Sealing device of screw conveyer

Abstract

The utility model discloses a screw conveyor sealing device which comprises a shell, a driving structure is arranged on the outer side of the shell and connected to a screw conveying shaft, a notch is formed in the middle of the vertical side wall of the shell, the section of the notch is in a T shape, a bearing is arranged at the notch, and a locking plate is further arranged on the vertical side wall of the shell. A round hole for the spiral conveying shaft to penetrate through is formed in the middle of the locking plate, a sealing gasket is arranged at the round hole of the locking plate, a baffle is further arranged in the shell, the baffle is the same as the vertical side wall of the shell in structure, a second bearing is arranged on the face, away from the vertical side wall of the shell, of the baffle, and inward grooves are formed in the peripheral side end face of the second locking plate, the second sealing gasket and the baffle. And a third sealing gasket is arranged in the groove. The space is formed between the baffle and the vertical side wall of the shell, so that the possibility that sewage extends into the driving structure is reduced, and the sealing effect is improved; meanwhile, the protection plate is arranged and used for blocking impurity particles of sewage, impact on the sealing gasket is reduced, and the service life of the sealing gasket is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of screw conveyors for sewage treatment, in particular to a sealing device for a screw conveyor. Background Art

[0002] Screw conveyor is one of the equipment used for sewage separation, treatment or transportation. The screw conveying shaft of the existing screw conveyor generally passes through the shell and is connected to the external drive structure. When passing through the shell, there is generally only a sealing gasket for sealing protection. However, the sealing protection effect of a simple sealing gasket is limited. If the seal at one end fails, the sewage may enter the drive structure or directly overflow to the outside of the casing, resulting in poor sewage separation or transportation effect. At the same time, particulate impurities in the sewage may also impact the sealing gasket and affect the sealing effect. Utility Model Content

[0003] The purpose of the utility model is to provide a sealing device for a screw conveyor with guaranteed sealing effect in view of the deficiencies existing in the above-mentioned background technology.

[0004] In order to achieve the above purpose, the utility model provides a sealing device for a screw conveyor, which adopts the following technical scheme:

[0005] A screw conveyor sealing device comprises a shell, a cover plate is provided at the upper end of the shell, a driving structure is provided on the outer side of the shell, the driving structure is connected to a screw conveying shaft passing through the vertical side wall of the shell, a notch is opened in the middle of the vertical side wall of the shell, the notch cross-section is T-shaped, a bearing is provided at the notch, the inner ring of the bearing is connected to the screw conveying shaft, a locking plate is also provided on the vertical side wall of the shell, the locking plate abuts the bearing, a circular hole is provided in the middle of the locking plate for the screw conveying shaft to pass through, a sealing gasket is provided at the circular hole of the locking plate, a baffle is also provided in the shell, the baffle structure is the same as the vertical side wall of the shell, a second bearing, a second locking plate, and a second sealing gasket are provided on the side of the baffle away from the vertical side wall of the shell, an inward groove is provided on the outer peripheral side end face of the baffle, and a third sealing gasket is provided in the groove.

[0006] A further improvement of the sealing device for a screw conveyor of the utility model is that a liquid outlet is arranged at the lower end of the shell, and the liquid outlet is arranged between the baffle plate and the vertical side wall of the shell.

[0007] A further improvement of the screw conveyor sealing device of the utility model is that a pressure plate is provided on a side away from the vertical side wall of the shell, the cross-section of the pressure plate is L-shaped, a protective plate is provided between the pressure plate and the baffle, the outer end of the protective plate is arranged obliquely, and the inclination direction is away from the vertical side wall of the shell, and the outer end of the protective plate is against the shell.

[0008] A further improvement of the screw conveyor sealing device of the utility model is that a second pressure plate is provided on the side of the baffle away from the vertical side wall of the shell, the cross-section of the second pressure plate is L-shaped, a second protective plate is provided between the second pressure plate and the baffle, the outer end of the second protective plate is arranged obliquely, and the inclination direction is away from the vertical side wall of the shell, and the outer end of the second protective plate is close to the screw conveyor shaft.

[0009] Compared with the prior art, the beneficial effects of the utility model are:

[0010] The utility model forms a space between the additional baffle and the vertical side wall of the shell, thereby reducing the possibility of sewage extending into the driving structure and improving the sealing effect; at the same time, a protective plate is provided to block impurity particles in the sewage, thereby reducing the impact on the sealing gasket and extending its service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 It is a schematic diagram of the structure of the utility model;

[0012] In the figure: 1 shell, 2 cover plate, 3 vertical side wall of shell, 4 driving structure, 5 screw conveying shaft, 6 notch, 7 bearing, 8 locking plate, 9 sealing gasket, 10 baffle, 11 second bearing, 12 second locking plate, 13 second sealing gasket, 14 third sealing gasket, 15 pressure plate, 16 protective plate. DETAILED DESCRIPTION

[0013] 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.

