Efficient circulating cooling mechanical sealing device

Abstract

The utility model relates to the field of mechanical sealing, and discloses an efficient circulating cooling mechanical sealing device which comprises a connecting base and a shaft sleeve, the bottom end of the outer wall of the shaft sleeve is elastically connected with a movable ring through a reset spring, two sets of threaded grooves are formed in the side wall of the shaft sleeve, and positioning screws penetrate through the inner walls of the threaded grooves of the shaft sleeve and are in threaded connection with the threaded grooves. The outer wall of the bottom end of the movable ring makes contact with a static ring, a sealing ring is arranged on the surface of the static ring, an adjusting mechanism is arranged on the surface of the movable ring and comprises a fixing column, and the surface of the sliding block is fixedly connected with a shielding block. According to the utility model, the rotating block is rotated to drive the threaded rod to rotate, so that the sliding block performs threaded movement on the surface of the threaded rod, and the movement of the sliding block not only can push the shaft sleeve to descend and adjust the compression degree of the reset spring, but also can drive the shielding cover to rotate to shield the vertical groove of the fixed column and prevent dust from entering to influence the adjustment.

Description

TECHNICAL FIELD

[0001] The utility model relates to mechanical seal field especially relates to a kind of high-efficiency circulating cooling mechanical seal device. BACKGROUND

[0002] In the field of mechanical seal, mechanical seal device is the key component to ensure the normal operation of mechanical equipment, and its performance directly affects the reliability and efficiency of the equipment.

[0003] For some mechanical equipment that needs to operate in harsh conditions such as high temperature and high pressure, such as chemical pumps, compressors, etc., high-efficiency circulating cooling mechanical seal device is particularly important, which can effectively prevent medium leakage and protect the working environment and personnel safety.

[0004] At present, the existing high-efficiency circulating cooling mechanical seal device has some shortcomings: the structure design of some sealing devices is relatively fixed, and the compression force of the spring cannot be flexibly adjusted according to different working conditions and sealing requirements. In some special working conditions, the sealing ring is not tight enough, resulting in poor sealing effect. Therefore, a high-efficiency circulating cooling mechanical seal device is proposed to solve the above problems. UTILITY MODEL CONTENTS

[0005] In order to make up for the above shortcomings, the utility model provides a kind of high-efficiency circulating cooling mechanical seal device, which aims at improving the problem that the existing technology cannot be flexibly adjusted according to different working conditions and sealing requirements, resulting in poor sealing effect in some special working conditions.

[0006] In order to achieve the above purpose, the utility model adopts the following technical scheme: a kind of high-efficiency circulating cooling mechanical seal device, including connecting seat and shaft sleeve, the bottom end of the outer wall of the shaft sleeve is elastically connected with dynamic ring by reset spring, the sidewall of the shaft sleeve is provided with two groups of thread grooves, the inner wall of the shaft sleeve thread groove is penetrated and is connected with the positioning screw by screw thread, the outer wall of the bottom end of the dynamic ring is contacted with static ring, the surface of the static ring is provided with sealing ring, the surface of the dynamic ring is provided with adjusting mechanism;

[0007] The adjusting mechanism includes fixed column, the top end of the outer wall of the fixed column is rotatably connected with rotating block, the inner wall of the fixed column is rotatably connected with threaded rod, the outer wall of the fixed column is rotatably connected with shielding cover, the inner wall of the fixed column is penetrated and is connected with sliding block, the surface of the sliding block is fixedly connected with shielding block.

[0008] As a further description of the above technical scheme:

[0009] The outer wall of the bottom end of the connecting seat is fixedly connected with flange plate, the inner side wall of the connecting seat is fixedly connected with cooling circulation pipe, the outer arc surface of the connecting seat is provided with air duct, the surface of the connecting seat is fixedly connected with two groups of joints.

[0010] As a further description of the above technical solutions:

[0011] The bottom end of the outer wall of the sealing ring is in contact with the inner side wall of the connecting seat, and the outer wall of the static ring is in contact with the inner side wall of the connecting seat.

[0012] As a further description of the above technical solutions:

[0013] The outer wall of the dynamic ring is in contact with the inner side wall of the connecting seat, and the fixed column is fixedly connected to the top end of the outer wall of the dynamic ring.

[0014] As a further description of the above technical solutions:

[0015] One end of the reset spring is fixedly connected to the surface of the top end of the dynamic ring, and the other end of the reset spring is fixedly connected to the top end of the outer wall of the shaft sleeve.

