Rotary sealing structure of upper support shaft body of continuous extrusion type evaporator

Abstract

The utility model discloses an upper support shaft body rotary sealing structure of a continuous extrusion type evaporator, which comprises an upper outer shaft seat, a lower gear type shaft seat arranged at the bottom end of the upper outer shaft seat, an upper outer shaft sleeve arranged at the top end of the upper outer shaft seat, a lower shaft seat arranged below the lower gear type shaft seat, and a main shaft body arranged at the central position of the top end of the lower shaft seat. A first inner ring is arranged on the outer side of the main shaft body below the nut plate; a second inner ring is arranged on the outer side of the main shaft body below the first inner ring; a second outer ring is arranged in the upper outer shaft seat on the outer side of the second inner ring; and a first outer ring is arranged in the upper outer shaft sleeve on the outer side of the first inner ring. According to the rotary sealing structure, the convenience of the rotary sealing structure during overhaul and maintenance is improved, the sealing performance of the rotary sealing structure during use is guaranteed, and the service life of the rotary sealing structure is prolonged.

Description

Technical Field

[0001] The utility model relates to the technical field of evaporators, in particular to an upper support shaft body rotary sealing structure of a continuous extrusion type evaporator. Background Art

[0002] During the operation of the continuous extrusion evaporator, the rotary seal of the shaft is the key to ensure the stable operation of the equipment. However, the existing sealing structure often has problems such as unsatisfactory sealing effect and easy leakage, especially in the working environment of high temperature, high pressure and corrosive media. These problems are particularly prominent. Therefore, it is particularly important to develop a new type of efficient and reliable rotary seal structure.

[0003] Reference announcement number CN203823062U is a rotary slender shaft sealing structure, which includes a rotary slender shaft in a spiral groove body, a contact surface of the spiral groove body and the rotary slender shaft forming a groove, a copper sleeve is provided on the rotary slender shaft, the lower end of the copper sleeve is in the groove, and the lower end of the copper sleeve forms a seal with the spiral groove body through a rotary combined sealing structure 1; an outer support body is provided on the upper side of the spiral groove body through bolts, and a multi-pass rotary combined sealing structure 2 is provided between the outer support body and the sleeve; the parts of the rotary combined sealing structures 1 and 2 that contact the sealed surface are dynamic sealing rings , a static O-ring is fitted inside the dynamic sealing ring. In the utility model, the rotating slender shaft and the outer support body together form an extended guide, which stabilizes the rotation of the rotating slender shaft and prevents it from excessive vibration, thereby protecting the rotating slender shaft; the use of a multi-channel sealing structure ensures the sealing effect; the wear of the rotating slender shaft is solved and the sealing effect is improved. According to the above, although the rotary sealing structure can be well applied, it is usually not convenient to disassemble it, and it is not easy to inspect and maintain the rotary sealing structure, and it needs to be improved. Utility Model Content

[0004] The purpose of the utility model is to provide an upper support shaft rotary seal structure for a continuous extrusion evaporator, so as to solve the problem in the above background technology that although the rotary seal structure can be well applied, it is usually not convenient to disassemble it, and it is not easy to inspect and maintain the rotary seal structure.

[0005] To achieve the above object, the present utility model provides the following technical solution: A rotary seal structure for the upper support shaft body of a continuous extrusion evaporator, including an upper outer shaft seat, a lower gear-type shaft seat is installed at the bottom end of the upper outer shaft seat, an upper outer shaft sleeve is provided at the top end of the upper outer shaft seat, a lower shaft seat is provided below the lower gear-type shaft seat, a main shaft body is provided at the central position of the top end of the lower shaft seat, a lower sealing disc is installed at the bottom end inside the lower shaft seat, an external thread is provided on the outer wall above the main shaft body, a nut disc is threadedly installed on the outer wall of the external thread, a first inner ring is provided outside the main shaft body below the nut disc, a second inner ring is provided outside the main shaft body below the first inner ring, a second outer ring is provided inside the upper outer shaft seat outside the second inner ring, and a first outer ring is provided inside the upper outer shaft sleeve outside the first inner ring.

[0006] Preferably, equidistant first positioning holes are provided at the edge position of the top end of the upper outer shaft seat, and equidistant third positioning holes are provided at the edge position of the top end of the lower shaft seat. Through the settings of the third positioning holes and the first positioning holes, the rotary seal structure can be positioned and installed.

[0007] Preferably, equidistant second positioning holes are provided at the edge position of the bottom end of the lower shaft seat, and a plurality of fourth positioning holes are provided at the edge position of the bottom end of the lower sealing disc. Through the settings of the second positioning holes and the fourth positioning holes, the rotary seal structure can be positioned and installed.

[0008] Preferably, equidistant outer disc grooves are provided on the outer wall of the nut disc, and the included angle between adjacent outer disc grooves is ninety degrees. Through the settings of the outer disc grooves, the nut disc can be screwed.

[0009] Preferably, a first upper dust-proof ring is provided on the inner wall at the upper end of the first outer ring, and a first lower dust-proof ring is provided on the inner wall at the lower end of the first outer ring. Through the settings of the first upper dust-proof ring and the first lower dust-proof ring, the chamber between the first outer ring and the first inner ring can be sealed and dust-proofed.

