Integrated mechanical seal

Abstract

The utility model belongs to the technical field of mechanical seals, and particularly relates to an integrated mechanical seal which comprises a base frame, multiple sets of connecting holes are formed in the two ends of the base frame, buffers are connected in the connecting holes, multiple sets of pin shafts are annularly connected to the outer side of the base frame at equal intervals, and two sets of moving ring components are symmetrically connected to the two ends of the base frame. The movable ring component is arranged on the base frame and acts along the outer side of the base frame under the action of external force, the two sets of static ring components and the two sets of movable ring components are arranged in a one-to-one correspondence mode, and the buffer serves as a buffer end and replaces a buffer spring to provide stable elastic potential energy and kinetic energy to alternately, reliably and stably push the static ring and the movable ring to form reliable sealing fit, so that the situation of sealing failure is avoided; and the buffers are annularly arranged at equal intervals, so that uniform stress and uniform distribution of elastic force at each point position of the moving ring are ensured, the compensation effect is excellent, and movement and deviation are avoided.

Description

Technical Field

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

[0002] Mechanical seals are one of the basic mechanical components with high precision and complex structure. They are key components of various pumps, reaction reactors, turbine compressors, submersible motors and other equipment. Their sealing performance and service life depend on many factors, such as selection, machine accuracy, correct installation and use, etc.

[0003] Mechanical seal is a shaft sealing device for rotating machinery. For example, 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, mechanical seals are the most important shaft sealing method in these equipment in the world today.

[0004] Existing mechanical seals mostly use springs as force-bearing parts. During long-term use, the spring rigidity is easily damaged, and the static ring is locked during movement. At this time, the elastic force provided by the spring cannot reliably and stably push the static ring and the dynamic ring to form a reliable seal, resulting in seal failure. For this reason, an integrated mechanical seal is provided. Utility Model Content

[0005] The purpose of this section is to summarize some aspects of the embodiments of the utility model and briefly introduce some preferred embodiments. Some simplifications or omissions may be made in this section and the abstract of the specification and the name of the utility model of this application to avoid blurring the purpose of this section, the abstract of the specification and the name of the utility model, and such simplifications or omissions cannot be used to limit the scope of the utility model.

[0006] Therefore, the purpose of the utility model is to provide an integrated mechanical seal, in which the buffer serves as a buffer end, replacing the buffer spring to provide stable elastic potential energy and kinetic energy alternation, reliably and stably pushing the static ring and the dynamic ring to form a reliable sealing fit, avoiding sealing failure, and the buffer is arranged in a ring shape with equal distances to ensure that each point of the dynamic ring is subjected to uniform force, the elastic force is evenly distributed, the compensation effect is excellent, and there will be no movement or deviation.

[0007] In order to solve the above technical problems, according to one aspect of the present invention, the present invention provides the following technical solutions:

[0008] An integrated mechanical seal, comprising:

[0009] As a base frame connected to the base, multiple groups of connection holes are set at both ends of the base frame, the buffers are connected in the connection holes, and multiple groups of pins are connected to the outside of the base frame in a circular shape with equal distances;

[0010] There are two groups of dynamic ring parts, which are symmetrically connected to the two ends of the base frame and move along the outer side of the base frame under the action of external force;

[0011] There are two groups of stationary ring components, and the two groups of stationary ring components are arranged in one-to-one correspondence with the dynamic ring components.

[0012] As a preferred solution of the integrated mechanical seal described in the utility model, the plurality of groups of connecting holes are arranged in an annular shape with equal distances along the outer side of the base frame with the axis of the base frame as the center of the circle.

[0013] As a preferred solution of an integrated mechanical seal described in the utility model, the dynamic ring component includes a dynamic ring slidably connected to the outside of the base frame, the inner side of the dynamic ring is connected to the end of the buffer, and a sealing groove is opened in the dynamic ring, and a sealing ring is connected in the sealing groove.

[0014] As a preferred solution of the integrated mechanical seal described in the utility model, wherein: a plurality of groups of movable grooves are provided on the outer side of the movable ring, and the movable grooves are arranged in one-to-one correspondence with the pin shafts.

[0015] As a preferred solution of the integrated mechanical seal described in the utility model, the stationary ring component includes a stationary ring seat connected to the dynamic ring, the stationary ring is sealed inside the stationary ring seat, and an O-ring is connected to the outside of the stationary ring.

[0016] As a preferred solution of the integrated mechanical seal described in the utility model, an internal thread groove is provided in the stationary ring seat, and an external thread groove threadedly matched with the internal thread groove is provided on the outer side of the stationary ring.

