A new type of exhaust device for a hydraulic cylinder

Abstract

The utility model provides a novel emission type hydraulic cylinder exhaust device belongs to hydraulic cylinder exhaust technical field, including the fixed frame of setting in one side of hydraulic cylinder, fixedly installed with the gas collecting tank on the fixed frame, the port of exhaust pipe is away from the embedded setting of gas collecting tank in the inside of hydraulic cylinder, and exhaust pipe is linked together with the three -way pipe through the exhaust valve, and the inner chamber of exhaust pipe is embeddedly provided with the cylindrical plug, is equipped with the spiral hole on the cylindrical plug, the cylindrical plug fixedly embeddedly installs in the inside of exhaust pipe, the spiral hole is set up to the other side on the one side of cylindrical plug, makes exhaust pipe inside pass through spiral channel and three -way pipe link together, pass through the spiral channel in the inside of exhaust pipe, make hydraulic oil and gas pass through the inner chamber of exhaust pipe, flow path is long, flow rate slows down, plays the role of buffering and preliminary separation gas, thereby has improved the exhaust effect of hydraulic cylinder, reduced the flow effect of hydraulic oil.

Description

Technical Field

[0001] This utility model relates to the field of hydraulic cylinder exhaust technology, specifically a novel launch-type hydraulic cylinder exhaust device. Background Technology

[0002] Hydraulic cylinders, as hydraulic actuators that convert hydraulic energy into mechanical energy and perform linear reciprocating motion, are widely used in many fields such as industrial production and engineering machinery. In some special operating scenarios, such as the ejection devices of specific machinery and the rapid propulsion mechanisms of certain automated equipment, the stability and response speed of the launch-type hydraulic cylinder are extremely important.

[0003] For launching hydraulic cylinders, the introduction of air can cause numerous serious problems. Air is compressible, and during operation, the internal pressure of the launching hydraulic cylinder fluctuates drastically. Air bubbles are compressed under high pressure and expand under low pressure, leading to unstable output force, vibration, and creeping phenomena. This severely affects the smoothness and accuracy of the launching action. Long-term operation may even damage the internal seals and cylinder walls due to cavitation, shortening the cylinder's lifespan and increasing equipment maintenance costs.

[0004] A novel exhaust device for a launching hydraulic cylinder is disclosed in a related technology (publication number: CN207961133U). The disclosed technical solution is that the gas can be collected and discharged through the gas collection chamber, so as to ensure that too much gas will not accumulate in the cylinder and to ensure the normal use of the hydraulic cylinder.

[0005] The above-disclosed technical solutions reveal the following problems: For the launch-type hydraulic cylinder, during the exhaust process, the hydraulic oil remaining in the cylinder will flow into the exhaust pipe along with the flow of the exhaust process. The hydraulic oil in the exhaust pipe needs to be collected in a timely manner. If there is too much hydraulic oil in the pipe, it will affect the smoothness of the exhaust process and may even damage the components.

[0006] In response, we propose a novel launch-type hydraulic cylinder exhaust device.

[0007] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background section of this application, and therefore may include prior art information that does not constitute prior art information known to those skilled in the art. Utility Model Content

[0008] This utility model aims to solve at least one of the technical problems existing in the prior art or related technologies. To address the problem of in-cylinder venting in the prior art, this utility model provides a novel launch-type hydraulic cylinder venting device. It employs a bidirectional independent venting control structure combined with a monitoring structure for in-cylinder oil discharge to achieve the effect of protecting the hydraulic cylinder. Its specific technical solution is as follows:

[0009] A novel launch-type hydraulic cylinder exhaust device includes a fixed frame mounted on one side of the hydraulic cylinder. An air collection tank is fixedly installed on the fixed frame. The air inlet of the air collection tank is fixedly connected to two exhaust pipes via a three-way pipe. The port of each exhaust pipe furthest from the air collection tank is embedded inside the hydraulic cylinder. The exhaust pipe is connected to the three-way pipe via an exhaust valve. An oil baffle plate is rotatably mounted on the inner wall of the exhaust pipe, and a pipe opening and closing component for flipping the oil baffle plate is provided on the outer wall of the exhaust pipe. A cylindrical plug is embedded in the inner cavity of the exhaust pipe. A spiral hole is formed on the cylindrical plug, and the spiral hole penetrates the inner cavity of the cylindrical plug. The oil baffle plate, the cylindrical plug, and the exhaust valve are sequentially located furthest from the hydraulic cylinder.

