A pneumatic retracting head

Abstract

The utility model provides a kind of pneumatic telescopic head, it is related to material conveying technical field.The utility model includes fixed support and movable support, telescopic pipe is located between movable support and fixed support, drive assembly is located between fixed support and movable support, wherein, the telescopic pipe includes the outer tube being located at the top of fixed support and the inner tube being located at the bottom of movable support, the inner tube is coaxially slidingly connected with outer tube, the drive assembly includes at least three cylinders connected between movable support and fixed support, the cylinder is parallel to telescopic pipe setting.The utility model is fixed by multiple cylinders and cylinder end, so that end surface keeps steady telescoping to be in stable contact with connecting surface.

Description

Technical Field

[0001] This utility model relates to the field of material conveying technology, specifically to a pneumatic telescopic head. Background Technology

[0002] Currently, in carbon batching systems, pneumatic telescopic heads serve as material conveying channels. The pneumatic telescopic head is similar to a telescopic pipe, and its extension can connect two channels.

[0003] In the existing technology, the pneumatic telescopic head relies on a cylinder to control its extension and retraction, and the two ends of the cylinder are hinged. This makes it easy for the end of the telescopic head to tilt or deviate during the extension and retraction process, resulting in gaps when it comes into contact with the connecting surface on the side of the channel, which can easily lead to leakage during material conveying. Utility Model Content

[0004] The purpose of this invention is to develop a pneumatic telescopic head that uses multiple cylinders with fixed cylinder ends to keep the end face stable in its extension and retraction so as to make stable contact with the connecting surface.

[0005] This utility model is achieved through the following technical solution:

[0006] A pneumatic telescopic head, comprising:

[0007] Fixed supports and movable supports;

[0008] The expansion joint is located between the movable support and the fixed support;

[0009] The drive assembly is located between the fixed support and the moving support;

[0010] The telescopic tube includes an outer cylinder located at the top of the fixed support and an inner cylinder located at the bottom of the movable support. The inner cylinder and the outer cylinder are slidably connected coaxially. The drive assembly includes at least three cylinders connected between the movable support and the fixed support. The cylinders are arranged parallel to the telescopic tube.

[0011] Optionally, both the fixed support and the movable support are plate-shaped structures and parallel to each other, and the fixed support and the movable support are respectively provided with through holes communicating with the outer cylinder and the inner cylinder.

[0012] Optionally, a cloth bag is provided between the fixed support and the movable support, and the cloth bag is cylindrical and wrapped around the outside of the telescopic tube.

[0013] Optionally, the cylinders are arranged in a circular trajectory with the telescopic tube at the same center, and the cylinders are arranged at equal intervals on their circular trajectory.

[0014] Optionally, a sliding sealing assembly is provided between the inner cylinder and the outer cylinder.

[0015] Optionally, the sliding sealing assembly includes a first sliding sealing ring disposed on the outer wall of the inner cylinder, the first sliding sealing ring being slidably sealed with the inner wall of the outer cylinder, and a second sliding sealing ring being disposed on the inner edge of the top end of the outer cylinder being slidably sealed with the outer wall of the inner cylinder.

[0016] Optionally, the sliding sealing assembly includes two scraper rings disposed on the outer edge of the bottom end of the inner cylinder. The outer edges of the two scraper rings are wedge-shaped. There is a gap between the outer edge of the lower scraper ring and the inner wall of the outer cylinder, and the outer edge of the upper scraper ring is in sliding contact with the inner wall of the outer cylinder.

[0017] Optionally, a sealing gasket is provided on the top surface of the movable support.

[0018] Optionally, the top surface of the movable support at the lower part of the sealing gasket is provided with a pressure-contact switch that cooperates with the cylinder.

[0019] Optionally, the top surface of the movable support at the lower part of the sealing gasket is provided with at least three pressure switches, and the multiple pressure switches are arranged at equal intervals in a circular trajectory with the same center as the telescopic tube.

[0020] The beneficial effects of this utility model are:

[0021] This invention features three cylinders fixedly connected between a fixed support and a movable support, enabling synchronous extension and retraction to keep the fixed and movable supports sliding in a parallel state. This ensures uniform contact between the movable support and the connecting surface, preventing displacement of the movable support during movement that could lead to unstable contact or gaps. Material leakage is prevented, ensuring stable material transport. Two scraper rings provide graded scraping, removing thicker, larger-particle-size materials first, followed by thinner, smaller-particle-size materials. This avoids excessive workload on a single scraper ring, preventing severe wear between the scraper ring and the outer cylinder. The sealing gasket not only enhances the seal between the movable support and the connecting surface but also allows multiple pressure switches to act as limiters on the movable support's movement, automatically stopping the extension of the telescopic head after contact with the connecting surface. Furthermore, monitoring the time difference of multiple pressure switches triggers detects whether the movable support is tilted in contact with the connecting surface, thus ensuring uniform and stable contact between the movable support and the connecting surface. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a structural diagram of Example 1;

[0024] Figure 2 for Figure 1 Enlarged view of point A in the middle;

[0025] Figure 3 This is a structural diagram of Example 2.

