Candy machine chain with sealing structure

Abstract

The utility model relates to the field of chains, and particularly discloses a sugar machine chain with a sealing structure. The sugar machine chain comprises an inner chain link, an outer chain plate and a pin shaft, wherein the inner chain link comprises an inner chain plate and a sleeve; the sealing ring comprises a mounting limiting layer and a sealing layer from inside to outside in the radial direction; the large end of the sealing layer is provided with a large-end outer sealing lip and a large-end inner sealing lip, the large-end outer sealing lip and the large-end inner sealing lip are annularly and coaxially arranged, and both the large-end outer sealing lip and the large-end inner sealing lip are outwards inclined; the sealing ring is arranged between the inner chain plate and the outer chain plate, the pin shaft penetrates through the installation limiting layer, and the sealing layer is tightly pressed by the inner chain plate and the outer chain plate. The sealing ring in the sugar machine chain adopts a multi-stage sealing structure, so that the sugar machine chain can well adapt to the operation working condition of sugar manufacturing machinery, the service life of the sugar machine chain is effectively prolonged, and the working stability of the sugar machine chain is effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of chains, and particularly relates to a sugar machine chain with a sealing structure. Background Art

[0002] Sugar-making machinery is a device for processing raw sugar into high-quality white sugar, and is an important part of the sugar-making industry, usually including a syrup pan, a mixer, etc. During the sugar-making process, sugar machine chains are required for transporting raw sugar and waste, but a large number of fine particles are generated during the sugar-making process, which are extremely easy to enter the moving parts of the sugar machine chain, exacerbating the wear of the sugar machine chain and affecting the normal operation and service life of the sugar machine chain.

[0003] At present, most improvements to sugar machine chains focus on improving their wear resistance and corrosion resistance. For example, the Chinese utility model patent with the authorization announcement number CN216589775 U discloses a sugar machine chain, which enhances the internal and external wear resistance of the chain plate through special materials. In the field of chains, there are also cases of improving the service life by setting seals to reduce the entry of impurities. For example, the Chinese utility model patent with the authorization announcement number CN 220850571 U discloses a chain that can be used in a low-temperature environment, and a sealing gasket is provided between the inner link plate and the outer link plate. However, the conventional seals used in the above chains have limited sealing effects and are difficult to adapt to the working environment of sugar machine chains. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a sugar machine chain with a sealing structure, in which the sealing ring adopts a multi-stage sealing structure, which can well adapt to the operating conditions of sugar-making machinery and effectively improve the service life and working stability of the sugar machine chain.

[0005] To solve the above technical problem, the technical solution provided by the utility model is as follows: A sugar machine chain with a sealing structure includes inner link sections, outer link plates and pins. The inner link sections include inner link plates and sleeves, and the inner link plates are hermetically connected to the sleeves. Each inner link section is connected by an outer link plate and a pin.

[0006] It further includes a sealing ring. One end of the sealing ring in the axial direction is the large end, and the other end is the small end. The sealing ring includes an installation limiting layer and a sealing layer from the inside to the outside in the radial direction. Under normal conditions, the large end of the sealing layer is set higher than the large end of the installation limiting layer.

[0007] The large end of the sealing layer is provided with a large-end outer sealing lip and a large-end inner sealing lip. The large-end outer sealing lip and the large-end inner sealing lip are coaxially arranged in a ring shape, and the large-end outer sealing lip is sleeved outside the large-end inner sealing lip. Both the large-end outer sealing lip and the large-end inner sealing lip are inclined outward.

[0008] The sealing ring is arranged between the inner link plate and the outer link plate. The pin shaft passes through the installation limiting layer, and the installation limiting layer is sleeved outside the sleeve. The inner link plate and the outer link plate press the sealing layer.

[0009] During the assembly of the chain, first, the inner link plate and the sleeve are in interference fit to form an inner link. Subsequently, each inner link is connected in series through the inner link plate and the pin shaft. The sealing ring is arranged between the inner link plate and the outer link plate and is sleeved on the pin shaft. After pressing, both the outer sealing lip and the inner sealing lip of the large end expand outwards, and both the outer sealing lip and the inner sealing lip of the large end are in extrusion sealing with the corresponding link plate, forming a labyrinth seal. At the same time, the small end of the sealing layer is also in extrusion sealing with the corresponding link plate, forming a complete and reliable sealing structure between the inner link plate and the outer link plate, effectively preventing impurities from entering, and improving the service life and working stability of the sugar machine chain.

