Cooling system for mechanical sealing structure and stirring equipment

Abstract

The utility model discloses a cooling system for a mechanical sealing structure and stirring equipment, and belongs to the technical field of cooling systems. According to the cooling system for the mechanical sealing structure and the stirring equipment, steam introduced into the sealing liquid tank can be condensed by utilizing the condensing structure to form pure condensed water, and after the condensed water entering the mechanical sealing structure through the cooling water supply pipeline is heated, the volume is expanded and the density is reduced, so that the cooling effect is improved. After being cooled by the condensing heat exchanger, the condensed water is reduced in size and increased in density, and then enters the mechanical sealing structure again through the cooling water supply pipeline under the action of gravity, so that the condensed water can be circulated by taking the temperature difference and the density difference as driving force; the mechanical sealing structure can be cooled without additionally arranging power equipment, the cooling effect is good, the sealing failure risk is low, the structure is simple, and the cost is low.

Description

Technical Field

[0001] The utility model relates to the technical field of cooling systems, in particular to a cooling system and a stirring device for a mechanical sealing structure. Background Art

[0002] For agitators that use tank containers, if their mechanical seals are not equipped with cooling devices, the mechanical seals are in a dry grinding state. The heat generated by the friction of the mechanical seals during the mixing process cannot be dissipated in time. The mechanical seals are easily broken under high temperature conditions, resulting in failure of the mixing seals, and causing external debris to fall into the materials in the tank, leading to the risk of contamination and damage to the entire tank of materials.

[0003] Most of the existing double-end mechanical seals are cooled by running water such as tap water, and the cooling water source requires a certain pressure to supply the cooling water. Moreover, the used cooling water is directly discharged into the natural environment, which not only causes environmental pollution but also wastes water resources. Utility Model Content

[0004] The utility model aims to provide a cooling system and stirring equipment for a mechanical sealing structure, which not only have good cooling effect and low risk of sealing failure, but also have simple structure and low cost.

[0005] In order to achieve the above objectives, the following technical solutions are provided:

[0006] In one aspect, a cooling system for a mechanical seal structure is provided, comprising:

[0007] A liquid sealing tank, wherein the liquid sealing tank is provided with an exhaust valve;

[0008] A steam inlet pipeline, the steam inlet pipeline is used to introduce steam into the sealing tank;

[0009] A condensation structure, wherein the condensation structure can condense the steam entering the liquid sealing tank to form condensed water;

[0010] A cooling water supply pipeline, one end of which is connected to the sealing tank, and the other end of which can be connected to the mechanical sealing structure;

[0011] A cooling water return pipeline, one end of which can be connected to the mechanical seal structure, and the other end of which is connected to the cooling water supply pipeline;

[0012] A condensing heat exchanger is arranged on the cooling water return pipeline and is located above the connection between the cooling water return pipeline and the mechanical sealing structure.

[0013] As an optional solution for the cooling system for the mechanical sealing structure, the cooling system for the mechanical sealing structure further includes a pressure detection member, and the pressure detection member is used to detect the pressure of steam entering the mechanical sealing structure.

[0014] As an optional solution for a cooling system for a mechanical sealing structure, the cooling system for a mechanical sealing structure also includes a cooling control valve, the cooling control valve includes a first interface, a second interface, a third interface and a fourth interface, the first interface is connected to the sealing liquid tank, the second interface is connected to the cooling water supply pipeline, the third interface is connected to the cooling return water pipeline, the third interface is located below the first interface, the second interface is located below the third interface, and the fourth interface is located below the second interface.

[0015] As an optional solution for the cooling system of the mechanical sealing structure, the sealing liquid tank is provided with a liquid level detection member, and the liquid level detection member can detect the water level of the condensed water in the sealing liquid tank.