[0016] As a further description of the above technical solutions:

[0017] The rotating block is fixedly connected to the rotating center axis of the threaded rod, the surface of the shielding cover is provided with an annular groove, and the sliding block penetrates and is slidingly connected to the inner wall of the annular groove.

[0018] As a further description of the above technical solutions:

[0019] An internal thread is formed in the center of the sliding block, and the sliding block is threadedly connected to the surface of the threaded rod.

[0020] As a further description of the above technical solutions:

[0021] The bottom end of the outer wall of the sliding block is in contact with the bottom end of the outer wall of the shaft sleeve, the surface of the shaft sleeve is provided with a guide groove, and the outer wall of the shielding cover is in contact with the inner wall of the guide groove.

[0022] The utility model has the advantages of the following beneficial effects:

[0023] 1. In the utility model, the threaded rod is driven to rotate by rotating the rotating block, so that the sliding block moves in threads on the surface of the threaded rod. The movement of the sliding block not only pushes the shaft sleeve to descend and adjusts the compression degree of the reset spring, but also drives the shielding cover to rotate and shields the vertical groove of the fixed column to prevent dust from entering and affecting the adjustment.

[0024] 2. In the utility model, the reasonable arrangement of the cooling circulating pipe and the air duct enables external air to preliminarily dissipate heat inside the sealing device, and the cooling water takes away the heat generated during the operation of the static ring and the sealing ring through circulation, thereby realizing continuous cooling of the sealing components, ensuring that the sealing device operates at a suitable temperature, and prolonging the service life thereof. BRIEF DESCRIPTION OF DRAWINGS

[0025] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a high-efficiency circulating cooling mechanical seal device proposed in this utility model;

[0026] Figure 2 This is a schematic diagram of the connection seat, dynamic ring, and stationary ring of a high-efficiency circulating cooling mechanical seal device proposed in this utility model in a separated state.

[0027] Figure 3 This is a partial cross-sectional view of the fixing column and shield of the high-efficiency circulating cooling mechanical seal device proposed in this utility model;

[0028] Figure 4 This is a schematic diagram of the fixed column, shield, and slider in the separated state of a high-efficiency circulating cooling mechanical seal device proposed in this utility model.

[0029] Legend:

[0030] 1. Connecting seat; 2. Flange; 3. Bushing; 4. Cooling circulation pipe; 5. Air duct; 6. Connector; 7. Return spring; 8. Moving ring; 9. Stationary ring; 10. Sealing ring; 11. Positioning screw; 12. Adjusting mechanism; 121. Fixed column; 122. Shield; 123. Threaded rod; 124. Sliding block; 125. Shielding block; 126. Rotating block. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0032] Reference Figure 1 - Figure 3The utility model provides an embodiment: a kind of high efficiency circulating cooling mechanical seal device, including connecting seat 1 and shaft sleeve 3, the bottom end of the outer wall of shaft sleeve 3 is elastically connected with dynamic ring 8 by reset spring 7, one end of reset spring 7 is fixedly connected on the surface of the top end of dynamic ring 8, the other end of reset spring 7 is fixedly connected on the top end of the outer wall of shaft sleeve 3, the effect of reset spring 7 is to the position of dynamic ring 8 is elastically supported, so that dynamic ring 8 can push static ring 9 to let sealing ring 10 always adhere to the inside of connecting seat 1, to carry out sealing operation, the outer wall of dynamic ring 8 is in contact with the inside side wall of connecting seat 1, the side wall of shaft sleeve 3 is provided with two groups of thread grooves, the inner wall of shaft sleeve 3 thread groove is penetrated and is connected with positioning screw rod 11, by special tool rotation two groups of positioning screw rod 11, so that the inner wall of shaft sleeve 3 is penetrated, so that the whole can be fixed in shaft etc. Position, the outer wall of the bottom end of dynamic ring 8 is in contact with static ring 9, the surface of static ring 9 is provided with sealing ring 10, the bottom end of the outer wall of sealing ring 10 is in contact with the inside side wall of connecting seat 1, the outer wall of static ring 9 is in contact with the inside side wall of connecting seat 1, the surface of dynamic ring 8 is provided with adjusting mechanism 12;

[0033] Referring to Figure 3 And Figure 4 Adjusting mechanism 12 includes fixed column 121, the surface of shaft sleeve 3 is provided with guide groove, the outer wall of shielding cover 122 is in contact with the inner wall of guide groove, shielding cover 122 moves in the inner wall of the guide groove of shaft sleeve 3, so that the position of shaft sleeve 3 can be adjusted, so that the elasticity of reset spring 7 can be adjusted, so that dynamic ring 8 and static ring 9 are more closely adsorbed, fixed column 121 is fixedly connected on the top end of the outer wall of dynamic ring 8, rotatingly connected with rotating block 126 on the top end of the outer wall of fixed column 121, rotatingly connected with threaded rod 123 in the inner wall of fixed column 121, the outer wall of fixed column 121 is rotatably connected with shielding cover 122, shielding cover 122 can only rotate on the outer wall of fixed column 121, and the annular groove part of shielding cover 122 always has part and vertical groove of fixed column 121 are aligned.

