A stirring device with liquid lubrication, cooling and sealing

Abstract

The present invention discloses a stirring device with liquid lubrication, cooling and sealing, which includes a stirrer, a liquid cooler, a liquid recovery tank and a booster pump; a stirrer outer cavity is arranged at the outer end of the stirrer; a liquid lubrication, cooling and sealing cavity is arranged at the inner side end of the stirrer; a double stationary ring seal inner and outer stationary ring group is arranged in the liquid lubrication, cooling and sealing cavity, two liquid channels are arranged on the outer shell of the liquid lubrication, cooling and sealing cavity, namely a sealing cavity liquid channel inlet and a sealing cavity liquid channel outlet, a seal stationary ring gland and a seal stationary ring gland sealing ring are arranged at the inner side end of the liquid lubrication, cooling and sealing cavity, and a second seal stationary ring is arranged at the inner side of the seal stationary ring gland. The present invention has the advantages of simple and compact structure, convenient installation, low cost, good sealing effect, etc.

Description

Technical Field

[0001] The present invention mainly relates to the field of stirring technology for muddy water mixtures and / or high mortar content, and particularly refers to a stirring device with liquid lubrication, cooling and sealing. Background Art

[0002] Currently, a sealed design is generally required for general stirring devices. However, common sealing designs cannot operate in an environment with a high mortar content in muddy water mixtures. Moreover, ordinary sealing methods cannot operate at high speeds in muddy water mixtures. Once the speed exceeds 100 revolutions per minute, abnormal wear of the sealing components will occur, leading to leakage. Such sealing methods have the following deficiencies:

[0003] (1) Sealing components originally need to be lubricated by liquid. When operating in an environment with a high mortar content in muddy water mixtures, the sealing surface of the sealing components is easily damaged by fine sand particles. Once the sealing surface is slightly damaged, leakage will occur.

[0004] (3) Once leakage occurs in ordinary sealing methods, the bearings or shafts will be damaged. Once the bearings or shafts are worn, they need to be replaced, resulting in a high failure frequency and extremely high maintenance costs.

[0005] (4) Equipment with ordinary sealing cannot rotate too fast, as it is likely to accelerate the wear of the seal and the shaft. Since ordinary sealing generally seals in close cooperation with the rotating shaft, abnormal temperature rise of the equipment will occur during high-speed operation of the equipment.

[0006] (5) Ordinary sealing methods cannot operate properly in environments with high temperature, high solid content, a large amount of medium debris, and a relatively high rotation speed. Once used, leakage will occur frequently and the failure rate will also be extremely high. For example, when applied to the field of municipal sludge or solid waste treatment, ordinary sealed stirring devices cannot adapt for a long time. Summary of the Invention

[0007] The technical problem to be solved by the present invention is: aiming at the technical problems existing in the prior art, the present invention provides a stirring device with liquid lubrication, cooling and sealing, which has a simple and compact structure, is easy to install, has a low cost, and has a good sealing effect.

[0008] To solve the above technical problems, the present invention adopts the following technical solutions:

[0009] A stirring device with liquid lubrication, cooling and sealing, comprising a stirrer, a liquid cooler, a liquid recovery tank and a liquid booster pump; an outer cavity of the stirrer is provided at the outer end of the stirrer; a liquid lubrication, cooling and sealing cavity is provided at the inner side end of the stirrer; a double static ring seal is provided in the liquid lubrication, cooling and sealing cavity, and two liquid channels are provided on the outer shell of the liquid lubrication, cooling and sealing cavity, namely an inlet of the sealing cavity liquid channel and an outlet of the sealing cavity liquid channel. A static ring gland of the seal and a static ring gland seal ring of the seal are provided at the inner side end of the liquid lubrication, cooling and sealing cavity, and a second static ring of the seal is provided at the inner side of the static ring gland of the seal.

[0010] As a further improvement of the present invention: the double static ring seal includes a first static ring of the seal and a second static ring of the seal. The second static ring of the seal is fixed on the liquid lubrication, cooling and sealing cavity through the static ring gland of the seal, and a static ring gland seal ring is provided between the static ring gland of the seal and the liquid lubrication, cooling and sealing cavity.

[0011] As a further improvement of the present invention: an inlet of the sealing cavity liquid channel and an outlet of the sealing cavity liquid channel are respectively provided on the shell of the liquid lubrication, cooling and sealing cavity, and a sealing cavity liquid channel inlet seal ring and a sealing cavity liquid channel outlet seal ring are provided between the liquid lubrication, cooling and sealing cavity and the outer cavity of the stirrer.