[0010] In the above technical solution, the pipe opening and closing component includes a cylinder rotatably disposed on the outer wall of the exhaust pipe, a transmission component rotatably connected to the movable end of the cylinder, a movable shaft symmetrically fixed to the circumferential outer wall of the oil baffle plate, the movable shaft being rotatably disposed on the inner wall of the exhaust pipe and extending outward, and the side of the transmission component away from the movable end of the cylinder being sleeved on the outer wall of the movable shaft.

[0011] A filter screen is embedded between the cylindrical plug and the oil-blocking plate, and the filter screen is located inside the exhaust pipe.

[0012] An annular seat is fixedly installed on the side wall of the fixed frame. A guide ring is embedded in the inner cavity of the annular seat, and a non-contact liquid level sensor is sleeved on the outer wall of the guide ring.

[0013] A fixing post is evenly arranged circumferentially between the annular seat and the guide ring. A sleeve is fixedly installed on the side wall of the non-contact liquid level sensor, and a slot is opened on the outer wall of the sleeve, and the slot covers the outside of the fixing post.

[0014] A vent valve is installed on the outer wall of the gas collecting tank.

[0015] The gas collection tank has a spherical structure.

[0016] The inner wall of the spiral hole is coated with a corrosion-resistant coating.

[0017] Compared with the prior art, the beneficial effects of this utility model are:

[0018] 1. When venting the internal cavity of the hydraulic cylinder, open the vent valve on the vent pipe connected to the corresponding cylinder cavity. The extension and retraction of the piston rod within the hydraulic cylinder allows the gas inside the cylinder to enter the three-way pipe through the vent pipe, and finally be stored in the gas collection tank. The vent valve controls the opening and closing of the vent pipe and the three-way pipe, allowing independent control of the two vent pipes and thus enabling separate control of the venting operation in the two parts of the hydraulic cylinder.

[0019] Second, the spiral channel inside the exhaust pipe lengthens the flow path and slows the flow velocity of hydraulic oil and gas as they pass through the inner cavity of the exhaust pipe, thus buffering and initially separating the gases. This improves the exhaust effect of the hydraulic cylinder and reduces the flow efficiency of the hydraulic oil.

[0020] 3. During the use of the hydraulic cylinder, open the solenoid valve of the air guide pipe connected to the cylinder cavity, so that the moving end of the cylinder drives one end of the hinged transmission component to move, so that the other end of the transmission component drives the moving shaft to rotate, so that the moving shaft drives the oil baffle plate to roll against the inner wall of the exhaust pipe. By adjusting the angle of the oil baffle plate, the hydraulic oil is isolated, preventing the hydraulic oil from entering the exhaust pipe during the operation of the hydraulic cylinder.

[0021] 4. If the liquid level in the gas collection tank rises to the preset threshold, the non-contact liquid level sensor sends a signal to the controller through the signal processing module. The controller immediately issues a command to close the exhaust valve, allowing relevant personnel to handle the situation in a timely manner. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the structure of a novel launching hydraulic cylinder exhaust device according to the present invention;

[0023] Figure 2 This is a cross-sectional view of the exhaust pipe portion of this utility model;

[0024] Figure 3 This is a cross-sectional view of the cylindrical plug portion of this utility model;

[0025] Figure 4 This is a schematic diagram of the gas collecting tank part of this utility model;

[0026] Figure 5 This is a schematic diagram of the structure of the annular seat and guide ring of this utility model;

[0027] Figure 6 This is a schematic diagram of the structure of the sleeve and the non-contact liquid level sensor part of this utility model.

