CN218992169U

CN218992169U - Mechanical seal coupling

Info

Publication number: CN218992169U
Application number: CN202223181226.5U
Authority: CN
Inventors: 张明伟; 付芳; 陈宣伟
Original assignee: Tianjin Longchuang Hengsheng Industrial Co ltd
Current assignee: Tianjin Longchuang Hengsheng Industrial Co ltd
Priority date: 2022-11-29
Filing date: 2022-11-29
Publication date: 2023-05-09
Anticipated expiration: 2032-11-29

Abstract

The utility model discloses a mechanical seal coupler, which belongs to the technical field of couplers and comprises a cylindrical intermediate body, wherein connecting flanges are arranged at two ends of the intermediate body, connecting sleeves are fixedly arranged on the connecting flanges, the connecting sleeves are coaxial with the connecting flanges, a plurality of flat keys are uniformly arranged in the connecting sleeves along the circumferential direction, through holes are formed in the flat keys in a penetrating manner along the radial direction of the connecting sleeves, limiting pins are inserted into the through holes, a transmission shaft is inserted into the connecting sleeves, a key groove is formed in the transmission shaft, the key groove is matched with the flat keys, limiting holes are further formed in the key groove, and when the transmission shaft is inserted into the limiting positions in the connecting sleeves. The transmission that can strong moment of torsion mutually supporting through keyway and flat key can prevent effectively to skid through a plurality of fixture blocks and draw-in groove cooperation, and the transmission shaft is deviate from when spacing hole, spacer pin and fastening ring's cooperation can prevent to follow axial atress to fixed orifices and buffer hole and the buffer sleeve that set up in turn have reduced the field installation degree of difficulty of shaft coupling, have improved work efficiency.

Description

Mechanical seal coupling

Technical Field

The utility model belongs to the technical field of couplings, and particularly relates to a mechanical seal coupling.

Background

The coupling is also called a coupling, and is a mechanical component for firmly connecting a driving shaft and a driven shaft in different mechanisms to rotate together and transmitting motion and torque. The existing coupler is generally composed of two parts, which are respectively arranged on two shafts for power transmission, and the two parts are connected to realize the transmission of force and torque. For example, chinese patent publication No. CN216078033U discloses a mechanical seal coupling, which comprises two output shafts, wherein the outer surfaces of the two output shafts are respectively sleeved with a mechanical seal device, the mechanical seal device comprises a first moving ring, a first groove is formed in the inner side of the first moving ring, a first limiting block is fixedly connected to one side of the first moving ring, and a spring is fixedly connected to one side of the first moving ring.

However, the existing coupling has the following disadvantages:

1 carry out the biography power of power through mutual extrusion friction of two spring elasticity, skid easily in the use, it is relatively poor to the transmission effect of torsion, and transmission efficiency is lower when using.

2 the axial load effect is poor and the shaft is easily separated from the coupling when the shaft is subjected to axial force.

And 3, the installation accuracy requirement is higher, and the field installation difficulty is high.

It is therefore desirable to design a mechanically sealed coupling that addresses these issues.

Disclosure of Invention

The utility model aims to solve the problems of poor torque bearing and axial load effect and difficult field installation of the traditional coupler.

In order to solve the technical problems, the utility model adopts the following technical scheme:

the utility model provides a mechanical seal shaft coupling, includes cylindrical midbody the both ends of midbody all are provided with flange, fixedly on the flange be provided with the adapter sleeve, the adapter sleeve with flange is coaxial, evenly be provided with a plurality of parallel keys along circumference in the adapter sleeve, follow on the parallel key the adapter sleeve radially runs through and is provided with the through-hole, the spacer pin has been inserted in the through-hole, the adapter sleeve inserts and is provided with the transmission shaft, the keyway has been seted up on the transmission shaft, the keyway with parallel key assorted, still be provided with spacing hole in the keyway, works as after the transmission shaft inserts the inside extreme position of adapter sleeve, spacing hole with the through-hole is coaxial, the one end of spacer pin passes behind the through-hole be located in the spacing hole the outside of adapter sleeve still the cover is equipped with the fastening ring, just the inner wall of fastening ring with the other end slip laminating of spacer pin.

Preferably, a plurality of clamping grooves are formed in the two end faces of the intermediate in the circumferential direction, a plurality of clamping blocks are arranged on the end faces, attached to the intermediate, of the connecting flange, and the clamping blocks are in one-to-one correspondence with the clamping grooves.

