Floating piston convenient to replace

Abstract

The utility model relates to the technical field of floating pistons, and discloses a floating piston convenient to replace, which comprises a sliding sleeve, the inner wall of the sliding sleeve is connected with a sleeve in a sliding manner, the inner wall of the sleeve is connected with a piston sleeve in a sliding manner, the interior of the piston sleeve is rotatably connected with an adjusting part, and the outer wall of the adjusting part is fixedly connected with a rotating disc. A sliding groove is formed in the rotating disc, a fixing rod is slidably connected to the interior of the rotating disc, a sliding rod is fixedly connected to the outer wall of the fixing rod, a limiting assembly is arranged on the outer wall of the sliding rod, and a supporting block is fixedly connected to the interior of the sliding rod. According to the utility model, the adjusting piece is rotated to enable the rotating disc to rotate, at the moment, the sliding groove formed in the rotating disc forces the fixing rod to slide, the fixing rod drives the supporting block to expand outwards when sliding in the direction of the sliding groove, so that the supporting block expands the piston sleeve outwards until the piston sleeve is tightly attached to the inner wall of the pipeline, and therefore, the problem that the size of the piston cannot be adjusted is solved; and the effect that the practicability of the piston is better is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of floating pistons, in particular to a floating piston which is easy to replace. Background Art

[0002] The floating piston is a component that works in a liquid medium and has good sealing performance and stable performance. In different industries and fields, such as petroleum, chemical industry, automobile, refrigeration, etc., the application of floating pistons is becoming more and more extensive. However, in actual use, the replacement of floating pistons has become a problem that needs to be solved. In order to facilitate replacement, related technologies have been continuously improved and developed. Floating pistons are usually located inside compact equipment. When replacing, a large number of accessories need to be disassembled, which is time-consuming and laborious. Therefore, it is of great significance to propose a floating piston that is easy to replace.

[0003] After searching, the publication number CN213655299U discloses a floating piston that is easy to replace, which solves the problem that when the piston is taken out in the prior art, the liquid in the oil cylinder is easily taken out with the piston, which not only causes a waste of resources, but also makes the replacement of the piston more time-consuming and labor-intensive. A floating piston that is easy to replace includes a piston body, the piston body includes an oil cylinder and a piston rod, and both sides of the outer wall of the oil cylinder are fixedly connected with a U-shaped plate, and both sides of the inner side of the U-shaped plate are provided with a limit plate. The utility model proposes to use a cover plate and other components to isolate the liquid in the oil cylinder when the piston and the piston rod are taken out, so as to prevent the liquid in the oil cylinder from leaking out, which not only prevents the waste of resources, but also saves time and effort when replacing the floating piston. Although the application achieves the effect of preventing liquid leakage by driving the cover plate through the piston rod and the electric telescopic rod, it does not mention how to solve the problem that the piston size cannot be changed. There is a problem that different pistons need to be selected for oil cylinders of different sizes, which is cumbersome and inconvenient to replace. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides a floating piston that is easy to replace, which improves the problem that the piston size cannot be changed. There is a problem that different pistons need to be selected for oil cylinders of different sizes, which is cumbersome and inconvenient to replace.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a floating piston that is easy to replace, comprising a sliding sleeve, the inner wall of the sliding sleeve is slidably connected to a sleeve, the inner wall of the sleeve is slidably connected to a piston sleeve, the interior of the piston sleeve is rotatably connected to an adjusting member, the outer wall of the adjusting member is fixedly connected to a rotating disk, a sliding groove is provided inside the rotating disk, the interior of the rotating disk is slidably connected to a fixed rod, the outer wall of the fixed rod is slidably connected to the inner wall of the sliding groove, the outer wall of the fixed rod is fixedly connected to a sliding rod, the outer wall of the sliding rod is provided with a limiting assembly, and the interior of the sliding rod is fixedly connected to a support block.

[0006] Furthermore, the limiting assembly comprises a limiting rod, an outer wall of the limiting rod is fixedly connected to an outer wall of the rotating disk, and an outer wall of the sliding rod is slidably connected to the inside of the rotating disk.

[0007] Furthermore, the outer wall of the sleeve is fixedly connected to a limit plate, and the outer wall of the sleeve is sleeved with a spring.

[0008] Furthermore, one end of the spring is fixedly connected to the outer wall of the limiting plate, and the other end of the spring is fixedly connected to the inner wall of the sliding sleeve.

[0009] Furthermore, a baffle is fixedly connected to the outer wall of the sleeve, and the outer wall of the baffle is slidably connected to the inside of the sliding sleeve.

[0010] Furthermore, a ball is arranged inside the sleeve, and the outer wall of the ball is slidably connected to the inside of the sliding sleeve.