[0017] As a preferred solution of an integrated mechanical seal described in the utility model, a spring switch is connected to the outer side of the stationary ring seat, two groups of linkage blocks that cooperate with the spring switch are symmetrically and movably connected inside the stationary ring seat, and a positioning hole that cooperates with the linkage block is opened on the stationary ring.

[0018] Compared with the prior art, the utility model has the following beneficial effects:

[0019] 1. The buffer acts as a buffer end, replacing the buffer spring to provide stable elastic potential energy and kinetic energy alternately, reliably and stably pushing the static ring and the dynamic ring to form a reliable sealing match, avoiding the situation of sealing failure. The buffer is arranged in a circular shape with equal distances, ensuring that the force at each point of the dynamic ring is uniform, the elastic force is evenly distributed, the compensation effect is excellent, and there will be no movement or deviation;

[0020] 2. The stationary ring seat and the stationary ring are connected by screwing together the internal thread groove and the external thread groove, and the overall stationary ring structure is converted into two sub-assembly structures. When a certain section is damaged or deformed in the future, there is no need to replace the entire section, thus reducing resource waste. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solution of the implementation of the utility model, the utility model will be described in detail below in combination with the drawings and detailed implementation. Obviously, the drawings described below are only some implementations of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative labor. Among them:

[0022] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0023] Figure 2 This is a schematic diagram of the explosion structure of the utility model;

[0024] Figure 3 For this utility model Figure 2 Schematic diagram of some structures;

[0025] Figure 4 It is a partial structural schematic diagram of the stationary ring component of the utility model.

[0026] In the figure: 100 base frame, 110 connecting hole, 111 buffer, 120 pin shaft, 200 dynamic ring component, 210 dynamic ring, 211 sealing groove, 212 sealing ring, 220 movable groove, 300 static ring component, 310 static ring seat, 311 internal thread groove, 312 spring switch, 312a linkage block, 320 static ring, 321 external thread groove, 322 positioning hole, 330 O-ring. DETAILED DESCRIPTION

[0027] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below with reference to the accompanying drawings.

[0028] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention. Therefore, the present invention is not limited to the specific implementation methods disclosed below.

[0029] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the implementation of the present invention, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0030] In order to make the purpose, technical solution and advantages of the present invention more clear, the implementation mode of the present invention will be further described in detail below with reference to the accompanying drawings.

[0031] The utility model provides an integrated mechanical seal. Figure 1-4 , including a base frame 100, a dynamic ring component 200 and a static ring component 300;

[0032] Please continue reading Figure 1-3 , as a base frame 100 for connecting the base, multiple groups of connecting holes 110 are provided at both ends of the base frame 100, and the multiple groups of connecting holes 110 are arranged in a circular shape with equal distance along the outer side of the base frame 100 with the axis of the base frame 100 as the center of the circle, and the buffer 111 is connected in the connecting hole 110, and multiple groups of pins 120 are connected in a circular shape with equal distance on the outer side of the base frame 100, and the buffer 111 is provided as a buffer end, which replaces the buffer spring to provide stable elastic potential energy and kinetic energy alternately, and reliably and stably pushes the static ring 320 and the dynamic ring 210 to form a reliable sealing match, avoiding the occurrence of sealing failure, and the buffer 111 is arranged in a circular shape with equal distance, ensuring that the force at each point of the dynamic ring 210 is uniform, the elastic force is evenly distributed, the compensation effect is excellent, and there will be no movement and deviation;

[0033] Please continue reading Figure 1-3 There are two groups of dynamic ring components 200, which are symmetrically connected to the two ends of the base frame 100 and move along the outer side of the base frame 100 under the action of external force;

[0034] The dynamic ring component 200 includes a dynamic ring 210 slidably connected to the outside of the base frame 100, the inner side of the dynamic ring 210 is connected to the end of the buffer 111, and a sealing groove 211 is opened in the dynamic ring 210, and a sealing ring 212 is connected in the sealing groove 211. The outer side of the dynamic ring 210 is provided with multiple groups of movable grooves 220, and the movable grooves 220 are arranged one by one with the pin shaft 120;

[0035] Please continue reading Figure 1-4 There are two groups of stationary ring components 300, and the two groups of stationary ring components 300 are arranged in one-to-one correspondence with the dynamic ring components 200;

