Adjustable mechanical sealing mechanism

Abstract

The utility model relates to the technical field of mechanical sealing pieces, in particular to an adjustable mechanical sealing mechanism which comprises a base, a movable ring is rotatably connected to the front surface of the base, the inner surface of the movable ring is slidably connected to a shaft sleeve, and a first spring is connected to the outer arc surface of the shaft sleeve in a sleeved mode. The outer arc surface of the shaft sleeve is slidably connected with a spring seat, the movable ring is fixedly connected with one end of a first spring, the spring seat is fixedly connected with the other end of the first spring, and an adjusting mechanism is arranged on the spring seat. The adjusting mechanism comprises a groove body, the groove body is formed in the front surface of the spring seat, and a fixing rod is connected to the inner surface of the groove body in a sliding mode. Through the arrangement of the spring seat, the groove body and the fixing rod, after a certain loss of the spring occurs, the distance between the spring seat and the movable ring is adjusted, and the loss of the spring is compressed; and it is guaranteed that the movable ring can continue to rub with the static ring, and the spring utilization maximization function is achieved.

Description

Technical Field

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

[0002] Seals are materials or parts that prevent fluids or solid particles from leaking between adjacent mating surfaces and prevent external impurities such as dust and moisture from invading components inside machinery and equipment.

[0003] After searching, the Chinese publication number is: CN220980327U discloses an adjustable mechanical seal device, including a base, a main shaft, a dynamic ring and a protective ring. The base is provided with a sleeve hole, and the main shaft is inserted into the sleeve hole. The dynamic ring is movably sleeved on the main shaft. Its purpose is: through the provision of the protective ring, when it is necessary to assemble the dynamic ring on the main shaft, the staff can first clamp and fix the protective ring on the inner side of the dynamic ring, and then sleeve the dynamic ring with the protective ring on the main shaft, so that the protective ring can block the dynamic ring and the main shaft, playing a buffering role. Secondly, because the protective ring is made of metal material and fixed by a screw, the protective ring is not easy to roll or break with the rotation of the main shaft. Through the above structure, the protective ring can replace the dynamic ring in contact with the main shaft, playing the role of protecting the dynamic ring, further improving the durability of the dynamic ring and reducing maintenance costs.

[0004] However, since the spring seats of most seals are fixed on the shaft sleeve, and the damage of the seal is mostly due to the loss of elasticity of the spring, the movable block cannot generate friction with the static block when rotating, which leads to damage to the seal. Most spring seats cannot be fixed, which makes it impossible to maximize the utilization of the spring by compressing the spring, resulting in waste. In view of this, we propose an adjustable mechanical sealing mechanism. Utility Model Content

[0005] The purpose of the utility model is to provide an adjustable mechanical sealing mechanism, which solves the problem that the spring seat cannot be adjusted, thereby failing to maximize the use of the spring.

[0006] To achieve the above objectives, the present invention provides the following technical solutions:

[0007] The cam is fixedly mounted on the support frame of the chassis and is adapted to engage said spring, said spring being capable of rotating against said support frame and being capable of rotating against said support frame.

[0008] Preferably, the right surface of the clamping rod is rotatably connected to a rotating rod, the outer arc surface of the rotating rod is fixedly connected to a rotating plate, and the front surface of the rotating plate is rotatably connected to a limiting rod.

[0009] Preferably, a fixing sleeve is fixedly connected to the outer arc surface of the rotating rod, and the outer arc surface of the fixing sleeve is provided with a card slot in a circumferential array.

[0010] Preferably, the front surface of the clamping rod is slidably connected to a tapered rod, the tapered rod is fixedly connected to one end of the spring three, the clamping rod is fixedly connected to the other end of the spring three, and the tapered rod is slidably connected to the clamping slot.

[0011] Preferably, a snap mechanism is provided on the front surface of the clamping rod, and the snap mechanism includes a vertical rod, the front surface of the vertical rod is fixedly connected to a limiting plate, the front surface of the vertical rod is slidably connected to a dynamic module, and the lower surface of the vertical rod is fixedly connected to a static module.