[0028] Figure 7 This is a schematic diagram of the cylindrical plug and exhaust pipe of this utility model;

[0029] in, Figures 1 to 7The correspondence between the reference numerals and component names in the attached drawings is as follows: 1-fixed bracket, 2-air collection tank, 3-tee pipe, 4-exhaust pipe, 5-exhaust valve, 6-oil baffle plate, 7-cylindrical plug, 8-spiral hole, 9-cylinder, 10-fixed rod, 11-oil inlet, 12-transmission component, 13-moving shaft, 14-fixed column, 15-guide ring, 16-connecting column, 17-ring seat, 18-support rod, 19-connecting ear, 20-filter screen, 21-vent valve, 22-sleeve, 23-non-contact liquid level sensor, 24-slot. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] The following are specific implementation cases and appendices. Figure 1 -Appendix Figure 7 The present invention will be further described below, but the present invention is not limited to these embodiments.

[0032] A novel launch-type hydraulic cylinder exhaust device includes a mounting bracket 1 disposed on one side of the hydraulic cylinder, on which an air collection tank 2 is fixedly mounted. A connecting lug 19 is mounted on the mounting bracket 1, which is bolted to a position near the hydraulic cylinder. One end of a fixing rod 10 is vertically fixed to the side wall of the mounting bracket 1, and the other end of the fixing rod 10 is fixed to the outer wall of the air collection tank 2, thereby fixing the air collection tank 2 to the mounting bracket 1.

[0033] An exhaust pipe 4 is fixedly connected to the air inlet of the air collection tank 2 via a three-way pipe 3. A fixing seat is fitted onto the outer wall of the three-way pipe 3. One end of a vertically fixed connecting column 16 is fixed to the outer wall of the fixing seat, and the other end of the connecting column 16 is vertically fixed to the side wall of the fixing frame 1, thus fixing the three-way pipe 3 to the fixing frame 1. The port of the exhaust pipe 4 furthest from the air collection tank 2 is embedded inside the hydraulic cylinder, and the exhaust pipe 4 is connected to the three-way pipe 3 via an exhaust valve 5. The three ports of the three-way pipe 3 are connected to the two exhaust pipes 4 and the air inlet of the air collection tank 2. The other ends of the two exhaust pipes 4 extend into the cylinder body of the hydraulic cylinder.

[0034] The hydraulic cylinder has oil inlets 11 at both the bottom and top of the cylinder body. Hydraulic oil enters the interior of the oil inlets 11, causing the piston rod of the hydraulic cylinder to move in and out. The exhaust valve 5 controls the opening and closing of the exhaust pipe 4 and the three-way pipe 3, allowing the two exhaust pipes 4 to be controlled independently. This enables separate control of the exhaust operation of the two parts of the hydraulic cylinder.

[0035] An oil baffle plate 6 is rotatably mounted on the inner wall of the exhaust pipe 4, and an opening and closing component for flipping the oil baffle plate 6 is provided on the outer wall of the exhaust pipe 4. The circular oil baffle plate 6 rotates against the inner wall of the exhaust pipe 4. When it rotates to be parallel to the radial direction of the exhaust pipe 4, the oil baffle plate 6 separates the connection between the exhaust pipe 4 and the cylinder body of the hydraulic cylinder, preventing hydraulic oil from entering the interior of the exhaust pipe 4.

[0036] During the internal venting operation of the hydraulic cylinder, the vent valve 5 on the vent pipe 4 connected to the corresponding cylinder cavity is opened. Through the extension and retraction of the piston rod inside the hydraulic cylinder, the gas inside the cylinder enters the interior of the three-way pipe 3 along the vent pipe 4, and is finally stored in the interior of the gas collection tank 2.

[0037] A cylindrical plug 7 is embedded in the inner cavity of the exhaust pipe 4, and a spiral hole 8 is formed on the cylindrical plug 7. The cylindrical plug 7 is fixedly embedded inside the exhaust pipe 4, and a spiral through hole is formed from one side to the other, so that the interior of the exhaust pipe 4 is connected to the three-way pipe 3 through the spiral through hole. By using the spiral through hole inside the exhaust pipe 4, the flow path of hydraulic oil and gas as they pass through the inner cavity of the exhaust pipe 4 is lengthened and the flow velocity is slowed down, which plays a role in buffering and initial separation of gas. This improves the exhaust effect of the hydraulic cylinder and reduces the flow effect of hydraulic oil.

