Expansion joint of airflow cut tobacco dryer

Abstract

The utility model discloses an airflow cut tobacco dryer expansion joint which comprises an expansion joint body, first installation flanges are arranged at the two ends of the expansion joint body respectively, a flow guide sleeve assembly is arranged in the expansion joint body and comprises two flow guide sleeves which are oppositely matched in an inserted mode in the axial direction, and second installation flanges are arranged at the outer ends of the two flow guide sleeves respectively. The second installation flanges of the two flow guide sleeves are located on the outer sides of the two first installation flanges at the two ends of the expansion joint body respectively, sealing gaskets are arranged on the outer sides of the second installation flanges of the two flow guide sleeves respectively, and the first installation flanges, the second installation flanges and the sealing gaskets are fixedly connected with flanges of a process pipeline. Compared with the prior art, the expansion joint has the advantages that the expansion joint is effectively prevented from falling off, process gas leakage is avoided, and the service life of the expansion joint is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of cigarette processing equipment, in particular to an expansion joint of an airflow tobacco drying machine. Background Art

[0002] The working principle of an airflow tow dryer is to suspend tobacco or other materials in a high-speed hot air flow, leveraging the large contact area between the two phases to enhance heat and mass transfer, achieving rapid drying. The hot air flow is powered by a circulating fan. To reduce the impact of fan vibration on the process piping, the fan and process piping are connected via an expansion joint. Currently, the expansion joint is secured to the guide sleeve at the process piping flange using a clamp. Because the expansion joint expands and contracts with temperature fluctuations, the clamp can easily become loose due to deformation of the expansion joint, causing the expansion joint to fall off and shut down the machine. Furthermore, the guide sleeve is relatively short, allowing the high-temperature process gas to directly impact the surface of the expansion joint, causing it to age and become detached, leading to process gas leakage. Utility Model Content

[0003] The purpose of the utility model is to overcome the deficiencies of the prior art and provide an expansion joint for an airflow tofu drying machine, so as to prevent the expansion joint from falling off and prolong the service life of the expansion joint.

[0004] The utility model is realized through the following technical solutions:

[0005] An expansion joint for an airflow tomato drying machine comprises an expansion joint body, wherein first mounting flanges are respectively provided at both ends of the expansion joint body, a guide sleeve assembly is provided inside the expansion joint body, the guide sleeve assembly comprises two guide sleeves that are relatively plugged in along the axial direction, second mounting flanges are respectively provided at the outer ends of the two guide sleeves, the second mounting flanges of the two guide sleeves are respectively located outside the two first mounting flanges at both ends of the expansion joint body, sealing gaskets are respectively provided outside the second mounting flanges of the two guide sleeves, and the first mounting flange, the second mounting flange and the sealing gasket are fixedly connected to the flange of the process pipeline.

[0006] As a preferred solution of the above expansion joint, the two guide sleeves are respectively the first guide sleeve and the second guide sleeve, the inner end of the first guide sleeve is provided with an inward-retracted conical closing section, and the first guide sleeve is embedded in the inner cavity of the second guide sleeve through the conical closing section.

[0007] As a preferred solution of the above expansion joint, the first mounting flange, the second mounting flange and the sealing gasket are fixedly connected to the flange of the process pipeline by means of screw connections.

[0008] As a preferred solution of the above expansion joint, the sealing gasket is a high-temperature gasket.

[0009] Compared with the prior art, the present invention has the following advantages:

[0010] The utility model provides an expansion joint for an air flow tobacco drying machine, wherein first mounting flanges are respectively provided at both ends of the expansion joint body, second mounting flanges are respectively provided at both ends of the guide sleeve assembly, the first mounting flange, the second mounting flange and the sealing gasket on the corresponding sides are sequentially stacked and fixedly connected to the flange of the process pipeline, such a connection method is firmly fixed and not easy to loosen, thereby realizing a stable installation of the expansion joint; at the same time, the guide sleeve assembly is designed as a split structure, and its two guide sleeves are relatively plugged in and matched along the axial direction, and the guide sleeve can completely separate the expansion joint body from the process gas in the process pipeline, thereby avoiding aging and detachment of the expansion joint body due to direct impact of high-temperature process gas on the surface of the expansion joint body, thereby extending the service life of the expansion joint and avoiding leakage of process gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a three-dimensional diagram of the present utility model.