[0011] Furthermore, a groove is provided inside the sleeve, and the outer wall of the ball is slidably connected to the inner wall of the groove.

[0012] Furthermore, the inner wall of the sleeve is slidably connected to a plug-in tube, and the outer wall of the plug-in tube is fixedly connected to a sealing ring.

[0013] The utility model has the following beneficial effects:

[0014] In the utility model, the rotating disk is rotated by rotating the adjusting member. At this time, the slide groove provided on the rotating disk forces the fixed rod to slide along the slide groove direction. When the fixed rod slides along the slide groove direction, it drives the support block to expand outward, so that the support block expands the piston sleeve outward until it fits tightly against the inner wall of the pipe, thereby solving the problem that the piston cannot be adjusted in size and achieving the effect of making the piston more practical.

[0015] In the utility model, by pulling the sliding sleeve on the sleeve, the sliding sleeve compression spring slides toward the limit plate. At this time, the other end of the sliding sleeve leaves the top of the slot, thereby releasing the obstruction to the ball. When the plug-in tube is inserted, the sealing ring at the front end of the plug-in tube will roll up and make the ball fall into the gap between the two sealing rings for engagement. At this time, the sliding sleeve is released and the spring drives the sliding sleeve to reset, thereby achieving the effect of facilitating the installation of the sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a three-dimensional structural diagram of a floating piston that is easy to replace proposed by the utility model;

[0017] Figure 2 A cross-sectional view of a sliding sleeve of a floating piston that is easy to replace proposed by the utility model;

[0018] Figure 3 The utility model discloses a cross-sectional view of a piston sleeve of a floating piston which is easy to replace.

[0019] Legend:

[0020] 1. Sliding sleeve; 2. Sleeve; 3. Piston sleeve; 4. Adjusting part; 5. Rotating plate; 6. Sliding groove; 7. Fixed rod; 8. Sliding rod; 9. Limiting rod; 10. Support block; 11. Limiting plate; 12. Spring; 13. Baffle; 14. Ball; 15. Sealing ring; 16. Plug-in tube; 17. Slot. 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] Reference Figure 1 and Figure 3 The utility model provides an embodiment: a floating piston that is easy to replace, including a sliding sleeve 1, the inner wall of the sliding sleeve 1 is slidably connected with a sleeve 2, the inner wall of the sleeve 2 is slidably connected with a piston sleeve 3, the interior of the piston sleeve 3 is rotatably connected with an adjusting member 4, the outer wall of the adjusting member 4 is fixedly connected with a rotating disk 5, a sliding groove 6 is provided inside the rotating disk 5, a fixing rod 7 is slidably connected inside the rotating disk 5, the outer wall of the fixing rod 7 is slidably connected to the inner wall of the sliding groove 6, the outer wall of the fixing rod 7 is fixedly connected to a sliding rod 8, a limiting assembly is provided on the outer wall of the sliding rod 8, and a supporting block 10 is fixedly connected to the interior of the sliding rod 8; the limiting assembly includes a limiting rod 9, the outer wall of the limiting rod 9 is fixedly connected to the outer wall of the rotating disk 5, and the outer wall of the sliding rod 8 is slidably connected to the interior of the rotating disk 5.

[0023] Specifically, the piston sleeve 3 is made of a flexible material, so that the piston sleeve 3 has a certain ductility. Therefore, when the support block 10 slides on the slide rod 8, the piston sleeve 3 can be stretched to fit tightly with the sleeve 2 to achieve a sealing effect. The limit rod 9 restricts the slide rod 8 so that the slide rod 8 can only slide along a predetermined trajectory, that is, it drives the support block 10 to expand outward in a circular shape, so that the piston sleeve 3 is evenly stressed.

[0024] Reference Figure 2 The outer wall of the sleeve 2 is fixedly connected to the limit plate 11, and the outer wall of the sleeve 2 is sleeved with a spring 12; one end of the spring 12 is fixedly connected to the outer wall of the limit plate 11, and the other end of the spring 12 is fixedly connected to the inner wall of the sliding sleeve 1; the outer wall of the sleeve 2 is fixedly connected to the baffle 13, and the outer wall of the baffle 13 is slidably connected to the inside of the sliding sleeve 1.

[0025] Specifically, the sleeve 1 is limited by the limit plate 11 and the baffle 13, so that the sleeve 1 will not exceed the predetermined distance and disengage from the sleeve 2 when sliding. The spring 12 can drive the sleeve 1 to reset after the plug-in tube 16 is inserted, so that the sleeve 1 blocks the groove 17 and limits the ball 14, and then the plug-in tube 16 is engaged by the ball 14 to complete the plug-in.

