixed pipelines and rotating rollers. The heat conduction media applied to the rotary joint include steam, water, heat-conducting oil, hydraulic oil and coolant. Among them, the hydraulic oil rotary joint is one of the more commonly used rotary joints.

[0003] However, there are still some deficiencies in the current hydraulic oil rotary joints. For example, the leak-proof effect of the existing hydraulic oil rotary joints is poor, resulting in easy oil leakage when the connection end between the rotary joint and the equipment becomes loose. This not only easily causes waste of hydraulic oil but also easily interferes with the cleaning work of the staff, and thus there are certain defects in use.

[0004] Therefore, it is urgent to improve this shortcoming. The utility model researches and improves the existing structural deficiencies, and provides a leak-proof hydraulic oil rotary joint. Content of the Utility Model

[0005] The purpose of the utility model is to provide a leak-proof hydraulic oil rotary joint to solve the problems raised in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A leak-proof hydraulic oil rotary joint, including a rotary joint main body and a lower sealing assembly. A connecting flange is installed at the end of the rotary joint main body, and an upper sealing assembly is fitted on the outer surface of the connecting flange. And locking assemblies are symmetrically installed on the front and rear of the outer surface of the upper sealing assembly. The lower sealing assembly is fitted on the bottom of the connecting flange.

[0007] Further, the upper sealing assembly includes a first arc-shaped connecting plate, an arc-shaped mounting plate, a sealing rubber pad and a first mounting plate. Arc-shaped mounting plates are symmetrically installed on the front and rear of the inner surface of the first arc-shaped connecting plate. And a sealing rubber pad is fixedly installed on the inner surface of the arc-shaped mounting plate. And first mounting plates are symmetrically and fixedly connected to the front and rear sides of the first arc-shaped connecting plate.

[0008] Further, the locking assembly includes an annular bearing plate, a return spring, a pressing plate, a connecting rod, a clamping plate and an arc-shaped sliding block. A return spring is fixedly connected to the top of the annular bearing plate. And a pressing plate is fixedly installed on the top of the return spring. And a connecting rod is fixedly connected to the bottom of the pressing plate. At the same time, a clamping plate is fixedly installed at the bottom of the connecting rod. Arc-shaped sliding blocks are installed at equal intervals in a ring shape at the bottom of the annular bearing plate.

[0009] Further, the bottom of the return spring is fixedly connected to the top of the annular bearing plate, and the top of the return spring is fixedly connected to the bottom of the pressing plate. Moreover, the pressing plate and the annular bearing plate form an elastic structure through the return spring.

[0010] Further, the top of the connecting rod is fixedly connected to the bottom of the pressing plate, and the bottom of the connecting rod is fixedly connected to the top of the clamping plate. Moreover, the clamping plate and the pressing plate form a fixed structure through the connecting rod.

[0011] Further, the top of the arc-shaped slider is fixedly connected to the bottom of the annular bearing plate, and the annular bearing plate and the first mounting plate form a sliding structure through the arc-shaped slider.

[0012] Further, the lower sealing assembly includes a second arc-shaped connecting plate, a second mounting plate, a through hole, and a clamping groove. Second mounting plates are symmetrically installed on the front and rear sides of the second arc-shaped connecting plate. Moreover, a through hole is formed inside the second mounting plate, and a clamping groove is formed at the bottom of the second mounting plate.

[0013] Further, the internal dimensions of the clamping groove are exactly the same as the external dimensions of the clamping plate, and the clamping plate and the second mounting plate form a clamping structure through the clamping groove.

[0014] The utility model provides a leak-proof hydraulic oil rotary joint, which has the following beneficial effects:

[0015] 1. By providing the upper sealing assembly and the lower sealing assembly, after the upper sealing assembly and the lower sealing assembly are installed, they can completely wrap the connecting flange. Since the inner surface of the arc-shaped mounting plate is attached to the outer surface of the connecting flange, the upper sealing assembly and the lower sealing assembly not only prevent loosening at the connection of the connecting flange but also completely wrap the connecting flange to complete sealing, thus avoiding oil leakage at the connection end of the rotary joint, preventing waste of hydraulic oil, and avoiding interference with the subsequent cleaning work of the staff.

