Cylinder compensation device

Abstract

The utility model discloses a cylinder compensation device which comprises a shell and an elastic cylindrical pipe, two sides of the shell are respectively communicated with a conveying pipeline, the elastic cylindrical pipe is arranged in the shell, the axis of the elastic cylindrical pipe is perpendicular to the axis of the conveying pipeline, and the elastic cylindrical pipe is filled with a compression medium. A material conveying channel communicating with the conveying pipeline is formed between the outer wall of the elastic cylindrical pipe and the inner wall of the shell. According to the utility model, the elastic cylindrical pipe is arranged and the material conveying channel wrapping the outer wall of the elastic cylindrical pipe is formed, so that materials can be in full contact with the cylindrical surface of the elastic cylindrical pipe, and the contact area is obviously larger than that of the existing diaphragm type structure; fine pressure fluctuation generated in the conveying process of the emulsion explosive can act on the outer wall of the elastic cylindrical pipe more comprehensively and rapidly, and the compensation regulation and control accuracy and response speed of the device are greatly improved.

Description

Technical Field

[0001] This utility model belongs to the field of packaging and conveying, and in particular relates to a pipeline compensation device. Background Technology

[0002] Currently, in the civil explosives emulsion packaging industry, with the continuous advancement of automation and the sustained improvement of production efficiency, the requirements for equipment performance and operational stability are also increasing. In the loading process, the loading accuracy of the emulsion loading machine directly affects the weight control of a single explosive roll, and currently, there is a problem of significant weight deviation in the packaged explosive rolls.

[0003] To effectively improve the filling accuracy of drug loading machines, optimize overall packaging quality, and reduce the weight deviation range of individual drug rolls, compensation devices are typically installed in the material conveying pipeline. These devices buffer the pulsation during material conveying, reducing the interference of flow fluctuations on filling accuracy and thus ensuring that the drug roll packaging quality meets standards. Existing compensation devices are usually elastic diaphragm compensators, which rely on the deformation characteristics of the elastic diaphragm to self-adjust and balance changes in material pressure within the conveying pipeline.

[0004] However, the actual contact area between the elastic diaphragm and the material in the existing compensation device is small. In addition, the emulsion explosive material itself has the physical characteristics of high viscosity and poor flowability, which makes it impossible to transmit subtle pressure changes in the pipeline to the elastic diaphragm in a timely and sensitive manner. The elastic diaphragm cannot make an accurate response according to the actual pressure fluctuations, which ultimately results in insufficient regulation and compensation. It is difficult to effectively offset the material conveying pulsation and the problem of large weight deviation still needs to be improved. Utility Model Content

[0005] The technical problem to be solved by this utility model is to overcome the deficiencies and defects mentioned in the background art above, and to provide a cylindrical compensation device with a large contact area between the material and the elastic component, which can promptly and sensitively adjust and compensate for pressure changes, prevents material from accumulating and clogging, and is easy to install and maintain.

[0006] To solve the above-mentioned technical problems, the technical solution proposed by this utility model is as follows:

[0007] A cylindrical compensation device includes a housing with two sides respectively connected to a conveying pipeline, and an elastic cylindrical tube disposed within the housing. The axis of the elastic cylindrical tube is perpendicular to the axis of the conveying pipeline. The interior of the elastic cylindrical tube is filled with a compression medium. A material conveying channel connected to the conveying pipeline is formed between the outer wall of the elastic cylindrical tube and the inner wall of the housing.

[0008] Preferably, the aforementioned cylindrical compensation device further includes a cylindrical support tube coaxially disposed within the elastic cylindrical tube, the cylindrical support tube having several through holes for the flow of the compression medium. This arrangement allows the elastic cylindrical tube to deform along the material flow direction when pressure is applied to the outer wall of the elastic cylindrical tube during transport, especially the impact pressure from the forward-push material. The cylindrical support tube directly limits the deformation amplitude, preventing excessive deformation due to excessive pressure. Furthermore, the through holes in the support tube allow for the free flow of the compression medium inside the elastic cylindrical tube, enabling the elastic cylindrical tube to both resist material pushing pressure and accurately respond to pressure fluctuations.

