Long-service-life oil leakage prevention reversing valve plug

Abstract

The utility model relates to the technical field of reversing valve plugs, and discloses a long-service-life oil leakage prevention reversing valve plug which comprises a valve pipe body connected with a plurality of oil pipes and further comprises a first electric push rod arranged on one side of the surface of the valve pipe body and used for exerting pushing force, and a movable piece is fixed to an output shaft of the first electric push rod. A plurality of plug rings are arranged on the surface of the moving part, a supporting part is fixed to one side of the surface of the valve pipe body, and a pressure applying mechanism used for applying air pressure is arranged on the surface of the supporting part. In the state switching process of the plug ring, the air bag can be contracted under the action of the pressure applying mechanism, so that friction between the air bag and the inner wall of the valve pipe body can be reduced, damage caused by friction is reduced, the service life of the device is prolonged, and in addition, when the plug ring works normally, the air bag can be prevented from falling off under the action of the pressure applying mechanism. The air bag expands under the guide of the plug ring, and then the air bag is matched with the plug ring to plug oil.

Description

Technical Field

[0001] The utility model relates to the technical field of reversing valve plugs, in particular to a high-life oil-proof reversing valve plug. Background Technique

[0002] A reversing valve is a direction control valve with more than two flow forms and more than two oil ports. It is a valve that realizes the communication, cut-off and reversal of hydraulic oil flow, as well as pressure unloading and sequential action control. This kind of conversion valve has a wide range of applications in petroleum and chemical production, and is most commonly used in the synthetic ammonia gas generation system. In addition, the reversing valve can also be made into a valve flap structure, which is mostly used in occasions with smaller flow rates. During operation, only need to rotate the handwheel to change the flow direction of the working fluid through the valve flap.

[0003] During the long-term use of the reversing valve, the internal plug needs to move. When the plug moves, it will rub against the inner cavity of the reversing valve, resulting in wear on the surface of the plug. Over time, this wear will gradually intensify, which will further cause the distance between the plug and the inner cavity of the reversing valve to increase, resulting in liquid leakage and other phenomena, and the service life will be reduced. Content of the Utility Model

[0004] The purpose of the utility model is to provide a high-life oil-proof reversing valve plug to solve the problems raised in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A high-life oil-proof reversing valve plug, including a valve body connected to several oil pipes, further including: a first electric push rod arranged on one side of the surface of the valve body for applying a driving force, the output shaft of the first electric push rod is fixed with a moving part, several plug rings are arranged on the surface of the moving part, a support part is fixed on one side of the surface of the valve body, a pressure application mechanism for applying air pressure is arranged on the surface of the support part, and the other end of the pressure application mechanism is communicated with an air bag.

[0006] Preferably, the pressure application mechanism includes several second electric push rods fixed on the surface of the support part, a piston air pipe is slidably arranged at the output end of the second electric push rod, the other end of the piston air pipe is communicated with a transverse pressure chamber, several telescopic pipes are communicated with the surface of the transverse pressure chamber, the other end of the telescopic pipe is communicated with a connecting air pipe, and the air bag is communicated with the surface of the connecting air pipe.

[0007] Preferably, the second electric push rods are annularly arranged on the surface of the support part, and the telescopic pipes and the connecting air pipes are annularly arranged in the inner cavity of the valve body.

[0008] Preferably, the first electric push rod and the second electric push rod are electrically connected.

[0009] Preferably, a sliding rod is fixed to one side of the inner cavity of the valve tube body, one end of the movable member slides on the surface of the sliding rod, and a spring is sleeved on the surface of the sliding rod.

[0010] Preferably, the material of the airbag is rubber, and the airbag is arranged between the plug rings on both sides.