[0012] As a further improvement of the present invention: a stirring blade is provided at one end of the stirrer, and a driving motor mounting seat is provided at the other end. The double static ring seal is installed on the stirring shaft of the stirrer, and a stirrer driving coupling and a stirring blade are respectively installed at both ends of the stirring shaft.

[0013] As a further improvement of the present invention: an inlet of the liquid channel and an outlet of the liquid channel are respectively provided on the outer shell of the outer cavity of the stirrer. The liquid lubrication, cooling and sealing cavity is butt-jointed and fastened with the outer cavity of the stirrer. When butt-jointing and fastening, the inlet of the sealing cavity liquid channel and the outlet of the sealing cavity liquid channel are aligned with the inlet of the liquid channel and the outlet of the liquid channel on the outer cavity of the stirrer.

[0014] As a further improvement of the present invention: an outer end bearing, a first inner end bearing and a second inner end bearing are respectively provided in the outer cavity of the stirrer, and a stirring shaft is fixed in the middle of the outer end bearing, the first inner end bearing and the second inner end bearing.

[0015] As a further improvement of the present invention: a quick connector for the inlet of the liquid channel and a quick connector for the outlet of the liquid channel are provided on the outer side end face of the outer cavity of the stirrer, and a grease injection nozzle for bearing lubrication is provided at another angle on the outer side end face of the outer cavity of the stirrer to provide grease for the outer end bearing, the first inner end bearing and the second inner end bearing provided in the outer cavity of the stirrer.

[0016] As a further improvement of the present invention: an outer bearing gland is provided on the outer side end face of the outer cavity of the stirrer, and an outer bearing gland skeleton oil seal is provided inside the outer bearing gland to prevent the grease of the first inner end bearing and the second inner end bearing of the outer end bearing provided in the outer cavity of the stirrer from leaking out.

[0017] As a further improvement of the present invention: a lubricating and cooling liquid pipe outlet is connected to the outlet of the liquid channel quick connector. The end of the lubricating and cooling liquid pipe outlet is connected to a liquid cooler. The lubricating and cooling liquid passing through the liquid cooler flows into a liquid recovery tank. The lubricating and cooling liquid cooled in the liquid recovery tank is transported through a lubricating and cooling liquid pipe by a liquid booster pump and sent to a liquid lubricating and cooling seal cavity to lubricate and cool the double stationary ring seals, the first inner end bearing and the second inner end bearing. A liquid working pressure gauge is installed at the outlet of the liquid booster pump to display the pressure inside the liquid lubricating and cooling seal cavity.

[0018] As a further improvement of the present invention: a liquid control valve and a liquid flow observation window are provided on the lubricating and cooling liquid pipe outlet. The liquid control valve is used to control the pressure of the lubricating and cooling liquid in the liquid lubricating and cooling seal cavity, and the liquid flow observation window is used to monitor the operation quality and flow rate of the lubricating and cooling liquid.

[0019] Compared with the prior art, the advantages of the present invention are as follows:

[0020] 1. The stirring device with liquid lubricating and cooling seal of the present invention has a simple and compact structure, is easy to install, has a low cost, and has a good sealing effect. By adjusting the pressure of the lubricating and cooling liquid higher than the pressure of the medium in the tank, the tightness between the seal and the stationary ring can be increased, ensuring that the complex medium in the tank will not leak through the sealing surface.

[0021] 2. The stirring device with liquid lubricating and cooling seal of the present invention can increase the pressure of the lubricating and cooling liquid to form a liquid protective film on the surfaces of the dynamic and static sealing surfaces, so that the medium with a high content of liquid or mortar in the tank will not leak from the sealing contact surface due to the too high pressure in the tank, resulting in damage to the sealing contact surface, and the service life of the seal is prolonged.

[0022] 3. The stirring device with liquid lubricating and cooling seal of the present invention can select lubricating oil or water for lubrication, has a low cost, is easy to operate, and the lubricating liquid is cooled by a supporting liquid cooler and then recycled. The cooled lubricating liquid can better protect the double stationary ring seals and the bearings at the inner end of the stirrer.

[0023] 4. The stirring device with liquid lubricating and cooling seal of the present invention has a very low failure rate during use, is easy to maintain, and can be used arbitrarily on other existing stirring equipment and facilities with harsh environments. Description of the Drawings

[0024] Figure 1 It is a schematic structural principle diagram of the stirring device in a specific application example of the present invention.