[0012] Figure 2 It is a three-dimensional exploded view of the present utility model.

[0013] Figure 3 It is a three-dimensional diagram of the first guide sleeve of the utility model.

[0014] Numbers in the figure: 1 expansion joint body; 2 first mounting flange; 3 first guide sleeve; 4 second guide sleeve; 5 tapered end section; 6 second mounting flange; 7 sealing gasket; 8 screw; 9 through hole. DETAILED DESCRIPTION

[0015] The following is a detailed description of an embodiment of the present invention. This embodiment is implemented based on the technical solution of the present invention, and provides a detailed implementation method and specific operation process. However, the protection scope of the present invention is not limited to the following embodiment.

[0016] See also Figures 1 to 3 This embodiment discloses an expansion joint for an airflow tofu drying machine, comprising an expansion joint body 1, with first mounting flanges 2 provided at both ends of the expansion joint body 1, a guide sleeve assembly provided inside the expansion joint body 1, and two guide sleeves that are plugged in relative to each other along the axial direction, the two guide sleeves being a first guide sleeve 3 and a second guide sleeve 4. The inner end of the first guide sleeve 3 is provided with an inwardly tapered closing section 5, and the first guide sleeve 3 is embedded in the inner cavity of the second guide sleeve 4 through the tapered closing section 5. The outer ends of the two guide sleeves are respectively provided with second mounting flanges 6, and the second mounting flanges 6 of the two guide sleeves are respectively located on the outside of the two first mounting flanges 2 at both ends of the expansion joint body 1. The outer sides of the second mounting flanges 6 of the two guide sleeves are respectively provided with sealing gaskets 7, which are high-temperature gaskets. The first mounting flange 2, the second mounting flange 6, and the sealing gasket 7 are fixedly connected to the flange of the process pipeline.

[0017] The first mounting flange 2, the second mounting flange 6, and the sealing gasket 7 are fixedly connected to the flange on the corresponding side of the process pipeline by screws 8. The first mounting flange 2, the second mounting flange 6, and the sealing gasket 7 are respectively provided with a plurality of through-holes 9 for the screws 8 to pass through.

[0018] The expansion joint for the airflow tofu drying machine provided in this embodiment has a main body 1 of the expansion joint fixedly connected to the two flanges of the process pipeline by screws 8 at both ends. Compared with the original pressure hoop connection method, this connection method is more stable, the expansion joint is not easy to loosen, and the downtime caused by the loose expansion joint is avoided, and it is easy to disassemble. In addition, the guide sleeve assembly is designed as a split structure, and the two guide sleeves are relatively nested and matched along the axial direction, so that the guide sleeve assembly can completely isolate the expansion joint main body 1 from the process gas in the process pipeline, avoiding the aging and detachment of the expansion joint main body 1 due to the direct impact of high-temperature process gas on the surface of the expansion joint main body 1, extending the service life of the expansion joint and preventing process gas leakage.

[0019] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. An expansion joint for an airflow tofu drying machine, comprising an expansion joint body, characterized in that: The expansion joint body is provided with a first mounting flange at each end, a guide sleeve assembly is provided inside the expansion joint body, the guide sleeve assembly includes two guide sleeves that are relatively plugged in along the axial direction, the outer ends of the two guide sleeves are provided with a second mounting flange, the second mounting flanges of the two guide sleeves are respectively located on the outside of the two first mounting flanges at both ends of the expansion joint body, and sealing gaskets are respectively provided on the outside of the second mounting flanges of the two guide sleeves, and the first mounting flange, the second mounting flange and the sealing gasket are fixedly connected to the flange of the process pipeline.

2. The expansion joint of an airflow tofu drying machine according to claim 1, characterized in that: The two guide sleeves are respectively a first guide sleeve and a second guide sleeve. The inner end of the first guide sleeve is provided with an inward-retracted conical closing section, and the first guide sleeve is embedded in the inner cavity of the second guide sleeve through the conical closing section.

3. The expansion joint of an airflow tofu drying machine according to claim 1, characterized in that: The first mounting flange, the second mounting flange and the sealing gasket are fixedly connected to the flange of the process pipeline by screw connection.

4. The expansion joint of an airflow tofu drying machine according to claim 1, characterized in that: The sealing gasket is a high-temperature gasket.

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