Dry gas sealing structure device for vertical high-speed sand mill

Abstract

The utility model relates to the technical field of vertical high-speed sand mills, and discloses a dry gas sealing structure device for a vertical high-speed sand mill, which comprises an inner gland. Through the arrangement of the moving ring, the static ring, the O-shaped ring, the spring, the clamping spring and the shaft sleeve, the sealing end face of the rotating moving ring is ground and polished, a special fluid spiral dynamic pressure groove is machined in the sealing face, when the moving ring rotates, sealing gas is sucked into the dynamic pressure groove, and the sealing gas is sucked into the dynamic pressure groove from the outer diameter to the inner diameter. Inlet gas is compressed through the static ring seal to form high pressure, the static ring seal is pushed away under the pressure, flowing gas forms a thin gas film between two sealing faces, the gas film has certain rigidity, the gas dynamic pressure effect is enhanced, the higher the anti-interference capacity of dry gas seal is, the more stable and more reliable sealing operation is achieved, the operation cycle of equipment is prolonged, and the service life of the equipment is prolonged. And reliable equipment precision is provided for the high-speed sand mill.

Description

TECHNICAL FIELD

[0001] The utility model relates to vertical high -speed sand mill technical field, specifically is a vertical high -speed sand mill dry gas seal structure device. BACKGROUND

[0002] Dry gas seal is a kind of non-contact mechanical seal, and the sealing surface is most typical with spiral groove type, is an advanced rotary shaft seal dynamic sealing structure at present, its performance is reliable, service life is long, power consumption is low, and can adapt to high temperature, high pressure, high speed and various strong corrosive medium harsh working conditions, therefore, is used in petroleum, chemical industry, medicine, steel, metallurgy, aviation and other industries.

[0003] With the national vigorous support to new energy, according to the market demand of high-speed sand mill, a kind of vertical high-speed sand mill dry gas seal structure device is developed, the dry gas seal end face is non-contact seal, and the sealing performance is good, the service life is long, the sealing oil system is not needed, the sealing power consumption is less, the operation and maintenance cost is low, it is the most advanced sealing form currently used.

[0004] The existing seal is mechanical seal, needs to add heat exchanger to carry out sealing liquid cooling, causes dry grinding of sealing surface after sealing liquid leakage, sealing leakage increases after dry grinding, leads to sealing failure, increases the cost of replacing mechanical seal for customer, affects company benefit capacity, therefore, a kind of vertical high-speed sand mill dry gas seal structure device is provided to solve the above problems. INVENTION CONTENTS

[0005] The technical problem to be solved by the utility model is to provide a vertical high-speed sand mill dry gas seal structure device in view of the deficiencies in the prior art.

[0006] To solve the above technical problems, the technical scheme adopted by the utility model is as follows: a vertical high-speed sand mill dry gas seal structure device, including inner gland, the inner gland is provided with static ring, the static ring and the inner gland are provided with spring, the static ring is provided with snap spring, the sealing surface between the inner gland and the static ring is provided with dynamic ring, after the dynamic ring is polished to the required degree, fluid dynamic pressure groove is processed on the alloy dynamic ring end face, the groove is engraved by laser, the groove type adopts spiral line, the depth is 0.008mm, the number of spiral grooves is 12, and the dynamic ring sealing surface groove type is forward and reverse, which provides reliable equipment precision for high-speed sand mill, the inner gland is provided with outer gland, the inner gland is provided with stainless steel joint, the outer gland is provided with plug, the plug is provided with matching plug, the inner gland and the outer gland are installed on the equipment sealing cavity, and the inner gland, the outer gland and the equipment sealing cavity are respectively provided with upper shaft sleeve and lower shaft sleeve.

[0007] Preferably, the sealing ring O-ring is arranged at the step of the static ring.

[0008] Preferably, the inner gland is provided with a gland O-ring at the gland neck.

[0009] Preferably, the upper shaft sleeve and the lower shaft sleeve are both provided with a shaft sleeve O-ring.

[0010] Preferably, the inner gland and the outer gland are connected by an internal hexagonal cylindrical head screw two.

[0011] Preferably, the inner gland, the outer gland and the equipment sealed cavity are connected by an internal hexagonal cylindrical head screw one.