[0025] Figure 2 It is a schematic structural principle diagram of the stirring device after assembly in a specific application example of the present invention.

[0026] Figure 3 It is a schematic cross-sectional structural diagram of the stirring device in a specific application example of the present invention.

[0027] Legend Explanation:

[0028] 1. Stirrer; 12. Outer cavity of stirrer; 13. Liquid lubrication and cooling seal cavity; 14. Static seal ring gland of seal; 15. Outer bearing gland; 151. Skeleton oil seal of outer bearing gland; 16. Stirring shaft; 17. Mounting seat for driving motor; 121. Fixed flange of stirrer; 122. Outer end bearing; 123. First inner end bearing; 124. Second inner end bearing; 1251. Inlet of liquid passage; 1252. Outlet of liquid passage; 1261. Quick connector for inlet of liquid passage; 1262. Quick connector for outlet of liquid passage; 1263. Inlet of lubricating and cooling liquid pipe; 1264. Outlet of lubricating and cooling liquid pipe; 1265. Liquid control valve; 1266. Liquid flow observation window; 127. Grease injection nozzle for bearing lubrication; 131. Double static seal; 1311. First static seal ring of seal; 1312. Second static seal ring of seal; 1321. Inlet of liquid passage in seal cavity; 1322. Outlet of liquid passage in seal cavity; 1331. Sealing ring for inlet of liquid passage in seal cavity; 1332. Sealing ring for outlet of liquid passage in seal cavity; 134. Sealing ring of static seal ring gland; 161. Driving coupling of stirrer; 162. Stirring blade; 163. Locking nut for stirring blade; 2. Liquid cooler; 3. Liquid recovery tank; 4. Liquid booster pump; 41. Liquid working pressure gauge. Detailed Embodiment

[0029] The following will further elaborate on the present invention in detail in conjunction with the specification drawings and specific embodiments.

[0030] Such as Figure 1 , Figure 2 and Figure 3As shown in the figure, the stirring device with liquid lubrication, cooling and sealing of the present invention includes a stirrer 1 with liquid lubrication, cooling and sealing, a liquid cooler 2, a liquid recovery tank 3 and a liquid booster pump 4; one end of the stirrer 1 with liquid lubrication, cooling and sealing is provided with a stirring blade 162, and the other end is provided with a drive motor mounting seat 17. The outer side end of the stirrer 1 with liquid lubrication, cooling and sealing is provided with a stirrer outer cavity 12; the inner side end of the stirrer 1 with liquid lubrication, cooling and sealing is provided with a liquid lubrication, cooling and sealing cavity 13; a double stationary ring seal 131 is arranged in the liquid lubrication, cooling and sealing cavity 13. There are two liquid channels on the outer shell of the liquid lubrication, cooling and sealing cavity 13, namely a sealing cavity liquid channel inlet 1321 and a sealing cavity liquid channel outlet 1322. The inner side end of the liquid lubrication, cooling and sealing cavity 13 is provided with a seal stationary ring gland 14 and a seal stationary ring gland sealing ring 134. The seal stationary ring gland 14 is provided with a second seal stationary ring 1312 on the inner side to prevent external miscellaneous dirt from entering the liquid lubrication, cooling and sealing cavity 13.

[0031] In a specific application example, the double stationary ring seal 131 includes a first seal stationary ring 1311 and a second seal stationary ring 1312. The second seal stationary ring 1312 is fixed on the liquid lubrication, cooling and sealing cavity 13 through the seal stationary ring gland 14. A seal stationary ring gland sealing ring 134 is arranged between the seal stationary ring gland 14 and the liquid lubrication, cooling and sealing cavity 13.

[0032] In a specific application example, the liquid lubrication, cooling and sealing cavity 13 is respectively provided with a sealing cavity liquid channel inlet 1321 and a sealing cavity liquid channel outlet 1322 on the shell. A sealing cavity liquid channel inlet sealing ring 1331 and a sealing cavity liquid channel outlet sealing ring 1332 are arranged between the liquid lubrication, cooling and sealing cavity 13 and the stirrer outer cavity 12.

[0033] In a specific application example, the double stationary ring seal 131 is installed on the stirring shaft 16 of the stirrer 1. The two ends of the stirring shaft 16 are respectively installed with a stirrer 1 drive coupling 161 and a stirring blade 162. The stirring blade 162 is fixed on the stirring shaft 16 by a stirring blade locking nut 163.

