A mechanical seal for kettle

Abstract

The utility model discloses a mechanical seal for a kettle, belonging to the technical field of mechanical seals, comprising a stirring shaft, a shaft sleeve is arranged on the outer side of the stirring shaft, and an isolation plate, a stationary ring seat, a stationary ring part, and a dynamic ring part are fixedly arranged on the upper and lower ends of the shaft sleeve from the outside to the inside, a spring part is arranged between the two dynamic ring parts, and a heat dissipation shell is fixedly arranged between the opposite ends of the two isolation plates. In the utility model, a spiral sheet is fixedly arranged on the inner wall of the heat dissipation shell, and when the coolant flows inside the heat dissipation shell, the spiral sheet made of heat conductive material timely transfers the heat emitted around the stationary ring part, the dynamic ring part, and the spring part, and the spiral sheet greatly extends the flow path of the coolant, which is helpful for the heat exchange between the spiral sheet and the coolant, and the outer wall of the spiral sheet is provided with a plurality of equidistant rectangular openings, and the plurality of equidistant rectangular openings are in a spiral array, which further increases the contact heat transfer area between the coolant and the spiral sheet, thereby improving the heat transfer and heat dissipation efficiency.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical seals, in particular to a mechanical seal for a kettle. Background Art

[0002] A mechanical seal is a device that prevents fluid leakage by at least one pair of end faces perpendicular to the axis of rotation, which remain in contact and slide relative to each other under the action of fluid pressure and the elastic force (or magnetic force) of the compensation mechanism and the cooperation of auxiliary seals. A mechanical seal is a shaft sealing device used in rotating fluid machinery, such as centrifugal pumps, centrifuges, reactors, compressors and other equipment. Since the transmission shaft runs through the inside and outside of the equipment, there is a circumferential gap between the shaft and the equipment. The medium in the equipment leaks out through the gap. If the pressure inside the equipment is lower than the atmospheric pressure, air leaks into the equipment. Therefore, there must be a shaft sealing device to prevent leakage. There are many types of shaft seals. Since mechanical seals have the advantages of less leakage and long life, they are the most important shaft sealing method in these equipment.

[0003] After searching, the patent publication number CN219673282U discloses a patent named a stirring mechanical seal assembly for a kettle. The technical problem to be solved is that the fixing effect of the fixing device for the sealing ring is relatively poor, and the long-term rotation of the shaft body may cause the sealing ring to be offset and deviated. By setting up a sealing ring positioning and fixing mechanism, the mechanism can facilitate the sealing ring to be firmly fixed at the connection between the shaft body and the sleeve, thereby preventing external dust from entering the interior of the reactor through the connection between the shaft body and the sleeve; but there are still the following disadvantages that need to be solved: the heat generated by the sealing surface is relatively high, so the sealing ring is in danger of continuing to vulcanize, and eventually loses its elasticity and leaks, and the heat of the sealing surface needs to be transferred and discharged in time. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a mechanical seal for a kettle.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A mechanical seal for a kettle comprises a stirring shaft, a shaft sleeve is arranged on the outer side of the stirring shaft circle, and an isolation plate, a stationary ring seat, a stationary ring component and a dynamic ring component are fixedly arranged in sequence from the outside to the inside on the upper and lower ends of the shaft sleeve circle, a spring component is arranged between the two dynamic ring components, a heat dissipation shell is fixedly arranged between the opposite ends of the two isolation plates, a liquid outlet pipe is fixedly connected to the upper end of one side of the heat dissipation shell circle, and a liquid inlet pipe is fixedly connected to the bottom end of the other side of the heat dissipation shell circle, a spiral sheet is fixedly arranged on the inner wall of the heat dissipation shell circle, and a plurality of rectangular openings with equal distances are opened on the outer wall of the spiral sheet.

[0007] Preferably, a buffer cover is fixedly provided at the outlet end of the liquid inlet pipe and the inlet end of the liquid outlet pipe, and the buffer cover is in a truncated cone shape and is made of a material-conducting material.

[0008] Preferably, the spiral blade is made of a heat-conducting material, and the thermal conductivity of the buffer cover is smaller than the thermal conductivity of the spiral blade.

[0009] Preferably, the plurality of equidistant rectangular openings are arranged in a spiral array.

[0010] Preferably, the stationary ring component, the dynamic ring component and the spring component are all located on the inner side of the heat dissipation housing.