[0016] 2. By providing the through hole, when the staff presses down the pressing plate, the clamping plate can penetrate the second mounting plate. Then, through the sliding of the arc-shaped slider, the connecting rod can drive the clamping plate to rotate at an angle. When the clamping plate rotates 90 degrees, with the cooperation of the return spring, when the staff releases the pressing plate, the connecting rod can drive the clamping plate to snap into the clamping groove, thereby completing the locking work between the upper sealing assembly and the lower sealing assembly, making it more convenient for the staff to disassemble and assemble the upper sealing assembly and the lower sealing assembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front three-dimensional structural schematic diagram of a leak-proof hydraulic oil rotary joint of the utility model;

[0018] Figure 2 It is a bottom-up exploded three-dimensional structural schematic diagram of a leak-proof hydraulic oil rotary joint of the present utility model;

[0019] Figure 3 It is a pressing plate-connecting rod three-dimensional structural schematic diagram of a leak-proof hydraulic oil rotary joint of the present utility model.

[0020] In the figure: 1. Rotary joint main body; 2. Connecting flange; 3. Upper sealing assembly; 31. First arc-shaped connecting plate; 32. Arc-shaped mounting plate; 33. Sealing rubber pad; 34. First mounting plate; 4. Locking assembly; 41. Ring-shaped bearing plate; 42. Return spring; 43. Pressing plate; 44. Connecting rod; 45. Clamping plate; 46. Arc-shaped slider; 5. Lower sealing assembly; 51. Second arc-shaped connecting plate; 52. Second mounting plate; 53. Through hole; 54. Clamping groove. Specific embodiments

[0021] The following further describes in detail the embodiments of the present utility model in conjunction with the drawings and examples. The following examples are used to illustrate the present utility model, but cannot be used to limit the scope of the present utility model.

[0022] As Figure 1 and Figure 2 shown, a leak-proof hydraulic oil rotary joint includes a rotary joint main body 1 and a lower sealing assembly 5. A connecting flange 2 is installed at the end of the rotary joint main body 1, and an upper sealing assembly 3 is fitted on the outer surface of the connecting flange 2. The upper sealing assembly 3 includes a first arc-shaped connecting plate 31, an arc-shaped mounting plate 32, a sealing rubber pad 33 and a first mounting plate 34. Arc-shaped mounting plates 32 are symmetrically installed on the inner surface of the first arc-shaped connecting plate 31 in the front and back. And a sealing rubber pad 33 is fixedly installed on the inner surface of the arc-shaped mounting plate 32. Moreover, the front and back sides of the first arc-shaped connecting plate 31 are symmetrically and fixedly connected with first mounting plates 34. And locking assemblies 4 are symmetrically installed on the outer surface of the upper sealing assembly 3 in the front and back. The lower sealing assembly 5 is fitted on the bottom of the connecting flange 2. The lower sealing assembly 5 includes a second arc-shaped connecting plate 51, a second mounting plate 52, a through hole 53 and a clamping groove 54. And the second mounting plates 52 are symmetrically installed on the front and back sides of the second arc-shaped connecting plate 51. And a through hole 53 is opened in the second mounting plate 52. Moreover, a clamping groove 54 is opened at the bottom of the second mounting plate 52. The internal dimensions of the clamping groove 54 are exactly the same as the external dimensions of the clamping plate 45. And the clamping plate 45 and the second mounting plate 52 form a clamping structure through the clamping groove 54. By setting the clamping plate 45 and the second mounting plate 52 to form a clamping structure, the clamping plate 45 is convenient to be clamped into the bottom of the second mounting plate 52 to complete the locking work.