By the arrangement, the bearing capacity of the transmission torque is improved, slipping is prevented, and stability and reliability of power transmission are ensured.

Preferably, a plurality of fixing holes and buffer holes are formed in the outer side of the connecting sleeve on the connecting flange, a plurality of fixing holes and a plurality of buffer Kong Jiaoti are formed in the fixing holes, a buffer sleeve is sleeved in the buffer holes, a plurality of connecting holes are uniformly formed in the middle body in the circumferential direction, the number of the connecting holes is equal to the sum of the fixing holes and the buffer holes, and when the connecting flange is connected with the middle body, the fixing holes on the connecting flange located on two sides of the middle body are opposite to the buffer Kong Jiaoti.

By the arrangement, the field installation difficulty of the coupler can be reduced on the basis of ensuring the accuracy.

Preferably, the joint surfaces of the limiting pin and the fastening ring are inclined planes, the included angle between the inclined planes and the horizontal plane is a, and the value range of a is 30 degrees < a <60 degrees.

By the arrangement, downward pressure can be applied to the limiting pin after the fastening ring is in contact with the limiting pin, so that the end part of the limiting pin is ensured to be always inserted into the limiting hole, and the transmission shaft is prevented from being separated from the connecting sleeve.

Preferably, a sealing groove is further formed in the inner wall of the connecting sleeve, a sealing ring is arranged in the sealing groove in a fit mode, and when the transmission shaft is inserted into the connecting sleeve, the sealing ring is tightly attached to the outer wall of the transmission shaft.

By the arrangement, the equipment can be prevented from being worn due to the fact that sundries enter the equipment.

Preferably, the intermediate is made of metal or rubber.

By the arrangement, the bearing capacity of torque can be ensured by metal, and flexible connection can be realized by rubber.

Preferably, the fastening ring is connected with the connecting sleeve through threaded fit, and the buffer sleeve and the sealing ring are made of rubber.

So set up, the installation of the holding ring of being convenient for with to the fixed of spacer pin, buffer sleeve and the sealing washer of rubber material make the installation more convenient.

The utility model has the advantages and positive effects that:

according to the utility model, the two transmission shafts are correspondingly inserted into the connecting sleeve on the connecting flange, so that the connecting shaft can be in strong torque transmission through the mutual matching of the key grooves and the flat keys, slipping can be effectively prevented through the matching of the clamping blocks and the clamping grooves on the connecting flange, the transmission shafts can be prevented from falling off when the transmission shafts are stressed along the axial direction through the matching of the limiting holes, the limiting pins and the fastening rings, the use of the coupling in different occasions can be met by the intermediates of different materials, the application range is wide, and the field installation difficulty of the coupling is reduced through the fixing holes, the buffering holes and the buffering sleeves which are alternately arranged, and the working efficiency is improved.

Drawings

In order to more clearly illustrate the embodiments of the utility model or the technical solutions of the prior art, the drawings that are necessary for the description of the embodiments or the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the utility model and that other drawings can be obtained according to these drawings without inventive faculty for a person skilled in the art.

FIG. 1 is a schematic diagram of an explosive structure of the present utility model;

FIG. 2 is a schematic view of the assembled structure of the present utility model;

FIG. 3 is a schematic view of the assembled internal structure of the present utility model;

fig. 4 is an enlarged view of the structure at a in fig. 3.

The reference numerals are explained as follows:

1. a transmission shaft; 2. a key slot; 3. a limiting hole; 4. a connecting flange; 5. connecting sleeves; 6. a flat key; 7. a through hole; 8. sealing grooves; 9. a seal ring; 10. a limiting pin; 11. a fastening ring; 12. a connection hole; 13. a clamping block; 14. an intermediate; 15. a clamping groove; 16. a fixing hole; 17. a buffer sleeve; 18. buffering holes; 19. a connecting screw; 20. and (5) fastening the nut.

Detailed Description

In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "lateral", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are merely for convenience in describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model. Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature. In the description of the present utility model, unless otherwise indicated, the meaning of "a plurality" is two or more.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the above terms in the present utility model can be understood by those of ordinary skill in the art in a specific case.

