CN217421525U

CN217421525U - Shaft seal device of oil-free screw machine

Info

Publication number: CN217421525U
Application number: CN202221322768.7U
Authority: CN
Inventors: 纪睿
Original assignee: Tianjin Xingchi Refrigeration Technology Co ltd
Current assignee: Tianjin Xingchi Refrigeration Technology Co ltd
Priority date: 2022-05-30
Filing date: 2022-05-30
Publication date: 2022-09-13
Anticipated expiration: 2032-05-30

Abstract

The utility model discloses an there is not bearing seal device of oil screw machine, including the shell, still include cooling assembly and dismantlement subassembly, the dismantlement subassembly comprises spacing ring, rubber, bolt, support ring and supporting disk, the mounting groove has been seted up at the shell top, the inside demountable installation of mounting groove has the spacing ring, the bolt runs through the shell and inserts in the spacing ring, rubber is installed to the spacing ring bottom, the support ring is installed to the bottom in the shell, the supporting disk is installed at the support ring top, the supporting disk is located the rubber bottom. The utility model discloses a dismantlement subassembly is convenient for change rubber fast, through the cooling subassembly, reduces the temperature on shell surface, the normal operating of the oilless screw rod machine of being convenient for.

Description

Shaft seal device of oil-free screw machine

Technical Field

The utility model relates to a screw rod machine technical field, in particular to there is not bearing seal device of oil screw rod machine.

Background

The shaft seal device is used for effectively isolating a bearing lubricating oil system from a working cavity and is an important part of an oil-free screw machine. The shaft seal device of the existing oil-free screw machine is generally formed by combining a front seal and a main seal, wherein the front seal generally adopts labyrinth seal or carbon ring seal, and the main seal adopts mechanical seal using oil as sealing medium or dry gas seal using gas as sealing medium.

Patent No. cn201710900718.x discloses a shaft seal device of an oil-free screw machine, which comprises a front seal, a main seal, an isolation air seal and a bearing, wherein the front seal, the main seal, the isolation air seal and the bearing are mounted on a rotor of the oil-free screw machine. The main seal is positioned between the front seal and the bearing; the isolation air seal is positioned between the main seal and the bearing; the main seal is a double-end mechanical seal; a water injection hole and a water return hole which penetrate through the side wall of the shell are respectively arranged at the positions of the shell of the oilless screw machine corresponding to the double-end-surface mechanical seal; an isolation air inlet hole penetrating through the side wall of the shell is formed in the position, corresponding to the isolation air seal, of the shell of the oil-free screw machine, an isolation air guide hole penetrating through the side wall of the isolation air seal is formed in the side wall of the isolation air seal, and isolation air filled into the isolation air inlet hole can enter the isolation air guide hole; and a sewage discharge hole penetrating through the side wall of the shell is formed in the shell of the oil-free screw machine between the mechanical seal and the isolation air seal. The invention can not pollute the working medium steam in the working cavity of the screw machine and can not influence the service life of the rotor bearing.

The shaft seal device of the oil-free screw machine has the following defects: after the internal rubber is damaged, the replacement is inconvenient; when the oil-free screw machine runs, a shaft seal device is not cooled, and the normal running of the oil-free screw machine is influenced.

SUMMERY OF THE UTILITY MODEL

A primary object of the present invention is to provide an oil-free screw machine shaft seal device, which can effectively solve the problems of the prior art.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides an oilless screw rod machine's bearing seal device, includes the shell, still includes cooling subassembly and dismantlement subassembly, the dismantlement subassembly comprises spacing ring, rubber, bolt, support ring and supporting disk, the mounting groove has been seted up at the shell top, the inside demountable installation of mounting groove has the spacing ring, the bolt runs through the shell and plugs in the spacing ring, rubber is installed to the spacing ring bottom, the support ring is installed to the bottom in the shell, the supporting disk is installed at the support ring top, the supporting disk is located the rubber bottom.

Furthermore, the cooling assembly consists of a condensate pipe, an adjusting rod and a limiting shaft, the condensate pipe is installed on the surface of the shell, the adjusting rod is installed on the surface of the shell, and the limiting shaft penetrates through the bottom of the adjusting rod and is inserted into the shell; through the cooling subassembly, reduce the temperature on shell surface, be convenient for do not have the normal operating of oily screw rod machine.