[0011] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0012] During the switching state of the plugging ring of the utility model, the airbag can be contracted under the action of the pressure-applying mechanism, thereby reducing the friction between the airbag and the inner wall of the valve tube body, reducing the damage caused by the friction, and increasing the service life of the device. In addition, when the plugging ring is working normally, the airbag can be expanded under the action of the pressure-applying mechanism under the guidance of the plugging ring, thereby cooperating with the plugging ring to seal the oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0014] Figure 2 It is a schematic diagram of the three-dimensional structure of the valve tube body after being cut open in the utility model;

[0015] Figure 3 It is a schematic diagram of a partial three-dimensional structure of the utility model;

[0016] Figure 4 It is a schematic diagram of a local three-dimensional structure of the utility model.

[0017] In the figure: 1. valve body; 2. first electric push rod; 3. moving part; 4. plug ring; 5. sliding rod; 6. spring; 7. supporting part; 8. pressure mechanism; 81. second electric push rod; 82. piston air pipe; 83. horizontal pressure bin; 84. telescopic tube; 85. connecting air pipe; 9. air bag. DETAILED DESCRIPTION

[0018] 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.

[0019] See also Figures 1-4As shown in the figure, a high-life oil leakage-proof reversing valve plug includes a valve body 1 connected to several oil pipes. On one side of the surface of the valve body 1, there is a first electric push rod 2 for applying driving force. The output shaft of the first electric push rod 2 is fixed with a moving part 3. On the surface of the moving part 3, there are several plug rings 4. On one side of the surface of the valve body 1, there is a support part 7 fixed. On the surface of the support part 7, there is a pressure application mechanism 8 for applying air pressure. The other end of the pressure application mechanism 8 is connected to an airbag 9.

[0020] In the process of the plug ring 4 switching states, under the action of the pressure application mechanism 8, the airbag 9 can be contracted, thereby reducing the friction between the airbag 9 and the inner wall of the valve body 1, reducing the damage caused by friction, and improving the service life of the device. In addition, when the plug ring 4 is working normally, under the action of the pressure application mechanism 8, the airbag 9 can be expanded under the guidance of the plug ring 4, thereby cooperating with the plug ring 4 to block the oil.

[0021] The pressure application mechanism 8 includes several second electric push rods 81 fixed on the surface of the support part 7. The output end of the second electric push rod 81 is slidably provided with a piston air pipe 82. The other end of the piston air pipe 82 is connected to a transverse pressure chamber 83. On the surface of the transverse pressure chamber 83, there are several telescopic pipes 84 connected. The other end of the telescopic pipe 84 is connected to a connecting air pipe 85. The airbag 9 is connected to the surface of the connecting air pipe 85. In this embodiment, through the settings of the second electric push rod 81, the piston air pipe 82, the transverse pressure chamber 83, the telescopic pipe 84 and the connecting air pipe 85, when the second electric push rod 81 works, the gas inside the piston air pipe 82 can be extruded under the action of the output end of the second electric push rod 81, and then under the action of the transverse pressure chamber 83, the telescopic pipe 84 and the connecting air pipe 85, the airbag 9 can be expanded.

[0022] The second electric push rods 81 are annularly arrayed on the surface of the support part 7, and the telescopic pipes 84 and the connecting air pipes 85 are annularly arrayed in the inner cavity of the valve body 1. In this embodiment, through this setting, the uniformity of the gas in the telescopic pipes 84 and the connecting air pipes 85 is improved, and the practicability of the device is improved.

[0023] The first electric push rod 2 and the second electric push rod 81 are electrically connected. In this embodiment, through this setting, when the staff uses the first electric push rod 2 to change the positions of the moving part 3 and the plug ring 4, the working sequence between the first electric push rod 2 and the second electric push rod 81 has a certain rule.

[0024] On one side of the inner cavity of the valve body 1, there is a sliding rod 5 fixed. One end of the moving part 3 slides on the surface of the sliding rod 5. A spring 6 is sleeved on the surface of the sliding rod 5. In this embodiment, through the settings of the sliding rod 5 and the spring 6, the stability of the moving part 3 during movement is improved, and a limit is provided for the movement of the moving part 3.

