Wear-resistant guide sleeve assembly

Abstract

The utility model belongs to the technical field of guide sleeves, in particular to a wear-resistant guide sleeve component, which is characterized in that a positioning piece for mutual fixation is arranged between an outer sleeve and a neck bush; a pressure-regulating liquid storage mechanism is arranged on the lower portion of the outer sleeve, a flow guide hole communicated with the pressure-regulating liquid storage mechanism is formed between the outer sleeve and the neck bush, and the pressure-regulating liquid storage mechanism is communicated with a flow guide ring arranged on the inner surface of the neck bush through the flow guide hole. The outer sleeve and the neck bush are positioned through the positioning piece, so that the wear resistance of the inner surface of the outer sleeve is improved through the neck bush, and lubricating liquid stored in the pressure regulating liquid storage mechanism is conveniently guided into the flow guide ring through the flow guide hole; and therefore, the lubricating liquid in the flow guide grooves can conveniently lubricate the inner surface of the lining sleeve.

Description

Technical Field

[0001] The utility model belongs to the technical field of guide sleeves, and particularly relates to a wear-resistant guide sleeve assembly. Background Art

[0002] A hydraulic valve is an automatic component operated by pressure oil. It is controlled by the pressure oil of a pilot valve and is usually used in combination with an electromagnetic pilot valve. It can be used to remotely control the on-off of the oil, gas, and water pipeline systems of a hydropower station. It is a component used in hydraulic transmission to control the pressure, flow rate, and direction of a liquid. Among them, the valve that controls pressure is called a pressure control valve, the valve that controls flow rate is called a flow control valve, and the valve that controls on-off and flow direction is called a direction control valve. A hydraulic valve guide sleeve assembly is a component used to guide a guide rod.

[0003] However, since the guide rod of the hydraulic valve slides in the guide sleeve assembly for a long time, it is easy to cause wear of the hydraulic valve guide sleeve assembly. After wear, the hydraulic valve guide sleeve assembly is prone to deflection when guiding the guide rod. Chinese patent CN205309123U discloses "a wear-resistant guide sleeve, which includes an outer sleeve body and an inner sleeve body bonded to the outer sleeve body. The inner sleeve body is radially provided with inner oil holes, and the outer sleeve body is provided with outer oil holes corresponding to the inner oil holes. An arc-shaped groove communicating with the inner oil holes is provided on the inner wall of the inner sleeve body". It uses an inner sleeve body bonded to the outer sleeve body, resulting in insufficient connection stability between the outer sleeve body and the inner sleeve body. At the same time, it is difficult to supplement the lubricating fluid on the inner surface of the inner sleeve body, and the guide sleeve assembly is prone to serious wear due to lack of lubrication after long-term use.

[0004] Based on this, a wear-resistant guide sleeve assembly that supplements lubricating fluid through a pressure-regulating liquid storage mechanism is designed. Summary of the Utility Model

[0005] Aiming at the deficiencies existing in the prior art, the utility model provides a wear-resistant guide sleeve assembly, and the specific technical solution is as follows:

[0006] A wear-resistant guide sleeve assembly includes an outer sleeve and a lining sleeve with the same axis arranged inside the outer sleeve. A positioning member for mutual fixation is arranged between the outer sleeve and the lining sleeve;

[0007] A pressure-regulating liquid storage mechanism is arranged at the lower part of the outer sleeve. A diversion hole communicating with the pressure-regulating liquid storage mechanism is opened between the outer sleeve and the lining sleeve. The pressure-regulating liquid storage mechanism is communicated with a diversion ring opened on the inner surface of the lining sleeve through the diversion hole. A grid-shaped diversion groove is opened on the inner surface of the lining sleeve. There are two diversion rings, and the two diversion rings are located at both ends of the diversion groove.

[0008] Preferably, the pressure regulating liquid storage mechanism includes a liquid storage cavity provided at the bottom of the outer sleeve, and a pressure regulating plate movably installed in the liquid storage cavity. An annular array of springs is fixed on the upper surface of the pressure regulating plate, and the upper ends of the springs are fixed to the upper end surface of the liquid storage cavity. An exhaust hole communicating with the upper part of the liquid storage cavity is opened in the lower part of the outer sleeve, and the liquid storage cavity communicates with a diversion ring at the lower part of the inner lining sleeve through a diversion hole.

[0009] Preferably, the liquid storage mechanism further includes a liquid injection hole opened at the lower end of the outer sleeve and communicating with the liquid storage cavity. A sealing rubber plug for plugging is installed in the liquid injection hole, and a plugging screw for limiting the sealing rubber plug is screwed on the liquid injection hole.