[0012] Preferably, a slide groove is provided on the front surface of the fixed block, and a knife is slidably connected to the inner surface of the slide groove. The knife is fixedly connected to one end of spring four, and the inner surface of the slide groove is fixedly connected to the other end of spring four.

[0013] Preferably, the cross-section of the clamping knife is trapezoidal, and the clamping knife is slidably connected to the movable module.

[0014] By means of the above technical solution, the present invention provides an adjustable mechanical sealing mechanism, which has at least the following beneficial effects:

[0015] (1) The utility model provides a spring seat, a groove body and a fixing rod. After a certain loss of the spring occurs, the distance between the spring seat and the dynamic ring is adjusted to compress the lost spring, thereby ensuring that the dynamic ring can continue to rub against the static ring, thereby realizing the function of maximizing the use of the spring.

[0016] (2) The utility model can facilitate the staff to adjust the spring seat by setting the vertical rod, dynamic module, static module and clamping knife. After pressing the clamping rod downward, the dynamic module squeezes the inclined surface of the clamping knife, so that the clamping knife is separated from between the dynamic module and the static module, and the elastic force of the spring 2 makes the clamping rod separate from the clamping slot, so that the staff can operate conveniently. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings described herein are used to provide a further understanding of the present invention and constitute a part of this application:

[0018] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the overall structure of the adjustment mechanism of the utility model;

[0020] Figure 3 For the utility model Figure 2 A schematic diagram of the structure of part A in the middle;

[0021] Figure 4 For the utility model Figure 2 Schematic diagram of the enlarged structure of part B.

[0022] In the figure: 1. Base; 2. Moving ring; 3. Bushing; 4. Spring seat; 5. Adjusting mechanism; 51. Slot; 52. Fixing rod; 53. Clamping hole; 54. Clamping rod; 55. Fixing block; 56. Spring 2; 6. Spring 1; 7. Rotating rod; 8. Rotating plate; 9. Limiting rod; 10. Fixing sleeve; 11. Clamping slot; 12. Conical rod; 13. Spring 3; 14. Buckle mechanism; 141. Vertical rod; 142. Clamping plate; 143. Moving module; 144. Static module; 15. Slide; 16. Clamping knife; 17. Spring 4. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention. Example 1

[0024] See also Figures 1-4The utility model provides an adjustable mechanical sealing mechanism, including a base 1, the front surface of the base 1 is rotatably connected to a dynamic ring 2, the inner surface of the dynamic ring 2 is slidably connected to the shaft sleeve 3, the outer arc surface of the shaft sleeve 3 is sleeved with a spring 6, the outer arc surface of the shaft sleeve 3 is slidably connected with a spring seat 4, the dynamic ring 2 is fixedly connected to one end of the spring 6, and the spring seat 4 is fixedly connected to the other end of the spring 6, and an adjusting mechanism 5 is provided on the spring seat 4; the adjusting mechanism 5 includes a slot body 51, the front surface of the spring seat 4 is provided with a slot body 51, the inner surface of the slot body 51 is slidably connected to a fixing rod 52, the fixing rod 52 is fixedly connected to the outer arc surface of the shaft sleeve 3, the upper surface of the fixing rod 52 is provided with a clamping hole 53 in a linear array, the inner surface of the clamping hole 53 is slidably connected with a clamping rod 54, the front surface of the spring seat 4 is fixedly connected to a fixing block 55, the lower surface of the clamping rod 54 is penetrated by a fixing block 55 and is slidably connected to the fixing block 55, the outer arc surface of the clamping rod 54 is sleeved with a spring 2 56, the clamping rod 5 The right surface of 4 is rotatably connected with a rotating rod 7, and the outer arc surface of the rotating rod 7 is fixedly connected to the rotating plate 8. The front surface of the rotating plate 8 is rotatably connected to the limiting rod 9, which contacts the lower surface of the fixing block 55 through the limiting rod 9 to ensure that the clamping rod 54 will not move upward due to the elasticity of the spring second 56 and disengage from the inner surface of the clamping hole 53, thereby ensuring that the spring seat 4 is fixed and the stability of the entire seal is ensured. The outer arc surface of the rotating rod 7 is fixedly connected with a fixing sleeve 10, and the outer arc surface of the fixing sleeve 10 is provided with a clamping groove 11 in a circumferential array. The front surface of the clamping rod 54 is slidably connected with a tapered rod 12, and the tapered rod 12 is fixedly connected to one end of the spring third 13. The fixing sleeve 10 is limited by the tapered rod 12 to ensure that when the seal follows the bearing of the equipment, the rotating plate 8 and the rotating rod 7 are limited to ensure that the centrifugal force will not cause the limiting rod 9 to disengage from the bottom of the fixing block 55 and lose the limiting function. The clamping rod 54 is fixedly connected to the other end of the spring third 13, and the tapered rod 12 is slidably connected to the clamping groove 11.