[0025] The material of the airbag 9 is rubber, and the airbag 9 is arranged between the two end plug rings 4. In this embodiment, through this arrangement, since the rubber material is one of the common materials for the bladder of a hydraulic accumulator and has excellent sealing performance and wear resistance, the service life of the airbag 9 can be improved. Moreover, the airbag 9 is arranged between the two end plug rings 4, which can guide the expansion of the airbag 9.

[0026] Working principle: During use, the staff can connect the valve pipe body 1 to several oil pipe lines. And during use, the first electric push rod 2 drives the moving part 3, the end plug ring 4 and the airbag 9 to move to achieve the purpose of commutation. When the first electric push rod 2 drives the end plug ring 4 and the airbag 9 to move, the second electric push rod 81 electrically connected to the first electric push rod 2 can start to work. When the end plug ring 4 and the airbag 9 need to move, the second electric push rod 81 contracts, thereby reducing the air pressure inside the airbag 9 and causing the airbag 9 to contract. When the end plug ring 4 drives the airbag 9 to move, the friction between the airbag 9 and the inner wall of the valve pipe body 1 can be reduced, thereby improving the service life of the airbag 9. When the first electric push rod 2 stops working, several second electric push rods 81 can squeeze the piston air pipe 82, thereby causing the airbag 9 to expand. And under the guidance of the two end plug rings 4, the airbag 9 contacts the inner cavity of the valve pipe body 1. With the cooperation of the airbag 9 and the end plug ring 4, a sealing effect is achieved. Through this method, not only the service life can be improved, but also the sealing effect on the oil can be improved.

[0027] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the term "comprising", "including" or any other variant thereof is intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements but also other elements not expressly listed, or also includes elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "including a..." does not exclude the existence of additional identical elements in the process, method, article or device including the said element.

[0028] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A long-life anti-leakage oil reversing valve plug, comprising a valve body (1) connected to a plurality of oil pipes, characterized in that: Also includes: A first electric push rod (2) for applying a driving force is arranged on one side of the surface of the valve tube body (1); a moving part (3) is fixed to the output shaft of the first electric push rod (2); a plurality of plug rings (4) are arranged on the surface of the moving part (3); a support part (7) is fixed to one side of the surface of the valve tube body (1); a pressure mechanism (8) for applying air pressure is arranged on the surface of the support part (7); and the other end of the pressure mechanism (8) is connected to an air bag (9).

2. The long-life anti-leakage oil reversing valve plug according to claim 1 is characterized by: The pressure mechanism (8) comprises a plurality of second electric push rods (81) fixed to the surface of the support member (7); a piston air pipe (82) is slidably provided at the output end of the second electric push rod (81); the other end of the piston air pipe (82) is connected to a transverse pressure bin (83); the surface of the transverse pressure bin (83) is connected to a plurality of telescopic tubes (84); the other end of the telescopic tube (84) is connected to a connecting air pipe (85); and the air bag (9) is connected to the surface of the connecting air pipe (85).

3. The long-life anti-leakage oil reversing valve plug according to claim 2 is characterized by: The second electric push rods (81) are arranged in a circular array on the surface of the support member (7), and the telescopic tubes (84) and the connecting air pipes (85) are arranged in a circular array in the inner cavity of the valve tube body (1).

4. The long-life anti-leakage oil reversing valve plug according to claim 2 is characterized by: The first electric push rod (2) and the second electric push rod (81) are electrically connected.

5. The long-life anti-leakage oil reversing valve plug according to claim 1 is characterized by: A slide rod (5) is fixed to one side of the inner cavity of the valve tube body (1), one end of the moving member (3) slides on the surface of the slide rod (5), and a spring (6) is sleeved on the surface of the slide rod (5).

6. The long-life anti-leakage oil reversing valve plug according to claim 1 is characterized by: The material of the airbag (9) is rubber, and the airbag (9) is arranged between the plug rings (4) on both sides.

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