KR100449164B1 - Mechanical Sealing Apparatus - Google Patents

Abstract

The present invention includes a variety of pumps, such as a conventional dynomill, sand mill, triple roller mill, mixer (Mixer) and quantitative filling machine, a device requiring high dispersion, paints, inks, pesticides and cosmetics, etc. The present invention relates to a mechanical sealing device used to seal an axial rod such as a pump that requires sealing of a fluid, including a sealing means consisting of a sealing and a stator inside a stuffing box. It is installed in single type and the sealing means is installed in double type in double type to improve sealing function by triple sealing means, and sealant is supplied separately to different pumping devices. The pump is forced to circulate, while the stator is in close contact with the sealing surface by the spring's elasticity to keep the inside closed. Not only can it get the function, lubrication and cooling function, but also it can be used efficiently for the equipment which requires the internal pressure and temperature, and it is mixed with each other because it separates and supplies the forced sealant from the device side and the atmosphere side. It is possible to prevent the phenomenon.

Description

Mechanical Sealing Apparatus

The present invention includes a variety of pumps, such as a conventional dynomill, sand mill, triple roller mill, mixer (Mixer) and quantitative filling machine, a device requiring high dispersion, paints, inks, pesticides and cosmetics, etc. The present invention relates to a mechanical sealing device that is used to seal a shaft such as a pump that requires sealing of a fluid contained therein.

In more detail, the sealant liquid containing slurry is completely supplied to the pump side and the atmosphere side of the pump (ATMOSPHERE SIDE) to be sealed, but the unit side is sealed in single and the atmosphere side is doubled. To maximize the sealing effect, and the pump side and the atmosphere side are each equipped with a pumping function so that the sealant fluid can be circulated in opposite directions without stagnation. Even though the sealant liquids of different components are supplied to the atmosphere, it is possible to prevent the mixing of them and maintain high pressure.The sealant liquid is able to withstand high temperature conditions by performing lubrication and cooling functions. It is to provide a mechanical sealing device.

Conventional mechanical sealing apparatus that is commonly used will be described with reference to the accompanying drawings.

Conventional mechanical sealing device has a shaft (2) with a sleeve (10) is installed on the outer periphery of the grand ring (4) and stuffing box (3) which is installed up and down and the shaft (2) and sleeve (10) ) Is detained so as not to be separated by the retainer, and when the shaft 2 is rotated by any rotating means, the gland ring 4 and the stuffing box 3 are supplied with a sealant while being sealed while providing a lubrication function. To get it.

However, such a conventional mechanical sealing device is pointed out the following disadvantages.

Conventional mechanical sealing devices have a single type of airtight (sealing) structure at the air side and the device side, so the sealing ability is low, and according to the characteristics of the device, different sealants containing different components or a lot of slurry are supplied. If it is mixed with each other, there is a problem that the trouble occurs, the sealant liquid is stagnated inside the device can not be supplied to the seal face can not perform the sealing function smoothly, the sealant liquid is leaked into the seal face ( The seal face was dried, and the sealing function was not able to be performed, and there was also a problem in that the abrasion occurred severely and the device was damaged.

In addition, there is a problem in that a small amount of lubricating oil (Barrier Fluid) is always leaked to the device side, so that the whole heart must be paid to harmonize the contamination when selecting the lubricating oil.

In addition, there was a problem that can not be used at high pressure because the internal sealing capacity is weak, the seal face does not perform the lubricating function efficiently, there was a problem that can not be used at high temperatures.

The present invention is to provide an improved mechanical sealing device (mechanical sealing) to solve the above problems.

The present invention is installed to seal the gland ring to the upper side of the sealing stuffing box to be sealed to the inside of the sleeve is installed to seal the shaft is equipped with a sleeve on the outer circumference while supplying the sealant liquid through the gland ring while rotating the shaft by any power unit Circulate the inside of the stuffing box installed on the device side and the inside of the gland ring located on the air side, so that separate sealants can be supplied separately, and the inside of the stuffing box consists of a sealing and a stator. Mechanical sealing to improve the sealing function by triple sealing means by installing means in single type and installing the sealing means in double type inside of grand ring. The purpose is to provide a device.

Another object of the present invention is to provide a separate pumping means in the shaft inside the gland ring, respectively, by forcibly circulating the sealant liquid supplied through the sealant supply nozzle of the gland ring to the device side and the atmosphere side so that the sealant liquid is not stagnant. In order to provide a sealing effect and a cooling effect, and to provide a mechanical sealing device in which the sealant liquid is not mixed with each other.