The utility model is further described below with reference to the accompanying drawings:

example 1

As shown in fig. 1-4, a mechanical seal coupling comprises a cylindrical intermediate body 14, the stress of the cylindrical intermediate body 14 is more balanced in the rotating process, connecting flanges 4 are arranged at two ends of the intermediate body 14, the two connecting flanges 4 are connected through bolts, a connecting sleeve 5 is fixedly arranged on the connecting flange 4, the connecting sleeve 5 is coaxial with the connecting flange 4, a plurality of flat keys 6 are uniformly arranged in the connecting sleeve 5 along the circumferential direction, through holes 7 are radially formed in the flat keys 6 in a penetrating manner along the connecting sleeve 5, a limiting pin 10 is inserted into the through holes 7, a transmission shaft 1 is inserted into the connecting sleeve 5, a key groove 2 is formed in the transmission shaft 1, the key groove 2 is matched with the flat keys 6, a limiting hole 3 is further formed in the key groove 2, after the transmission shaft 1 is inserted into the limiting position in the connecting sleeve 5, the limiting hole 3 is coaxial with the through holes 7, one end of the limiting pin 10 penetrates through the through holes 7 and then is positioned in the limiting hole 3, a fastening ring 11 is further sleeved on the outer side of the connecting sleeve 5, and the inner wall of the fastening ring 11 is in sliding fit with the other end of the limiting pin 10.

Specifically, a plurality of clamping grooves 15 are formed in the two end faces of the intermediate body 14 along the circumferential direction, a plurality of clamping blocks 13 are arranged on the end face, attached to the intermediate body 14, of the connecting flange 4, the clamping blocks 13 are in one-to-one correspondence with the clamping grooves 15, the bearing capacity of transmission torque is improved, slipping is prevented, and stability and reliability of power transmission are guaranteed.

Specifically, be provided with a plurality of fixed orificess 16 and buffer hole 18 on flange 4 in the outside of adapter sleeve 5, a plurality of fixed orificess 16 and a plurality of buffer hole 18 set up in turn, buffer hole 18 endotheca is equipped with buffer cover 17, evenly be provided with a plurality of connecting holes 12 in circumference on the midbody 14, the quantity of connecting holes 12 equals the sum of fixed orificess 16 and buffer hole 18, when flange 4 is connected with midbody 14, the fixed orificess 16 and the buffer hole 18 on flange 4 that are located midbody 14 both sides are alternately opposite, so the setting can reduce the field installation degree of difficulty of shaft coupling on the basis of guaranteeing the precision.

Specifically, the joint surfaces of the limiting pin 10 and the fastening ring 11 are inclined planes, the included angle between the inclined planes and the horizontal plane is a, and the value range of a is 30 degrees < a <60 degrees, so that downward pressure can be applied to the limiting pin 10 after the fastening ring 11 is contacted with the limiting pin 10, the end part of the limiting pin 10 is ensured to be always inserted into the limiting hole 3, and the transmission shaft 1 is prevented from being separated from the connecting sleeve 5; in this embodiment, the contact surface of the limiting pin 10 and the fastening ring 11 forms an angle of 45 ° with the horizontal plane.

Specifically, still offered seal groove 8 on the inner wall of adapter sleeve 5, the laminating is provided with sealing washer 9 in the seal groove 8, and when adapter sleeve 5 was inserted to transmission shaft 1, sealing washer 9 can closely laminate with transmission shaft 1 outer wall, so set up can prevent debris entering and lead to the wearing and tearing of equipment.

Specifically, the intermediate body 14 is made of metal or rubber, so that the metal can ensure the bearing capacity of torque, and the rubber can realize flexible connection.

Specifically, the fastening ring 11 is connected with the connecting sleeve 5 through threaded fit, the buffer sleeve 17 and the sealing ring 9 are made of rubber, the installation of the fastening ring 11 and the fixation of the limiting pin 10 are facilitated, and the buffer sleeve 17 and the sealing ring 9 made of rubber enable the installation to be more convenient.