Furthermore, a thread groove is formed in the top of the shell, threads are carved on the outer wall of the bolt, and the threads are matched with the thread groove; adjusting the bolt, inserting the bolt in the thread groove, and rotating the bolt in the thread groove to fix the limiting ring on the top of the shell.

Furthermore, the bottom of the limiting ring is provided with a limiting groove, and rubber is inserted in the limiting groove; the top of the rubber is inserted in the limiting groove, and the limiting groove limits the rubber.

Furthermore, a water tank is arranged in the shell, and a condensate pipe is arranged in the water tank; the condensed water pipe is inserted into the water tank and surrounds the surface of the shell, condensed water is injected into the condensed water pipe, and flows in the condensed water pipe to absorb heat on the surface of the shell and reduce the temperature on the surface of the shell.

Compared with the prior art, the utility model discloses following beneficial effect has:

1. the utility model discloses when using, install inside the shell with rubber (fluororubber is applicable to acidic liquid, EPDM is applicable to alkaline liquid and high temperature resistant), place at the support ring top bottom of rubber, the supporting disk supports rubber, install the spacing ring in the mounting groove, peg graft at the spacing inslot at the rubber top, the spacing groove is injectd rubber, adjusting bolt, peg graft at the thread groove with the bolt, the bolt rotates at the thread groove, make the spacing ring fix at the shell top, when needs are dismantled, take out the bolt from the thread groove earlier, take out the spacing ring from the mounting groove again, change rubber, through dismantling the subassembly, be convenient for change rubber fast.

2. The utility model discloses before the operation of oil-free screw rod machine, peg graft the condensate pipe in the basin, the condensate pipe encircles on the shell surface, promote the regulation pole, spacing axle is spacing to adjusting the pole bottom, it is circular motion around spacing axle to adjust the pole, the regulation pole carries on spacingly to the condensate pipe, pour into the comdenstion water into in the comdenstion water pipe, the comdenstion water flows in the comdenstion water pipe, absorb the heat on shell surface, reduce the temperature on shell surface, through the cooling subassembly, reduce the temperature on shell surface, the normal operating of the oil-free screw rod machine of being convenient for.

Drawings

Fig. 1 is a front view of a shaft seal device of an oil-free screw machine according to the present invention;

fig. 2 is a schematic diagram of rubber expansion of the shaft seal device of the oil-free screw machine of the present invention.

In the figure: 1. a housing; 2. mounting grooves; 3. a limiting ring; 4. rubber; 5. a thread groove; 6. a bolt; 7. a water tank; 8. a condensate pipe; 9. adjusting a rod; 10. a limiting shaft; 11. a cooling assembly; 12. a support ring; 13. a support disc; 14. a limiting groove; 15. and (6) disassembling the assembly.

Detailed Description

In order to make the technical means, creation features, achievement purposes and functions of the present invention easy to understand, the present invention is further described below with reference to the following embodiments.

As shown in fig. 1-2, an oil-free screw machine's shaft seal device, including shell 1, still include cooling subassembly 11 and detaching assembly 15, detaching assembly 15 comprises spacing ring 3, rubber 4, bolt 6, support ring 12 and supporting disk 13, mounting groove 2 has been seted up at shell 1 top, 2 inside demountable installation in mounting groove have spacing ring 3, bolt 6 runs through shell 1 and plug in spacing ring 3, rubber 4 is installed to spacing ring 3 bottom, support ring 12 is installed to the bottom in the shell 1, supporting disk 13 is installed at support ring 12 top, supporting disk 13 is located rubber 4 bottom.

The cooling assembly 11 consists of a condensate pipe 8, an adjusting rod 9 and a limiting shaft 10, the condensate pipe 8 is installed on the surface of the shell 1, the adjusting rod 9 is installed on the surface of the shell 1, and the limiting shaft 10 penetrates through the bottom of the adjusting rod 9 and is inserted into the shell 1; through cooling assembly 11, reduce the temperature on shell 1 surface, the normal operating of the oilless screw rod machine of being convenient for.

The top of the shell 1 is provided with a thread groove 5, the outer wall of the bolt 6 is provided with threads, and the threads are matched with the thread groove 5; adjusting the bolt 6, inserting the bolt 6 into the thread groove 5, and rotating the bolt 6 in the thread groove 5 to fix the limiting ring 3 at the top of the shell 1.