Another object of the present invention is to spring the stator in contact with the sealing in each sealing means by the spring to maintain the internal pressure at a high pressure while improving the sealing function, the spring is installed in the lower sealing means The present invention provides a mechanical sealing device which is supported by a separate spring holder to prevent the spring from falling off.

It is still another object of the present invention to provide a mechanical sealing device in which a shaft is supported by a triple installed jig to prevent eccentricity and the shaft rotates smoothly.

The above object of the present invention,

The gland ring 4 is mounted on the upper surface of the stuffing box 3 on which the inner chamber 3-1 is formed to be sealed and in communication with the sleeve 10, and the sleeve 10 is screwed to the communicating portion of the stuffing box 3 and the gland ring 4. In which the shaft (2) attached to the outer circumference is rotatably installed by (41), and the sealant liquid is supplied and circulated on the outer circumference of the sleeve (10),

The lower retainer 20 is detachably mounted to the sleeve 10 in the inner chamber 3-1 of the stuffing box 3, and the upper retainer 35 is integrally mounted on the outer circumference of the sleeve 10, and the shaft 2 In the outer periphery of the), the upper surface of the grand ring (4), the assembly jig (5), (6) (7) is mounted in triplicate to install the shaft (2) on the center line,

In the inside of the stuffing box 3 on the device side, a sealing device is provided in the lower side of the lower retainer 20 as a single type, and a sealing device is provided below the upper retainer 35 in the inside of the grand ring 4 on the atmospheric side. Installed in a double shape and the sealing device is installed in triple in the outer side of the shaft 22,

The sealant on the device side and the sealer on the air side are separately supplied and circulated with a sealant liquid,

It is achieved by the mechanical sealing device (1) characterized in that the pumping device is installed on the device side and the atmosphere side to separate the sealant liquid supplied separately to the device side and the atmosphere side to force the pumping.

1 is a plan view of the mechanical sealing device according to the present invention.

Figure 2 is a cross-sectional view showing the structure of the mechanical sealing device according to the present invention.

Figure 3 is an enlarged cross-sectional view showing the main portion in the mechanical sealing device according to the present invention.

4a and 4 are a plan view and a cross-sectional view showing another embodiment of the mechanical sealing device according to the present invention.

Explanation of symbols on the main parts of the drawings

1. Mechanical sealing device 2. Shaft 3. Stuffing box

4. Grand ring 5.6.7. Assembly jig 8.9. volt

10. Sleeve 13. Sealing 16. Seal Face

17.Insert 20.Retainer 22.27.28. spring

23.Impeller 30.31. Insert 33.34. Sealing

35. Retainer 35-2. Pumping ring 40. Set cover

41. Screw 45. Atmospheric seal supply nozzle 46. Atmospheric Sealant Nozzle 47. Sealant supply nozzle at side 48. Device side sealant discharge nozzle

The above objects and features of the present invention will be more clearly understood by the following detailed description based on the accompanying drawings.

1 to 4B show specific implementation examples of the mechanical sealing apparatus 1 to 1-1 according to the present invention, and FIGS. 1 and 2 are a plan view and a sectional view, and FIG. 3 is a main part. 4 is an enlarged cross-sectional view, and FIGS. 4A and 4B are a plan view and a cross-sectional view showing another embodiment.

First, the mechanical sealing device 1 illustrated in FIGS. 1 to 3 will be described.

On the upper surface of the stuffing box 3 in which the inner chamber 3-1 is formed to be in communication with the upper and lower sides and the apparatus side sealant discharge nozzle 48 is formed, the apparatus side sealant supply nozzle 47 and the atmosphere side sealant supply nozzle 45 and the atmosphere The grand ring 4 in which the side sealant discharge nozzles 46 were formed was provided as an integral type.

Insert the lower retainer 20, the flange 20-1 is formed on the upper end of the inner chamber (3-1) of the stuffing box (3) and the ground ring (4) is placed thereon, the flange of the lower retainer (20) A grand gasket 37 was fitted to the bottom of 20-1, and an O-ring 21 was fitted to the outer circumference of the flange 20-1 to keep it sealed.