[0034] In a specific application example, the liquid lubrication, cooling and sealing cavity 13 is butt - fastened to the stirrer outer cavity 12 with bolts. When butt - fastening, the sealing cavity liquid channel inlet 1321 and the sealing cavity liquid channel outlet 1322 must be aligned with the liquid channel inlet 1251 and the liquid channel outlet 1252 on the stirrer outer cavity 12. The seal stationary ring gland 14 is butt - fastened to the liquid lubrication, cooling and sealing cavity 13 with bolts.

[0035] In a specific application example, a liquid passage inlet 1251 and a liquid passage outlet 1252 are respectively provided on the outer shell of the outer cavity 12 of the stirrer. An outer end bearing 122, a first inner end bearing 123, and a second inner end bearing 124 are respectively arranged inside the outer cavity 12 of the stirrer. A stirring shaft 16 is fixed in the middle of the outer end bearing 122, the first inner end bearing 123, and the second inner end bearing 124.

[0036] In a specific application example, a quick connector 1261 for the liquid passage inlet and a quick connector 1262 for the liquid passage outlet are provided on the outer side end face of the outer cavity 12 of the stirrer. A bearing grease injection nozzle 127 is provided at another angle on the outer side end face of the outer cavity 12 of the stirrer to supply grease to the outer end bearing 122, the first inner end bearing 123, and the second inner end bearing 124 arranged inside the outer cavity 12 of the stirrer.

[0037] In a specific application example, an outer bearing gland 15 is provided on the outer side end face of the outer cavity 12 of the stirrer. An outer bearing gland skeleton oil seal 151 is arranged inside the outer bearing gland 15 to prevent the grease of the outer end bearing 122, the first inner end bearing 123, and the second inner end bearing 124 arranged inside the outer cavity 12 of the stirrer from leaking out.

[0038] In a specific application example, a lubricating and cooling liquid pipe outlet 1264 is connected to the quick connector 1262 for the liquid passage outlet. A liquid control valve 1265 and a liquid flow observation window 1266 are provided on the lubricating and cooling liquid pipe outlet 1264. The end of the lubricating and cooling liquid pipe outlet 1264 is connected to a liquid cooler 2. The lubricating and cooling liquid passing through the liquid cooler 2 flows into a liquid recovery tank 3. The lubricating and cooling liquid cooled in the liquid recovery tank 3 is transported through a lubricating and cooling liquid pipe inlet 1263 by a liquid booster pump 4 to a liquid lubricating and cooling seal cavity 13 to lubricate and cool a double stationary ring seal 131, the first inner end bearing 123, and the second inner end bearing 124. A liquid working pressure gauge 41 is installed at the outlet of the liquid booster pump 4 to display the pressure inside the liquid lubricating and cooling seal cavity 13 and ensure that the pressure of the lubricating and cooling liquid is within the controlled range.

[0039] In a specific application example, the liquid control valve 1265 is mainly used to control the pressure of the lubricating and cooling liquid inside the liquid lubricating and cooling seal cavity 13, and the liquid flow observation window 1266 is mainly used to monitor the operation quality and flow rate of the lubricating and cooling liquid.

[0040] In the device of the present invention, during the operation of the double stationary ring seal 131, liquid lubrication and cooling are required to well protect the sealing surface of the seal from abnormal damage. A part of the stirrer outer cavity 12 and the liquid lubrication and cooling seal cavity 13 on the liquid lubrication and cooling seal stirrer 1 are designed and installed in a relatively large storage tank. Since the medium in the tank is complex, the temperature is relatively high and there is a certain pressure, the double stationary ring seal 131 in the liquid lubrication and cooling seal cavity 13 and the first inner end bearing 123 and the second end bearing 124 inside the stirrer outer cavity 12 cannot be well cooled. Therefore, by respectively designing a seal cavity liquid passage inlet 1321, a seal cavity liquid passage outlet 1322, a liquid passage inlet 1251 and a liquid passage outlet 1252 on the shells of the stirrer outer cavity 12 and the liquid lubrication and cooling seal cavity 13, lubricating and cooling liquid can be directly provided to the double stationary ring seal 131 in the liquid lubrication and cooling seal cavity 13 for lubrication and cooling. The stirrer fixed flange 121 and the drive motor mounting seat 17 are located outside a relatively large storage tank. The lubricating and cooling liquid can flow back to the liquid cooler 2 through the lubricating and cooling liquid pipe outlet 1264 for cooling. After cooling, the lubricating liquid directly flows into the liquid recovery tank 3 for temporary storage, is pressurized by the liquid booster pump 4 and enters through the lubricating and cooling liquid pipe inlet 1263, and is sent into the liquid lubrication and cooling seal cavity 13 for circulation. The pressure and flow rate of the lubricating and cooling liquid can be adjusted by the liquid control valve 1265.

