Quick release device for maintenance free air packs

Abstract

The utility model discloses a mud pump technical field's quick dismounting device of maintenance -free air pack for the buffer inner bag of dismounting air pack, include: support, be equipped with telescopic link on the lateral wall of support, the movable end of telescopic link is hinged with pull -out block, be equipped with flexible connecting piece and pneumatic assembly on the support, this application drives telescopic link axial movement through pneumatic assembly, drives pull -out block to pass through the damping hole on the lateral wall of buffer inner bag and to adhere with the lateral wall of inner bag, again through the reverse traction telescopic link of pulling flexible connecting piece, make it contract under the action of restoring force to drive pull -out block to the device central axis direction movement, exert radial to the buffer inner bag inwards extrusion pressure, force inner bag partial or whole to produce controllable radial contraction deformation, replace traditional manual force compression mode, reduce labor intensity greatly, can complete the radial contraction of inner bag through the traction of flexible connecting piece, simple operation, single person can complete dismounting operation, and maintenance efficiency is improved significantly.

Description

Technical Field

[0001] This utility model relates to the field of mud pumps, specifically to a quick-release device for a maintenance-free air pack. Background Technology

[0002] Mud pumps are widely used in oil drilling, mining, tunnel construction and other fields. During operation, they generate strong pressure pulsations, which seriously affect the service life of the pump body, pipelines and valves. To address this, an air chamber is usually installed at the outlet of the mud pump. The air chamber uses its internal buffer liner (also known as an air bladder) to store and release energy, effectively absorb pressure fluctuations, stabilize the discharge volume and ensure the smooth operation of the system.

[0003] As a consumable part, the buffer liner needs to be inspected or replaced regularly. However, the buffer liner is usually made of highly elastic rubber material (such as nitrile rubber, hydrogenated nitrile rubber, etc.), which has the characteristics of large volume, strong elasticity and high recovery force. In actual operation, operators often have to rely on manual force to compress the liner body. This makes it difficult to effectively compress and maintain the compressed state, which easily causes rebound, affects work efficiency and poses certain hidden dangers. Utility Model Content

[0004] The purpose of this invention is to provide a quick disassembly and assembly device for maintenance-free air bags, which solves the problems existing in the current disassembly and assembly methods.

[0005] This utility model achieves the above objectives through the following technical solution: a quick disassembly and assembly device for a maintenance-free air bag, used for disassembling and assembling the buffer liner of the air bag, comprising: a support rod, a telescopic rod provided on the side wall of the support rod, and a pull block hinged to the moving end of the telescopic rod; The support rod is equipped with a flexible connector and a pneumatic assembly. The pneumatic assembly is used to drive the telescopic rod to extend so that the pull block passes through the damping hole on the side wall of the buffer liner. The flexible connector is used to drive the telescopic rod to shorten so that the pull block is pressed against the outer wall of the buffer liner and squeezes it to produce radial contraction.

[0006] Preferably, there are four sets of telescopic rods, which are arranged in a ring on the side wall of the support rod.

[0007] Preferably, the telescopic rod includes a kit, a movable rod slidably inserted into the kit, and an elastic element disposed between the kit and the movable rod.

[0008] Preferably, the telescopic rod is provided with at least two pull blocks, which are hinged to the side wall of the movable rod away from the kit via a torsion spring pivot. The movable rod has two slots located on both sides of the rotation direction of the pull block. A limiting block and a tension spring connected to the limiting block are slidably installed in the slot. The movable rod has an airflow channel for connecting the slot with the kit.

[0009] Preferably, the kit includes a baffle for blocking the airflow channel inlet and a spring connected to the baffle, the baffle moving in the same direction as the movable rod.

[0010] Preferably, the end of the support rod is provided with a pressure block and a screw for driving the pressure block away from the support rod.

[0011] Preferably, the quick disassembly and assembly device further includes a bracket, the support rod is slidably mounted on the bracket, and the bracket is provided with a pressing element for pressing down on the housing of the air bag.

[0012] Preferably, the bracket is provided with a driving element for driving the support rod to move on the bracket.