[0009] Preferably, the above-mentioned cylindrical compensation device further includes a locking assembly for fixing the elastic cylindrical tube and the cylindrical support tube. The locking assembly is disposed at both ends inside the housing. The locking assembly includes a first locking member disposed between the elastic cylindrical tube and the cylindrical support tube, and a second locking member disposed between the elastic cylindrical tube and the housing. Distributing the first locking member between the elastic cylindrical tube and the cylindrical support tube directly restricts their relative radial displacement, ensuring that the cylindrical support tube is always coaxially spaced from the elastic cylindrical tube. Distributing the second locking member between the elastic cylindrical tube and the housing further fixes the radial position of the elastic cylindrical tube within the housing.

[0010] In the aforementioned cylindrical compensation device, preferably, the first locking component is an expansion coupling sleeve. The inner side of the expansion coupling sleeve is tensioned and fixed to the outer wall of the cylindrical support tube, and its outer side is tensioned and fixed to the inner wall of the elastic cylindrical tube. During installation, the expansion coupling sleeve only needs to have its sleeve body radially expanded by tightening the bolts, allowing its inner side to fit tightly against the outer wall of the cylindrical support tube and its outer side against the inner wall of the elastic cylindrical tube, forming a gapless rigid connection. This precisely ensures the coaxiality of the cylindrical support tube and the elastic cylindrical tube, and significantly simplifies the assembly, maintenance, and replacement processes of the cylindrical support tube and the elastic cylindrical tube, improving production efficiency.

[0011] In the aforementioned cylindrical compensation device, preferably, the two ends of the elastic cylindrical tube are radially expanded outwards and form annular outward expansion steps. The second locking member is an annular locking seat. The inner side of the annular locking seat is provided with an annular anti-shrinkage ring for preventing the elastic cylindrical tube from contracting along its own axial direction. The outer side of the annular locking seat is fixedly connected to the housing. The annular anti-shrinkage ring can directly fit against the end face of the annular outward expansion step of the elastic cylindrical tube, forming a rigid axial limit, firmly blocking the contraction displacement of the elastic cylindrical tube from both ends. At the same time, when the expansion coupling sleeve is radially expanded, the annular anti-shrinkage ring and the annular outward expansion step are tightly fitted to form a sealing surface, preventing the mutual penetration between the material and the compression medium.

[0012] In the aforementioned cylindrical compensation device, preferably, the housing is a cylindrical cover, the axis of which coincides with the axis of the elastic cylindrical tube, the distance between the end faces of the two annular locking seats is equal to the diameter of the conveying pipe, and the material conveying channel is formed by the joint enclosure of the end faces of the annular locking seats, the inner wall of the cylindrical cover, and the outer wall of the elastic cylindrical tube. This arrangement allows the material to pass through the enclosed annular channel at a uniform speed and smoothly. Simultaneously, it ensures that when the material enters the annular channel of the compensation device from the conveying pipe, there is no step-like drop, allowing for a natural transition in the material flow direction and flow rate. It also avoids excessive dead zones, reduces the probability of material blockage, and is suitable for the high viscosity and low fluidity characteristics of emulsion explosives.

[0013] In the aforementioned cylindrical compensation device, preferably, the housing includes a cover and detachable end caps at both ends of the cover. This design allows workers to intuitively install the elastic cylindrical tube and the expansion coupling sleeve, reducing assembly difficulty. Furthermore, because emulsion explosives have high viscosity and require frequent cleaning and maintenance, incomplete cleaning can lead to solidified and lumpy residues, affecting the smooth flow of subsequent materials. The detachable end caps ensure complete removal of residual material, facilitating cleaning and maintenance.

[0014] In the aforementioned cylindrical compensation device, preferably, one end of the housing is provided with a drain valve for draining water accumulated in the cylindrical support pipe. Since the compressed medium is prone to accumulating water in the cylindrical support pipe during long-term circulation or temperature changes, the drain valve can be opened periodically to quickly drain the water from the support pipe, ensuring that the compressed medium always maintains a pure and uniform physical state and guaranteeing its sensitive transmission capability to pressure changes.