[0041] The stirrer outer cavity 12 and the liquid lubrication and cooling seal cavity 13 are separate. Due to the special nature of the components, they cannot be processed into a single integral part. The liquid passage inlet 1251, the liquid passage outlet 1252, the seal cavity liquid passage inlet 1321 and the seal cavity liquid passage outlet 1322 are drilled on the stirrer outer cavity 12 and the liquid lubrication and cooling seal cavity 13. The liquid passage inlet 1251, the seal cavity liquid passage inlet 1321 and the liquid passage outlet 1252, the seal cavity liquid passage outlet 1322 of the two components are respectively through.

[0042] The stirring device with liquid lubrication, cooling and sealing of the present invention is more suitable for the municipal sludge treatment process with complex medium and high mortar content. The stirring device uses a double stationary ring seal 131, and adopts liquid lubrication, cooling and recycling to protect the double stationary ring seal 131 from being easily damaged. By increasing the pressure of the recycled lubricating and cooling liquid by a certain amount, it mainly offsets the pressure in the storage tank to maintain balance, which can well protect the sealing surface of the seal. If the pressure of the lubricating and cooling liquid is increased higher than a certain pressure in the storage tank, the tightness of each sealing surface can be increased, making the sealing effect of the seal better. Moreover, the high-pressure lubricating and cooling liquid will form a protective film on each sealing surface, making the seal more durable. The lubricating liquid circulates in and out through the channels of the liquid lubrication, cooling and sealing cavity 13 and the outer cavity 12 of the stirrer. After being mainly cooled by the liquid cooler, it enters the liquid lubrication, cooling and sealing cavity 13 to cool the seal and the first inner end bearing 123 and the second end bearing 124. The lubricating liquid passes through the liquid control valve, mainly to facilitate the adjustment of the pressure of the lubricating liquid in the sealing ring; the lubricating liquid passes through the liquid flow window, mainly to monitor the amount and cooling effect of the lubricating liquid, and can also monitor the operation quality of the lubricating liquid, so as to better protect the double stationary ring seal 131, and can better understand the cooling conditions of the seal and each bearing, so that the seal and each bearing always operate within a controllable temperature range.

[0043] The first stationary ring 1311 of the seal mainly protects the bearing end and prevents the lubricating and cooling liquid from leaking into the bearing cavity. The second stationary ring 1312 of the seal mainly prevents the complex medium outside the liquid lubrication, cooling and sealing cavity 13 from entering.

[0044] Generally, the stirrer 1 is prone to leakage and frequent equipment failures and cannot operate stably in high-temperature and high-pressure environments. The sealing surface of the seal used in the general stirrer 1 is easily damaged, and the bearing and the stirring shaft are also easily damaged. The stirring device with liquid lubrication, cooling and sealing can solve the above problems.

[0045] The above is only the preferred embodiment of the present invention. The protection scope of the present invention is not limited to the above embodiments. All technical solutions within the idea of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and retouches should be regarded as the protection scope of the present invention.