[0023] As Figures 1 - 3As shown, a connecting flange 2 is installed at the end of the rotary joint body 1, and an upper sealing assembly 3 is fitted and installed on the outer surface of the connecting flange 2. Locking assemblies 4 are symmetrically installed on the front and rear outer surfaces of the upper sealing assembly 3. The locking assembly 4 includes an annular bearing plate 41, a return spring 42, a pressing plate 43, a connecting rod 44, a clamping plate 45, and an arc-shaped slider 46. A return spring 42 is fixedly connected to the top of the annular bearing plate 41, and a pressing plate 43 is fixedly installed at the top of the return spring 42. The bottom of the return spring 42 is fixedly connected to the top of the annular bearing plate 41, and the top of the return spring 42 is fixedly connected to the bottom of the pressing plate 43. The pressing plate 43 and the annular bearing plate 41 are configured to form an elastic structure through the return spring 42. By setting the pressing plate 43 and the annular bearing plate 41 as an elastic structure, when the staff releases the pressing plate 43, it can drive the clamping plate 45 to be inserted into the bottom of the second mounting plate 52 through the resilience to complete the locking work. Moreover, the bottom of the pressing plate 43 is fixedly connected to a connecting rod 44, and at the same time, a clamping plate 45 is fixedly installed at the bottom of the connecting rod 44. The top of the connecting rod 44 is fixedly connected to the bottom of the pressing plate 43, and the bottom of the connecting rod 44 is fixedly connected to the top of the clamping plate 45. The clamping plate 45 and the pressing plate 43 are configured to form a fixed structure through the connecting rod 44. By setting the clamping plate 45 and the pressing plate 43 as a fixed structure, the clamping plate 45 will not become loose when the locking work is completed. Arc-shaped sliders 46 are equidistantly installed in a ring shape at the bottom of the annular bearing plate 41. The top of the arc-shaped slider 46 is fixedly connected to the bottom of the annular bearing plate 41. The annular bearing plate 41 and the first mounting plate 34 are configured to form a sliding structure through the arc-shaped sliders 46. By setting the annular bearing plate 41 and the first mounting plate 34 as a sliding structure, the annular bearing plate 41 can easily rotate along the top of the first mounting plate 34 to complete the angle adjustment work of the clamping plate 45. The lower sealing assembly 5 is fitted and installed at the bottom of the connecting flange 2.

[0024] In summary, for this anti-leakage hydraulic oil rotary joint, first, according to Figures 1 to 3In the structure shown, the operator connects the rotary joint body 1 to the equipment connecting pipe through the connecting flange 2. Then, the operator grabs the second arc-shaped connecting plate 51 and initially snaps it onto the bottom of the connecting flange 2. Next, the operator grabs the first arc-shaped connecting plate 31 and snaps it onto the top of the connecting flange 2. At this time, the inner surface of the arc-shaped mounting plate 32 is in fitting connection with the outer surface of the connecting flange 2, and at the same time, the bottom of the first mounting plate 34 is in fitting connection with the top of the second mounting plate 52. Then, the operator presses down on the pressing plate 43, causing the connecting rod 44 to drive the clamping plate 45 to move downward along the inner surface of the through hole 53. When the clamping plate 45 moves out from the bottom of the second mounting plate 52, the operator holds down the pressing plate 43 and makes the annular bearing plate 41 rotate along the top of the first mounting plate 34 by sliding the arc-shaped slider 46, so that the connecting rod 44 drives the clamping plate 45 to rotate. After the clamping plate 45 rotates 90 degrees, the operator releases the pressing plate 43, causing the pressing plate 43 to drive the connecting rod 44 to move upward by the resilience of the return spring 42, so that the clamping plate 45 automatically snaps into the clamping groove 54 to complete the locking work, thereby completing the overall installation work of the upper sealing assembly 3 and the lower sealing assembly 5. At this time, the inner surface of the sealing rubber pad 33 is completely in fitting connection with the rotating part of the rotary joint body 1 and the outer surface of the equipment connecting pipe, so as to achieve the purpose of preventing leakage.