[0016] As an optional solution for the cooling system of the mechanical seal structure, the steam inlet pipeline is provided with a steam valve;

[0017] The cooling system for the mechanical sealing structure also includes a compressed air pipeline, which is connected to the steam inlet pipeline. The connection between the compressed air pipeline and the steam inlet pipeline is located downstream of the steam valve, and the compressed air pipeline is provided with an air valve.

[0018] As an optional solution for the cooling system of the mechanical seal structure, the condensation structure is provided with a first cooling channel for circulating the cooling medium; the condensation heat exchanger is provided with a second cooling channel for circulating the cooling medium;

[0019] The second cooling channel is connected to the first cooling channel through a pipeline.

[0020] As an optional solution for the cooling system of the mechanical sealing structure, the sealing liquid tank is provided with an equipment sight glass.

[0021] As an optional solution for the cooling system of the mechanical seal structure, the steam inlet line is provided with a filter.

[0022] On the other hand, a stirring device is provided, comprising a mechanical sealing structure and a cooling system for the mechanical sealing structure as described in any of the above items, wherein the mechanical sealing structure comprises a mechanical sealing chamber, and the mechanical sealing chamber is respectively connected to the cooling water supply pipeline and the cooling water return pipeline.

[0023] As an optional solution of the stirring device, the stirring device also includes:

[0024] A tank body and a stirring shaft, wherein the stirring shaft is rotatably disposed in the tank body;

[0025] The mechanical sealing structure includes two dynamic rings and two static rings. The two dynamic rings are both sleeved on the outside of the stirring shaft and can rotate with the stirring shaft. The two static rings are respectively arranged at one end of the two dynamic rings that are away from each other. The static ring abuts against the corresponding dynamic ring to form the mechanical sealing chamber between the dynamic ring, the static ring, the stirring shaft and the inner wall of the tank body.

[0026] Compared with the prior art, the utility model has the following beneficial effects:

[0027] The cooling system and stirring equipment for a mechanical sealing structure of the utility model utilize a condensation structure to condense the steam introduced into the sealing liquid tank and form pure condensed water. Steam is continuously introduced into the sealing liquid tank through a steam inlet pipe, so that the condensed water can enter the mechanical sealing structure through a cooling water supply pipe, thereby achieving sealing and lubrication. After the condensed water entering the mechanical sealing structure is heated, its volume expands and its density decreases, and then it rises through a cooling return water pipe and enters a condensing heat exchanger. After being cooled by the condensing heat exchanger, its volume decreases and its density increases, and then it enters the mechanical sealing structure again through a cooling water supply pipe under the action of gravity, so that the condensed water can circulate through temperature difference and density difference as a driving force, which is equivalent to forming a siphon phenomenon. The mechanical sealing structure can be cooled without the need for additional power equipment. Compared with the prior art, not only is the cooling effect good and the risk of sealing failure low, but the structure is simple and the cost is low.

[0028] At the same time, before cooling the mechanical sealing structure, steam can be used to steam-wash the sealing tank, cooling water supply pipeline, cooling return water pipeline and mechanical sealing structure to ensure that the surface of the mechanical sealing structure in contact with the material is in a sterile state, meeting the needs of aseptic production and having a wider range of applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] Figure 1 This is a schematic diagram of the structure of the stirring device in the embodiment of the utility model;

[0030] Figure 2 This is a schematic diagram of the structure of the mechanical seal structure in the embodiment of the utility model;

[0031] Figure 3 This is a schematic diagram of the structure of the liquid sealing tank in the embodiment of the utility model;

[0032] Figure 4 It is a schematic diagram of the structure of the condensing heat exchanger in the embodiment of the utility model.

