Automatic sealing device

Abstract

The utility model relates to the technical field of sealing, and discloses an automatic sealing device which comprises a piston, a guide sleeve is connected outside the piston in a sliding mode, a pressure spring sleeve is connected outside the piston in a sliding mode, a spring is fixedly connected to the right end of the pressure spring sleeve, and a nut is fixedly connected to the left end of the piston. According to the automatic sealing device, the pressing degree of the piston and the wall face is changed by adjusting the pre-tightening force of the spring through the guide sleeve, the connecting ring, the attaching ring and other structures, so that different automatic sealing effects are achieved, firstly, the pressing degree of the piston and the wall face can be accurately controlled by adjusting the pre-tightening force of the spring, and therefore the different sealing effects are achieved; the accurate control can ensure that the optimal sealing performance can be achieved under different working conditions, no matter in high-temperature, high-pressure or other extreme environments, secondly, the automatic sealing device can automatically adjust the sealing effect, manual intervention is not needed, and the reliability and stability of equipment are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of sealing, in particular to an automatic sealing device. Background Art

[0002] At present, automatic sealing devices are required in many occasions, especially when pneumatic cleaning is used to clear silo blockages. In actual production, due to various reasons, silos are prone to arching, bridging, rat holes, adhesions and other problems, which make it impossible to discharge materials normally. Pneumatic cleaning is a good way to clear blockages. It uses high-pressure gas to spray into the silo to break up the agglomerated materials and make them flow again.

[0003] After the gas enters the silo through the pipeline and completes the cleaning, in order to prevent the material in the silo from entering the pipeline, the pipeline needs to have a timely and tight sealing effect. The existing sealing devices are often complex in structure and difficult to maintain, and the sealing effect decreases after long-term use. An automatic sealing device with a simple structure and good sealing effect is needed. Utility Model Content

[0004] In order to make up for the above shortcomings, the utility model provides an automatic sealing device, aiming to improve the problems of complex structure and difficult maintenance in the prior art.

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

[0006] An automatic sealing device comprises a piston, wherein the outer portion of the piston is slidably connected to a guide sleeve, the outer portion of the piston is slidably connected to a compression spring sleeve, the right end of the compression spring sleeve is fixedly connected to a spring, and the left end of the piston is fixedly connected to a nut;

[0007] As a further description of the above technical solution:

[0008] The outside of the piston is slidably connected to a support body, and the outside of the guide sleeve is slidably connected to the inside of the support body;

[0009] As a further description of the above technical solution:

[0010] The right end of the spring is fixedly connected to the outside of the guide sleeve;

[0011] As a further description of the above technical solution:

[0012] The left end of the guide sleeve is fixedly connected with a connecting ring, and the outer portion of the piston is slidably connected to the inner portion of the connecting ring;

[0013] As a further description of the above technical solution:

[0014] The inner thread of the nut is connected with a locking nut, and the right end of the nut is attached to the left end of the compression spring sleeve;

[0015] As a further description of the above technical solution:

[0016] The outer thread of the nut is connected with a locking nut, and the right end of the nut is attached to the left end of the compression spring sleeve;

[0017] As a further description of the above technical solution:

[0018] The front end of the guide sleeve is threadedly connected with a fitting ring, and the outer portion of the piston is slidably connected to the inner portion of the fitting ring;

[0019] As a further description of the above technical solution:

[0020] The outside of the fitting ring fits inside the support body, and a spring is arranged outside the piston.

[0021] The utility model has the following beneficial effects:

[0022] In the utility model, by means of structures such as a guide sleeve, a connecting ring, and a fitting ring, the degree of compression between the piston and the wall surface is changed by adjusting the preload force of the spring, thereby obtaining different automatic sealing effects. By adjusting the preload force of the spring, the degree of compression between the piston and the wall surface is precisely controlled, thereby achieving different sealing effects. This precise control ensures that the best sealing performance is achieved under different working conditions, whether it is high temperature, high pressure or other extreme environments.

[0023] In the utility model, the piston 1 increases the inclination angle on the basis of the T-shaped structure through the structures of the piston, the support body, etc., and is tightly attached to the inclined surface on the container during installation, thereby also achieving a sealing effect. It ensures consistency and stability under different working conditions. Whether facing changing temperature, pressure or other environmental factors, the system can automatically adjust to maintain an ideal sealing effect, thereby reducing the risk of leakage caused by environmental changes and ensuring the safety of equipment and workplaces. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 A three-dimensional schematic diagram of an automatic sealing device proposed by the utility model;

[0025] Figure 2 This is a structural cross-sectional view of a guide sleeve of an automatic sealing device proposed by the utility model;

[0026] Figure 3 This is a structural cross-sectional view of a support body of an automatic sealing device proposed by the utility model;

[0027] Figure 4 This is a structural schematic diagram of a connecting ring of an automatic sealing device proposed by the utility model;

[0028] Figure 5 This is a structural cross-sectional view of a fitting ring of an automatic sealing device proposed by the utility model.

[0029] Legend:

[0030] 1. Piston; 2. Guide sleeve; 3. Spring; 4. Compression spring sleeve; 5. Locking nut; 6. Nut; 7. Support body; 8. Connecting ring; 9. Fitting ring. DETAILED DESCRIPTION

[0031] 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.