[0036] The stationary ring component 300 includes a stationary ring seat 310 connected to the dynamic ring 210, a stationary ring 320 is sealedly connected inside the stationary ring seat 310, an O-ring 330 is connected to the outside of the stationary ring 320, an internal thread groove 311 is provided inside the stationary ring seat 310, an external thread groove 321 threadedly matched with the internal thread groove 311 is provided on the outside of the stationary ring 320, a snap switch 312 is connected to the outside of the stationary ring seat 310, two groups of linkage blocks 312a that are linked with the snap switches 312 are symmetrically and movably connected inside the stationary ring seat 310, and a positioning hole 322 that is clipped and matched with the linkage block 312a is provided on the stationary ring 320, the snap switch 312 drives the linkage block 312a to move from the stationary ring seat 310, and cooperates with the slot 322. After being screwed together, the stationary ring 320 is further limited to prevent it from rotating and displacing under the action of external force;

[0037] The internal thread groove 311 and the external thread groove 321 are threadedly matched to connect the stationary ring seat 310 and the stationary ring 320, so that the whole stationary ring structure is converted into two sub-assembly structures. When a certain section is damaged or deformed later, it is not necessary to replace the whole structure, thus reducing resource waste.

[0038] Working principle: When the utility model is in use, the buffer 111 is used as a buffer end to replace the buffer spring to provide stable elastic potential energy and kinetic energy alternately, and reliably and stably push the static ring 320 and the dynamic ring 210 to form a reliable sealing match to avoid sealing failure. The buffer 111 is arranged in an annular shape with equal distances to ensure that the force at each point of the dynamic ring 210 is uniform, the elastic force is evenly distributed, the compensation effect is excellent, and there will be no movement and deviation.

[0039] Furthermore, by screwing the internal thread groove 311 and the external thread groove 321 together, the stationary ring seat 310 and the stationary ring 320 are connected, and the overall stationary ring structure is converted into two sub-assembly structures. When a certain section is damaged or deformed later, there is no need to replace the entire structure, thus reducing waste of resources.

[0040] Although the present invention has been described above with reference to the embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present invention. In particular, as long as there is no structural conflict, the various features in the embodiments disclosed in the present invention may be used in combination with each other in any manner, and the fact that these combinations are not exhaustively described in this specification is only for the sake of omitting space and saving resources. Therefore, the present invention is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. An integrated mechanical seal, characterized in that: include: A base frame (100) serving as a connection base, with multiple groups of connection holes (110) being provided at both ends of the base frame (100), a buffer (111) being connected inside the connection holes (110), and multiple groups of pins (120) being connected to the outer side of the base frame (100) in an annular shape and at equal intervals; The moving ring components (200) are provided in two groups, and the two groups of moving ring components (200) are symmetrically connected to two ends of the base frame (100), and move along the outer side of the base frame (100) under the action of external force; The stationary ring components (300) are provided in two groups, and the two groups of stationary ring components (300) are arranged in a one-to-one correspondence with the moving ring components (200).

2. An integrated mechanical seal according to claim 1, characterized in that: The plurality of groups of connection holes (110) are arranged in an equidistant manner in a ring shape along the outer side of the base frame (100) with the axis of the base frame (100) as the center of the circle.

3. An integrated mechanical seal according to claim 2, characterized in that: The dynamic ring component (200) comprises a dynamic ring (210) slidably connected to the outside of the base frame (100), the inner side of the dynamic ring (210) is connected to the end of the buffer (111), and a sealing groove (211) is provided in the dynamic ring (210), and a sealing ring (212) is connected in the sealing groove (211).

4. An integrated mechanical seal according to claim 3, characterized in that: The outer side of the movable ring (210) is provided with a plurality of groups of movable grooves (220), and the movable grooves (220) are arranged in a one-to-one correspondence with the pin shafts (120).

5. An integrated mechanical seal according to claim 4, characterized in that: The stationary ring component (300) comprises a stationary ring seat (310) connected to the moving ring (210); the stationary ring (320) is sealably connected inside the stationary ring seat (310); and an O-type sealing ring (330) is connected outside the stationary ring (320).

6. An integrated mechanical seal according to claim 5, characterized in that: An internal thread groove (311) is provided in the stationary ring seat (310), and an external thread groove (321) threadedly engaged with the internal thread groove (311) is provided on the outside of the stationary ring (320).

7. An integrated mechanical seal according to claim 6, characterized in that: The outer side of the stationary ring seat (310) is connected to a spring switch (312), and two groups of linkage blocks (312a) that are linked to the spring switch (312) are symmetrically and movably connected inside the stationary ring seat (310), and a positioning hole (322) that is locked and matched with the linkage blocks (312a) is opened on the stationary ring (320).

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