[0015] In the aforementioned cylindrical compensation device, preferably, one end of the housing is connected to a pneumatic control component for providing a compressed medium to the elastic cylindrical tube. The pneumatic control component includes a pneumatic hose connected at one end to the housing and a pressure-holding gas tank connected at the other end of the pneumatic hose. The pressure-holding gas tank can first store a compressed medium at a stable pressure, and then continuously output a constant pressure to the elastic cylindrical tube, avoiding the influence of gas source fluctuations on the medium pressure. This ensures that the deformation of the elastic cylindrical tube always matches the preset compensation requirements, and that the pressure of the medium delivered to the elastic cylindrical tube can be synchronously changed by adjusting the inlet pressure of the gas tank.

[0016] In the aforementioned cylindrical compensation device, preferably, the conveying pipeline includes a material inlet pipe and a material outlet pipe respectively located at both ends of the housing. The material inlet pipe is equipped with a material inlet pressure detector, and the material outlet pipe is equipped with a material outlet pressure detector. With this configuration, as the conveyed viscous material flows within the pipeline, the material inlet pressure detector and the material outlet pressure detector respectively detect the pressure of the material within the pipeline and feed the detected pressure back to the pneumatic control component, facilitating the pneumatic control component to regulate the pressure within the elastic cylindrical tube.

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

[0018] This invention utilizes an elastic cylindrical tube to form a material conveying channel that encloses its outer wall. This allows the material to fully contact the cylindrical surface of the elastic tube, resulting in a significantly larger contact area than existing diaphragm structures. Due to this increased contact area, the minute pressure fluctuations generated during the conveying process of the emulsion explosive can act more comprehensively and rapidly on the outer wall of the elastic cylindrical tube, greatly improving the accuracy and response speed of the device's compensation and control. This device features a simple and reasonable structure, stable and reliable operation, effectively suppressing flow fluctuations, and offering excellent maintainability and ease of operation. It facilitates daily maintenance and component replacement, making it suitable for applications requiring high-precision conveying of viscous materials such as emulsion explosives. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of this utility model 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 some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a three-dimensional structural schematic diagram of the cylindrical compensation device in the embodiment;

[0021] Figure 2 This is a three-dimensional structural schematic diagram of the cylindrical compensation device in an embodiment (excluding the pneumatic control components).

[0022] Figure 3 This is a schematic diagram of the longitudinal section of the cylindrical compensation device in an embodiment (excluding the pneumatic control components).

[0023] Figure 4 This is a schematic diagram of the cross-sectional structure of the cylindrical compensation device in the embodiment (excluding the pneumatic control components).

[0024] Legend

[0025] 1. Conveying pipeline; 11. Material inlet pipe; 111. Material inlet pressure detector; 12. Material outlet pipe; 121. Material outlet pressure detector; 2. Housing; 21. Cover; 22. Removable end cap; 23. Sealing ring; 3. Elastic cylindrical tube; 4. Cylindrical support tube; 41. Through hole; 5. Locking assembly; 51. Expansion coupling sleeve; 52. Annular locking seat; 521. Annular anti-shrinkage retaining ring; 6. Drain valve; 7. Pneumatic control assembly; 71. Pneumatic hose; 72. Pressure holding air tank; 73. Pressure regulating valve; 74. Control valve; 8. Material conveying channel. Detailed Implementation

[0026] To facilitate understanding of this utility model, it will be described more comprehensively and in detail below with reference to the accompanying drawings and preferred embodiments. However, the scope of protection of this utility model is not limited to the following specific embodiments.

[0027] It should be noted that when a component is described as being "snapped, fixed to, connected to, or connected to" another component, it can be directly snapped, fixed to, connected to, or connected to the other component, or it can be indirectly snapped, fixed to, connected to, or connected to the other component through other intermediate connectors.

[0028] Unless otherwise defined, all technical terms used herein have the same meaning as commonly understood by those skilled in the art. The technical terms used herein are for the purpose of describing particular embodiments only and are not intended to limit the scope of protection of this invention.

[0029] Unless otherwise specified, all raw materials, reagents, instruments and equipment used in this invention can be purchased from the market or prepared by existing methods.