[0011] Preferably, the two isolation plates and the liquid inlet pipe and the liquid outlet pipe are all made of thermal insulation materials.

[0012] The beneficial effects of the utility model are:

[0013] The utility model provides a mechanical seal for a kettle, which includes a stirring shaft, a shaft sleeve, an isolation plate, a stationary ring seat, a stationary ring component, a dynamic ring component, a spring component and a heat dissipation shell, thereby forming a shaft seal for the stirring shaft of the kettle, and the upper end of one side of the heat dissipation shell is fixedly connected with a liquid outlet pipe, and the bottom end of the other side of the heat dissipation shell is fixedly connected with a liquid inlet pipe, and the inner wall of the heat dissipation shell is fixedly provided with spiral blades, when coolant flows inside the heat dissipation shell, the spiral blades made of heat conductive material transfer the heat emitted around the stationary ring component, the dynamic ring component and the spring component in time, and the spiral blades greatly extend the flow path of the coolant, which is helpful for heat exchange between the spiral blades and the coolant, and the outer wall of the spiral blades is provided with a plurality of equidistant rectangular openings, and the plurality of equidistant rectangular openings are in a spiral array, which further increases the contact heat transfer area between the coolant and the spiral blades, thereby improving the heat transfer and heat dissipation efficiency.

[0014] The utility model provides a mechanical seal for a kettle, in which a buffer cover is fixedly arranged at the outlet end of a liquid inlet pipe and the inlet end of a liquid outlet pipe, and the buffer cover is in a truncated cone shape and is made of a material guide material, which helps to buffer the flow speed of the coolant when entering and being discharged from a heat dissipation housing, thereby preventing the coolant from directly impacting the stationary ring parts, the dynamic ring parts and the spring parts inside the heat dissipation housing, thereby causing the vibrations thereof and affecting the shaft sealing effect of the mechanical seal. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of a mechanical seal for a kettle proposed by the utility model;

[0016] Figure 2 This is a schematic cross-sectional structure diagram of a mechanical seal for a kettle proposed by the utility model;

[0017] Figure 3 This is a schematic diagram of the structure of a mechanical seal spiral vane for a kettle proposed by the utility model;

[0018] Figure 4 The utility model is a schematic diagram of the structure of a mechanical seal liquid inlet pipe and a liquid outlet pipe for a kettle.

[0019] In the figure: 1 a stirring shaft, 2 an isolating plate, 3 a stationary ring seat, 4 a stationary ring member, 5 a moving ring member, 6 a spring member, 7 a heat dissipation housing, 8 a liquid inlet pipe, 9 a liquid outlet pipe, 10 a spiral sheet, 11 a rectangular opening, and 12 a buffer cover. DETAILED DESCRIPTION

[0020] Reference Figure 1-4 A mechanical seal for a kettle comprises a stirring shaft 1, a shaft sleeve is arranged on the outer side of the circumference of the stirring shaft 1, and an isolation plate 2, a static ring seat 3, a static ring member 4, and a dynamic ring member 5 are fixedly arranged on the upper and lower ends of the circumference of the shaft sleeve in sequence from the outside to the inside, a spring member 6 is arranged between the two dynamic ring members 5, thereby forming a mechanical seal for the stirring shaft 1 for the kettle, a heat dissipation shell 7 is fixedly arranged between the opposite ends of the two isolation plates 2, a liquid outlet pipe 9 is fixedly connected to the upper end of one side of the circumference of the heat dissipation shell 7, a liquid inlet pipe 8 is fixedly connected to the bottom end of the other side of the circumference of the heat dissipation shell 7, a spiral sheet 10 is fixedly arranged on the inner wall of the circumference of the heat dissipation shell 7, and a plurality of rectangular openings 11 with equal distances are opened on the outer wall of the spiral sheet 10.

[0021] In the utility model, a buffer cover 12 is fixedly provided at the outlet end of the liquid inlet pipe 8 and the inlet end of the liquid outlet pipe 9, and the buffer cover 12 is truncated and made of a material guide material, which helps to buffer the flow speed of the coolant when entering and discharging the heat dissipation housing 7, thereby preventing the coolant from directly impacting the stationary ring 4, the dynamic ring 5 and the spring 6 inside the heat dissipation housing 7, thereby causing the vibration thereof and affecting the shaft sealing effect of the mechanical seal;

[0022] The spiral blade 10 is made of a heat-conducting material, and the thermal conductivity of the buffer cover 12 is smaller than that of the spiral blade 10, which helps the temperature transition of the coolant;

[0023] A plurality of equally spaced rectangular openings 11 are arranged in a spiral array, thereby greatly increasing the contact and heat transfer area between the coolant and the spiral blades 10;

[0024] The stationary ring component 4, the dynamic ring component 5 and the spring component 6 are all located on the inner side of the heat dissipation housing 1;

[0025] The two isolation plates 2 and the liquid inlet pipe 8 and the liquid outlet pipe 9 are all made of heat-insulating materials.