[0034] Referring to Figure 3 And Figure 4The inner wall of the fixed column 121 is penetrated and slidably connected with a sliding block 124, a vertical groove is arranged on the surface of the fixed column 121 and is matched with the shape of the sliding block 124, so that the sliding block 124 is guided by the inner wall and the vertical groove of the fixed column 121 as a whole and can only move up and down, an inner thread is arranged at the center of the sliding block 124, the sliding block 124 is threadedly connected to the surface of the threaded rod 123, and the threaded rod 123 is rotated to enable the sliding block 124 to threadedly move on the surface thereof, the surface of the sliding block 124 is fixedly connected with a shielding block 125, the shielding block 125 is arranged to shield the position where the annular groove of the shielding cover 122 is aligned with the vertical groove of the fixed column 121, so that dust and the like are prevented from being adsorbed on the surface of the threaded rod 123 through the gap and affecting subsequent adjustment and use, the rotating block 126 is fixedly connected with the rotating center axis of the threaded rod 123, an annular groove is arranged on the surface of the shielding cover 122, the sliding block 124 penetrates and is slidably connected to the inner wall of the annular groove, and the surface of the sliding block 124 moves in the annular groove of the shielding cover 122 when the sliding block 124 moves up and down on the inner wall of the fixed column 121, so that the shielding cover 122 is driven to rotate as a whole around the outer wall of the fixed column 121, and the vertical groove of the fixed column 121 can be shielded as a whole, the bottom end of the outer wall of the sliding block 124 is in contact with the bottom end of the outer wall of the shaft sleeve 3, and the sliding block 124 drives the position of the shaft sleeve 3 to descend when the sliding block 124 is threadedly lowered, so that the compression degree of the return spring 7 is adjusted.

[0035] With reference to Figure 1 and Figure 2 The outer wall of the bottom end of the connecting seat 1 is fixedly connected with a flange plate 2, the flange plate 2 is arranged and cooperates with a bolt to enable the whole to be fixed at the mechanical driving shaft, the inner side wall of the connecting seat 1 is fixedly connected with a cooling circulation pipe 4, the outer arc surface of the connecting seat 1 is provided with a plurality of air ducts 5, the external air can pass through the air ducts 5 to enter the inside of the connecting seat 1 to dissipate heat, the surface of the connecting seat 1 is fixedly connected with two groups of joints 6, the positions of the two groups of joints 6 are connected with the water inlet and the water outlet of the cooling circulation pipe 4, so that the cooling water entering the inside of the cooling circulation pipe 4 from the upper end joint 6 is circulated to cool and lower the temperature generated by the static ring 9 and the sealing ring 10 during work, and enters the external cooling equipment from the lower group of joints 6.

[0036] Working principle: adjusting mechanism 12 is used to adjust the elastic force of reset spring 7, and then enhance the adsorption tightness between dynamic ring 8 and static ring 9, fixed column 121 is fixed at the top of the outer wall of dynamic ring 8, rotating block 126 is fixedly connected with the rotating center axis of threaded rod 123, rotating rotating block 126 drives threaded rod 123 to rotate, since sliding block 124 is screw connected on the surface of threaded rod 123 and can only move up and down under the guidance of the inner wall of fixed column 121 and vertical groove, so when threaded rod 123 rotates, sliding block 124 will move on the surface of threaded rod 123, the blocking block 125 fixed on the surface of sliding block 124 can block the position of the annular groove of shielding cover 122 aligned with the vertical groove of fixed column 121, prevent dust from being adsorbed on the surface of threaded rod 123 to affect the adjustment, when sliding block 124 moves up and down on the inner wall of fixed column 121, it will move in the annular groove of shielding cover 122, drive shielding cover 122 to rotate around the outer wall of fixed column 121, and shield the vertical groove of fixed column 121, when sliding block 124 is screwed down, it will push the position of shaft sleeve 3 to be lowered, adjust the compression degree of reset spring 7, make the adsorption between dynamic ring 8 and static ring 9 more closely, and improve the sealing effect.

