Grease pressure reducing valve capable of remotely regulating pressure

Abstract

The utility model relates to the technical field of mechanical equipment, in particular to a remote pressure-adjustable grease pressure reducing valve which comprises a valve body. A pressure regulating mechanism is arranged at the upper end of the valve body; a grease inlet is formed in the left side of the valve body, a grease outlet is formed in the outer wall of the upper end of the other side of the valve body, the bottom end of the valve body is in threaded connection with a screw plug, and a sealing mechanism is arranged in the upper end of the screw plug. High-pressure grease can be reduced to the use pressure, meanwhile, the oil pressure is kept stable in the use process of the oil valve, the stable oil pressure is the premise of accurate quantification, meanwhile, different pressures can be adjusted in real time in some application occasions, different grease pressure output can be adjusted in real time in cooperation with a pneumatic pressure proportional valve, and the oil valve is convenient to use. And meanwhile, as the oil pressure is controlled through the air pressure, the defect that the oil pressure fluctuation of a pressure reducing valve with a disc spring as a pressure adjusting element is relatively large is overcome.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical equipment, in particular to a grease pressure reducing valve capable of remotely regulating pressure. Background Art

[0002] The grease pressure reducing valve is an important component used to control the grease pressure in the lubrication system. Its main function is to reduce the system pressure during the grease supply process, ensuring that the grease is supplied to the equipment parts that need lubrication at an appropriate pressure and flow rate, thereby effectively protecting the equipment and extending its service life.

[0003] In the lubrication grease circuit, the grease pressure directly pumped out by the pneumatic grease pump is very high and cannot be directly input into the lubrication valve for use. Therefore, it is necessary to design a grease pressure reducing valve that can remotely adjust the pressure. Utility Model Content

[0004] The utility model aims to provide a grease pressure reducing valve capable of remotely regulating pressure, so as to solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A grease pressure reducing valve capable of remotely regulating pressure, comprising

[0007] Valve body;

[0008] A pressure regulating mechanism is provided at the upper end of the valve body;

[0009] A grease inlet is provided on the left side of the valve body, a grease outlet is provided on the outer wall of the upper end of the other side of the valve body, a screw plug is threadedly connected to the bottom end of the valve body, and a sealing mechanism is provided inside the upper end of the screw plug.

[0010] Preferably, the pressure regulating mechanism comprises a lower shell, the lower shell is arranged at the top end of the valve body, an upper shell is arranged at the upper end of the lower shell, an air inlet is opened at the top end of the upper shell, an output shaft is arranged at the middle part of the upper shell through a locking nut 1, an air piston is arranged at one end of the output shaft located inside the lower shell, a retaining ring is arranged between the air piston and the locking nut 1, and a sealing ring 1 is arranged between the upper shell and the lower shell;

[0011] Preferably, the pressure regulating mechanism further comprises a guide sleeve, the guide sleeve is arranged at the lower end of the lower shell, and the valve body is fixedly connected to the lower shell through a locking nut 2;

[0012] Preferably, a feedback piston is provided at the inner upper end of the valve body, the top end of the feedback piston is fixedly connected to the lower end of the output shaft, and a second sealing ring is provided at the outer wall of the feedback piston;

[0013] Preferably, a mounting pin is provided at the top of the screw plug, and a sealing steel ball is movably mounted on the top of the mounting pin through a return spring;

[0014] Preferably, a sealing ring three is provided between the screw plug and the valve body.

[0015] Compared with the prior art, the beneficial effects of the utility model are:

[0016] This grease pressure-reducing valve with remote pressure adjustment can reduce high-pressure grease to the working pressure while maintaining stable oil pressure during the use of the oil valve. Stable oil pressure is a prerequisite for quantitative accuracy. At the same time, different pressures can be adjusted in real time in some applications, and different grease pressure outputs can be adjusted in real time in conjunction with a pneumatic pressure proportional valve to achieve remote real-time adjustment of different pressure outputs. At the same time, because the oil pressure is controlled by air pressure, the disadvantage of relatively large oil pressure fluctuations in the pressure reducing valve with disc springs as the pressure adjusting element is eliminated. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall main structure of the utility model;

[0018] Figure 2 This is a schematic diagram of the screw plug installation structure of the utility model;

[0019] Figure 3 It is a schematic diagram of the overall cross-sectional structure of the utility model.

[0020] In the figure: 1. air inlet; 2. upper shell; 3. locking nut 1; 4. sealing ring 1; 5. retaining ring; 6. air piston; 7. output shaft; 8. guide sleeve; 9. locking nut 2; 10. feedback piston; 11. sealing ring 2; 12. valve body; 13. sealing steel ball; 14. return spring; 15. mounting pin; 16. screw plug; 17. sealing ring 3; 18. grease inlet; 19. grease outlet; 20. lower shell. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0022] like Figure 1-3 As shown, a technical solution provided by the utility model:

[0023] A grease pressure reducing valve capable of remotely regulating pressure comprises a valve body 12; a pressure regulating mechanism is arranged at the upper end of the valve body 12; a grease inlet 18 is provided on the left side of the valve body 12, a grease outlet 19 is provided on the outer wall of the upper end of the other side of the valve body 12, a screw plug 16 is threadedly connected to the bottom end of the valve body 12, and a sealing mechanism is arranged inside the upper end of the screw plug 16; the pressure regulating mechanism comprises a lower shell 20, the lower shell 20 is arranged at the top end of the valve body 12, an upper shell 2 is arranged at the upper end of the lower shell 20, an air inlet 1 is arranged at the top end of the upper shell 2, an output shaft 7 is arranged in the middle part of the upper shell 2 through a locking nut 3, an air piston 6 is arranged at one end of the output shaft 7 located inside the lower shell 20, and an air A retaining ring 5 is provided between the piston 6 and the locking nut 3, and a sealing ring 4 is provided between the upper shell 2 and the lower shell 20; the pressure regulating mechanism also includes a guide sleeve 8, which is provided at the lower end of the lower shell 20, and the valve body 12 is fixedly connected to the lower shell 20 through a locking nut 9; a feedback piston 10 is provided at the upper end of the inner part of the valve body 12, and the top end of the feedback piston 10 is fixedly connected to the lower end of the output shaft 7, and a sealing ring 11 is provided at the outer wall of the feedback piston 10; a mounting pin 15 is provided at the top end of the screw plug 16, and a sealing steel ball 13 is movably installed at the top end of the mounting pin 15 through a reset spring 14; a sealing ring 17 is provided between the screw plug 16 and the valve body 12;

[0024] In this embodiment, the air pressure of the air inlet 1 proportionally determines the outlet pressure of the grease of the pressure reducing valve. After the compressed air of the set pressure is introduced into the air inlet 1, grease enters the grease inlet 18, and the grease pressure of the grease outlet 19 increases to the set level. When a part of the grease inside the grease outlet 19 is consumed, the grease pressure inside the grease outlet 19 decreases accordingly. At this time, the feedback piston 10 descends, presses down the sealing steel ball 13 and compresses the return spring 14. The grease in the oil chamber immediately enters the grease inlet 18 and enters the grease outlet 19 through the channel opened by the sealing steel ball 13. After the grease pressure inside the grease outlet 19 increases, it drives the feedback piston 10 to return. The sealing steel ball 13 is reset and lifted by the return spring 14 and then seals the channel again, so that the grease pressure inside the grease outlet 19 remains unchanged.

[0025] Working principle: The air pressure of the air inlet 1 proportionally determines the outlet pressure of the grease of the pressure reducing valve. After the compressed air of the set pressure is introduced into the air inlet 1, the grease enters the grease inlet 18, and the grease pressure of the grease outlet 19 increases to the set level. When a part of the grease inside the grease outlet 19 is consumed, the grease pressure inside the grease outlet 19 decreases accordingly. At this time, the feedback piston 10 descends, presses down the sealing steel ball 13 and compresses the reset spring 14. The grease in the oil chamber immediately enters the grease inlet 18 and enters the grease outlet 19 through the channel opened by the sealing steel ball 13. After the grease pressure inside the grease outlet 19 increases, it drives the feedback piston 10 to return. The sealing steel ball 13 is reset and lifted by the reset spring 14 and then seals the channel again, so that the grease pressure inside the grease outlet 19 remains unchanged. At the same time, a pressure proportional valve is connected to the upper end of the upper shell 2. The pressure proportional valve can be used to remotely control the pressure of the gas entering the upper chamber, thereby proportionally adjusting the pressure of the grease outlet 19 of the pressure reducing valve.

[0026] The above shows and describes the basic principle, main features and advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only preferred examples of the utility model and are not used to limit the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection of the utility model is defined by the attached claims and their equivalents.

Claims

1. A grease pressure reducing valve capable of remote pressure regulation, characterized in that: include Valve body (12); The upper end of the valve body (12) is provided with a pressure regulating mechanism; A grease inlet (18) is provided on the left side of the valve body (12), and a grease outlet (19) is provided on the outer wall of the upper end of the other side of the valve body (12). A screw plug (16) is threadedly connected to the bottom end of the valve body (12), and a sealing mechanism is provided inside the upper end of the screw plug (16).

2. The grease pressure reducing valve capable of remote pressure regulation according to claim 1, characterized in that: The pressure regulating mechanism comprises a lower shell (20), the lower shell (20) is arranged at the top end of the valve body (12), an upper shell (2) is arranged at the upper end of the lower shell (20), an air inlet (1) is opened at the top end of the upper shell (2), an output shaft (7) is arranged in the middle part of the upper shell (2) through a locking nut (3), a gas piston (6) is arranged at one end of the output shaft (7) located inside the lower shell (20), a retaining ring (5) is arranged between the gas piston (6) and the locking nut (3), and a sealing ring (4) is arranged between the upper shell (2) and the lower shell (20).

3. The grease pressure reducing valve capable of remote pressure regulation according to claim 2, characterized in that: The pressure regulating mechanism also includes a guide sleeve (8), which is arranged at the lower end of the lower shell (20). The valve body (12) is fixedly connected to the lower shell (20) via a second locking nut (9).

4. The grease pressure reducing valve capable of remote pressure regulation according to claim 3, characterized in that: A feedback piston (10) is arranged at the inner upper end of the valve body (12), the top end of the feedback piston (10) is fixedly connected to the lower end of the output shaft (7), and a sealing ring 2 (11) is arranged on the outer wall of the feedback piston (10).

5. The grease pressure reducing valve capable of remote pressure regulation according to claim 1, characterized in that: The top end of the screw plug (16) is provided with a mounting pin (15), and the top end of the mounting pin (15) is movably mounted with a sealing steel ball (13) via a return spring (14).

6. The grease pressure reducing valve capable of remote pressure regulation according to claim 1, characterized in that: A sealing ring (17) is provided between the screw plug (16) and the valve body (12).

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