[0033] Reference numerals:

[0034] 100, tank body; 200, stirring shaft; 201, shaft sleeve; 202, stirring blade; 300, mechanical seal structure; 301, dynamic ring; 302, static ring; 303, mechanical seal inlet; 304, mechanical seal outlet; 400, cooling system for mechanical seal structure;

[0035] 1. Steam inlet pipeline; 11. Steam valve; 2. Sealing liquid tank; 21. Equipment sight glass; 3. Condensation structure; 4. Cooling water supply pipeline; 5. Cooling return pipeline; 6. Condensing heat exchanger; 61. Heat exchange tube; 62. Cooling jacket; 621. Cooling inlet; 622. Cooling outlet; 7. Liquid level detection component; 8. Discharge pipeline; 81. Discharge valve; 9. Cooling control valve; 10. Compressed air pipeline; 101. Air valve; 12. Exhaust pipeline; 121. Exhaust valve; 13. Pressure detection component. DETAILED DESCRIPTION

[0036] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Generally, the components of the embodiments of the utility model described and shown in the drawings here can be arranged and designed in various different configurations.

[0037] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the present invention to be protected, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0038] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0039] In the description of the present utility model, it should be noted that the terms "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0040] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set" and "connection" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0042] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0043] like Figure 1-4 As shown, this embodiment provides a cooling system for a mechanical sealing structure and a stirring device, and the stirring device includes a mechanical sealing structure 300 and a cooling system 400 for the mechanical sealing structure.

[0044] The cooling system 400 for the mechanical seal structure includes a steam inlet pipeline 1, a sealing liquid tank 2, a condensation structure 3, a cooling water supply pipeline 4, a cooling water return pipeline 5 and a condensation heat exchanger 6. The sealing liquid tank 2 is provided with an exhaust valve 121. The steam inlet pipeline 1 is used to pass steam into the sealing liquid tank 2. The condensation structure 3 can condense the steam entering the sealing liquid tank 2 and form condensed water. One end of the cooling water supply pipeline 4 is connected to the sealing liquid tank 2, and the other end is connected to the mechanical seal structure 300. One end of the cooling water return pipeline 5 can be connected to the mechanical seal structure 300, and the other end is connected to the cooling water supply pipeline 4. It can be understood that the mechanical seal structure 300 includes a mechanical seal cavity, which is respectively connected to the cooling water supply pipeline 4 and the cooling water return pipeline 5. The condensation heat exchanger 6 is arranged on the cooling water return pipeline 5 and is located above the connection between the cooling water return pipeline 5 and the mechanical seal structure 300.

[0045] The cooling system 400 for the mechanical sealing structure of the present embodiment utilizes the condensation structure 3 to condense the steam introduced into the sealing liquid tank 2 and form pure condensed water. Steam is continuously introduced into the sealing liquid tank 2 through the steam inlet pipe 1, so that the condensed water can enter the mechanical sealing structure 300 through the cooling water supply pipe 4, thereby achieving the functions of sealing and lubrication. After the condensed water entering the mechanical sealing structure 300 is heated, its volume expands and its density decreases, and then it rises through the cooling return water pipe 5 and enters the condensing heat exchanger 6. After being cooled by the condensing heat exchanger 6, its volume decreases and its density increases, and then it enters the mechanical sealing structure 300 again through the cooling water supply pipe 4 under the action of gravity, so that the condensed water can circulate through the temperature difference and the density difference as the driving force, which is equivalent to forming a siphon phenomenon. The mechanical sealing structure 300 can be cooled without adding additional power equipment. Compared with the prior art, not only is the cooling effect good and the risk of sealing failure low, but the structure is simple and the cost is low.

[0046] At the same time, before cooling the mechanical sealing structure 300, steam can be used to steam-flush the sealing liquid tank 2, the cooling water supply pipeline 4, the cooling return water pipeline 5 and the mechanical sealing structure 300, so that the surface of the mechanical sealing structure 300 in contact with the material is in a sterile state, meeting the requirements of aseptic production and having a wider scope of application.

[0047] The mechanical seal structure 300 is cooled by using the cooling system 400 for the mechanical seal structure, so as to effectively reduce the heat exposure of the mechanical seal structure 300, extend the service life of the mechanical seal structure 300, and reduce the risk of failure of the mechanical seal structure 300.

