Spiral tail assembly structure

Abstract

The utility model provides a spiral tail assembly structure which comprises a shaft sleeve connected to a spiral tail shaft in a threaded mode, a shaft sleeve sealing base is arranged on the outer side of the shaft sleeve, the tail end of the shaft sleeve sealing base is fixedly connected with the head end of a connecting base, the connecting base is in a sleeve shape, the tail end of the connecting base is connected with a sealing seat on body padding, and a gap exists between the connecting base and the spiral tail shaft. And the shaft sleeve sealing base, the connecting base and the body filler upper sealing seat are arranged on a rack at the spiral tail part of the elevator and are coaxial with a spiral tail shaft. The shaft sleeve and the shaft sleeve sealing base are installed on the spiral tail shaft, meanwhile, sealing cavity protection is formed for the spiral tail shaft through the connecting base and the sealing base on the body filler, the problem that an existing structure is prone to causing shaft abrasion is effectively solved, meanwhile, leakage of black liquor is avoided, and the purposes of reducing frequent overhaul and controlling the maintenance cost are achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of installation of black liquor collecting spiral elevators, and particularly relates to a spiral tail assembly structure. Background Art

[0002] At present, during the operation of a spiral elevator, the design mode of the spiral tail is a packing seal plus a bearing seat. In actual operation, there is no bushing protection for the packing seal position at the tail of the spiral elevator. When the packing seal fails, it is extremely easy to cause medium leakage, which is conducted to the bearing seat through the shaft, resulting in bearing damage. Moreover, with the increase of the operation cycle, inevitable wear occurs between the packing and the shaft, further affecting the service life of the packing seal, increasing the maintenance frequency of the spiral elevator, rising the maintenance cost and unable to meet the demand of stable production, thus affecting the normal production of the workshop. Summary of the Utility Model

[0003] The purpose of the utility model is to provide a spiral tail assembly structure to achieve the purpose of reducing frequent maintenance of bearings and controlling maintenance costs.

[0004] The technical solution adopted by the utility model is a spiral tail assembly structure, which includes a bushing connected to the spiral tail shaft in a clearance fit. An outer side of the bushing is provided with a bushing seal base. A tail end of the bushing seal base is fixedly connected to a head end of a connecting base. The connecting base is in a sleeve shape and its tail end is connected to an upper sealing seat of the body packing. There is a gap between the connecting base and the spiral tail shaft. The bushing seal base, the connecting base and the upper sealing seat of the body packing are installed on the frame of the spiral tail of the elevator and are coaxial with the spiral tail shaft.

[0005] Preferably, both ends of the connecting base are respectively bolt-connected to the bushing seal base and the upper sealing seat of the body packing through L-shaped rabbets.

[0006] Preferably, a cooling water interface is provided at the center of the head end of the bushing seal base.

[0007] Compared with the prior art, the beneficial effect of the utility model is that, on the basis of the existing basic structure, the packing and the bearing seat at the tail of the spiral elevator are removed, a bushing and a bushing seal base are installed on the spiral tail shaft, and at the same time, a sealing cavity protection is formed for the spiral tail shaft by using the connecting base and the upper sealing seat of the body packing, effectively solving the problem that the existing structure is easy to cause shaft wear, and at the same time avoiding the leakage of black liquor, achieving the purpose of reducing frequent maintenance and controlling maintenance costs. In addition, a cooling water interface is arranged at the center of the bushing seal base to connect with cold water flushing to avoid damage caused by high temperature generated by friction between the spiral tail shaft and the bushing. Brief Description of the Drawings

[0008] Figure 1 It is a schematic structural diagram of the utility model;

[0009] Markings in the figure: 1. Bush, 2. Cooling water interface, 3. Bush seal seat, 4. Connecting base, 5. Spiral tail shaft, 6. L-shaped stop, 7. Upper seal seat of body packing. Specific implementation mode

[0010] The following will further explain and illustrate the present utility model in conjunction with the accompanying drawings of the specification, so as to be better understood by those skilled in the art.

[0011] Embodiment 1

[0012] As Figure 1 shown, a spiral tail assembly structure includes a bush 1, a bush seal seat 3, a connecting base 4 and an upper seal seat 7 of body packing.

[0013] The length and size of the above-mentioned bush 1 are determined according to the length and diameter of the spiral tail shaft, and it is installed on the spiral tail shaft 2 with a clearance fit. The bush seal base 3 is installed on the outside of the bush 1. The tail end of the bush seal base 3 is fixedly connected to the head end of the connecting base 4. The connecting base 4 is in a sleeve shape and is sleeved on the spiral tail shaft 5. The tail end of the connecting base 4 is connected to the upper seal seat 7 of body packing. There is a clearance between the connecting base 4 and the spiral tail shaft 5. The bush seal base 3, the connecting base 4 and the upper seal seat 7 of body packing are installed on the frame of the hoist spiral tail and are coaxial with the spiral tail shaft 5.

[0014] Furthermore, both ends of the above-mentioned connecting base 4 are respectively bolt-connected to the bush seal base 3 and the upper seal seat 7 of body packing through the L-shaped stop 6, effectively ensuring the axial concentricity and sealing performance.

[0015] The head end center of the bush seal base 3 is provided with a cooling water interface 2 for connecting cold water flushing to avoid damage caused by high temperature generated by the friction between the spiral tail shaft 5 and the wear-resistant bush 1.

[0016] The wear-resistant bush assembly is made of conventional pipes and plates, is suitable for installation on medium and small-sized spirals, is convenient for installation and maintenance, is wear-resistant and durable, has a low replacement cost, and can save a large amount of maintenance time.

[0017] The above-described embodiments are only descriptions of the preferred implementation modes of the present utility model, and do not limit the scope of the present utility model. Without departing from the design spirit and principles of the present utility model, various deformations and improvements made by those skilled in the art to the technical solutions of the present utility model shall all fall within the protection scope determined by the claims of the present utility model.

Claims

1. A spiral tail assembly structure, characterized in that, It includes a bushing (1) installed on a spiral tail shaft (5) with a clearance fit. The outer side of the bushing (1) is connected to a bushing seal base (3). The tail end of the bushing seal base (3) is fixedly connected to the head end of a connecting base (4). The connecting base (4) is in a sleeve shape, and the tail end is fixedly connected to an upper seal seat (7) of a body packing. There is a clearance between the connecting base (4) and the spiral tail shaft (5). The bushing seal base (3), the connecting base (4), and the upper seal seat (7) of the body packing are installed on the frame at the spiral tail of the elevator and are coaxial with the spiral tail shaft (5).

2. The spiral tail assembly structure according to claim 1, characterized in that, Both ends of the connecting base (4) are bolt - connected to the bushing seal base (3) and the upper seal seat (7) of the body packing respectively through L - shaped spigots (6).

3. A spiral tail assembly structure according to claim 1, characterized in that, A cooling water interface (2) is provided at the center of the head end of the bushing seal base (3).

Images