Claims

1. A stirring device with liquid lubrication, cooling and sealing, characterized in that, it includes a stirrer (1), a liquid cooler (2), a liquid recovery tank (3) and a liquid booster pump (4); an outer cavity of the stirrer (12) is provided at the outer end of the stirrer (1); a liquid lubrication, cooling and sealing cavity (13) is provided at the inner side end of the stirrer (1); a double stationary ring seal (131) is provided in the liquid lubrication, cooling and sealing cavity (13), and two liquid channels are provided on the outer shell of the liquid lubrication, cooling and sealing cavity (13), namely a sealing cavity liquid channel inlet (1321) and a sealing cavity liquid channel outlet (1322), a stationary ring gland (14) and a stationary ring gland seal ring (134) of the seal are provided at the inner side end of the liquid lubrication, cooling and sealing cavity (13), and a second stationary ring (1312) of the seal is provided at the inner side of the stationary ring gland (14); an outer end bearing (122), a first inner end bearing (123) and a second inner end bearing (124) are respectively provided in the outer cavity of the stirrer (12), and a stirring shaft (16) is fixed between the outer end bearing (122), the first inner end bearing (123) and the second inner end bearing (124); a sealing cavity liquid channel inlet (1321) and a sealing cavity liquid channel outlet (1322) are respectively provided on the shell of the liquid lubrication, cooling and sealing cavity (13), and a sealing cavity liquid channel inlet seal ring (1331) and a sealing cavity liquid channel outlet seal ring (1332) are provided between the liquid lubrication, cooling and sealing cavity (13) and the outer cavity of the stirrer (12); a stirring blade (162) is provided at one end of the stirrer (1), and a driving motor mounting seat (17) is provided at the other end, the double stationary ring seal (131) is installed on the stirring shaft (16) of the stirrer (1), and a stirrer driving coupling (161) and a stirring blade (162) are respectively installed at both ends of the stirring shaft (16).

2. The stirring device with liquid lubrication, cooling and sealing according to claim 1, characterized in that, the double stationary ring seal (131) includes a first stationary ring (1311) of the seal and a second stationary ring (1312) of the seal, the second stationary ring (1312) of the seal is fixed on the liquid lubrication, cooling and sealing cavity (13) through the stationary ring gland (14), and a stationary ring gland seal ring (134) is provided between the stationary ring gland (14) and the liquid lubrication, cooling and sealing cavity (13).

3. The stirring device with liquid lubrication, cooling and sealing according to claim 1, characterized in that, a liquid channel inlet (1251) and a liquid channel outlet (1252) are respectively provided on the outer shell of the outer cavity of the stirrer (12), the liquid lubrication, cooling and sealing cavity (13) is butt-jointed and fastened to the outer cavity of the stirrer (12), and when butt-jointing and fastening, the sealing cavity liquid channel inlet (1321) and the sealing cavity liquid channel outlet (1322) are aligned with the liquid channel inlet (1251) and the liquid channel outlet (1252) on the outer cavity of the stirrer (12).

4. The stirring device with liquid lubrication, cooling and sealing according to any one of claims 1-3, It is characterized in that a liquid passage inlet quick connector (1261) and a liquid passage outlet quick connector (1262) are provided on the outer side end surface of the outer cavity (12) of the stirrer, and a bearing grease injection nozzle (127) is provided at another angle on the outer side end surface of the outer cavity (12) of the stirrer to supply grease to the outer end bearing (122), the first inner end bearing (123) and the second inner end bearing (124) provided in the outer cavity (12) of the stirrer.

5. The liquid lubrication, cooling and sealing stirring device according to claim 4 It is characterized in that an outer bearing gland (15) is provided on the outer side end surface of the outer cavity (12) of the stirrer, and an outer bearing gland skeleton oil seal (151) is provided inside the outer bearing gland (15) to prevent the grease of the outer end bearing (122), the first inner end bearing (123) and the second inner end bearing (124) provided in the outer cavity (12) of the stirrer from leaking out.

6. The liquid lubrication, cooling and sealing stirring device according to claim 4 It is characterized in that a lubricating and cooling liquid pipe outlet (1264) is connected to the liquid passage outlet quick connector (1262), the end of the lubricating and cooling liquid pipe outlet (1264) is connected to a liquid cooler (2), the lubricating and cooling liquid passing through the liquid cooler (2) flows into a liquid recovery tank (3), and the lubricating and cooling liquid cooled in the liquid recovery tank (3) is transported through a lubricating and cooling liquid pipe inlet (1263) by a liquid booster pump (4) to a liquid lubrication, cooling and sealing cavity (13) to lubricate and cool a double stationary ring seal (131), the first inner end bearing (123) and the second inner end bearing (124). A liquid working pressure gauge (41) is installed at the outlet of the liquid booster pump (4) to display the pressure inside the liquid lubrication, cooling and sealing cavity (13).

7. The liquid lubrication, cooling and sealing stirring device according to claim 6 It is characterized in that a liquid control valve (1265) and a liquid flow observation window (1266) are provided on the lubricating and cooling liquid pipe outlet (1264). The liquid control valve (1265) is used to control the pressure of the lubricating and cooling liquid in the liquid lubrication, cooling and sealing cavity (13), and the liquid flow observation window (1266) is used to monitor the operation quality and flow rate of the lubricating and cooling liquid.

Images