[0038] The pipe opening and closing component includes a cylinder 9 rotatably mounted on the outer wall of the exhaust pipe 4. The movable end of the cylinder 9 is rotatably connected to a transmission component 12. A movable shaft 13 is symmetrically fixed to the outer circumferential wall of the oil baffle plate 6. The movable shaft 13 is rotatably mounted on the inner wall of the exhaust pipe 4 and extends outward. The side of the transmission component 12 away from the movable end of the cylinder 9 is sleeved on the outer wall of the movable shaft 13.

[0039] The cylinder barrel end of cylinder 9 is hinged to the outer wall of exhaust pipe 4, and cylinder 9 is controlled to extend and retract through the solenoid valve of the air guide pipe connected to the inner cavity.

[0040] During the use of the hydraulic cylinder, the solenoid valve of the air guide pipe connected to the inner cavity of the cylinder 9 is opened, so that the movable end of the cylinder 9 drives one end of the hinged transmission component 12 to move, so that the other end of the transmission component 12 drives the movable shaft 13 to rotate, so that the movable shaft 13 drives the oil blocking plate 6 to adhere to the inner wall of the exhaust pipe 4 and flip. By adjusting the angle of the oil blocking plate 6, the hydraulic oil is isolated, preventing the hydraulic oil from entering the exhaust pipe 4 during the operation of the hydraulic cylinder.

[0041] It is worth noting that a filter screen 20 is embedded between the cylindrical plug 7 and the oil baffle plate 6, and the filter screen 20 is located inside the exhaust pipe 4. The filter screen 20 is made of stainless steel, and its mesh size is precisely designed to effectively filter impurities in the hydraulic oil and prevent impurities from entering the three-way pipe 3, without causing excessive resistance to the flow of hydraulic oil and gas.

[0042] In addition, an annular seat 17 is fixedly installed on the side wall of the mounting bracket 1, and the annular seat 17 is fixed to the mounting bracket 1 by a support rod 18. A guide ring 15 is embedded in the inner cavity of the annular seat 17, and a non-contact liquid level sensor 23 is sleeved on the outer wall of the guide ring 15. The signal processing module of the non-contact liquid level sensor 23 is fixed on the mounting bracket 1, and the probe part of the non-contact liquid level sensor 23 slides against the outer wall of the guide ring 15. According to the installation angle of the gas collecting tank 2, the non-contact liquid level sensor 23 slides to the corresponding monitoring position, and the non-contact liquid level sensor 23 monitors the liquid level in the gas collecting tank 2 in real time. If the liquid level in the gas collecting tank 2 rises to a preset threshold, the non-contact liquid level sensor 23 sends a signal to the controller through the signal processing module, and the controller immediately issues a command to close the exhaust valve 5, so that relevant personnel can handle the situation in a timely manner.

[0043] In addition, fixing posts 14 are evenly arranged circumferentially between the annular seat 17 and the guide ring 15. The multiple circumferential fixing posts 14 ensure the stability between the guide ring 15 and the annular seat 17. A sleeve 22 is fixedly installed on the side wall of the non-contact liquid level sensor 23, and a slot 24 is formed on the outer wall of the sleeve 22, covering the outside of the fixing posts 14. The slot 24 makes it easier for the non-contact liquid level sensor 23 to be snapped onto the outside of the guide ring 15, while also providing clearance to prevent interference between the sleeve 22 and the fixing posts 14.

[0044] A vent valve 21 is installed on the outer wall of the gas collection tank 2. When the gas collection tank 2 is full, the gas can be safely discharged to a designated area through the vent valve 21.