[0010] Preferably, an inner sealing rubber ring is installed in a groove opened on the inner surface of the pressure regulating plate, and an outer sealing rubber ring is installed in a groove opened on the outer surface of the pressure regulating plate. Both the inner sealing rubber ring and the outer sealing rubber ring are in contact with the surface of the liquid storage cavity.

[0011] Preferably, the positioning member includes a positioning screw hole opened on the outer surface of the outer sleeve. A positioning screw is screwed in the positioning screw hole. A positioning hole is opened on the outer surface of the inner lining sleeve, and the end of the positioning screw is inserted into the interior of the positioning hole.

[0012] Preferably, four positioning members are symmetrically arranged.

[0013] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0014] 1. Through the positioning member provided between the outer sleeve and the inner lining sleeve, the outer sleeve and the inner lining sleeve are positioned by the positioning member, so that the inner lining sleeve increases the wear resistance of the inner surface of the outer sleeve. At the same time, when the inner lining sleeve is worn, the cost of replacing the guide sleeve assembly can be reduced by replacement; through the pressure regulating liquid storage mechanism provided at the lower part of the outer sleeve, and the pressure regulating liquid storage mechanism communicates with the diversion ring opened on the inner surface of the inner lining sleeve through a diversion hole, so that the lubricating liquid stored inside the pressure regulating liquid storage mechanism can be conveniently introduced into the diversion ring through the diversion hole. A diversion groove communicating with the diversion ring is also opened on the inner surface of the inner lining sleeve, so that the lubricating liquid inside the diversion groove can lubricate the inner surface of the inner lining sleeve. At the same time, due to a certain gap between the guide sleeve assembly and the guide rod, the lubricating liquid is easily discharged through the gap, resulting in a reduction of the lubricating liquid. The pressure regulating liquid storage mechanism adjusts the pressure to supplement the lubricating liquid in the diversion groove, so as to ensure that the guide sleeve assembly keeps the guide rod lubricated, and further improves the wear resistance of the guide sleeve assembly.

[0015] 2. A pressure-regulating liquid storage mechanism is composed of a liquid storage cavity, a pressure-regulating plate, a spring, and an exhaust hole. The spring is fixed between the pressure-regulating plate and the liquid storage cavity. Thus, after the liquid at the lower part of the liquid storage cavity is discharged through the diversion hole, due to the reduction of the volume at the lower part of the liquid storage cavity, the pressure-regulating plate moves downward under the action of the spring, avoiding the problem that the internal pressure in the liquid storage cavity decreases due to the reduction of the liquid. The exhaust hole opened at the lower part of the outer sleeve communicates with the upper part of the liquid storage cavity, facilitating the liquid storage cavity to supplement air through the exhaust hole. The pressure-regulating liquid storage mechanism further includes a liquid injection hole, a plugging screw, and a sealing rubber plug. The sealing rubber plug is installed inside the liquid injection hole through the plugging screw, facilitating the replenishment of lubricating liquid through the liquid injection hole after the lubricating liquid in the liquid storage cavity decreases. After the lubricating liquid is replenished in the liquid storage cavity, due to the increase of the liquid at the lower part of the liquid storage cavity, the pressure-regulating plate moves upward, causing the pressure-regulating plate to compress the spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0017] Figure 2 is a cross-sectional structural schematic diagram of the present invention;

[0018] Figure 3 is Figure 2 an enlarged structural schematic diagram of part A in

[0019] Figure 4 is a cross-sectional structural schematic diagram of the inner lining sleeve in the present invention;

[0020] Figure 5 is a structural schematic diagram of the pressure-regulating plate in the present invention.

[0021] Reference numerals: 1. Outer sleeve; 2. Inner lining sleeve; 3. Positioning screw hole; 4. Positioning screw; 5. Positioning hole; 6. Diversion ring; 7. Diversion groove; 8. Liquid storage cavity; 9. Diversion hole; 10. Liquid injection hole; 11. Plugging screw; 12. Sealing rubber plug; 13. Pressure-regulating plate; 14. Spring; 15. Inner sealing rubber ring; 16. Outer sealing rubber ring; 17. Exhaust hole. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0022] The technical solutions in the embodiments of the present invention will be described below.