[0048] Exemplarily, in this embodiment, the mechanical seal structure 300 is a double-end mechanical seal. The stirring device also includes a tank body 100 and a stirring shaft 200, the stirring shaft 200 is rotatably arranged in the tank body 100, the mechanical seal structure 300 includes two moving rings 301 and two stationary rings 302, the two moving rings 301 are both sleeved on the outside of the stirring shaft 200 and can rotate with the stirring shaft 200, the two stationary rings 302 are respectively arranged at one end of the two moving rings 301 that are away from each other, the stationary ring 302 abuts against the corresponding moving ring 301 to form a mechanical seal cavity between the moving ring 301, the stationary ring 302 and the stirring shaft 200, and the mechanical seal structure 300 also includes a mechanical seal inlet 303 and a mechanical seal outlet 304, the mechanical seal inlet 303 is connected to the cooling water supply pipeline 4, and the mechanical seal outlet 304 is connected to the cooling water return pipeline 5. When the shaft sleeve 201 is sleeved on the stirring shaft 200 , a mechanical sealing cavity is formed between the moving ring 301 , the stationary ring 302 and the shaft sleeve 201 .

[0049] It is understandable that when the moving ring 301 rotates with the stirring shaft 200, the contact surface of the moving ring 301 and the static ring 302 generates a certain friction force, which can bring the condensed water entering the mechanical seal cavity into the gap between the moving ring 301 and the static ring 302, so that the gap between the moving ring 301 and the static ring 302 is filled with condensed water, and the sealing of the stirring shaft 200 is achieved with a good sealing effect. At the same time, the rotation of the stirring shaft 200 can also make the moving ring 301 and the stirring blades 202 on the stirring shaft 200 generate centrifugal force to push the condensed water out of the mechanical seal cavity, promote the circulation of condensed water, and help improve the cooling effect.

[0050] It should be noted that before the stirring equipment starts working, a certain amount of condensed water needs to be prepared.

[0051] Optionally, the sealing tank 2 is provided with a liquid level detection member 7, which can detect the water level of the condensed water in the sealing tank 2. Exemplarily, the target water level and the minimum water level are set according to the demand, and when the liquid level detection member 7 measures that the water level of the condensed water reaches the target water level, the preparation of the condensed water is stopped; when the liquid level detection member 7 measures that the water level of the condensed water is lower than the minimum water level, the preparation of the condensed water is started.

[0052] Exemplarily, the liquid level detection member 7 adopts a water level sensor. Using the water level sensor to detect the water level is a prior art in the art and will not be described in detail here.

[0053] Optionally, the cooling system 400 for the mechanical seal structure also includes a cooling control valve 9, which includes a first interface, a second interface, a third interface and a fourth interface, wherein the first interface is connected to the sealing tank 2, the second interface is connected to the cooling water supply pipeline 4, and the third interface is connected to the cooling return water pipeline 5. It should be noted that the third interface is located below the first interface, and the second interface is located below the third interface, so that the condensed water in the sealing tank 2 enters the mechanical seal structure 300 from the cooling water supply pipeline 4, and the gas discharged from the cooling water supply pipeline 4, the mechanical seal structure 300 and the cooling return water pipeline 5 can return to the sealing tank 2 through the third interface, and finally be discharged by the exhaust valve 121. The cooling return water pipeline 5 and the cooling water supply pipeline 4 are controlled by the cooling control valve 9, which has a simple structure and convenient operation. Exemplarily, the cooling control valve 9 is a four-way valve.

[0054] In this embodiment, the installation position of the condensing heat exchanger 6 is not higher than the cooling control valve 9 to facilitate the circulation of condensed water.

[0055] Optionally, the cooling system 400 for the mechanical seal structure further includes a discharge pipeline 8, one end of which is connected to the fourth interface, the fourth interface is located below the second interface, and the discharge pipeline 8 is provided with a discharge valve 81. Exemplarily, the condensed water in the entire system can be discharged by opening the discharge valve 81.