[0026] Reference numerals in the attached drawings: 1. Fixed support; 2. Moving support; 3. Cylinder; 4. Outer cylinder; 5. Inner cylinder; 6. Scraper ring; 7. First sliding sealing ring; 8. Second sliding sealing ring; 9. Cloth bag; 10. Sealing gasket; 11. Pressure switch. Detailed Implementation

[0027] In the following description, only certain exemplary embodiments are briefly described. As those skilled in the art will recognize, the described embodiments can be modified in various ways without departing from the spirit or scope of the invention. Therefore, the drawings and description are considered to be exemplary in nature and not restrictive.

[0028] In this invention, unless otherwise expressly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] The following disclosure provides many different embodiments or examples for implementing various structures of the present invention. To simplify the disclosure, specific examples of components and arrangements are described below. Of course, these are merely examples and are not intended to limit the scope of the invention. Furthermore, reference numerals and / or letters may be repeated in different examples; such repetition is for simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or arrangements discussed. In addition, the present invention provides examples of various specific processes and materials, but those skilled in the art will recognize the application of other processes and / or the use of other materials.

[0030] The embodiments of this utility model will now be described in detail with reference to the accompanying drawings.

[0031] Example 1

[0032] like Figure 1 and Figure 2As shown, this embodiment discloses a pneumatic telescopic head, including a fixed support 1 and a movable support 2, with a telescopic tube provided between the fixed support 1 and the movable support 2, and a drive component for adjusting two different distances also provided between the fixed support 1 and the movable support 2.

[0033] Both the fixed support 1 and the movable support 2 are plate-shaped structures and are parallel to each other. The telescopic tube includes an outer cylinder 4 located at the top of the fixed support 1 and an inner cylinder 5 located at the bottom of the movable support 2. The fixed support 1 and the movable support 2 are respectively provided with through holes that communicate with the outer cylinder 4 and the inner cylinder 5. The inner cylinder 5 is slidably connected to the outer cylinder 4 on the same axis, and the inner cylinder 5 is in sliding contact with the inner wall of the outer cylinder 4.

[0034] A cloth bag 9 is provided between the fixed support 1 and the movable support 2. The cloth bag 9 is cylindrical and wraps around the outside of the telescopic tube. The length of the cloth bag 9 is not shorter than the length of the telescopic tube when it is at its maximum extension.

[0035] The drive assembly includes three cylinders 3 positioned between the fixed support 1 and the movable support 2. The cylinders 3 are vertically arranged perpendicular to both the fixed support 1 and the movable support 2, and are arranged in a circular trajectory concentric with the telescopic tube. The three cylinders 3 are evenly spaced along this circular trajectory. Flow regulating valves are used in the air circuits of the three cylinders 3 to ensure uniform airflow to each cylinder 3, allowing all three cylinders to operate simultaneously.

[0036] A sliding sealing assembly is provided between the inner cylinder 5 and the outer cylinder 4. This assembly allows for a sliding seal between the inner cylinder 5 and the outer cylinder 4, preventing material leakage. The sliding sealing assembly includes two scraping rings 6 located at the bottom outer edge of the inner cylinder 5. Both scraping rings 6 have wedge-shaped outer edges. The outer edge of the lower scraping ring 6 has a gap with the inner wall of the outer cylinder 4, while the outer edge of the upper scraping ring 6 slides in contact with the inner wall of the outer cylinder 4. The two scraping rings 6 perform graded scraping. The lower scraping ring 6 scrapes off the thicker and larger material from the inner wall of the outer cylinder 4 first, while the upper scraping ring 6 then scrapes off the remaining thin layer of material adhering to the inner wall of the outer cylinder 4.

[0037] The sliding sealing assembly also includes a first sliding sealing ring 7 disposed on the outer wall of the inner cylinder 5 above the two scraper rings 6. The first sliding sealing ring 7 slides and seals with the inner wall of the outer cylinder 4. The inner edge of the top end of the outer cylinder 4 is provided with a second sliding sealing ring 8 that slides and seals with the outer wall of the inner cylinder 5.