[0045] Furthermore, the air collection tank 2 has a spherical structure. The spherical shape of the air collection tank 2 ensures that the hydraulic oil collects at the bottom after entering. The spherical structure does not restrict the installation position of the fixing bracket 1. No matter which direction the air collection tank 2 is installed, the hydraulic oil entering the tank will fall to the bottom.

[0046] The inner wall of the spiral hole 8 is coated with a corrosion-resistant coating. This corrosion-resistant coating effectively reduces resistance and wear during the flow of hydraulic oil and gas.

[0047] In the description of this utility model, it should be understood that the terms "coaxial", "bottom", "one end", "top", "middle", "other end", "upper", "side", "top", "inner", "front", "center", "both ends", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0048] Furthermore, the terms "first," "second," "third," and "fourth" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first," "second," "third," or "fourth" may explicitly or implicitly include at least one of those features.

[0049] In this utility model, unless otherwise explicitly specified and limited, the terms "installation", "setting", "connection", "fixing", "screw connection", etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal connection of two components or the interaction between two components. Unless otherwise explicitly limited, those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0050] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A novel launch-type hydraulic cylinder exhaust device, characterized in that: The system includes a fixed frame (1) on one side of the hydraulic cylinder, on which a gas collection tank (2) is fixedly installed. The air inlet of the gas collection tank (2) is connected to two exhaust pipes (4) through a three-way pipe (3). The port of each exhaust pipe (4) away from the gas collection tank (2) is embedded inside the hydraulic cylinder. The exhaust pipe (4) is connected to the three-way pipe (3) through an exhaust valve (5). An oil baffle plate (6) is rotatably provided on the inner wall of the exhaust pipe (4). An opening and closing component for flipping the oil baffle plate (6) is provided on the outer wall of the exhaust pipe (4). A cylindrical plug (7) is embedded in the inner cavity of the exhaust pipe (4). A spiral hole (8) is opened on the cylindrical plug (7). The spiral hole (8) penetrates the inner cavity of the cylindrical plug (7) laterally. The oil baffle plate (6), the cylindrical plug (7), and the exhaust valve (5) are sequentially away from the hydraulic cylinder.

2. The novel launch-type hydraulic cylinder exhaust device according to claim 1, characterized in that: The pipe opening and closing component includes a cylinder (9) rotatably mounted on the outer wall of the exhaust pipe (4). The movable end of the cylinder (9) is rotatably connected to a transmission component (12). A movable shaft (13) is symmetrically fixed on the circumferential outer wall of the oil baffle plate (6). The movable shaft (13) is rotatably mounted on the inner wall of the exhaust pipe (4) and extends outward. The side of the transmission component (12) away from the movable end of the cylinder (9) is sleeved on the outer wall of the movable shaft (13).

3. The novel launch-type hydraulic cylinder exhaust device according to claim 1, characterized in that: A filter screen (20) is embedded between the cylindrical plug (7) and the oil blocking plate (6), and the filter screen (20) is located inside the exhaust pipe (4).

4. The novel launch-type hydraulic cylinder exhaust device according to claim 1, characterized in that: The side wall of the fixed frame (1) is fixedly installed with an annular seat (17), and a guide ring (15) is embedded in the inner cavity of the annular seat (17). A non-contact liquid level sensor (23) is sleeved on the outer wall of the guide ring (15).

5. A novel launch-type hydraulic cylinder exhaust device according to claim 4, characterized in that: A fixed post (14) is uniformly arranged circumferentially between the annular seat (17) and the guide ring (15). A sleeve (22) is fixedly installed on the side wall of the non-contact liquid level sensor (23), and a slot (24) is opened on the outer wall of the sleeve (22), and the slot (24) covers the outside of the fixed post (14).

6. The novel launch-type hydraulic cylinder exhaust device according to claim 1, characterized in that: A vent valve (21) is provided on the outer wall of the gas collecting tank (2).

7. A novel launch-type hydraulic cylinder exhaust device according to claim 1, characterized in that: The gas collecting tank (2) has a spherical structure.

8. A novel launch-type hydraulic cylinder exhaust device according to claim 1, characterized in that: The inner wall of the spiral hole (8) is coated with a corrosion-resistant coating.

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