[0010] Preferably, a second upper dust-proof ring is provided on the inner wall at the upper end of the second outer ring, and a second lower dust-proof ring is provided on the inner wall at the lower end of the second outer ring. Through the settings of the second lower dust-proof ring and the second upper dust-proof ring, the chamber between the second outer ring and the second inner ring can be sealed and dust-proofed.

[0011] Compared with the prior art, the beneficial effects of the present utility model are: The rotary seal structure for the upper support shaft body of the continuous extrusion evaporator not only improves the convenience during the overhaul and maintenance of the rotary seal structure, but also ensures the sealing performance during the use of the rotary seal structure, and moreover extends the service life of the rotary seal structure;

[0012] (1) By turning the nut plate, the nut plate rotates and slides on the outside of the main shaft body at the external thread position, so as to screw out the nut plate from the outer wall of the main shaft body, and then the lower shaft seat can be pulled downward to detach the main shaft body from the outside of the upper outer shaft seat, the lower gear shaft seat and the upper outer shaft sleeve, thereby achieving the purpose of disassembling the rotary seal structure, and improving the convenience during the overhaul and maintenance of the rotary seal structure;

[0013] (2) Through the settings of the upper outer shaft seat, the lower gear shaft seat and the upper outer shaft sleeve, the main shaft body is shielded and protected from the outside, and the lower sealing plate can shield and protect the main shaft body from below, and the settings of related components such as the first outer ring can shield and protect the outer wall of the main shaft body from above, thus ensuring the sealing performance of the rotary seal structure during use;

[0014] (3) Through the settings of the first upper dust-proof ring and the first lower dust-proof ring, the chamber between the first outer ring and the first inner ring is sealed and dust-proof from above and below, and the settings of the second upper dust-proof ring and the second lower dust-proof ring can seal and dust-proof the chamber between the second outer ring and the second inner ring, thereby effectively reducing the phenomenon that dust flows into the chambers between the first outer ring and the first inner ring and between the second outer ring and the second inner ring and causes erosion and damage to them, thus extending the service life of the rotary seal structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic top view structure diagram of the present utility model;

[0016] Figure 2 It is a schematic bottom view structure diagram of the present utility model;

[0017] Figure 3 It is a schematic structure diagram of the main shaft body of the present utility model;

[0018] Figure 4 It is a schematic structure diagram of the first outer ring and the second outer ring of the present utility model.

[0019] In the figure: 1. Upper outer shaft seat; 101. First positioning hole; 2. Lower gear shaft seat; 3. Upper outer shaft sleeve; 4. Main shaft body; 5. External thread; 6. Nut plate; 7. Outer disc groove; 8. Lower shaft seat; 801. Second positioning hole; 802. Third positioning hole; 9. Lower sealing plate; 901. Fourth positioning hole; 10. First outer ring; 11. Second outer ring; 12. First upper dust-proof ring; 13. Second upper dust-proof ring; 14. First inner ring; 15. First lower dust-proof ring; 16. Second inner ring; 17. Second lower dust-proof ring. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0020] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0021] Please refer to Figures 1-4 , an embodiment provided by the present utility model: a rotary seal structure for the upper support shaft body of a continuous extrusion evaporator, including an upper outer shaft seat 1. Equally spaced first positioning holes 101 are provided at the edge position of the top end of the upper outer shaft seat 1, and equally spaced third positioning holes 802 are provided at the edge position of the top end of the lower shaft seat 8;

[0022] During use, through the settings of the third positioning holes 802 and the first positioning holes 101, the rotary seal structure can be positioned and installed;

[0023] A lower gear shaft seat 2 is installed at the bottom end of the upper outer shaft seat 1. An upper outer shaft sleeve 3 is provided at the top end of the upper outer shaft seat 1. A lower shaft seat 8 is provided below the lower gear shaft seat 2. Equally spaced second positioning holes 801 are provided at the edge position of the bottom end of the lower shaft seat 8, and a plurality of fourth positioning holes 901 are provided at the edge position of the bottom end of the lower seal disk 9;

[0024] During use, through the settings of the second positioning holes 801 and the fourth positioning holes 901, the rotary seal structure can be positioned and installed;

[0025] A main shaft body 4 is provided at the center position of the top end of the lower shaft seat 8. A lower seal disk 9 is installed at the bottom end inside the lower shaft seat 8. An external thread 5 is provided on the outer wall above the main shaft body 4. A nut disk 6 is threadedly installed on the outer wall of the external thread 5. Equally spaced outer disk grooves 7 are provided on the outer wall of the nut disk 6, and the included angle between adjacent outer disk grooves 7 is ninety degrees;

[0026] During use, through the setting of the outer disk grooves 7, the nut disk 6 can be screwed;

[0027] A first inner ring 14 is provided on the outside of the main shaft body 4 below the nut disk 6. A second inner ring 16 is provided on the outside of the main shaft body 4 below the first inner ring 14. A second outer ring 11 is provided inside the upper outer shaft seat 1 outside the second inner ring 16. A second upper dust-proof ring 13 is provided on the inner wall at the upper end of the second outer ring 11, and a second lower dust-proof ring 17 is provided on the inner wall at the lower end of the second outer ring 11;

[0028] During use, through the settings of the second lower dust-proof ring 17 and the second upper dust-proof ring 13, the chamber between the second outer ring 11 and the second inner ring 16 can be sealed and dust-proofed;

[0029] Inside the upper outer shaft sleeve 3 on the outside of the first inner ring 14, a first outer ring 10 is provided. On the inner wall at the upper end of the first outer ring 10, a first upper dust-proof ring 12 is provided, and on the inner wall at the lower end of the first outer ring 10, a first lower dust-proof ring 15 is provided.