[0013] The beneficial effects of this utility model are as follows: the pneumatic component drives the telescopic rod to move axially, causing the pull block to pass through the damping hole on the side wall of the buffer liner and fit against the outer side wall of the liner. Then, by pulling the flexible connector, the telescopic rod is pulled in the opposite direction, causing it to contract under the action of restoring force. This drives the pull block to move towards the central axis of the device, applying radial inward compressive force to the buffer liner, forcing the liner to produce controllable radial contraction deformation locally or as a whole. This replaces the traditional manual force compression method, greatly reducing labor intensity. The radial contraction of the liner can be completed by the traction of the flexible connector. The operation is simple, and a single person can complete the disassembly and assembly work, significantly improving maintenance efficiency. The linkage mechanism between the pull block and the telescopic rod can stably transmit the force, avoiding safety risks such as pinching and collision caused by the sudden rebound of the liner during manual compression, thus improving the safety of on-site operations. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the quick assembly / disassembly device of this utility model; Figure 2 This is a schematic diagram of the connection structure between the telescopic rod and the pull block of this utility model; Figure 3 This is a cross-sectional view of the connection between the telescopic rod and the support rod of this utility model; Figure 4 This utility model Figure 3 Enlarged schematic diagram of the structure at point B; Figure 5 This utility model Figure 3 Enlarged schematic diagram of the structure at point A in the middle.

[0015] In the diagram: 1. Support rod; 2. Telescopic rod; 201. Kit; 202. Movable rod; 203. Elastic element; 3. Pull block; 4. Pressure block; 5. Screw; 6. Bracket; 7. Pressing element; 8. Driving element; 9. Limiting block; 10. Flexible connector; 11. Conduit; 12. Tension spring; 13. Airflow channel; 14. Baffle; 15. Spring element. Detailed Implementation

[0016] The present application will now be described in further detail with reference to the accompanying drawings. It should be noted that the following specific embodiments are only used to further illustrate the present application and should not be construed as limiting the scope of protection of the present application. Those skilled in the art can make some non-essential improvements and adjustments to the present application based on the above application content.

[0017] Example 1 Please see Figure 1 and Figure 3 The maintenance-free air bag quick-release device includes: a support rod 1, a telescopic rod 2 on the outer side wall of the support rod 1; a pull block 3 is hinged to the moving end of the telescopic rod 2; the support rod 1 is provided with a flexible connector 10 (such as a steel wire rope, but not limited to a steel wire rope) and a pneumatic component. One end of the flexible connector 10 is connected to the moving end of the telescopic rod 2, and the other end can be wound around the output shaft of the motor. By using the operation of the motor, the flexible connector 10 is wound around its own output shaft to pull the moving end of the telescopic rod 2 to move. The operation of the motor saves manpower. The pneumatic component includes an air pump and a conduit 11 connected to the air pump. The conduit 11 is connected to the telescopic rod 2. The air pump injects air into the telescopic rod 2 through the conduit 11 to increase its internal air pressure, thereby driving the telescopic rod 2 to extend.

[0018] It should be noted that the specific disassembly and assembly method is as follows: Insert the support rod 1 into the inner cavity of the buffer liner, rotate the support rod 1 so that the end of the telescopic rod 2 is aligned with the damping hole on the side wall of the buffer liner; the pneumatic component drives the telescopic rod 2 to extend, so that the pull block 3 passes through the damping hole on the side wall of the buffer liner, and then pull the flexible connector 10 to drive the telescopic rod 2 to shorten, so that the pull block 3 fits against the outer side wall of the buffer liner and squeezes the buffer liner in the direction of the support rod 1, so that it contracts radially and reduces the diameter of the buffer liner. Then move the support rod 1 to insert the buffer liner into the shell of the air bag or remove the buffer liner from the shell of the air bag.

[0019] In this implementation, as a further optimization option, please refer to [link / reference]. Figure 3 The telescopic rod 2 includes a kit 201, a movable rod 202 that slides into the inner cavity of the kit 201, and an elastic element 203 (spring) disposed between the kit 201 and the movable rod 202. The elastic element 203 provides a pulling force to the movable rod 202 so that it will not move easily. The movable rod 202 and the kit 201 are sealed to prevent air leakage. The inner cavity of the kit 201 is connected to the conduit 11. One end of the flexible connector 10 passes through the inner cavity of the extension kit 201 and is connected to the movable rod 202.

