Protective device for spiral shaft head of mechanical pulp

Abstract

A protective device for a spiral shaft head of a mechanical pulp relates to the technical field of protective devices and comprises a shaft head, a shaft sleeve is sleeved on the shaft head, a bearing is sleeved on an outer ring of the shaft sleeve, the bearing is supported on a base through a bearing seat, a tensioning head is movably arranged on one side of the base along the axial direction of the shaft sleeve, and the tensioning head is horizontally and rotatably arranged. The tensioning head abuts against the end plate. The utility model solves the problems in the prior art that the bearing on the non-transmission side of the mechanical pulp feeding and conveying screw is frequently damaged on the machine, the shaft head is abraded, the purchase cost of spare parts is increased, the production is restricted, and the production operation is seriously influenced.

Description

Technical Field

[0001] The utility model relates to the technical field of protection devices, in particular to a protection device for a mechanical pulp screw shaft head. Background Art

[0002] Papermaking is an important invention of ancient Chinese working people, which is divided into two forms: machine-made and hand-made. Handmade papermaking is a method of making paper by hand without using machinery or only using simple machinery. It mainly includes soaking materials, boiling materials, washing materials, bleaching in the sun, beating materials, fishing for paper, and squeezing and baking paper, etc. Its papermaking is more environmentally friendly and will not cause great environmental pollution. Machine-made papermaking is carried out continuously on a paper machine. The pulp suitable for the quality of the paper is diluted with water to a certain concentration, and is initially dehydrated in the wire section of the paper machine to form a wet paper sheet, then dehydrated by pressing, and then dried into paper.

[0003] The non-driving side shaft head of the existing mechanical pulp feeding and conveying screw has a shaft diameter of 100, and the bearing model 22220 is adopted.

[0004] With the use of existing devices including the above patents, the deficiencies of this technology have gradually emerged, mainly manifested in the following aspects:

[0005] The bearings on the non-driving side of the mechanical pulp feeding and conveying screw are frequently damaged during operation, resulting in shaft head wear. At the same time, the spare part procurement cost is increased, which restricts production and seriously affects production operation.

[0006] To sum up, it is obvious that there are inconveniences and defects in the existing technology in actual use, so it is necessary to improve it. Content of the Utility Model

[0007] Aiming at the defects in the existing technology, the utility model solves the problems that the bearings on the non-driving side of the mechanical pulp feeding and conveying screw in the traditional technology are frequently damaged during operation, resulting in shaft head wear. At the same time, the spare part procurement cost is increased, which restricts production and seriously affects production operation.

[0008] To solve the above problems, the utility model provides the following technical solutions:

[0009] A protection device for a mechanical pulp screw shaft head, including a shaft head, a shaft sleeve is sleeved on the shaft head, a bearing is sleeved on the outer ring of the shaft sleeve, and the bearing is supported on a base by a bearing seat.

[0010] A tension head is movably arranged along the axial direction of the shaft sleeve on one side of the base, the tension head is horizontally rotatably arranged, one end of the shaft sleeve is fixedly connected with an end plate, and the tension head abuts against the end plate.

[0011] As an optimized scheme, the tension head is conical, and a positioning groove matching the tension head is opened at the center of the end plate.

[0012] As an optimized solution, a tensioning rod moving horizontally coaxially is arranged on one side of the tensioning head, and an elastic tensioning assembly is arranged between the tensioning rod and the tensioning head.

[0013] As an optimized solution, a turntable is fixedly connected coaxially to the back surface of the tensioning head, and the rotating end of the turntable is fixedly connected to the elastic tensioning assembly.

[0014] As an optimized solution, the elastic tensioning assembly includes a sleeve fixedly connected horizontally to the end of the tensioning rod. A support column is arranged to slide horizontally in the sleeve. The outer end of the support column is fixedly connected to the rotating end of the turntable. A compression spring is sleeved on the support column, and both ends of the compression spring abut against the turntable and the sleeve respectively.

[0015] As an optimized solution, a support plate is fixedly connected vertically to the base, a threaded hole is formed in the support plate, and an external thread matching the threaded hole is arranged on the peripheral wall of the tensioning rod.

[0016] As an optimized solution, a turning handle is fixedly connected to the other end of the tensioning rod.

[0017] As an optimized solution, a locking nut is also threadedly connected to the tensioning rod, and the locking nut abuts against the support plate.

[0018] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0019] The non-driving side shaft head of the conveying screw is transformed by using machine repair machining turning and a newly machined shaft sleeve. After the transformation, the equipment runs smoothly. At the same time, the procurement cost of the equipment shaft head is saved. The shaft sleeve is replaced regularly to ensure the normal operation of production;

[0020] By setting the tensioning head to abut against the shaft sleeve, the center positioning performance of the shaft head can be improved under normal use, the radial runout can be reduced, and the service life of the bearing is prolonged;

[0021] By rotating the tensioning rod, the tensioning force on the tensioning head can be adjusted to make it press against the shaft sleeve, so as to reduce the axial runout of the shaft head, further improve the service life of the bearing, and reduce the production cost;

[0022] By setting the tensioning head to abut against the shaft sleeve, the auxiliary bearing is realized to support the shaft sleeve. Even if the bearing breaks down, the tensioning head can also play a certain supporting role, improving the stability of the support and the stability during the working process. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for use in the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally identified by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0024] Figure 1 It is a schematic structural diagram of the present invention.

[0025] In the figure: 1 - shaft head; 2 - shaft sleeve; 3 - bearing; 4 - bearing seat; 5 - end plate; 6 - tensioning head; 7 - turntable; 8 - tensioning rod; 9 - sleeve; 10 - support column; 11 - compression spring; 12 - lock nut; 13 - turning handle; 14 - support plate. Specific Embodiments

[0026] The following will describe in detail the embodiments of the technical solutions of the present invention in conjunction with the drawings. The following embodiments are only used to more clearly illustrate the technical solutions of the present invention, so they are only examples and cannot be used to limit the protection scope of the present invention.