[0056] It is understandable that during the operation of the stirring device, the pressure in the sealing tank 2 is slightly higher than the pressure in the mechanical seal chamber to ensure that the condensate in the sealing tank 2 can be pressed into the mechanical seal structure 300 to prevent back pressure. It should be noted that the steam supply is unstable and may be cut off. If the steam is interrupted during the operation of the stirring device, the material in the tank body 100 will be at risk of being contaminated and scrapped, especially when the material price is expensive, and the economic loss is very large.

[0057] Optionally, the steam inlet pipeline 1 is provided with a steam valve 11 to control the on-off of the steam inlet pipeline 1 through the steam valve 11; the cooling system 400 for the mechanical sealing structure also includes a compressed air pipeline 10, which is connected to the steam inlet pipeline 1, and the connection between the compressed air pipeline 10 and the steam inlet pipeline 1 is located downstream of the steam valve 11. The compressed air pipeline 10 is provided with an air valve 101 to control the on-off of the compressed air pipeline 10 through the air valve 101.

[0058] With such arrangement, when the steam supply is interrupted, compressed air can be introduced into the steam inlet pipeline 1 through the compressed air pipeline 10 to ensure the pressure in the sealing tank 2 and avoid the material in the mixing equipment from being scrapped, thereby avoiding risks for customers.

[0059] Optionally, the cooling system 400 for the mechanical seal structure further includes an exhaust pipeline 12, which is connected to the sealing liquid tank 2. In this embodiment, the exhaust pipeline 12 is connected to the top of the sealing liquid tank 2, and the exhaust valve 121 is provided on the exhaust pipeline 12. By controlling the layout of the exhaust pipeline 12, it is convenient to control the exhaust discharge position, thereby facilitating the overall layout of the workshop.

[0060] Optionally, the condensation structure 3 is provided with a first cooling channel for circulating the cooling medium; the condensation heat exchanger 6 is provided with a second cooling channel for circulating the cooling medium; the second cooling channel is connected to the first cooling channel through a pipeline. In this arrangement, only one cooling device needs to be provided, so that the cooling medium supplied by the cooling device first flows through the first cooling channel and then enters the second cooling channel, or first flows through the second cooling channel and then enters the first cooling channel, which is conducive to reducing costs.

[0061] Optionally, the condensation structure 3 is a cooling coil arranged in the sealing liquid tank 2. For example, the cooling coil is made of a 1 / 4" coil, the pipe is small, and the bending process is easy; the cooling coil can be produced in batches to shorten the production cycle of the cooling system 400 for the mechanical sealing structure.

[0062] Exemplarily, the condensing heat exchanger 6 is a shell-and-tube heat exchanger with a simple structure and low manufacturing difficulty; the shell-and-tube heat exchanger includes a heat exchange tube 61 and a cooling sleeve 62, the cooling sleeve 62 is sleeved on the outside of the heat exchange tube 61, and a heat exchange cavity is formed between the inner wall of the cooling sleeve 62 and the outer wall of the heat exchange tube 61, the cooling sleeve 62 includes a cooling inlet 621 and a cooling outlet 622 respectively connected to the heat exchange cavity, the cooling inlet 621 is connected to the water outlet of the cooling device, the cooling outlet 622 is connected to one end of the cooling coil, and the other end of the cooling coil is connected to the return water outlet of the cooling device.

[0063] Optionally, the sealing tank 2 is provided with an equipment sight glass 21, so that the preparation of condensed water in the sealing tank 2 can be observed through the equipment sight glass 21. Exemplarily, the sealing tank 2 can be purchased from the market with a finished tank body 100 having an equipment sight glass 21, so as to shorten the production cycle of the cooling system 400 for the mechanical sealing structure.