The working procedure of this embodiment is: when in use, a worker respectively connects the transmission shafts 1 on two sides with an output shaft to be installed on the equipment with an input shaft, then the connecting flanges 4 are sleeved on the transmission shafts 1 through the connecting sleeves 5, the flat keys 6 in the connecting sleeves 5 are inserted into the key grooves 2, then the intermediate body 14 is installed between the two connecting flanges 4, after the intermediate body 14 is placed between the two connecting flanges 4, the two connecting flanges 4 are relatively moved, the clamping blocks 13 on the two connecting flanges 4 are correspondingly clamped in the clamping grooves 15 on the intermediate body 14 one by one, meanwhile, the two connecting flanges 4 are ensured that the fixing holes 16 are opposite to the buffer holes 18, then the limiting hole 3 is aligned with the through hole 7, one end of the limiting pin 10 is inserted into the limiting hole 3 through the through hole 7, the fastening ring 11 is rotated, and the fastening ring 11 is connected with the connecting sleeve 5 through threads, so that the fastening ring 11 moves axially along the connecting sleeve 5 when the fastening ring 11 is rotated, the limiting pin 10 is firmly fixed in the through hole 7 and the limiting hole 3 through mutually matched inclined planes so as to avoid detachment after axial force is avoided, finally the connecting screw 19 is inserted from one end of the fixing hole 16, penetrates out after penetrating through the buffer sleeve 17, and the fastening nut 20 is screwed on the connecting screw to complete connection fixation of the two connecting flanges 4 and the intermediate body 14.

In this embodiment, the operator may select the intermediate 14 made of metal or the intermediate 14 made of rubber according to the equipment parameters, the application, the use scene, and the like, so as to satisfy different connection performances.

The foregoing describes one embodiment of the present utility model in detail, but the disclosure is only a preferred embodiment of the present utility model and should not be construed as limiting the scope of the utility model. All equivalent changes and modifications within the scope of the present utility model are intended to be covered by the present utility model.

Claims

1. A mechanical seal coupling, characterized in that: including cylindrical midbody (14) the both ends of midbody (14) all are provided with flange (4), fixedly on flange (4) be provided with adapter sleeve (5), adapter sleeve (5) with flange (4) are coaxial, evenly be provided with a plurality of flat keys (6) along circumference in adapter sleeve (5), follow on flat key (6) adapter sleeve (5) radially run through and are provided with through-hole (7), be provided with spacer pin (10) in through-hole (7), be provided with transmission shaft (1) in adapter sleeve (5), set up keyway (2) on transmission shaft (1), keyway (2) with flat key (6) assorted, still be provided with spacing hole (3) in keyway (2), work as after transmission shaft (1) are inserted behind the inside extreme position of adapter sleeve (5), spacing hole (3) with through-hole (7) are coaxial, one end of spacer pin (10) is located behind through-hole (7) in spacing ring (3) and the other end is in spacing ring (11) the other end of adapter sleeve (11) is equipped with the clamp ring.

2. A mechanical seal coupling according to claim 1, wherein: a plurality of clamping grooves (15) are formed in the two end faces of the intermediate body (14) along the circumferential direction, a plurality of clamping blocks (13) are arranged on the end faces, attached to the intermediate body (14), of the connecting flange (4), and the clamping blocks (13) are in one-to-one correspondence with the clamping grooves (15).

3. A mechanical seal coupling according to claim 1, wherein: the connecting flange (4) is provided with a plurality of fixing holes (16) and buffer holes (18) on the outer side of the connecting sleeve (5), the fixing holes (16) and the buffer holes (18) are alternately arranged, the buffer holes (18) are sleeved with the buffer sleeves (17), the intermediate body (14) is circumferentially and uniformly provided with a plurality of connecting holes (12), the number of the connecting holes (12) is equal to the sum of the fixing holes (16) and the buffer holes (18), and when the connecting flange (4) is connected with the intermediate body (14), the fixing holes (16) and the buffer holes (18) on the connecting flange (4) on two sides of the intermediate body (14) are alternately opposite.

4. A mechanical seal coupling according to claim 1, wherein: the joint surfaces of the limiting pin (10) and the fastening ring (11) are inclined planes, the included angle between the inclined planes and the horizontal plane is a, and the value range of a is 30 degrees < a <60 degrees.

5. A mechanical seal coupling according to claim 3, wherein: the inner wall of the connecting sleeve (5) is also provided with a sealing groove (8), a sealing ring (9) is arranged in the sealing groove (8) in a fitting way, and when the transmission shaft (1) is inserted into the connecting sleeve (5), the sealing ring (9) is tightly attached to the outer wall of the transmission shaft (1).

6. A mechanical seal coupling according to claim 1, wherein: the intermediate (14) is made of metal or rubber.

7. A mechanical seal coupling according to claim 5, wherein: the fastening ring (11) is connected with the connecting sleeve (5) through threaded fit, and the buffer sleeve (17) and the sealing ring (9) are made of rubber.