The interior of the stuffing box (3) and the inner ring (3-1) and the ground ring (4) formed integrally as described above is installed to be rotatable by inserting the shaft (2), the outer periphery of the shaft (2) at the bottom (10-1) is inserted into the sleeve 10 formed outwardly and the upper outer side of the sleeve 10 through the packing 36 through the upper retainer 35 and the separate set cover 40 is inserted and placed Screw the screw 41 to the upper retainer 35 and the sleeve 10 and the set cover 40 to the upper end of the shaft (2) integrally fixed, the upper side of the screw 41 snap ring (42) The screw 41 is prevented from being separated and the sleeve packing 11 is fitted in the inner circumference of the flange 10-1 to maintain the sealed state.

The sealing 13 is integrally fixed to the upper surface of the flange 10-1 integrally formed at the lower end of the sleeve 10 by the drive pin 15, and the inner surface of the sealing 13 and the outer surface of the sleeve 10 The sleeve packing 12 is inserted in between to maintain the sealed state. On the upper surface of the sealing 13, the sleeve 10 is fitted with a snap ring 14 to couple the sealing 13 integrally with the flange 10-1. The stator 16 is inserted and placed on the upper surface of the sealing 13, and the insert 17 is inserted into the upper side of the stator 16 by the spring 22, and the insert ( The upper portion of 17) is to be inserted into the lower retainer 20.

In particular, the flange 17-1 outwardly formed in the middle of the outer periphery of the insert 17 is to be connected to the inner surface of the lower retainer 20, the insert 17 and the lower retainer (above the flange 17-1) The insert packing 18 is inserted between the 20 and the insert packing 18 so as to be buffered while the insert packing 18 is kept in a sealed state. The insert packing 18 is inserted into the spring set groove formed on the opposite surface of the insert 17 and the lower retainer 20 at the upper side of the insert packing 18. The spring 22 was settled, but the lower end of the spring 22 was provided with a spring holder 22-1 to support the spring 22 and to allow the insert 17 to be shot downward.

The impeller 23 is integrally mounted on the outer circumference of the sleeve 10 on the almost same line as the upper end of the lower retainer 20, but the impeller packing 25 is inserted into the annular groove formed on the outer circumference of the sleeve 10 to impeller ( 23) can be mounted more firmly.

In addition, a sealing device was installed in a double type inside the grand ring 4.

The inner ring groove 4-1 and the outer spring groove 4-2 were formed inside the grand ring 4 to load the springs 28 and 27, respectively, and the inner insert 32 and the outer insert thereon. (32-1) was inserted and placed, and stator (30) and (31) and sealing (33) and (34) were sequentially inserted into the upper surfaces of each inner insert 32 and outer insert 32-1. He was enshrined. The seal 33 and the seal 34 are formed at the center of the bottom surface of the upper retainer 35 and are packed on the inner and outer surfaces of the annular partitioning protrusion 35-1 having the pumping ring 35-2 formed at the lower end thereof. 1). (36-2) were inserted in contact with each other, but the sealing (33) (34) was fixed to the bottom surface of the upper retainer (35) by the drive pin (39) (39-1).

The assembly jig 5 is fixed to the outer circumference of the upper retainer 35 with a bolt 9 and at the same time, the assembly jig 6 and the assembly jig 7 are fixed with bolts 8 to be detained so as not to be separated. The inner end of the jig 7 is to hold the upper end of the set cover 40.

In addition, the mechanical sealing device 1-1 illustrated in FIGS. 4A and 4B is formed in the same manner as described above in the embodiment of FIGS. 1 and 3, but has an annular protrusion inside the upper surface of the upper retainer 35. (35-3) and the outside of the set cover 40 is fixed to the bolt (9-1), but the protective support pipe (40-1) integrally formed on the bottom of the bottom of the set cover 40 sealing ( 34) and the outer surface of the outer insert 32-1.

The operation relationship will be described below.

Although not shown specifically in the upper side of the shaft 2 in the mechanical sealing device (1) · (1-1) according to the present invention, the power unit is connected to rotate the shaft (2), the lower end of the impeller (Not specifically shown) to be used.

The sealant liquid is supplied through the atmospheric side sealant supply nozzle 45 and the apparatus side sealant supply nozzle 47 while the shaft 2 is being rotated by a predetermined power unit.

When the shaft 2 is rotated, the set cover 40, the upper retainer 35, the sealing 33, and the 34 are integrally formed on the upper side together with the sleeve 10 that is integral with each other. The impeller 23 is rotated, and the sealing 13 rotates together with the flange 10-1 of the sleeve 10 at the lower end.