[0064] Exemplarily, the cooling water supply pipeline 4 and the cooling water return pipeline 5 are made of a pipe body, such as a 1 / 2" type pipe body, which is smoothly bent.

[0065] For example, the bottom of the condensing heat exchanger 6 should be higher than the mechanical seal outlet 304, and the height difference between the bottom of the condensing heat exchanger 6 and the mechanical seal outlet 304 is 0.2mm-0.6m; the horizontal distance between the center of the condensing heat exchanger 6 and the center of the mechanical seal structure 300 should be less than 1.2m. Such a setting is conducive to promoting the circulation of condensed water.

[0066] Optionally, the cooling system 400 for the mechanical seal structure further includes a pressure detection member 13, which is used to detect the pressure of the steam entering the mechanical seal structure 300. It is understandable that there is a corresponding relationship between the pressure and temperature of the steam (this is a prior art and will not be described in detail here). By using the pressure detection member 13 to detect the pressure of the steam entering the mechanical seal structure 300, the temperature of the steam entering the mechanical seal structure 300 can be known, so as to determine whether the surface of the mechanical seal structure 300 in contact with the material has reached a sterile state.

[0067] Optionally, the steam inlet pipeline 1 is provided with a filter element, and the steam or compressed air is filtered by the filter element, so as to avoid blockage and other problems in the cooling system 400 used for the mechanical sealing structure, and to prevent impurities from entering between the dynamic ring 301 and the static ring 302, affecting the sealing effect and the service life of the mechanical sealing structure 300.

[0068] Exemplarily, the working principles of the cooling system 400 and the stirring device for the mechanical seal structure of this embodiment are as follows:

[0069] Steam flushing: Close the air valve 101, open the steam valve 11 and the exhaust valve 121; the steam enters the sealing tank 2 through the steam inlet pipe 1, then enters the mechanical seal structure 300 through the cooling return water pipe 5, and then flows out of the mechanical seal structure 300 and enters the cooling water supply pipe 4 until the reading of the pressure detection element 13 is higher than or equal to the saturated vapor pressure of 121°C, indicating that the surface of the mechanical seal structure 300 in contact with the material is in a sterile state. During this process, exhaust is exhausted through the exhaust valve 121, and the cooling control valve 9 is pulsed on and off.

[0070] Water production: After the exhaust valve 121 is closed, the steam enters the liquid sealing tank 2 and condenses under the cooling effect of the condensation structure 3 to form condensed water until the liquid sealing tank 2 is filled with water, and the water production is completed. During the water production process, the water level in the liquid sealing tank 2 is detected by the liquid level detection component 7. When the water level measured by the liquid level detection component 7 is not lower than the target water level, the water production time can be extended.

[0071] Stirring: When the stirring device starts the stirring operation, the condensed water starts to circulate. The condensed water in the sealing tank 2 enters the mechanical seal structure 300 through the cooling water supply pipeline 4, and after being heated by the heat generated by the friction between the dynamic ring 301 and the static ring 302, the volume expands and the density becomes smaller and lighter, and rises through the cooling return water pipeline 5 to enter the condensation heat exchanger 6. After being cooled by the condensation heat exchanger 6, the volume shrinks and the density becomes larger and heavier. By utilizing the height difference between the condensation heat exchanger 6 and the mechanical seal structure 300, the condensed water returns to the mechanical seal structure 300 from the condensation heat exchanger 6 through the cooling water supply pipeline 4, and circulates by utilizing the temperature difference and density difference as the driving force to achieve the cooling of the mechanical seal structure 300.

[0072] The cooling system 400 for the mechanical seal structure of this embodiment has a simple structure and low cost, and has obvious advantages over similar products.