[0025] The embodiments of the present invention are given for purposes of illustration and description, and are not intended to be exhaustive or to limit the present invention to the disclosed form. Many modifications and variations are obvious to those of ordinary skill in the art. The embodiments are chosen and described in order to best explain the principles of the present invention and its practical application, and to enable those of ordinary skill in the art to understand the present invention so as to design various embodiments with various modifications suitable for a particular purpose.

Claims

1. A leak-proof hydraulic oil rotary joint, comprising a rotary joint body (1) and a lower sealing assembly (5), characterized in that: A connecting flange (2) is installed at the end of the rotary joint body (1), and an upper sealing component (3) is installed in a close fit on the outer surface of the connecting flange (2), and a locking component (4) is installed symmetrically on the outer surface of the upper sealing component (3), and the lower sealing component (5) is installed in a close fit on the bottom of the connecting flange (2).

2. The anti-leakage hydraulic oil rotary joint according to claim 1, characterized in that: The upper sealing assembly (3) comprises a first arc-shaped connecting plate (31), an arc-shaped mounting plate (32), a sealing rubber pad (33) and a first mounting plate (34), wherein the arc-shaped mounting plate (32) is symmetrically mounted on the inner surface of the first arc-shaped connecting plate (31) at front and rear ends, and the sealing rubber pad (33) is fixedly mounted on the inner surface of the arc-shaped mounting plate (32), and the first mounting plate (34) is symmetrically fixedly connected to the front and rear sides of the first arc-shaped connecting plate (31).

3. The anti-leakage hydraulic oil rotary joint according to claim 2, characterized in that: The locking assembly (4) comprises an annular bearing plate (41), a reset spring (42), a pressing plate (43), a connecting rod (44), a clamping plate (45) and an arc-shaped slider (46), wherein the top of the annular bearing plate (41) is fixedly connected to the reset spring (42), the top of the reset spring (42) is fixedly mounted with the pressing plate (43), the bottom of the pressing plate (43) is fixedly connected to the connecting rod (44), and the bottom of the connecting rod (44) is fixedly mounted with the clamping plate (45), and the bottom of the annular bearing plate (41) is equidistantly mounted with arc-shaped sliders (46) in an annular shape.

4. The anti-leakage hydraulic oil rotary joint according to claim 3, characterized in that: The bottom of the return spring (42) is fixedly connected to the top of the annular bearing plate (41), and the top of the return spring (42) is fixedly connected to the bottom of the pressing plate (43), and the pressing plate (43) forms an elastic structure with the annular bearing plate (41) through the return spring (42).

5. The anti-leakage hydraulic oil rotary joint according to claim 3, characterized in that: The top of the connecting rod (44) is fixedly connected to the bottom of the pressing plate (43), and the bottom of the connecting rod (44) is fixedly connected to the top of the clamping plate (45), and the clamping plate (45) forms a fixed structure with the pressing plate (43) through the connecting rod (44).

6. The anti-leakage hydraulic oil rotary joint according to claim 3, characterized in that: The top of the arc-shaped sliding block (46) is fixedly connected to the bottom of the annular supporting plate (41), and the annular supporting plate (41) forms a sliding structure with the first mounting plate (34) through the arc-shaped sliding block (46).

7. The anti-leakage hydraulic oil rotary joint according to claim 3, characterized in that: The lower sealing assembly (5) comprises a second arc-shaped connecting plate (51), a second mounting plate (52), a through hole (53) and a clamping groove (54), and the second mounting plates (52) are symmetrically mounted on the front and rear sides of the second arc-shaped connecting plate (51), the through hole (53) is provided inside the second mounting plate (52), and the clamping groove (54) is provided at the bottom of the second mounting plate (52).

8. The anti-leakage hydraulic oil rotary joint according to claim 7, characterized in that: The internal dimensions of the clamping groove (54) are completely consistent with the external dimensions of the clamping plate (45), and the clamping plate (45) forms a clamping structure with the second mounting plate (52) through the clamping groove (54).

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