[0012] The above technical scheme can bring the following beneficial effects:

[0013] 1. The dry gas sealing structure device for the vertical high-speed sand mill is provided with a rotating ring, a static ring, an O-ring, a spring, a clamping spring and a shaft sleeve, the rotating ring sealing end face is subjected to grinding and polishing treatment, and a special fluid spiral dynamic pressure groove is processed on the sealing surface, when the rotating ring rotates, the sealing gas is sucked into the dynamic pressure groove from the outer diameter to the inner diameter, the entering gas is compressed to form high pressure in the static ring sealing, the static ring sealing is pushed away under the pressure, the flowing gas forms a very thin gas film between the two sealing surfaces, the gas film has a certain rigidity, the gas dynamic pressure effect is enhanced, the dry gas sealing anti-interference ability is stronger, the sealing operation is more stable and reliable, the operation cycle of the equipment is prolonged, and reliable equipment precision is provided for the high-speed sand mill. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is an assembly view of the utility model;

[0015] Figure 2 It is an A-towards groove view of the utility model;

[0016] Figure 3 It is a B-towards groove view of the utility model;

[0017] Figure 4 It is a K-towards schematic view of the utility model.

[0018] In the drawing: 1, inner gland; 2, static ring O-ring; 3, static ring; 4, upper shaft sleeve; 5, gland O-ring; 6, clamping spring; 7, spring; 8, internal hexagonal cylindrical head screw two; 9, lower shaft sleeve; 10, outer gland; 11, plug; 12, shaft sleeve O-ring; 13, rotating ring; 14, internal hexagonal cylindrical head screw one; 15, stainless steel joint; 16, plug joint. DETAILED DESCRIPTION

[0019] With reference to the drawings of the embodiments of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described. Obviously, the described embodiments are only part of the embodiments of the present application, but not all the embodiments. Based on the embodiments of the present application, all the other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the present application.

[0020] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only intended to facilitate the description of the present application and simplify the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation of the present application.

[0021] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "setting" should be understood broadly, for example, it can be fixedly connected, set, or detachably connected, set, or integrally connected, set. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0022] In addition, the terms "first" and "second" are only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first" and "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "several" is two or more, unless otherwise explicitly specified and limited.

[0023] Please refer to Figures 1-4The utility model discloses an embodiment is: a vertical high -speed sand mill is with dry gas seal structure device, including inner gland 1, be provided with static ring 3 on inner gland 1, static ring O ring 2 is provided with static ring 3's sealing ring step, be provided with spring 7 between static ring 3 and inner gland 1, be provided with snap spring 6 on static ring 3, be provided with dynamic ring 13 between the sealing surface of inner gland 1 and static ring 3, after grinding and polishing to reach the requirement, fluid dynamic pressure groove is processed in alloy dynamic ring end face, groove is adopted laser engraving, groove type adopts helical line, depth is 0.008mm, and the number of helical groove is 12, and dynamic ring 13 sealing surface groove type is positive and negative, and provide reliable equipment precision for high -speed sand mill, be provided with outer gland 10 on inner gland 1, be provided with gland O ring 5 in inner gland 1 stop mouth, be connected through inner hexagonal cylindrical head screw two 8 between inner gland 1 and outer gland 10, be provided with stainless steel joint 15 on inner gland 1, be provided with plug 11 on outer gland 10, be provided with matching plug 16 at plug 11, inner gland 1 and outer gland 10 are installed on equipment sealing cavity, be connected through inner hexagonal cylindrical head screw one 14 between inner gland 1, outer gland 10 and equipment sealing cavity, inner gland 1, outer gland 10 and equipment sealing cavity are provided with upper shaft sleeve 4 and lower shaft sleeve 9 respectively, all be provided with shaft sleeve O ring 12 on upper shaft sleeve 4 and lower shaft sleeve 9, through the dynamic ring 13, static ring 3, O ring, spring 7, snap spring 6 and shaft sleeve of setting, rotate dynamic ring 13 sealing end face and be ground and polished handle, and process special fluid helical dynamic pressure groove on sealing surface, when dynamic ring 13 rotates, sealed gas is inhaled into dynamic pressure groove, from the outer diameter to the inside, the blocking throttling effect of sealing weir, the gas entering forms high pressure in static ring 3 sealing compression, under the pressure, static ring 3 sealing is pushed away, and the flowing gas forms a very thin gas film between two sealing surfaces, and the gas film has certain rigidity, enhances gas dynamic pressure effect, and the stronger dry gas seal anti-interference ability is, and the more stable and reliable sealing operation is, prolongs the operation cycle of equipment, provides reliable equipment precision for high -speed sand mill.