[0030] Example:

[0031] like Figures 1 to 4 As shown, the cylindrical compensation device of this embodiment includes a housing 2 connected to the conveying pipe 1 on both sides, and an elastic cylindrical tube 3 disposed in the housing 2. The axis of the elastic cylindrical tube 3 is perpendicular to the axis of the conveying pipe 1. The interior of the elastic cylindrical tube 3 is filled with a compression medium. A material conveying channel 8 connected to the conveying pipe 1 is formed between the outer wall of the elastic cylindrical tube 3 and the inner wall of the housing 2.

[0032] In this embodiment, a cylindrical support tube 4 is coaxially disposed inside the elastic cylindrical tube 3, and the cylindrical support tube 4 has a plurality of through holes 41 for the flow of the compression medium.

[0033] In this embodiment, a locking assembly 5 for fixing the elastic cylindrical tube 3 and the cylindrical support tube 4 is also included. The locking assembly 5 is disposed at both ends inside the housing 2. The locking assembly 5 includes a first locking member disposed between the elastic cylindrical tube 3 and the cylindrical support tube 4, and a second locking member disposed between the elastic cylindrical tube 3 and the housing 2.

[0034] In this embodiment, the first locking component is an expansion coupling sleeve 51. The inner side of the expansion coupling sleeve 51 is tensioned and fixed to the outer wall of the cylindrical support tube 4, and its outer side is tensioned and fixed to the inner wall of the elastic cylindrical tube 3.

[0035] In this embodiment, the two ends of the elastic cylindrical tube 3 are radially expanded and form annular expansion steps. The second locking component is an annular locking seat 52. The inner side of the annular locking seat 52 is provided with an annular anti-shrinkage ring 521 for preventing the elastic cylindrical tube 3 from shrinking along its own axis. The outer side of the annular locking seat 52 is fixedly connected to the shell 2.

[0036] In this embodiment, the housing 2 is a cylindrical cover, the axis of the cylindrical cover coincides with the axis of the elastic cylindrical tube 3, the end face distance between the two annular positioning seats 52 is equal to the diameter of the conveying pipe 1, and the material conveying channel 8 is formed by the end face of the annular positioning seats 52, the inner wall of the cylindrical cover and the outer wall of the elastic cylindrical tube 3.

[0037] In this embodiment, the housing 2 includes a cover 21 and detachable end caps 22 disposed at both ends of the cover 21. A sealing ring 23 is provided at the connection between the detachable end cap 22 and the cover 21.

[0038] In this embodiment, a drain valve 6 is provided at one end of the housing 2 to drain the water accumulated in the cylindrical support pipe 4.

[0039] In this embodiment, one end of the housing 2 is connected to a pneumatic control assembly 7 for providing a compressed medium to the elastic cylindrical tube 3. The pneumatic control assembly 7 includes a pneumatic hose 71 connected to the housing 2 at one end, and a pressure-holding gas tank 72 connected to the other end of the pneumatic hose 71. The pneumatic control assembly 7 also includes a pressure regulating valve 73 with a backflow pressure relief function and a control valve 74 connected to the pressure-holding gas tank 72.

[0040] In this embodiment, the conveying pipeline 1 includes a material inlet pipe 11 and a material outlet pipe 12 respectively located at both ends of the housing 2. The material inlet pipe 11 is equipped with a material inlet pressure detector 111, and the material outlet pipe 12 is equipped with a material outlet pressure detector 121.

[0041] In this embodiment, the compression medium is compressed air. In other embodiments, the required pressure can also be provided by filling the interior with liquids such as water or oil through a pressure source.

[0042] In this embodiment, the specific working principle includes:

[0043] The viscous material enters the material conveying channel 8 through the material inlet pipe 11 and exits through the material outlet pipe 12. During the flow through the material conveying channel 8, the material comes into large-area contact with the outer surface of the elastic cylindrical tube 3 and is subjected to a certain pressure. At this time, the pneumatic control component 7 applies a pressure equal to that on the outer side of the elastic cylindrical tube 3, so that the elastic cylindrical tube 3 is in a pressure balance state.