[0010] In addition, since both the outer sealing lip and the inner sealing lip of the large end are in an expanded state and there is a certain amount of deformation stress, when the outer sealing lip and the inner sealing lip of the large end are slightly worn, the outer sealing lip and the inner sealing lip of the large end can automatically compensate under the action of the deformation stress to ensure reliable sealing.

[0011] Preferably, under normal conditions, the end of the outer sealing lip of the large end is higher than the end of the inner sealing lip of the large end, and the end of the inner sealing lip of the large end is not lower than the large end of the installation limiting layer.

[0012] Preferably, in the radial direction, a large-end outer transition groove is provided between the outer sealing lip and the inner sealing lip of the large end.

[0013] Preferably, in the radial direction, a large-end inner transition groove is provided between the installation limiting layer and the inner sealing lip of the large end.

[0014] Preferably, the small end of the sealing layer is provided with a small-end sealing lip. In the radial direction, the small-end sealing lip is located between the outer sealing lip and the inner sealing lip of the large end; under normal conditions, the end of the small-end sealing lip is not higher than the small end of the installation limiting layer.

[0015] Preferably, in the radial direction, a small-end transition groove is provided between the installation limiting layer and the small-end sealing lip.

[0016] The small end of the sealing layer contacts the corresponding link plate through the small-end sealing lip, and the small end of the installation limiting layer is also in extrusion sealing with the corresponding link plate. At the same time, the sealing effect is enhanced in a labyrinth form between the installation limiting layer and the small-end sealing lip. Description of the Drawings

[0017] Figure 1 It is the front view of the sugar machine chain with a sealing structure in this embodiment;

[0018] Figure 2Top view of the sugar machine chain with a sealing structure in this embodiment;

[0019] Figure 3 is Figure 2 Partial enlarged view of part A in

[0020] Figure 4 Cross-sectional view of the sealing ring in the sugar machine chain with a sealing structure in this embodiment;

[0021] Figure 5 is Figure 4 Partial enlarged view of part B in Detailed implementation mode

[0022] In order to make the purpose, technical solutions and advantages of the present utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present utility model and are not used to limit the present utility model. Embodiment

[0023] As Figures 1-3 shown, a sugar machine chain with a sealing structure includes an inner link 1, an outer link plate 2 and a pin 3. The inner link 1 includes an inner link plate 11 and a sleeve 12. The inner link plate 11 is sealingly connected to the sleeve 12, and each inner link 1 is connected by an outer link plate 2 and a pin 3. When assembling the chain, first, the inner link plate 11 and the sleeve 12 are in interference fit to form the inner link 1, and then each inner link 1 is connected in series through the inner link plate 11 and the pin 3.

[0024] As Figures 3-5 shown, it further includes a sealing ring 4. One end of the sealing ring 4 in the axial direction is the large end 42, and the other end is the small end 41. The sealing ring 4 includes an installation limiting layer 44 and a sealing layer 43 from the inside to the outside in the radial direction. Under normal conditions, the large end of the sealing layer 43 is set higher than the large end of the installation limiting layer 44.

[0025] As Figure 4 and Figure 5 shown, the large end of the sealing layer 43 is provided with a large end outer sealing lip 433 and a large end inner sealing lip 435. The large end outer sealing lip 433 and the large end inner sealing lip 435 are coaxially arranged in a ring shape, and the large end outer sealing lip 433 is sleeved outside the large end inner sealing lip 435. The large end outer sealing lip 433 and the large end inner sealing lip 435 are both inclined outward.

[0026] As Figure 4 and Figure 5As shown, specifically, under normal conditions, the end of the large-end outer sealing lip 433 is set higher than the end of the large-end inner sealing lip 435, and the end of the large-end inner sealing lip 435 is not lower than the large end of the installation limiting layer 44. Radially, a large-end outer transition groove 434 is provided between the large-end outer sealing lip 433 and the large-end inner sealing lip 435. Radially, a large-end inner transition groove 436 is provided between the installation limiting layer 44 and the large-end inner sealing lip 435.