[0025] In this embodiment, by providing the spring seat 4, the groove body 51 and the fixing rod 52, after a certain loss of spring 1-6 occurs, the distance between the spring seat 4 and the dynamic ring 2 is adjusted to compress the lost spring 1-6, ensuring that the dynamic ring 2 can continue to rub against the static ring, thereby realizing the function of maximizing the utilization of spring 1-6. Example 2

[0026] See also Figures 1-4On the basis of the first embodiment, the present invention provides a technical solution: preferably, a snap mechanism 14 is provided on the front surface of the clamping rod 54, and the snap mechanism 14 includes a vertical rod 141, and the front surface of the vertical rod 141 is fixedly connected to the limiting plate 142, and the front surface of the vertical rod 141 is slidably connected to the moving module 143, and the moving module 143 is limited by the limiting plate 142 to limit the moving range of the moving module 143, and the lower surface of the vertical rod 141 is fixedly connected to the static module 144, and the front surface of the fixed block 55 is fixedly connected to the static module 144. A slide groove 15 is provided on the surface, and a knife 16 is slidably connected to the inner surface of the slide groove 15. The knife 16 is fixedly connected to one end of the spring four 17, and the inner surface of the slide groove 15 is fixedly connected to the other end of the spring four 17. The cross-section of the knife 16 is trapezoidal, and the knife 16 is slidably connected to the dynamic module 143. By clamping the knife 16 between the dynamic module 143 and the static module 144, the rod 54 can be limited so that when the entire seal rotates through the bearing, the rod 54 will not fall out of the slot 11.

[0027] In this embodiment, the vertical rod 141, the dynamic module 143, the static module 144 and the clamping knife 16 are provided, which makes it easy for the staff to adjust the spring seat 4. After pressing the clamping rod 54 downward, the dynamic module 143 squeezes the inclined surface of the clamping knife 16, so that the clamping knife 16 is separated from between the dynamic module 143 and the static module 144, and the elastic force of the spring 2 56 is used to make the clamping rod 54 separate from the clamping slot 11, so that the staff can operate conveniently.

[0028] Working principle: when the seal is used for a long time and the spring 16 is worn out too much, the fixing sleeve 10 is rotated clockwise, and the slot 11 provided on the fixing sleeve 10 will squeeze the inclined surface of the cone rod 12, so that the cone rod 12 squeezes the spring 3 13, and after being out of the slot 11, the cone rod 12 is bounced into the next slot 11 by the elastic force of the spring 3 13. At the same time, the fixing sleeve 10 will drive the rotating rod 7 and the rotating plate 8 when rotating. After the rotating plate 8 drives the limiting rod 9 to perform an arc movement, the limiting rod 9 moves out from the lower surface of the fixed block 55, and presses the card rod 54 downward. The card rod 54 drives the vertical rod 141 to move downward, and the inclined surface of the dynamic module 143 The inclined surface of the card knife 16 will be squeezed. After the movable module 143 is held against the limit plate 142 and cannot move, the movable module 143 will squeeze the inclined surface of the card knife 16, causing the card knife 16 to separate to both sides and release the clamping rod 54. The clamping rod 54 is pushed upward by the elastic force of the second spring 56, and drives the vertical rod 141, the limit plate 142, the movable module 143 and the static module 144 to move upward at the same time. When the card knife 16 has not yet been gathered to the middle by the elastic force of the fourth spring 17, the position of the static module 144 is above the card knife 16. The clamping rod 54 is completely separated from the clamping hole 53 by the second spring 56, and the movable spring seat 4 compresses the first spring 6.