[0023] Please refer to Figures 1-5 , the present invention provides a technical solution: a wear-resistant guide sleeve assembly, including an outer sleeve 1, and an inner lining sleeve 2 with the same axis arranged inside the outer sleeve 1. A positioning member for mutual fixation is arranged between the outer sleeve 1 and the inner lining sleeve 2;

[0024] A pressure-regulating liquid storage mechanism is provided at the lower part of the outer sleeve 1. A diversion hole 9 communicating with the pressure-regulating liquid storage mechanism is provided between the outer sleeve 1 and the inner lining sleeve 2. Moreover, the pressure-regulating liquid storage mechanism is communicated with a diversion ring 6 provided on the inner surface of the inner lining sleeve 2 through the diversion hole 9. A grid-shaped diversion groove 7 is provided on the inner surface of the inner lining sleeve 2. There are two diversion rings 6, and the two diversion rings 6 are located at both ends of the diversion groove 7.

[0025] In this embodiment, through the positioning member provided between the outer sleeve 1 and the inner lining sleeve 2, the outer sleeve 1 and the inner lining sleeve 2 are positioned through the positioning member, so that the inner lining sleeve 2 increases the wear resistance of the inner surface of the outer sleeve 1. At the same time, when the inner lining sleeve 2 is worn, the cost of replacing the guide sleeve assembly can be reduced by replacement; through the pressure-regulating liquid storage mechanism provided at the lower part of the outer sleeve 1, and the pressure-regulating liquid storage mechanism is communicated with the diversion ring 6 provided on the inner surface of the inner lining sleeve 2 through the diversion hole 9, it is convenient for the lubricating liquid stored inside the pressure-regulating liquid storage mechanism to be introduced into the diversion ring 6 through the diversion hole 9. Moreover, a diversion groove 7 communicating with the diversion ring 6 is provided on the inner surface of the inner lining sleeve 2, so that it is convenient for the lubricating liquid inside the diversion groove 7 to lubricate the inner surface of the inner lining sleeve 2. At the same time, due to a certain gap between the guide sleeve assembly and the guide rod, the lubricating liquid is easily discharged through the gap, resulting in a reduction of the lubricating liquid. The pressure-regulating liquid storage mechanism adjusts the pressure to supplement the lubricating liquid into the diversion groove 7, so as to ensure that the guide sleeve assembly keeps the guide rod lubricated, and further improves the wear resistance of the guide sleeve assembly.

[0026] Specifically, the pressure-regulating liquid storage mechanism includes a liquid storage cavity 8 provided at the bottom of the outer sleeve 1, and a pressure-regulating plate 13 movably installed in the liquid storage cavity 8. An annular array of springs 14 is fixed on the upper surface of the pressure-regulating plate 13, and the upper ends of the springs 14 are fixed to the upper end surface of the liquid storage cavity 8. An exhaust hole 17 communicating with the upper part of the liquid storage cavity 8 is provided at the lower part of the outer sleeve 1. The liquid storage cavity 8 is communicated with the diversion ring 6 at the lower part of the inner lining sleeve 2 through the diversion hole 9. In this embodiment, a pressure-regulating liquid storage mechanism is composed of the liquid storage cavity 8, the pressure-regulating plate 13, the springs 14 and the exhaust hole 17. The springs 14 are fixed between the pressure-regulating plate 13 and the upper end surface of the liquid storage cavity 8. Further, after the liquid in the lower part of the liquid storage cavity 8 is discharged through the diversion hole 9, due to the reduction of the liquid in the lower part of the liquid storage cavity 8, the pressure-regulating plate 13 moves downward under the action of the springs 14, avoiding the problem of the internal pressure reduction in the liquid storage cavity 8 due to the reduction of the liquid. The exhaust hole 17 provided at the lower part of the outer sleeve 1 is communicated with the upper part of the liquid storage cavity 8, so that it is convenient for the liquid storage cavity 8 to supplement air through the exhaust hole 17.

[0027] Specifically, the liquid storage mechanism further includes a liquid injection hole 10 opened at the lower end of the outer sleeve 1 and communicating with the liquid storage cavity 8. A sealing rubber plug 12 for plugging is installed in the liquid injection hole 10, and a plugging screw 11 for limiting the sealing rubber plug 12 is screwed into the liquid injection hole 10. In this embodiment, the pressure regulating liquid storage mechanism further includes the liquid injection hole 10, the plugging screw 11 and the sealing rubber plug 12. The sealing rubber plug 12 is installed inside the liquid injection hole 10 through the plugging screw 11, which is convenient for replenishing the lubricating liquid through the liquid injection hole 10 after the lubricating liquid in the liquid storage cavity 8 decreases. After the lubricating liquid is replenished in the liquid storage cavity 8, since the liquid level in the lower part of the liquid storage cavity 8 increases and drives the pressure regulating plate 13 to move upward, the pressure regulating plate 13 drives the spring 14 to compress.