[0027] As Figure 4 and Figure 5 As shown, specifically, the small end of the sealing layer 43 is provided with a small-end sealing lip 432. Radially, the small-end sealing lip 432 is located between the large-end outer sealing lip 433 and the large-end inner sealing lip 435. Under normal conditions, the end of the small-end sealing lip 432 is not higher than the small end of the installation limiting layer 44. Radially, a small-end transition groove 431 is provided between the installation limiting layer 44 and the small-end sealing lip 432.

[0028] The small end of the sealing layer 43 contacts the corresponding link plate through the small-end sealing lip 432, and the small end of the installation limiting layer 44 also squeezes and seals with the corresponding link plate. At the same time, a labyrinth form is also adopted between the installation limiting layer 44 and the small-end sealing lip 432 to enhance the sealing effect.

[0029] As Figure 2 and Figure 3 As shown, the sealing ring 4 is arranged between the inner link plate 11 and the outer link plate 2. The pin shaft 3 passes through the installation limiting layer 44. The installation limiting layer 44 is sleeved outside the sleeve 12. The inner link plate 11 and the outer link plate 2 press the sealing layer 43.

[0030] The sealing ring 4 is arranged between the inner link plate 11 and the outer link plate 2 and is sleeved on the pin shaft 3. After being pressed, both the large-end outer sealing lip 433 and the large-end inner sealing lip 435 expand outwards, and both the large-end outer sealing lip 433 and the large-end inner sealing lip 435 squeeze and seal with the corresponding link plates to form a labyrinth seal. At the same time, the small end of the sealing layer 43 also squeezes and seals with the corresponding link plate, forming a complete and reliable sealing structure between the inner link plate 11 and the outer link plate 2, effectively avoiding the entry of impurities, and improving the service life and working stability of the sugar machine chain.

[0031] In addition, since both the large-end outer sealing lip 433 and the large-end inner sealing lip 435 are in an expanded state and there is a certain deformation stress, when the large-end outer sealing lip 433 and the large-end inner sealing lip 435 are slightly worn, the large-end outer sealing lip 433 and the large-end inner sealing lip 435 can automatically compensate under the action of the deformation stress to ensure reliable sealing.

[0032] In summary, the above are only the preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A sugar machine chain with a sealing structure, comprising an inner chain link, an outer chain plate and a pin, wherein the inner chain link comprises an inner chain plate and a sleeve, the inner chain plate is sealedly connected to the sleeve, and each inner chain link is connected through an outer chain plate and a pin; Features: It also includes a sealing ring, wherein one end of the sealing ring is a large end and the other end is a small end in the axial direction, and the sealing ring includes a mounting limit layer and a sealing layer from the inside to the outside in the radial direction, and under normal conditions, the large end of the sealing layer is arranged higher than the large end of the mounting limit layer; The large end of the sealing layer is provided with a large end outer sealing lip and a large end inner sealing lip, the large end outer sealing lip and the large end inner sealing lip are coaxially arranged in an annular shape, and the large end outer sealing lip is sleeved outside the large end inner sealing lip; the large end outer sealing lip and the large end inner sealing lip are both inclined outwards; The sealing ring is arranged between the inner link plate and the outer link plate, the pin shaft passes through the installation limiting layer, the installation limiting layer is sleeved outside the sleeve, and the inner link plate and the outer link plate press the sealing layer.

2. The sugar machine chain according to claim 1, characterized in that: Under normal conditions, the end of the large-end outer sealing lip is set higher than the end of the large-end inner sealing lip, and the end of the large-end inner sealing lip is not set lower than the large end of the installation limiting layer.

3. The sugar machine chain according to claim 1, characterized in that: In the radial direction, a large end outer transition groove is provided between the large end outer sealing lip and the large end inner sealing lip.

4. The sugar machine chain according to claim 1, characterized in that: In the radial direction, a large end inner transition groove is provided between the installation limiting layer and the large end inner sealing lip.

5. The sugar machine chain according to any one of claims 1 to 4, characterized in that: The small end of the sealing layer is provided with a small end sealing lip, and in the radial direction, the small end sealing lip is located between the large end outer sealing lip and the large end inner sealing lip; under normal conditions, the end of the small end sealing lip is not higher than the small end setting of the installation limit layer.

6. The sugar machine chain according to claim 5, characterized in that: In the radial direction, a small end transition groove is provided between the installation limiting layer and the small end sealing lip.

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