[0029] When the spring seat 4 is adjusted, the clamping rod 54 is pressed downward, and the static module 144 will squeeze the inclined surface of the clamping knife 16. Through the elastic force of the spring four 17, the spring four 17 will bounce the clamping knife 16 into between the static module 144 and the dynamic module 143.

[0030] It should be noted that, in this document, relational terms such as first and second, etc., are used only to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that includes a list of elements includes not only those elements but also other elements not explicitly listed, or elements inherent to such process, method, article, or apparatus.

[0031] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An adjustable mechanical sealing mechanism, comprising a base (1), characterized in that: The front surface of the base (1) is rotatably connected to a moving ring (2), the inner surface of the moving ring (2) is slidably connected to the shaft sleeve (3), the outer arc surface of the shaft sleeve (3) is sleeved with a spring 1 (6), the outer arc surface of the shaft sleeve (3) is slidably connected to a spring seat (4), the moving ring (2) is fixedly connected to one end of the spring 1 (6), the spring seat (4) is fixedly connected to the other end of the spring 1 (6), and an adjustment mechanism (5) is provided on the spring seat (4); The adjusting mechanism (5) includes a slot body (51), the front surface of the spring seat (4) is provided with a slot body (51), the inner surface of the slot body (51) is slidably connected to a fixing rod (52), the fixing rod (52) is fixedly connected to the outer arc surface of the shaft sleeve (3), the upper surface of the fixing rod (52) is provided with a clamping hole (53) in a linear array, the inner surface of the clamping hole (53) is slidably connected to a clamping rod (54), the front surface of the spring seat (4) is fixedly connected to a fixing block (55), the lower surface of the clamping rod (54) passes through the fixing block (55) and is slidably connected to the fixing block (55), and the outer arc surface of the clamping rod (54) is sleeved with a spring 2 (56).

2. The adjustable mechanical sealing mechanism according to claim 1, characterized in that: The right surface of the clamping rod (54) is rotatably connected to a rotating rod (7), the outer arc surface of the rotating rod (7) is fixedly connected to a rotating plate (8), and the front surface of the rotating plate (8) is rotatably connected to a limiting rod (9).

3. The adjustable mechanical sealing mechanism according to claim 2, characterized in that: The outer arc surface of the rotating rod (7) is fixedly connected to a fixing sleeve (10), and the outer arc surface of the fixing sleeve (10) is provided with a clamping groove (11) in a circumferential array.

4. The adjustable mechanical sealing mechanism according to claim 3, characterized in that: The front surface of the clamping rod (54) is slidably connected to a tapered rod (12), the tapered rod (12) is fixedly connected to one end of the spring three (13), the clamping rod (54) is fixedly connected to the other end of the spring three (13), and the tapered rod (12) is slidably connected to the clamping slot (11).

5. The adjustable mechanical sealing mechanism according to claim 1, characterized in that: A snap mechanism (14) is provided on the front surface of the clamping rod (54), and the snap mechanism (14) comprises a vertical rod (141), the front surface of the vertical rod (141) is fixedly connected to a limit plate (142), the front surface of the vertical rod (141) is slidably connected to a moving module (143), and the lower surface of the vertical rod (141) is fixedly connected to a static module (144).

6. The adjustable mechanical sealing mechanism according to claim 1, characterized in that: A slide groove (15) is provided on the front surface of the fixed block (55), and a clamping knife (16) is slidably connected to the inner surface of the slide groove (15). The clamping knife (16) is fixedly connected to one end of the spring four (17), and the inner surface of the slide groove (15) is fixedly connected to the other end of the spring four (17).

7. The adjustable mechanical sealing mechanism according to claim 6, characterized in that: The cross-section of the clamping knife (16) is trapezoidal in shape, and the clamping knife (16) is slidably connected to the movable module (143).

Images