[0073] Note that the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. A cooling system for a mechanical seal structure, characterized in that: include: A liquid sealing tank (2), wherein the liquid sealing tank (2) is provided with an exhaust valve (121); A steam inlet pipeline (1), the steam inlet pipeline (1) being used to introduce steam into the sealing liquid tank (2); A condensation structure (3), wherein the condensation structure (3) is capable of condensing the steam entering the liquid sealing tank (2) to form condensed water; A cooling water supply pipeline (4), one end of the cooling water supply pipeline (4) being connected to the liquid sealing tank (2), and the other end of the cooling water supply pipeline (4) being connectable to the mechanical sealing structure (300); A cooling water return pipeline (5), one end of which can be connected to the mechanical sealing structure (300), and the other end of which is connected to the cooling water supply pipeline (4); A condensing heat exchanger (6), wherein the condensing heat exchanger (6) is arranged on the cooling water return pipeline (5) and is located above the connection between the cooling water return pipeline (5) and the mechanical sealing structure (300).

2. The cooling system for a mechanical seal structure according to claim 1, characterized in that: The cooling system (400) for a mechanical sealing structure further comprises a pressure detection component (13), wherein the pressure detection component (13) is used to detect the pressure of steam entering the mechanical sealing structure (300).

3. The cooling system for a mechanical seal structure according to claim 1, characterized in that: The cooling system (400) for the mechanical sealing structure further comprises a cooling control valve (9), wherein the cooling control valve (9) comprises a first interface, a second interface, a third interface and a fourth interface, wherein the first interface is connected to the sealing liquid tank (2), the second interface is connected to the cooling water supply pipeline (4), the third interface is connected to the cooling water return pipeline (5), the third interface is located below the first interface, the second interface is located below the third interface, and the fourth interface is located below the second interface.

4. The cooling system for a mechanical seal structure according to claim 1, characterized in that: The liquid sealing tank (2) is provided with a liquid level detection component (7), and the liquid level detection component (7) is capable of detecting the water level of the condensed water in the liquid sealing tank (2).

5. The cooling system for a mechanical seal structure according to claim 1, characterized in that: The steam inlet pipeline (1) is provided with a steam valve (11); The cooling system (400) for a mechanical sealing structure further comprises a compressed air pipeline (10), wherein the compressed air pipeline (10) is connected to the steam inlet pipeline (1), wherein the connection between the compressed air pipeline (10) and the steam inlet pipeline (1) is located downstream of the steam valve (11), and the compressed air pipeline (10) is provided with an air valve (101).

6. The cooling system for a mechanical seal structure according to claim 1, characterized in that: The condensation structure (3) is provided with a first cooling channel for circulating a cooling medium; the condensation heat exchanger (6) is provided with a second cooling channel for circulating a cooling medium; The second cooling channel is connected to the first cooling channel through a pipeline.

7. The cooling system for a mechanical seal structure according to claim 1, characterized in that: The sealing liquid tank (2) is provided with an equipment viewing mirror (21).

8. The cooling system for a mechanical seal structure according to claim 1, characterized in that: The steam inlet pipeline (1) is provided with a filter.

9. A stirring device, characterized in that: It comprises a mechanical sealing structure (300) and a cooling system (400) for the mechanical sealing structure according to any one of claims 1 to 8, wherein the mechanical sealing structure (300) comprises a mechanical sealing cavity, and the mechanical sealing cavity is respectively connected to the cooling water supply pipeline (4) and the cooling water return pipeline (5).

10. The stirring device according to claim 9, characterized in that: The stirring device also includes: A tank body (100) and a stirring shaft (200), wherein the stirring shaft (200) is rotatably disposed in the tank body (100); The mechanical sealing structure (300) comprises two moving rings (301) and two stationary rings (302). The two moving rings (301) are both sleeved on the outer side of the stirring shaft (200) and can rotate with the stirring shaft (200). The two stationary rings (302) are respectively arranged at one end of the two moving rings (301) which are away from each other. The stationary ring (302) abuts against the corresponding moving ring (301) to form the mechanical sealing cavity between the moving ring (301), the stationary ring (302), the stirring shaft (200) and the inner wall of the tank body (100).

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