[0028] Specifically, an inner sealing rubber ring 15 is installed in the groove opened on the inner surface of the pressure regulating plate 13, and an outer sealing rubber ring 16 is installed in the groove opened on the outer surface of the pressure regulating plate 13. Both the inner sealing rubber ring 15 and the outer sealing rubber ring 16 are in contact with the surface of the liquid storage cavity 8. In this embodiment, it is convenient for the inner sealing rubber ring 15 and the outer sealing rubber ring 16 to cooperate to seal the contact surface between the pressure regulating plate 13 and the liquid storage cavity 8.

[0029] Specifically, the positioning member includes a positioning screw hole 3 opened on the outer surface of the outer sleeve 1. A positioning screw 4 is screwed into the positioning screw hole 3. A positioning hole 5 is opened on the outer surface of the inner lining sleeve 2, and the end of the positioning screw 4 is inserted into the positioning hole 5. Four positioning members are symmetrically arranged. In this embodiment, through the positioning member composed of the positioning screw hole 3, the positioning screw 4 and the positioning hole 5, and four positioning members are symmetrically arranged, which increases the connection stability between the outer sleeve 1 and the inner lining sleeve 2. The positioning screw 4 is screwed into the positioning screw hole 3 opened on the outer surface of the outer sleeve 1, and at the same time, the end of the positioning screw 4 is inserted into the positioning hole 5 opened on the outer surface of the inner lining sleeve 2, so that the inner lining sleeve 2 is fixed inside the outer sleeve 1.

[0030] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A wear-resistant guide bushing assembly, comprising an outer sleeve (1) and a lining sleeve (2) disposed inside the outer sleeve (1) with the same axis. It is characterized in that: A positioning member for mutual fixation is provided between the outer sleeve (1) and the lining sleeve (2); A pressure-regulating liquid storage mechanism is provided at the lower part of the outer sleeve (1). A diversion hole (9) communicating with the pressure-regulating liquid storage mechanism is formed between the outer sleeve (1) and the lining sleeve (2), and the pressure-regulating liquid storage mechanism is communicated with a diversion ring (6) formed on the inner surface of the lining sleeve (2) through the diversion hole (9). A grid-shaped diversion groove (7) is formed on the inner surface of the lining sleeve (2). There are two diversion rings (6), and the two diversion rings (6) are located at both ends of the diversion groove (7).

2. The wear-resistant guide bushing assembly according to claim 1, wherein: The pressure-regulating liquid storage mechanism includes a liquid storage cavity (8) provided at the bottom of the outer sleeve (1) and a pressure-regulating plate (13) movably installed in the liquid storage cavity (8). Annularly-arrayed springs (14) are fixed on the upper surface of the pressure-regulating plate (13), and the upper ends of the springs (14) are fixed to the upper end surface of the liquid storage cavity (8). An exhaust hole (17) communicating with the upper part of the liquid storage cavity (8) is formed in the lower part of the outer sleeve (1), and the liquid storage cavity (8) is communicated with the diversion ring (6) at the lower part of the lining sleeve (2) through the diversion hole (9).

3. The wear-resistant guide bushing assembly according to claim 2, wherein: The liquid storage mechanism further includes a liquid injection hole (10) formed at the lower end of the outer sleeve (1) and communicating with the liquid storage cavity (8). A sealing rubber plug (12) for plugging is installed in the liquid injection hole (10), and a plugging screw (11) for limiting the sealing rubber plug (12) is screwed on the liquid injection hole (10).

4. A wear-resistant guide bushing assembly according to claim 2, wherein: An inner sealing rubber ring (15) is installed in a groove formed on the inner side surface of the pressure-regulating plate (13), and an outer sealing rubber ring (16) is installed in a groove formed on the outer side surface of the pressure-regulating plate (13). Both the inner sealing rubber ring (15) and the outer sealing rubber ring (16) are in contact with the surface of the liquid storage cavity (8).

5. A wear-resistant guide bushing assembly according to claim 1, characterized in that: The positioning member includes a positioning screw hole (3) formed on the outer surface of the outer sleeve (1). A positioning screw (4) is screwed in the positioning screw hole (3). A positioning hole (5) is formed on the outer surface of the lining sleeve (2), and the end of the positioning screw (4) is inserted into the inside of the positioning hole (5).

6. The wear-resistant guide bushing assembly according to claim 5, wherein: Four positioning members are symmetrically arranged.

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