[0030] During use, through the arrangement of the first upper dust-proof ring 12 and the first lower dust-proof ring 15, the chamber between the first outer ring 10 and the first inner ring 14 can be sealed and dust-proofed.

[0031] When the embodiment of the present application is in use, first, through the arrangement of the upper outer shaft seat 1, the lower gear-type shaft seat 2, and the upper outer shaft sleeve 3, the main shaft body 4 is shielded and protected from the outside. The arrangement of the lower sealing disc 9 can shield and protect the main shaft body 4 from below, and the arrangement of the first outer ring 10 and other related components can shield and protect the outer wall of the main shaft body 4 from above to ensure the sealing performance of the overall rotating seal structure. Then, through the arrangement of the first upper dust-proof ring 12 and the first lower dust-proof ring 15, the chamber between the first outer ring 10 and the first inner ring 14 is sealed and dust-proofed from above and below. The arrangement of the second upper dust-proof ring 13 and the second lower dust-proof ring 17 can seal and dust-proof the chamber between the second outer ring 11 and the second inner ring 16, thereby effectively reducing the phenomenon that dust flows into the chambers between the first outer ring 10 and the first inner ring 14 and between the second outer ring 11 and the second inner ring 16 and causing erosion and damage to them. Finally, by turning the nut disc 6, the nut disc 6 rotates and slides on the outside of the main shaft body 4 at the position of the external thread 5, so as to screw out the nut disc 6 from the outer wall of the main shaft body 4. Then, the lower shaft seat 8 can be pulled downward to disassemble the main shaft body 4 from the outside of the upper outer shaft seat 1, the lower gear-type shaft seat 2, and the upper outer shaft sleeve 3, making it easy to disassemble and maintain the rotating seal structure, thus completing the use of the rotating seal structure.

Claims

1. A rotary sealing structure for the upper support shaft body of a continuous extrusion evaporator, characterized in that: It includes an upper outer shaft seat (1). A lower gear-type shaft seat (2) is installed at the bottom end of the upper outer shaft seat (1). An upper outer shaft sleeve (3) is provided at the top end of the upper outer shaft seat (1). A lower shaft seat (8) is provided below the lower gear-type shaft seat (2). A main shaft body (4) is provided at the central position of the top end of the lower shaft seat (8). A lower sealing disc (9) is installed at the bottom end inside the lower shaft seat (8). An external thread (5) is provided on the outer wall above the main shaft body (4). A nut disc (6) is threadedly installed on the outer wall of the external thread (5). A first inner ring (14) is provided on the outside of the main shaft body (4) below the nut disc (6). A second inner ring (16) is provided on the outside of the main shaft body (4) below the first inner ring (14). A second outer ring (11) is provided inside the upper outer shaft seat (1) outside the second inner ring (16). A first outer ring (10) is provided inside the upper outer shaft sleeve (3) outside the first inner ring (14).

2. The upper support shaft body rotation sealing structure of a continuous extrusion evaporator according to claim 1, characterized in that: Equidistantly spaced first positioning holes (101) are provided at the edge position of the top end of the upper outer shaft seat (1). Equidistantly spaced third positioning holes (802) are provided at the edge position of the top end of the lower shaft seat (8).

3. The rotary seal structure of the upper support shaft body of a continuous extrusion evaporator according to claim 1, characterized in that: Equidistantly spaced second positioning holes (801) are provided at the edge position of the bottom end of the lower shaft seat (8). A number of fourth positioning holes (901) are provided at the edge position of the bottom end of the lower sealing disc (9).

4. The rotary seal structure of the upper support shaft body of a continuous extrusion evaporator according to claim 1, characterized in that: Equidistantly spaced outer disc grooves (7) are provided on the outer wall of the nut disc (6), and the included angle between adjacent outer disc grooves (7) is ninety degrees.

5. The rotary seal structure of the upper support shaft body of a continuous extrusion evaporator according to claim 1, characterized in that: A first upper dust-proof ring (12) is provided on the inner wall at the upper end of the first outer ring (10). A first lower dust-proof ring (15) is provided on the inner wall at the lower end of the first outer ring (10).

6. The upper support shaft body rotation sealing structure of a continuous extrusion evaporator according to claim 1, characterized in that: A second upper dust-proof ring (13) is provided on the inner wall at the upper end of the second outer ring (11). A second lower dust-proof ring (17) is provided on the inner wall at the lower end of the second outer ring (11).

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