[0020] In this embodiment, as a further optimization, please refer to... Figure 1There are four sets of telescopic rods 2, which are evenly distributed in a ring on the outer side wall of the support rod 1. This makes the force applied by the pull block 3 to the buffer liner more uniform, ensuring that the buffer liner contracts evenly towards the center. By applying uniform radial pressure to the liner through multiple points or evenly distributed circumferentially, the excessive local compression or wrinkling deformation is avoided, effectively preventing mechanical damage to weak areas such as the neck and transition rounded corners of the liner, and ensuring its structural integrity and sealing performance.

[0021] In this embodiment, as a further optimization, please refer to... Figure 2 , Figure 3 and Figure 4 The telescopic rod 2 is provided with at least two pull blocks 3; in this application, two pull blocks 3 are used as an example. The two pull blocks 3 are respectively hinged to the upper and lower side walls of the end of the movable rod 202 away from the kit 201 by a torsion spring shaft. The torsion spring shaft provides a supporting force to the pull blocks 3, so that they are in a vertical state when no force is applied, and the torsion spring shaft can also make the pull blocks 3 return to their original position after rotation. Two slots are opened on the movable rod 202 (one pull block 3 is equipped with two slots). The two slots are respectively located on both sides of the rotation direction of the pull block 3. A limit stop 9 is slidably provided in the inner cavity of the slot. The slot and the limit stop 9 are... A tension spring 12 is provided (the tension spring 12 provides tension to the limiting block 9, so that the limiting block 9 is housed in the inner cavity of the slot). An airflow channel 13 is provided on the movable rod 202, through which the slot is connected to the kit 201. When the pneumatic component injects air into the kit 201 of the telescopic rod 2, some of the gas enters the inner cavity of the slot through the airflow channel 13, increasing the air pressure inside the slot. This is used to push the limiting block 9 to move outward from the slot, so that the limiting block 9 contacts the pull block 3, restricting the pull block 3 and ensuring that the pull block 3 will not rotate automatically when applying pressure to the buffer liner.

[0022] In this embodiment, as a further optimization, please refer to... Figure 3 , Figure 4 and Figure 5A baffle 14 is slidably installed in the inner cavity of the kit 201. A spring 15 is provided between the baffle 14 and the kit 201. The moving direction of the baffle 14 is the same as the moving direction of the movable rod 202. The baffle 14 blocks the inlet of the airflow channel 13. When the air pressure inside the kit 201 increases and pushes the movable rod 202 to move outward, the baffle 14 moves along with the movable rod 202 under the push of the spring 15, so that the baffle 14 continues to block the inlet of the airflow channel 13. At this time, the gas inside the kit 201 will not enter the slotted inner cavity. (That is, the limit stop 9 does not move at this time). As the movable rod 202 continues to move, and the baffle 14 stops moving after reaching its maximum stroke, a gap is created between the movable rod 202 and the baffle 14. The inlet of the airflow channel 13 opens, allowing the gas inside the kit 201 to enter the slot through the airflow channel 13 (at this time, the pull block 3 has passed through the damping hole of the buffer liner). This ensures that the limit stop 9 will not move out of the slot to restrict the pull block 3 during the extension process of the telescopic rod 2, and avoids the pull block 3 from being unable to rotate and thus unable to pass through the damping hole.

[0023] Example 2 As a further optimization of Example 1, please refer to Figure 1 and Figure 3 The end of the support rod 1 is provided with a screw hole, and a screw rod 5 is screwed into the screw hole. The end of the screw rod 5 is provided with a pressure block 4. When one end of the support rod 1 is inserted into the inner cavity of the buffer liner, the pressure block 4 contacts the buffer block inside the buffer liner. Rotating the screw rod 5 drives the pressure block 4 away from the support rod 1, applying an axial force to the buffer liner, increasing the extent of the buffer liner's contraction towards the center, further reducing the diameter of the buffer liner, facilitating its entry and exit from the air bag housing, and making it easy to quickly assemble and disassemble the air bag.