[0038] Example 2

[0039] like Figure 3As shown, this embodiment, based on embodiment 1, adds a sealing gasket 10 to the top surface of the movable support 2. The sealing gasket 10 is made of a flexible material and can be a rubber sealing structure. Three pressure switches 11 are provided on the top surface of the movable support 2 at the bottom of the sealing gasket 10. The three pressure switches 11 are arranged at equal intervals in a circular trajectory concentric with the telescopic tube. The pressure switches 11 cooperate with the cylinder 3; when any one of the three pressure switches 11 is triggered, the cylinder 3 stops extending. The setting of the pressure switches 11 results in a slight protrusion at the sealing gasket 10. This slight protrusion first contacts the connecting surface, triggering the pressure switches 11. The pressure switches 11 allow the cylinder 3 to stop working when the movable support 2 contacts the connecting surface, and at this time, the sealing gasket 10 is in contact with the connecting surface and sealed. By monitoring the triggering time difference of the three pressure switches 11, the smooth connection between the movable support 2 and the connecting surface can be monitored.

[0040] If the triggering time difference of the three pressure switches 11 is very small or there is no time difference, it proves that the sealing gasket 10 at the three pressure switches 11 is in contact with the connecting surface at the same time, and the connecting surface is flatly connected with the moving support 2.

[0041] If the triggering time difference of the three pressure switches 11 is large, it proves that the sealing gaskets 10 at the three pressure switches 11 do not contact the connecting surface at the same time, and the connection between the connecting surface and the moving support 2 is not smooth, and there may be gaps. This can also achieve the function of monitoring the sealing performance of the telescopic head connection.

[0042] The above embodiments are merely preferred embodiments of this utility model and are not intended to limit the technical solutions of this utility model. Any technical solution that can be implemented based on the above embodiments without creative effort should be considered to fall within the scope of protection of this utility model patent.

Claims

1. A pneumatic telescopic head, characterized in that, include: Fixed supports and movable supports; The expansion joint is located between the movable support and the fixed support; The drive assembly is located between the fixed support and the moving support; The telescopic tube includes an outer cylinder located at the top of the fixed support and an inner cylinder located at the bottom of the movable support. The inner cylinder and the outer cylinder are slidably connected coaxially. The drive assembly includes at least three cylinders connected between the movable support and the fixed support. The cylinders are arranged parallel to the telescopic tube.

2. The pneumatic telescopic head according to claim 1, characterized in that, Both the fixed support and the movable support are plate-shaped structures and are parallel to each other. Corresponding through holes communicating with the outer cylinder and the inner cylinder are provided on the fixed support and the movable support.

3. The pneumatic telescopic head according to claim 1, characterized in that, A cloth bag is provided between the fixed support and the movable support. The cloth bag is cylindrical and wraps around the outside of the telescopic tube.

4. The pneumatic telescopic head according to claim 1, characterized in that, The cylinders are arranged in a circular trajectory with the telescopic tube at the same center, and the cylinders are arranged at equal intervals on their circular trajectory.

5. The pneumatic telescopic head according to claim 1, characterized in that, A sliding sealing assembly is provided between the inner cylinder and the outer cylinder.

6. The pneumatic telescopic head according to claim 5, characterized in that, The sliding sealing assembly includes a first sliding sealing ring disposed on the outer wall of the inner cylinder, the first sliding sealing ring being slidably sealed with the inner wall of the outer cylinder, and a second sliding sealing ring being disposed on the inner edge of the top end of the outer cylinder being slidably sealed with the outer wall of the inner cylinder.

7. The pneumatic telescopic head according to claim 5, characterized in that, The sliding sealing assembly includes two scraping rings located on the outer edge of the bottom end of the inner cylinder. The outer edges of the two scraping rings are wedge-shaped. There is a gap between the outer edge of the lower scraping ring and the inner wall of the outer cylinder, and the outer edge of the upper scraping ring slides in contact with the inner wall of the outer cylinder.

8. The pneumatic telescopic head according to any one of claims 1 to 7, characterized in that, A sealing gasket is provided on the top surface of the movable support.

9. The pneumatic telescopic head according to claim 8, characterized in that, The top surface of the movable support at the lower part of the sealing gasket is equipped with a pressure-contact switch that cooperates with the cylinder.

10. The pneumatic telescopic head according to claim 9, characterized in that, At least three pressure switches are provided on the top surface of the movable support at the lower part of the sealing gasket, and the multiple pressure switches are arranged at equal intervals in a circular trajectory with the same center as the telescopic tube.

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