[0024] Working principle: first seal parts clean, clean place assembly dry gas seal, first assembly inner gland 1 component, install spring 7 and place in the inner gland 1 hole, static ring O ring 2 surface smears a small amount of lubricating grease installation in static ring 3 seal ring step, then install static ring 3 to inner gland 1, good anti rotation pin hole can after use clamp spring 6 static ring 3, assembly outer gland 10 component, alcohol spray on white dust cloth wipe static ring 3 and dynamic ring 13 sealing surface, wait for alcohol to evaporate again with clean white dust cloth wipe dynamic ring 13 and static ring 3 sealing surface, then put dynamic ring 13 and place in inner gland 1 and static ring 3 sealing surface, at this time, special attention should be paid to; Put dynamic ring 13 must determine the direction of rotation, so as to avoid misplacement direction leading to sealing failure, place gland O ring 5 to inner gland 1 stop mouth, put inner gland 1 component buckle on outer gland 10 component and good screw hole, with internal hexagonal cylindrical head screw two 8 even locking, install plug 11, plug 16 and stainless steel joint 15, joint thread outer circle winding a little raw material belt to ensure the sealing of thread, install shaft sleeve 4 on the equipment, place shaft sleeve O ring 12, then install the sealing assembly to the equipment sealing cavity, good screw hole, and even locking with internal hexagonal cylindrical head screw one 14, install shaft sleeve O ring 12, sleeve lower shaft sleeve 9, equipment manufacturer again with nut locking shaft sleeve, through the sealing nitrogen gas of auxiliary system, detect static pressure leakage condition meets the requirements of JB / T11289-2012 dry gas seal technical conditions can.

[0025] The utility model provides a kind of dry gas seal structure device for vertical high-speed sand mill, and the method and approach of the specific implementation of this technical scheme are many, above-mentioned is only preferred implementation mode of the utility model, it should be pointed out, for the ordinary skilled person in the art, without departing from the principle of the utility model, still can make several improvements and refinements under the premise, these improvements and refinements also should be regarded as the protection scope of the utility model. The components not explicitly in the embodiment can be realized by prior art.

Claims

1. A dry gas seal structure device for vertical high-speed sand mill, comprising an inner gland (1), characterized in that: The inner gland (1) is provided with a static ring (3), a spring (7) is arranged between the static ring (3) and the inner gland (1), a snap spring (6) is arranged on the static ring (3), a dynamic ring (13) is arranged between the sealing surface of the inner gland (1) and the static ring (3), the inner gland (1) is provided with an outer gland (10), the inner gland (1) is provided with a stainless steel joint (15), the outer gland (10) is provided with a plug (11), the plug (11) is provided with a matching plug (16), the inner gland (1) and the outer gland (10) are installed on the equipment sealing cavity, and the inner gland (1), the outer gland (10) and the equipment sealing cavity are respectively provided with an upper shaft sleeve (4) and a lower shaft sleeve (9).

2. A dry gas seal structure device for a vertical high-speed sand mill according to claim 1, characterized in that: The static ring (3) is provided with a static ring O-shaped ring (2) at the sealing ring step.

3. A dry gas seal structure device for a vertical high-speed sand mill according to claim 1, characterized in that: The inner gland (1) is provided with a gland O-shaped ring (5) at the stopper.

4. A dry gas seal structure device for a vertical high-speed sand mill according to claim 1, characterized in that: The upper shaft sleeve (4) and the lower shaft sleeve (9) are both provided with a shaft sleeve O-shaped ring (12).

5. A dry gas seal structure device for a vertical high-speed sand mill according to claim 1, characterized in that: The inner gland (1) and the outer gland (10) are connected through a inner hexagonal cylindrical head screw two (8).

6. A dry gas seal structure device for a vertical high-speed sand mill according to claim 1, characterized in that: The inner gland (1), the outer gland (10) and the equipment sealing cavity are connected through an inner hexagonal cylindrical head screw one (14).

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