[0024] Example 3 As a further optimization of Example 1, please refer to Figure 1 The quick disassembly and assembly device also includes a bracket 6. The top wall of the bracket 6 has a guide hole, and the support rod 1 is inserted through the guide hole. The bracket 6 is equipped with a pressing component 7, which includes a hydraulic cylinder and a pressure plate on the moving end of the hydraulic cylinder. When the bracket 6 is placed on the ground, the housing of the air bag is located inside the bracket 6. The hydraulic cylinder moves down with the pressure plate to contact the housing of the air bag and press it down, which has a positioning effect. This prevents the housing from moving automatically during the disassembly and assembly process and does not require the assistance of staff. This allows a single person to complete the disassembly and assembly work, significantly improving maintenance efficiency.

[0025] In this embodiment, as a further optimization, please refer to... Figure 1The support 6 is equipped with a drive component 8 (such as a hydraulic cylinder), one end of which is connected to the support rod 1. The drive component 8 extends and retracts during operation to drive the support rod 1 to move on the support 6, thereby replacing manual application of force to the support rod 1 and reducing the workload of the workers.

[0026] The embodiments described above are merely examples of several implementations of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these modifications and improvements all fall within the protection scope of this utility model.

Claims

1. A quick-release device for a maintenance-free air bag, used for disassembling and assembling the buffer liner of the air bag, characterized in that, include: Support rod (1), a telescopic rod (2) is provided on the side wall of the support rod (1), and a pull block (3) is hinged to the moving end of the telescopic rod (2). The support rod (1) is provided with a flexible connector (10) and a pneumatic assembly. The pneumatic assembly is used to drive the telescopic rod (2) to extend so that the pull block (3) passes through the damping hole on the side wall of the buffer liner. The flexible connector (10) is used to drive the telescopic rod (2) to shorten so that the pull block (3) is attached to the outer wall of the buffer liner and squeezed to produce radial contraction.

2. The quick-assembly and disassembly device for the maintenance-free air bag according to claim 1, characterized in that, There are four sets of telescopic rods (2), and the four sets of telescopic rods (2) are distributed in a ring on the side wall of the support rod (1).

3. The quick-assembly and disassembly device for the maintenance-free air bag according to claim 1, characterized in that, The telescopic rod (2) includes a kit (201), a movable rod (202) that slides inside the kit (201), and an elastic element (203) located between the kit (201) and the movable rod (202).

4. The quick-assembly and disassembly device for the maintenance-free air bag according to claim 3, characterized in that, At least two pull blocks (3) are provided on the telescopic rod (2), and the pull blocks (3) are hinged to the side wall of the movable rod (202) away from the kit (201) by a torsion spring pivot. The movable rod (202) is provided with two slots located on both sides of the rotation direction of the pull block (3). A limit block (9) and a tension spring (12) connected to the limit block (9) are slidably provided in the slot. The movable rod (202) is provided with an airflow channel (13) for connecting the slot with the kit (201).

5. The quick-assembly and disassembly device for the maintenance-free air bag according to claim 4, characterized in that, The kit (201) is slidably provided with a baffle (14) for blocking the inlet of the airflow channel (13) and a spring (15) connected to the baffle (14). The moving direction of the baffle (14) is the same as the moving direction of the movable rod (202).

6. The quick-assembly and disassembly device for the maintenance-free air bag according to claim 1, characterized in that, The end of the support rod (1) is provided with a pressure block (4) and a screw (5) for driving the pressure block (4) away from the support rod (1).

7. The quick-assembly and disassembly device for the maintenance-free air bag according to claim 1, characterized in that, The quick assembly / disassembly device also includes a bracket (6), the support rod (1) is slidably mounted on the bracket (6), and the bracket (6) is provided with a pressing member (7), which is used to press down the housing of the air bag.

8. The quick-assembly and disassembly device for the maintenance-free air bag according to claim 7, characterized in that, The bracket (6) is provided with a drive element (8) for driving the support rod (1) to move on the bracket (6).

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