[0032] Reference Figure 1-Figure 3 The utility model provides an embodiment: an automatic sealing device, including a piston 1, a guide sleeve 2 is slidably connected to the outside of the piston 1, a compression spring sleeve 4 is slidably connected to the outside of the piston 1, a spring 3 is fixedly connected to the right end of the compression spring sleeve 4, and is connected to a nut 6 through a threaded structure, so that the spring 3 is pressed between the guide sleeve 2 and the compression spring sleeve 4, thereby completing the limiting between the structures and enhancing the stability.

[0033] Reference Figure 1-Figure 3 The left end of the piston 1 is fixedly connected with a nut 6, the outside of the piston 1 is slidably connected with a support body 7, the outside of the guide sleeve 2 is slidably connected to the inside of the support body 7, and the right end of the spring 3 is fixedly connected to the outside of the guide sleeve 2. By adjusting the preload force of the spring 3, the degree of compression between the piston 1 and the wall of the support body 7 can be changed, thereby obtaining different automatic sealing effects.

[0034] The internal thread of nut 6 is connected with a locking nut 5, and the right end of nut 6 is fitted against the left end of compression spring sleeve 4. The external thread of nut 6 is connected with a locking nut 5, and the right end of nut 6 is fitted against the left end of compression spring sleeve 4, which is convenient for the existence of various forms, so that the threaded connection between locking nut 5 and nut 6 will not affect the stable fixation of piston 1 by nut 6.

[0035] The outside of the fitting ring 9 fits inside the support body 7. A spring 3 is provided outside the piston 1. Gas is introduced into the left end, and the pressure gradually increases. The piston 1 moves to the right under the pressure, and a certain gap is formed between the end face of the piston 1 and the wall. High-pressure gas is ejected from this gap. When the gas ejection is finished, the pressure decreases. Due to the action of the spring 3, the piston 1 rod is quickly pulled back and pressed against the wall again, thereby blocking the entry of external gas or materials and achieving automatic sealing. After the spring 3 pulls back the piston 1, the external materials act on the right end face of the piston 1, which can also play a role in pressing the piston 1. The guide sleeve 2 plays a fixed guiding role to ensure that the piston 1 moves along the guide sleeve 2 without deviation. The piston 1 increases the inclination angle on the basis of the T-shaped structure, and is tightly attached to the inclined surface on the container during installation, which also achieves a sealing effect.

[0036] Reference Figure 4 and Figure 5 The left end of the guide sleeve 2 is fixedly connected with a connecting ring 8, the outside of the piston 1 is slidably connected to the inside of the connecting ring 8, the front end of the guide sleeve 2 is threadedly connected with a fitting ring 9, the outside of the piston 1 is slidably connected to the inside of the fitting ring 9, the guide sleeve 2 plays a fixed guiding role to ensure that the piston 1 moves along the guide sleeve 2 without deviation, the piston 1 increases the inclination angle on the basis of the T-shaped structure, and is tightly attached to the inclined surface on the container during installation, thereby also achieving a sealing effect.

[0037] Working principle: gas is introduced into the left end, and the pressure gradually increases. The piston 1 moves to the right under the pressure, and a certain gap is formed between the end face of the piston 1 and the wall, and the high-pressure gas is ejected from this gap. When the gas is ejected, the pressure decreases. Due to the action of the spring 3, the degree of compression between the piston 1 and the wall of the support body 7 is changed by adjusting the preload force of the spring 3, so as to obtain different automatic sealing effects. The piston 1 rod is quickly pulled back and pressed against the wall again, thereby blocking the entry of external gas or materials and realizing automatic sealing. After the spring 3 pulls back the piston 1, the external materials act on the right end face of the piston 1, which can also play the role of compressing the piston 1. The guide sleeve 2 plays a fixed guiding role to ensure that the piston 1 moves along the guide sleeve 2 without deviation. The piston 1 has an increased inclination angle on the basis of the T-shaped structure. When installed, it is close to the inclined surface on the container, which also achieves a sealing effect.

[0038] 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. An automatic sealing device, comprising a piston (1), characterized in that: The outside of the piston (1) is slidably connected to a guide sleeve (2), the outside of the piston (1) is slidably connected to a compression spring sleeve (4), the right end of the compression spring sleeve (4) is fixedly connected to a spring (3), and the left end of the piston (1) is fixedly connected to a nut (6).

2. An automatic sealing device according to claim 1, characterized in that: The outside of the piston (1) is slidably connected to a support body (7), and the outside of the guide sleeve (2) is slidably connected to the inside of the support body (7).

3. An automatic sealing device according to claim 1, characterized in that: The right end of the spring (3) is fixedly connected to the outside of the guide sleeve (2).

4. The automatic sealing device according to claim 1, characterized in that: The left end of the guide sleeve (2) is fixedly connected to a connecting ring (8), and the outside of the piston (1) is slidably connected to the inside of the connecting ring (8).

5. An automatic sealing device according to claim 4, characterized in that: The inner thread of the nut (6) is connected to a locking nut (5), and the right end of the nut (6) is fitted on the left end of the compression spring sleeve (4).

6. An automatic sealing device according to claim 4, characterized in that: The outer thread of the nut (6) is connected to a locking nut (5), and the right end of the nut (6) is fitted on the left end of the compression spring sleeve (4).

7. An automatic sealing device according to claim 2, characterized in that: The front end of the guide sleeve (2) is threadedly connected to a fitting ring (9), and the outside of the piston (1) is slidably connected to the inside of the fitting ring (9).

8. An automatic sealing device according to claim 7, characterized in that: The outside of the fitting ring (9) fits into the inside of the support body (7), and a spring (3) is provided on the outside of the piston (1).

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