[0037] The inner side wall of the connecting seat 1 is fixed with a cooling circulating pipe 4, and the outer arc surface is provided with an air duct 5. Two groups of connectors 6 on the surface of the connecting seat 1 are connected with the water inlet and the water outlet of the cooling circulating pipe 4 respectively. External air enters the inside of the connecting seat 1 through the air duct 5 to preliminarily dissipate heat. At the same time, cooling water enters the inside of the cooling circulating pipe 4 from the upper end connector 6 to circulate. The cooling water in the cooling circulating pipe 4 absorbs the heat generated by the static ring 9 and the sealing ring 10 during work, and then enters the external cooling equipment from the lower group of connectors 6 to be cooled. In this way, the sealing components are continuously cooled, the sealing device is ensured to work at a proper temperature, and the service life thereof is prolonged.

[0038] Finally, it should be noted that: the above only for preferred embodiments of the present application, and not for limiting the present application, although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, it still can modify the technical solutions recorded in the foregoing embodiments, or make equivalent replacement for part of the technical features, any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application, should be included in the protection scope of the present application.

Claims

1. A high efficiency circulating cooling mechanical seal device comprising a connecting seat (1) and a shaft sleeve (3), characterized in that: The bottom end of the outer wall of the shaft sleeve (3) is elastically connected with a movable ring (8) through a reset spring (7), the side wall of the shaft sleeve (3) is provided with two groups of threaded grooves, the inner wall of the threaded groove of the shaft sleeve (3) penetrates and is threadedly connected with a positioning screw rod (11), the outer wall of the bottom end of the movable ring (8) is in contact with a static ring (9), the surface of the static ring (9) is provided with a sealing ring (10), and the surface of the movable ring (8) is provided with an adjusting mechanism (12). The adjusting mechanism (12) comprises a fixed column (121), the top end of the outer wall of the fixed column (121) is rotatably connected with a rotating block (126), the inner wall of the fixed column (121) is rotatably connected with a threaded rod (123), the outer wall of the fixed column (121) is rotatably connected with a shielding cover (122), the inner wall of the fixed column (121) penetrates and is slidably connected with a sliding block (124), and the surface of the sliding block (124) is fixedly connected with a shielding block (125).

2. A high efficiency circulating cooling mechanical seal apparatus as claimed in claim 1, wherein: The bottom end of the outer wall of the connecting seat (1) is fixedly connected with a flange plate (2), the inner side wall of the connecting seat (1) is fixedly connected with a cooling circulation pipe (4), the outer arc surface of the connecting seat (1) is provided with an air duct (5), and the surface of the connecting seat (1) is fixedly connected with two groups of connectors (6).

3. A high efficiency circulating cooling mechanical seal apparatus as claimed in claim 1, wherein: The bottom end of the outer wall of the sealing ring (10) is in contact with the inner side wall of the connecting seat (1), and the outer wall of the static ring (9) is in contact with the inner side wall of the connecting seat (1).

4. A high efficiency circulating cooling mechanical seal apparatus as claimed in claim 1, wherein: The outer wall of the movable ring (8) is in contact with the inner side wall of the connecting seat (1), and the fixed column (121) is fixedly connected to the top end of the outer wall of the movable ring (8).

5. A high efficiency circulating cooling mechanical seal apparatus as claimed in claim 1, wherein: One end of the reset spring (7) is fixedly connected to the surface of the top end of the movable ring (8), and the other end of the reset spring (7) is fixedly connected to the top end of the outer wall of the shaft sleeve (3).

6. A high efficiency circulating cooling mechanical seal apparatus as claimed in claim 1, wherein: The rotating center shaft of the rotating block (126) and the threaded rod (123) is fixedly connected, the surface of the shielding cover (122) is provided with an annular groove, and the sliding block (124) penetrates and is slidably connected to the inner wall of the annular groove.

7. A high efficiency circulating cooling mechanical seal apparatus as claimed in claim 1, wherein: An inner thread is formed in the center of the sliding block (124), and the sliding block (124) is threadedly connected to the surface of the threaded rod (123).

8. A high efficiency circulating cooling mechanical seal apparatus as claimed in claim 1, wherein: The bottom end of the outer wall of the sliding block (124) is in contact with the bottom end of the outer wall of the shaft sleeve (3), the surface of the shaft sleeve (3) is provided with a guide groove, and the outer wall of the shielding cover (122) is in contact with the inner wall of the guide groove (3).

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