[0027] As Figure 1 shown, a mechanical pulp screw shaft head protection device includes a shaft head 1, a shaft sleeve 2 is sleeved on the shaft head 1, a bearing 3 is sleeved on the outer circle of the shaft sleeve 2, and the bearing 3 is supported on the base by a bearing seat 4.

[0028] A tensioning head 6 is arranged on one side of the base to move axially along the shaft sleeve 2, the tensioning head 6 is horizontally rotatably arranged, one end of the shaft sleeve 2 is fixedly connected with an end plate 5, and the tensioning head 6 abuts against the end plate 5.

[0029] The tensioning head 6 is conically arranged, and a positioning groove matching the tensioning head 6 is opened at the center of the end plate 5.

[0030] A horizontally moving tensioning rod 8 is coaxially arranged on one side of the tensioning head 6, and an elastic tensioning component is arranged between the tensioning rod 8 and the tensioning head 6.

[0031] The back of the tensioning head 6 is coaxially fixedly connected with a turntable 7, and the rotating end of the turntable 7 is fixedly connected with the elastic tensioning component.

[0032] The elastic tensioning component includes a sleeve 9 horizontally fixedly connected to the end of the tensioning rod 8, a support column 10 is horizontally slidably arranged in the sleeve 9, the outer end of the support column 10 is fixedly connected with the rotating end of the turntable 7, a compression spring 11 is sleeved on the support column 10, and both ends of the compression spring 11 abut against the turntable 7 and the sleeve 9 respectively.

[0033] A support plate 14 is vertically fixedly connected to the base, a threaded hole is opened on the support plate 14, and an external thread matching the threaded hole is arranged on the peripheral wall of the tensioning rod 8.

[0034] The other end of the tension rod 8 is fixedly connected with a rotary handle 13.

[0035] A locking nut 12 is also threadedly connected to the tension rod 8, and the locking nut 12 abuts against the support plate 14.

[0036] The working principle of this device is as follows:

[0037] The non-driving side shaft head 1 of the conveying screw is transformed by using machine repair machining turning and a newly machined shaft sleeve 2. After the transformation, the equipment runs smoothly. At the same time, the procurement cost of the equipment shaft head 1 is saved. The shaft sleeve 2 is replaced regularly to ensure the normal operation of production;

[0038] By setting the tension head 6 to abut against the shaft sleeve 2, the center positioning performance of the shaft head 1 can be improved under normal use, the radial runout can be reduced, and the service life of the bearing 3 is extended;

[0039] By rotating the tension rod 8, the tension force on the tension head 6 can be adjusted so that it presses against the shaft sleeve 2, reducing the axial movement of the shaft head 1, further improving the service life of the bearing 3, and reducing the production cost;

[0040] By setting the tension head 6 to abut against the shaft sleeve 2, the auxiliary bearing 3 is enabled to support the shaft sleeve 2. Even if the bearing 3 breaks down, the tension head 6 can still play a certain supporting role, improving the stability of the support and the stability during the working process.

[0041] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, those of ordinary skill in the art should understand that: they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some or all of the technical features; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present invention, and they should all be covered by the scope of the claims and the description of the present invention.

Claims

1. Mechanical propeller screw shaft head protection device, characterized by: The invention comprises a shaft head (1), a shaft sleeve (2) is mounted on the shaft head (1), a bearing (3) is mounted on the outer ring of the shaft sleeve (2), and the bearing (3) is supported on a base by a bearing seat (4). A tensioning head (6) is provided on one side of the base for axial movement along the shaft sleeve (2); the tensioning head (6) is provided for horizontal rotation; an end plate (5) is fixedly connected to one end of the shaft sleeve (2); the tensioning head (6) abuts against the end plate (5).

2. The mechanical propeller screw shaft head protection device according to claim 1 is characterized in that: The tensioning head (6) is arranged in a conical shape, and a positioning groove matching the tensioning head (6) is provided at the center of the end plate (5).

3. The mechanical propeller screw shaft head protection device according to claim 2 is characterized in that: A tensioning rod (8) that moves horizontally is coaxially arranged on one side of the tensioning head (6), and an elastic tensioning component is arranged between the tensioning rod (8) and the tensioning head (6).

4. The mechanical propeller screw shaft head protection device according to claim 3 is characterized in that: A turntable (7) is coaxially fixedly connected to the back of the tensioning head (6), and the rotating end of the turntable (7) is fixedly connected to the elastic tensioning assembly.

5. The mechanical propeller screw shaft head protection device according to claim 4 is characterized in that: The elastic tensioning assembly comprises a sleeve (9) horizontally fixed to the end of the tensioning rod (8), a support column (10) is horizontally slidably arranged in the sleeve (9), the outer end of the support column (10) is fixed to the rotating end of the turntable (7), and a compression spring (11) is mounted on the support column (10), and the two ends of the compression spring (11) are respectively abutted against the turntable (7) and the sleeve (9).

6. The mechanical propeller screw shaft head protection device according to claim 5 is characterized in that: A support plate (14) is vertically fixed to the base, a threaded hole is provided on the support plate (14), and an external thread matching the threaded hole is provided on the peripheral wall of the tensioning rod (8).

7. The mechanical propeller screw shaft head protection device according to claim 6 is characterized by: The other end of the tensioning rod (8) is fixedly connected with a turning handle (13).

8. The mechanical propeller screw shaft head protection device according to claim 7 is characterized in that: The tension rod (8) is also threadedly connected with a locking nut (12), and the locking nut (12) abuts against the support plate (14).

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