[0044] When the material flow rate in the conveying pipe 1 increases, the internal pressure of the material rises, leading to an increase in the pressure acting on the outside of the elastic cylindrical tube 3. Consequently, the tube deforms inward. This deformation keeps the pressure of the flowing material stable, thus maintaining a relatively constant flow rate at the material outlet pipe 12. Conversely, when the material flow rate decreases, the internal pressure of the material decreases, reducing the pressure on the outside of the elastic cylindrical tube 3. Under the action of compressed air inside, the tube deforms outward to compensate for the pressure change, keeping the material pressure stable and thus maintaining the stability of the outlet flow rate.

[0045] In summary, when the material flow rate in the conveying pipeline 1 pulsates, by providing stable pressure to the inside of the elastic cylindrical tube 3, the device can dynamically compensate for pressure changes, effectively suppress the flow pulsation of viscous materials during the conveying process, improve flow stability, and ultimately achieve smooth material conveying in the pipeline, significantly improving product filling accuracy.

[0046] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A cylindrical compensation device, comprising a housing (2) with its two sides respectively connected to a conveying pipe (1), characterized in that, It also includes an elastic cylindrical tube (3) disposed inside the housing (2), the axis of the elastic cylindrical tube (3) being perpendicular to the axis of the conveying pipe (1), the interior of the elastic cylindrical tube (3) being filled with a compression medium, and a material conveying channel (8) connected to the conveying pipe (1) being formed between the outer wall of the elastic cylindrical tube (3) and the inner wall of the housing (2).

2. The cylindrical compensation device according to claim 1, characterized in that, It also includes a cylindrical support tube (4) coaxially disposed inside the elastic cylindrical tube (3), and the cylindrical support tube (4) has several through holes (41) for the flow of the compression medium.

3. The cylindrical compensation device according to claim 2, characterized in that, It also includes a locking assembly (5) for fixing the elastic cylindrical tube (3) and the cylindrical support tube (4). The locking assembly (5) is located at both ends inside the housing (2). The locking assembly (5) includes a first locking member located between the elastic cylindrical tube (3) and the cylindrical support tube (4), and a second locking member located between the elastic cylindrical tube (3) and the housing (2).

4. The cylindrical compensation device according to claim 3, characterized in that, The first locking component is an expansion coupling sleeve (51). The inner side of the expansion coupling sleeve (51) is tensioned and fixed to the outer wall of the cylindrical support tube (4), and its outer side is tensioned and fixed to the inner wall of the elastic cylindrical tube (3).

5. The cylindrical compensation device according to claim 3, characterized in that, The two ends of the elastic cylindrical tube (3) are radially expanded and form annular expansion steps. The second locking member is an annular locking seat (52). The inner side of the annular locking seat (52) is provided with an annular anti-shrinkage ring (521) to prevent the elastic cylindrical tube (3) from shrinking along its own axis. The outer side of the annular locking seat (52) is fixedly connected to the shell (2).

6. The cylindrical compensation device according to claim 5, characterized in that, The housing (2) is a cylindrical cover, the axis of the cylindrical cover coincides with the axis of the elastic cylindrical tube (3), the distance between the end faces of the two annular locking seats (52) is equal to the diameter of the conveying pipe (1), and the material conveying channel (8) is formed by the end face of the annular locking seat (52), the inner wall of the cylindrical cover and the outer wall of the elastic cylindrical tube (3).

7. The cylindrical compensation device according to any one of claims 1-6, characterized in that, The housing (2) includes a cover (21) and detachable end caps (22) located at both ends of the cover (21).

8. The cylindrical compensation device according to any one of claims 2-6, characterized in that, One end of the housing (2) is provided with a drain valve (6) for draining the water accumulated in the cylindrical support pipe (4).

9. The cylindrical compensation device according to any one of claims 1-6, characterized in that, One end of the housing (2) is connected to a pneumatic control assembly (7) for providing a compressed medium to the elastic cylindrical tube (3). The pneumatic control assembly (7) includes a pneumatic hose (71) connected to the housing (2) at one end, and a pressure-holding gas tank (72) connected to the other end of the pneumatic hose (71).

10. The cylindrical compensation device according to any one of claims 1-6, characterized in that, The conveying pipeline (1) includes a material inlet pipe (11) and a material outlet pipe (12) respectively located at both ends of the housing (2). The material inlet pipe (11) is equipped with a material inlet pressure detector (111), and the material outlet pipe (12) is equipped with a material outlet pressure detector (121).

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