[0026] Reference Figure 1 and Figure 2 A ball 14 is arranged inside the sleeve 2, and the outer wall of the ball 14 is slidably connected to the inside of the sleeve 1; a groove 17 is opened inside the sleeve 2, and the outer wall of the ball 14 is slidably connected to the inner wall of the groove 17; a plug-in tube 16 is slidably connected to the inner wall of the sleeve 2, and a sealing ring 15 is fixedly connected to the outer wall of the plug-in tube 16.

[0027] Specifically, the groove 17 is opened through one end of the sleeve 2, and the upper and lower openings of the groove 17 are smaller than the diameter of the ball 14, while the middle position is larger than the diameter of the ball 14, so that the ball 14 can slide inside the groove 17 without falling off, and when the sleeve 1 is reset, the upper end opening of the groove 17 can be blocked, so that the lower end of the ball 14 protrudes from the lower end of the groove 17 and is engaged in the gap between the two sealing rings 15, and a sealing gasket should also be provided on the outer wall of the baffle 13 to prevent problems such as liquid leakage and oil leakage.

[0028] Working principle: when it is necessary to use a floating piston that is easy to replace, first rotate the adjusting member 4 so that the adjusting member 4 drives the rotating disk 5 to rotate. At this time, the sliding groove 6 on the rotating disk 5 forces the fixing rod 7 to slide in the direction of rotation, so that the fixing rod 7 drives the sliding rod 8 to slide outward, so that the sliding rod 8 drives the supporting block 10 to open the piston sleeve 3 until the piston sleeve 3 is tightly fitted against the inner wall of the sleeve 2, and the limiting rod 9 limits the sliding rod 8. At this time, the sliding sleeve 1 is pulled toward the limiting plate 11, and the sliding sleeve 1 compresses the spring 12 to slide toward the limiting plate 11. At this time, the other end of the sliding sleeve 1 is separated from the groove 17, and the plug-in tube 16 is inserted into the sleeve 2. At this time, the sealing ring 15 at the front end lifts the ball 14, and the ball 14 slides along the slot 17 until the ball 14 falls between the two sealing rings 15. At this time, the sliding sleeve 1 is released, and the spring 12 drives the sliding sleeve 1 to reset and limit the ball 14, so that the ball 14 engages with the plug-in tube 16.

[0029] Finally, it should be noted that the above is only a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A floating piston that is easy to replace, comprising a sliding sleeve (1), characterized in that: The inner wall of the sliding sleeve (1) is slidably connected to a sleeve (2), the inner wall of the sleeve (2) is slidably connected to a piston sleeve (3), the interior of the piston sleeve (3) is rotatably connected to an adjusting member (4), the outer wall of the adjusting member (4) is fixedly connected to a rotating disk (5), a sliding groove (6) is provided inside the rotating disk (5), the interior of the rotating disk (5) is slidably connected to a fixing rod (7), the outer wall of the fixing rod (7) is slidably connected to the inner wall of the sliding groove (6), the outer wall of the fixing rod (7) is fixedly connected to a sliding rod (8), the outer wall of the sliding rod (8) is provided with a limiting component, and the interior of the sliding rod (8) is fixedly connected to a supporting block (10).

2. The easily replaceable floating piston according to claim 1, characterized in that: The limiting assembly comprises a limiting rod (9), the outer wall of the limiting rod (9) being fixedly connected to the outer wall of the rotating disk (5), and the outer wall of the sliding rod (8) being slidably connected to the inside of the rotating disk (5).

3. The easily replaceable floating piston according to claim 1, characterized in that: The outer wall of the sleeve (2) is fixedly connected to a limit plate (11), and the outer wall of the sleeve (2) is sleeved with a spring (12).

4. The easily replaceable floating piston according to claim 3, characterized in that: One end of the spring (12) is fixedly connected to the outer wall of the limiting plate (11), and the other end of the spring (12) is fixedly connected to the inner wall of the sliding sleeve (1).

5. The easily replaceable floating piston according to claim 4, characterized in that: The outer wall of the sleeve (2) is fixedly connected to a baffle (13), and the outer wall of the baffle (13) is slidably connected to the interior of the sliding sleeve (1).

6. The easily replaceable floating piston according to claim 5, characterized in that: A ball (14) is arranged inside the sleeve (2), and the outer wall of the ball (14) is slidably connected to the inside of the sliding sleeve (1).

7. The easily replaceable floating piston according to claim 6, characterized in that: A slot (17) is provided inside the sleeve (2), and the outer wall of the ball (14) is slidably connected to the inner wall of the slot (17).

8. The easily replaceable floating piston according to claim 1, characterized in that: The inner wall of the sleeve (2) is slidably connected to a plug-in tube (16), and the outer wall of the plug-in tube (16) is fixedly connected to a sealing ring (15).

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