As described above, when the seals 33 and 34 rotate from the upper side, the stator 30 is shot by the inner insert ring 32 and the outer insert ring 33 that are shot by the springs 27 and 28. When the 31 comes into surface contact with the sealing 33 and 34, and the sealing 13 rotates from the lower side, the stator 16 is lowered by the insert ring 17 that is elasticized by the spring 22. While the car is in contact with the sealing (13).

In addition, when the sleeve 10 rotates together with the shaft 2, the impeller 23 rotates to pump the lower side, and the pumping ring 35-2 of the upper retainer 35 rotates together with the sleeve 10. As it is pumped to both sides.

As described above, the sealant is supplied through the atmospheric sealant supply nozzle 45 and the device side sealant supply nozzle 47 while the impeller 23 and the pumping ring 35-2 are being pumped.

The sealant liquid supplied through the atmospheric side sealant supply nozzle 45 is supplied between the stators 30 and 31, and the sealant liquid supplied is pumped by the rotating pumping ring 35-2, and is provided inside. After passing between the stator 30 and the sealing 33 and between the stator 31 and the sealing 34 provided on the outside and sealing and lubricating the outside, the air is discharged through the atmospheric sealant discharge nozzle 46. Is discharged.

In addition, the sealant liquid supplied through the device side sealant supply nozzle 47 is pumped by the rotating impeller 23 and is forcibly pumped between the insert ring 17 and the sleeve 10, and is forcibly pumped sealant liquid. The seal passes through the stator 16 and the sealing 13 to provide a sealing (sealing) function and lubrication, and is discharged to the outside through the device side sealant discharge nozzle 47.

As described above, different sealant liquids are supplied through the atmospheric side sealant supply nozzle 45 and the apparatus side sealant supply nozzle 47, and the pumping ring 35-2 and the sleeve of the upper retainer 35 by pumping means. 10. The stator 16, 30, 31 and the sealing 13, 33, 34 are dried because the impeller 23 mounted in 10 is pumped in the opposite direction and forcedly circulated without stagnation. It is possible to fundamentally prevent it from becoming worn, thus preventing the stator 16, 30, 31 and the sealing 13, 33, 34 from being worn.

In addition, the sealant liquid supplied between the stator 30 and 31 through the atmospheric sealant supply nozzle 45 is pumped by the rotating pumping ring 35-2 and is provided inside the stator 30 and Sealant liquid supplied through the device-side sealant supply nozzle 47 while sealing and lubricating while passing between the sealing ring 33 and the stator 31 and the sealing ring 34 provided on the outside. Is pumped by the rotating impeller 23 and is forcibly pumped between the insert ring 17 and the sleeve 10 to pass between the stator 16 and the sealing 13 to provide a sealing function and a lubricating action. In addition, the stator 16, 30, 31 is in surface contact with the sealing 13, 33, 34 by the elastic force of the springs 22, 27, 28. It keeps the inside in a sealed state, so it can maintain the internal pressure up to 30 ㎏ / ㎠G. Able to be able to use.

In particular, the sealant liquid supplied between the stator 30 and 31 through the atmospheric sealant supply nozzle 45 is pumped by the rotating pumping ring 35-2, and the stator 30 and sealing provided inside are sealed. Between the 33 and the stator 31 and the sealing 34 provided on the outside, the sealant liquid supplied through the device-side sealant supply nozzle 47 is rotated by the impeller 23 rotated. As it is pumped, it is forcibly pumped between the insert ring 17 and the sleeve 10 and passes between the stator 16 and the sealing 13 to obtain a sealing function, a lubricating action, and a cooling function. Even if it rises to 200 degreeC, it can be used.

As described above, in the mechanical sealing apparatus according to the present invention, a sealing means consisting of a sealing and a stator is installed in a single type inside the stuffing box, and the sealing means is double inside the grand ring. The sealing function can be improved by triple sealing means, and the sealant is supplied separately, pumped by different pumping devices, and forcedly circulated, and the stator is closely connected to the sealing by spring force. It keeps the inside in a sealed state by making a surface contact, so that not only the sealing function, the lubricating action and the cooling function can be obtained, but also it can be efficiently used for the device requiring the internal pressure and temperature. It is possible to prevent the phenomenon of mixing with each other by separating and supplying the sealant liquid and forced circulation.