[0026] Working principle: The mechanical seal includes a stirring shaft 1, a sleeve, an isolation plate 2, a stationary ring seat 3, a stationary ring part 4, a dynamic ring part 5, a spring part 6 and a heat dissipation shell 7, thereby forming a shaft seal for the stirring shaft 1 for the kettle, and the upper end of the heat dissipation shell 7 on one side of the circumference is fixedly connected with a liquid outlet pipe 9, and the bottom end of the other side of the circumference of the heat dissipation shell 7 is fixedly connected with a liquid inlet pipe 8. The inner wall of the circumference of the heat dissipation shell 7 is fixedly provided with a spiral blade 10. When the coolant flows inside the heat dissipation shell 1, the spiral blade 10 made of heat conductive material transfers the heat dissipated around the stationary ring part 4, the dynamic ring part 5 and the spring part 6 in time, and the spiral blade 10 greatly extends the flow path of the coolant, which is conducive to the heat exchange between the spiral blade 10 and the coolant, and the outer wall of the spiral blade 10 is provided with a plurality of equidistant rectangular openings 11, and the plurality of equidistant rectangular openings 11 are in a spiral array, which further increases the contact heat transfer area between the coolant and the spiral blade 10, thereby improving the heat transfer and heat dissipation efficiency;

[0027] A buffer cover 12 is fixedly provided at the outlet end of the liquid inlet pipe 8 and the inlet end of the liquid outlet pipe 9, and the buffer cover 12 is truncated cone-shaped. The buffer cover 12 is made of a guide material, which helps to buffer the flow speed of the coolant when entering and discharging the heat dissipation housing 7, thereby preventing the coolant from directly impacting the stationary ring 4, the dynamic ring 5 and the spring part 6 inside the heat dissipation housing 7, thereby causing them to vibrate and affect the shaft sealing effect of the mechanical seal.

[0028] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A mechanical seal for a kettle, comprising a stirring shaft (1), a shaft sleeve being arranged on the outer side of the circumference of the stirring shaft (1), and an isolation plate (2), a stationary ring seat (3), a stationary ring member (4), and a dynamic ring member (5) being fixedly arranged on the upper and lower ends of the circumference of the shaft sleeve in order from the outside to the inside, a spring member (6) being arranged between two dynamic ring members (5), and a heat dissipation housing (7) being fixedly arranged between the opposite ends of the two isolation plates (2), characterized in that: The upper end of one side of the heat dissipation shell (7) is fixedly connected to a liquid outlet pipe (9), and the bottom end of the other side of the heat dissipation shell (7) is fixedly connected to a liquid inlet pipe (8). The inner wall of the heat dissipation shell (7) is fixedly provided with a spiral sheet (10), and the outer wall of the spiral sheet (10) is provided with a plurality of rectangular openings (11) at equal distances.

2. A mechanical seal for a kettle according to claim 1, characterized in that: The outlet end of the liquid inlet pipe (8) and the inlet end of the liquid outlet pipe (9) are both fixedly provided with a buffer cover (12), and the buffer cover (12) is in a truncated cone shape and is made of a material-conducting material.

3. A mechanical seal for a kettle according to claim 2, characterized in that: The spiral blade (10) is made of a heat-conducting material, and the thermal conductivity of the buffer cover (12) is smaller than the thermal conductivity of the spiral blade (10).

4. A mechanical seal for a kettle according to claim 1, characterized in that: The plurality of equidistant rectangular openings (11) are arranged in a spiral array.

5. A mechanical seal for a kettle according to claim 1, characterized in that: The stationary ring component (4), the dynamic ring component (5) and the spring component (6) are all located on the inner side of the heat dissipation housing (7).

6. A mechanical seal for a kettle according to claim 1, characterized in that: The two isolation plates (2), the liquid inlet pipe (8) and the liquid outlet pipe (9) are all made of heat-insulating materials.

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