The bottom of the limiting ring 3 is provided with a limiting groove 14, and rubber 4 is inserted into the limiting groove 14; the top of the rubber 4 is inserted into the limit groove 14, and the limit groove 14 limits the rubber 4.

A water tank 7 is arranged in the shell 1, and a condensate pipe 8 is arranged in the water tank 7; the condensed water pipe 8 is inserted into the water tank 7, the condensed water pipe 8 surrounds the surface of the shell 1, condensed water is injected into the condensed water pipe 8, the condensed water flows in the condensed water pipe 8, heat on the surface of the shell 1 is absorbed, and the temperature on the surface of the shell 1 is reduced.

It should be noted that the utility model relates to a shaft seal device of oil-free screw machine, when using, install rubber 4 (fluororubber is suitable for acid liquid, EPDM is suitable for alkaline liquid and high temperature resistant) inside shell 1, the bottom of rubber 4 is placed on the top of support ring 12, support disc 13 supports rubber 4, install spacing ring 3 in mounting groove 2, the top of rubber 4 is inserted in spacing groove 14, spacing groove 14 limits rubber 4, adjusting bolt 6, bolt 6 is inserted in thread groove 5, bolt 6 rotates in thread groove 5, make spacing ring 3 fix on the top of shell 1, when needing to dismantle, take out bolt 6 from thread groove 5 first, then take out spacing ring 3 from mounting groove 2, change rubber 4, through dismantling subassembly 15, be convenient for change rubber 4 fast, before the operation of oil-free screw rod machine, peg graft condenser pipe 8 in basin 7, condenser pipe 8 surrounds on 1 surface of shell, promote regulation pole 9, spacing axle 10 is spacing to 9 bottoms of regulating rod, it is circular motion around spacing axle 10 to adjust pole 9, it is spacing to adjust pole 9 to carry out condenser pipe 8, inject the comdenstion water in condenser pipe 8, the comdenstion water flows in condenser pipe 8, absorb the heat on 1 surface of shell, reduce the temperature on 1 surface of shell, through cooling assembly 11, reduce the temperature on 1 surface of shell, be convenient for have oil-free screw rod machine's normal operating.

The basic principles and the main features of the invention and the advantages of the invention have been shown and described above. It should be understood by those skilled in the art that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only illustrative of the principles of the present invention, and that various changes and modifications may be made without departing from the spirit and scope of the present invention, and all such changes and modifications fall within the scope of the present invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.

Claims

1. The utility model provides an oil-free screw rod machine's bearing seal device, includes shell (1), its characterized in that still includes cooling subassembly (11) and dismantlement subassembly (15), dismantlement subassembly (15) comprise spacing ring (3), rubber (4), bolt (6), support ring (12) and supporting disk (13), mounting groove (2) have been seted up at shell (1) top, the inside demountable installation of mounting groove (2) has spacing ring (3), bolt (6) run through shell (1) and plug in spacing ring (3), rubber (4) are installed to spacing ring (3) bottom, bottom mounting has support ring (12) in shell (1), supporting disk (13) are installed at support ring (12) top, supporting disk (13) are located rubber (4) bottom.

2. An oil-free screw machine shaft seal device according to claim 1, characterized in that: the cooling assembly (11) is composed of a condensate pipe (8), an adjusting rod (9) and a limiting shaft (10), the condensate pipe (8) is installed on the surface of the shell (1), the adjusting rod (9) is installed on the surface of the shell (1), and the limiting shaft (10) penetrates through the bottom of the adjusting rod (9) and is inserted into the shell (1).

3. An oil-free screw machine shaft seal device according to claim 1, characterized in that: thread groove (5) have been seted up at shell (1) top, bolt (6) outer wall is carved with screw thread and thread groove (5) adaptation.

4. An oil-free screw machine shaft seal device according to claim 1, characterized in that: the bottom of the limiting ring (3) is provided with a limiting groove (14), and rubber (4) is inserted in the limiting groove (14).

5. An oil-free screw machine shaft seal device according to claim 1, characterized in that: a water tank (7) is arranged in the shell (1), and a condensate pipe (8) is arranged in the water tank (7).