Claims (7)

The gland ring 4 is mounted on the upper surface of the stuffing box 3 on which the inner chamber 3-1 is formed to be sealed and in communication with the sleeve 10, and the sleeve 10 is screwed to the communicating portion of the stuffing box 3 and the gland ring 4. In which the shaft (2) attached to the outer circumference is rotatably installed by (41), and the sealant liquid is supplied and circulated on the outer circumference of the sleeve (10), The lower retainer 20 is detachably mounted to the sleeve 10 in the inner chamber 3-1 of the stuffing box 3, and the upper retainer 35 is integrally mounted on the outer circumference of the sleeve 10, and the shaft 2 In the outer periphery of the), the upper surface of the grand ring (4), the assembly jig (5), (6) (7) is mounted in triplicate to install the shaft (2) on the center line, In the inside of the stuffing box 3 on the device side, a sealing device is provided in the lower side of the lower retainer 20 as a single type, and a sealing device is provided below the upper retainer 35 in the inside of the grand ring 4 on the atmospheric side. Installed in a double shape and the sealing device is installed in triple in the outer side of the shaft 22, The sealant on the device side and the sealer on the air side are separately supplied and circulated with a sealant liquid, And a pumping device is installed on the device side and the atmosphere side to separate the sealant liquid supplied separately to the device side and the atmosphere side to force the pumping. The sealing device according to claim 1, wherein the sealing device is installed in a single type inside the stuffing box (3) on the device side. The sealing 13 is integrally fixed to the upper surface of the flange 10-1 integrally formed at the lower end of the sleeve 10 by the drive pin 15, and the inner surface of the sealing 13 and the outer surface of the sleeve 10 The sleeve packing 12 is sandwiched between to maintain a closed state, In the upper surface of the seal 13, the sleeve 10 is fitted with a snap ring 14 to seal the seal 13 integrally with the flange 10-1, The upper surface of the sealing 13 is inserted and placed into the stator 16, and the upper side of the stator 16 is inserted into the insert 17 which is shot downward by an elastic means using a spring 22, but the insert ring 17 The upper side is to be inserted into the lower retainer 20, The flange 17-1 formed outwardly in the middle of the outer periphery of the insert 17 is connected to the inner surface of the lower retainer 20, and the insert 17 and the lower retainer 20 are disposed above the flange 17-1. Mechanical sealing device, characterized in that the insert packing (18) between the and to be buffered while maintaining the sealed state. The sealing device according to claim 1, wherein the sealing device is provided in a double form inside the grand ring 4 on the atmospheric side. An inner spring groove 4-1 and an outer spring groove 4-2 are formed inside the grand ring 4 to load the springs 28 and 27, respectively, and on the inner insert 32 and the outer insert ( 32-1) inserted and placed, Stators 30 and 31 and sealing 33 and 34 are sequentially inserted into the upper surfaces of the respective inner inserts 32 and the outer inserts 32-1, respectively, The mechanical sealing device characterized in that the sealing (33) and (34) are spaced apart and fixed to the bottom surface of the upper retainer (35) by the drive pins (39) and (39-1). The pumping apparatus on the apparatus side of claim 1, The impeller 23 is integrally mounted on the outer circumference of the sleeve 10 on the same line as the upper end of the lower retainer 20, but the impeller 23 is inserted into the annular recess formed in the outer circumference of the sleeve 10. Mechanical sealing device characterized in that the more firmly mounted. According to claim 1, The atmospheric pumping device, The pumping ring 35-2 is integrally formed on the bottom surface of the upper retainer 35, but is sealed through the packings 36-1 and 36-2 on the inner and outer surfaces of the pumping ring 35-2. ) And the sealing 34 is a mechanical sealing device characterized in that the installation. The method of claim 2, wherein the carbushing means for ejecting the insert ring 17 downward, A spring 22 is placed in a spring set groove formed on an opposite surface of the insert 17 and the lower retainer 20 at an upper side of the insert packing 18, and a spring holder 22-1 is disposed at a lower end of the spring 22. The mechanical sealing device, characterized in that to support the spring (22) while supporting the insert (17) in the downward direction. The method of claim 1, wherein the annular protrusion (35-3) is formed on the inner surface of the upper retainer 35 and the outer cover (35-3) is covered with a set cover (40) to fix the bolt (9-1). The mechanical sealing device, characterized in that the protective support pipe (40-1) integrally formed on the outer side of the bottom to protect the outer surface of the sealing 34 and the outer insert (32-1).