[0014] like Figure 1 As shown, a screw conveyor sealing device includes a shell 1, a cover plate 2 is provided at the upper end of the shell, a driving structure 4 is provided on the outer side of the vertical side wall of the shell, the driving structure is connected to the screw conveying shaft 5 passing through the vertical side wall 3 of the shell, a notch 6 is opened in the middle of the vertical side wall of the shell, the notch cross section is T-shaped, a bearing 7 is provided at the notch, the inner ring of the bearing is connected to the screw conveying shaft, a locking plate 8 is also provided on the vertical side wall of the shell, and the connection structure between the locking plate and the vertical side wall of the shell can be realized by bolt fasteners. The locking plate contacts the bearing, a circular hole is provided in the middle of the locking plate for the screw conveying shaft to pass through, a sealing gasket 9 is provided at the circular hole of the locking plate, and a baffle 10 is also provided in the shell, the baffle structure is the same as the vertical side wall of the shell, a second bearing 11, a second locking plate 12, and a second sealing gasket 13 are provided on the side of the baffle away from the vertical side wall of the shell, an inward groove is provided on the end face of the outer peripheral side of the baffle, and a third sealing gasket 14 is provided in the groove.

[0015] A liquid outlet (not shown in the figure) is provided at the lower end of the shell, and the liquid outlet is arranged between the baffle and the vertical side wall of the shell.

[0016] Furthermore, a pressure plate 15 is provided on one side of the baffle away from the vertical side wall of the shell, and the connection method of the pressure plate can also be bolt connection. The cross section of the pressure plate is L-shaped, and a protective plate 16 is provided between the pressure plate and the baffle, that is, the protective plate is arranged in the gap between the pressure plate and the baffle. The outer end of the protective plate is arranged obliquely, and the inclination direction is away from the side of the vertical side wall of the shell, and the outer end of the protective plate is against the shell.

[0017] Furthermore, a second pressure plate (not shown in the figure) is provided on the side of the baffle away from the vertical side wall of the shell, and the cross-section of the second pressure plate is L-shaped. A second protective plate is provided between the second pressure plate and the baffle, and the outer end of the second protective plate is arranged at an angle, and the inclination direction is away from the side of the vertical side wall of the shell, and the outer end of the second protective plate is close to the screw conveyor shaft.

[0018] The working principle of the utility model is as follows: the protective plate protects the third sealing gasket, and the second protective plate protects the second sealing gasket and the second bearing, so as to prevent the debris particles in the sewage from impacting the sealing structure and affecting the sealing performance; on the other hand, even if sewage penetrates into the space behind the baffle, it can be discharged in time, thereby reducing the penetration effect on the driving structure and improving the overall sealing protection performance.

[0019] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

Claims

1. A sealing device for a screw conveyor, characterized in that: It includes a shell, a cover plate is provided on the upper end of the shell, a driving structure is provided on the outer side of the shell, the driving structure is connected to the screw conveying shaft passing through the vertical side wall of the shell, a notch is opened in the middle of the vertical side wall of the shell, the cross-section of the notch is T-shaped, a bearing is provided at the notch, the inner ring of the bearing is connected to the screw conveying shaft, a locking plate is also provided on the vertical side wall of the shell, the locking plate abuts the bearing, a circular hole is provided in the middle of the locking plate for the screw conveying shaft to pass through, a sealing gasket is provided at the circular hole of the locking plate, a baffle is also provided in the shell, the baffle structure is the same as the vertical side wall of the shell, a second bearing, a second locking plate, and a second sealing gasket are provided on the side of the baffle away from the vertical side wall of the shell, an inward groove is provided on the outer peripheral side end face of the baffle, and a third sealing gasket is provided in the groove.

2. A screw conveyor sealing device according to claim 1, characterized in that: A liquid outlet is provided at the lower end of the shell, and the liquid outlet is arranged between the baffle and the vertical side wall of the shell.

3. A screw conveyor sealing device according to claim 2, characterized in that: A pressure plate is also provided on one side of the baffle away from the vertical side wall of the shell. The cross-section of the pressure plate is L-shaped. A protective plate is provided between the pressure plate and the baffle. The outer end of the protective plate is arranged obliquely, and the inclination direction is away from the vertical side wall of the shell. The outer end of the protective plate is against the shell.

4. A screw conveyor sealing device according to claim 3, characterized in that: A second pressure plate is also provided on the side of the baffle away from the vertical side wall of the shell. The cross-section of the second pressure plate is L-shaped. A second protective plate is provided between the second pressure plate and the baffle. The outer end of the second protective plate is arranged obliquely, and the inclination direction is away from the vertical side wall of the shell. The outer end of the second protective plate is close to the screw conveying shaft.

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