Mechanically sealed multi-spring extruded gland device

Abstract

The utility model provides mechanical seal's multiple spring extrusion type gland device relates to the field of gland. Mechanical seal's multiple spring extrusion type gland device, including the shaft sleeve, the outside of shaft sleeve is provided with sealing mechanism, sealing mechanism includes the locating ring and the protection ring, the inner wall of locating ring and protection ring and the movable joint of shaft sleeve, the outer surface of protection ring and locating ring sliding connection, the inner wall of protection ring is equipped with the damping rod, the fixed end of damping rod and locating ring fixed connection. Mechanical seal's multiple spring extrusion type gland device sets up through the cooperation of sealing mechanism spare part, thereby realized can carry out stable sealing, through this optimization, can buffer and reduce the vibration when the shaft rotates, effectively avoid the situation of the leakage caused by the partial misplacement wear of the sealing surface of static ring and dynamic ring due to the shaft installation inclination or excessive vibration, makes the spring elastic force distribution uneven.

Description

Technical Field

[0001] This utility model relates to a capping device, specifically a mechanically sealed multi-spring compression capping device, belonging to the field of capping technology. Background Technology

[0002] A gland is a key sealing element widely used at the interfaces of mechanical components such as valves, pumps, and rotating shafts. Its main function is to enclose the packing or directly form a sealing cavity with the shaft / valve stem to prevent the internal medium from leaking out and to prevent external contaminants from entering. The gland applies adjustable pressure through tightening bolts to ensure that the packing and moving parts maintain appropriate tight contact, achieving an effective dynamic or static sealing effect.

[0003] A search revealed a high-temperature resistant mechanical seal disclosed in Chinese Patent No. CN221974291U, which includes a gland movably connected to the side surface of a bushing, a circulation pipe fixedly connected inside the gland, a compressor fixedly connected to the upper surface of the gland, a positioning ring movably connected to the side surface of the bushing, a protective shell movably connected to the side surface of the positioning ring, and a spring fixedly connected to the upper end face of the positioning ring.

[0004] While the above solution can achieve sealing, there is still room for optimization in practical applications. Because the spring in the current device is centered by the limiting rod, if the shaft is installed at an angle or there is excessive vibration, the spring force will be unevenly distributed, which can easily lead to local misalignment and wear of the sealing surfaces of the rotating ring and the stationary ring, potentially causing leakage. To address this issue, we have provided a multi-spring compression gland device for mechanical seals. Utility Model Content

[0005] The purpose of this invention is to provide a multi-spring compression type gland device for mechanical seals to solve the above-mentioned problems. This addresses the issue in the prior art where uneven distribution of spring force due to shaft tilting or excessive vibration leads to localized wear of the sealing surfaces of the rotating and stationary rings, causing leakage.

[0006] This utility model is achieved through the following technical solution: a multi-spring compression type cap device with mechanical seal, including a bushing, a sealing mechanism is provided on the outside of the bushing, the sealing mechanism includes a positioning ring and a protective ring, the inner walls of the positioning ring and the protective ring are movably connected to the bushing, and the outer surface of the protective ring is slidably connected to the positioning ring;

[0007] The inner wall of the protective ring is fitted with a damping rod, the fixed end of the damping rod is fixedly connected to the positioning ring, the telescopic end of the positioning ring is fixedly connected to a clamping ring, the outer surface of the damping rod is fitted with a spring, the two ends of the spring are fixedly connected to the protective ring and the clamping ring respectively, the outer surface of the clamping ring is fixedly connected to a limit block, and the inner wall of the protective ring is provided with a limit groove that matches the limit block.

[0008] Preferably, a stationary ring is movably connected to the outer surface of the bushing, and a sealing ring is fixedly connected to the outer surface of the stationary ring. The sealing performance can be effectively ensured by setting the sealing ring.

[0009] Preferably, a rotating ring is movably connected to one end of the stationary ring, and a second sealing ring is fixedly connected to the outer surface of the rotating ring. A first sealing groove adapted to the first sealing ring is opened on the outer surface of the rotating ring, and a second sealing groove adapted to the second sealing ring is opened on the outer surface of the protective ring. By setting the rotating ring and the second sealing ring, the sealing effect can be effectively improved.

[0010] Preferably, a gland body is movably connected to the outer surface of the bushing. The gland body covers the stationary ring and the moving ring, and is used for positioning and fastening.

[0011] Preferably, a sealing ring three is fixedly connected to the outer surface of the pressure cap body, and a sealing groove three that matches the sealing ring three is opened on the outer surface of the stationary ring. By setting the sealing groove three, the sealing effect of the sealing ring three can be improved.

[0012] Preferably, a cooling mechanism is provided on the outside of the bushing. The cooling mechanism includes a cooling ring. The inner wall of the cooling ring is movably connected to the bushing. A flexible tube is fixedly connected to the outer surface of the cooling ring. The end of the flexible tube away from the cooling ring passes through a positioning ring and is fixedly connected to a protective ring. The cooling ring is filled with refrigerant, which can exchange heat with the refrigerant in the flexible tube.

[0013] Preferably, a refrigeration device is fixedly connected to the outer surface of the refrigeration ring, and a connecting pipe is fixedly connected to the output end of the refrigeration device. The end of the connecting pipe away from the refrigeration device is fixedly connected to the refrigeration ring. A temperature sensor is installed inside the refrigeration ring, and when it senses that the temperature inside the refrigeration ring has increased, it will immediately send a command to the refrigeration device to turn it on.

[0014] This utility model provides a multi-spring compression type capping device for mechanical seals, which has the following beneficial effects:

[0015] 1. The multi-spring compression gland device of this mechanical seal achieves stable sealing through the coordinated arrangement of components in the sealing mechanism. This optimization can buffer and reduce the vibration during shaft rotation, effectively avoiding leakage caused by uneven distribution of spring force due to shaft installation tilt or excessive vibration, which leads to local misalignment and wear of the sealing surfaces of the stationary ring and the rotating ring.

[0016] 2. The multi-spring compression gland device of this mechanical seal achieves the function of cooling and heat dissipation of the sealing components through the coordinated arrangement of the components in the cooling mechanism. This design can effectively prevent leakage problems caused by deformation of the sealing components due to frictional heat from shaft rotation, thereby improving the safety and reliability of the device. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0018] Figure 2 This is a three-dimensional structural diagram of the sealing mechanism of this utility model;

[0019] Figure 3 This is a schematic diagram of the three-dimensional structure of the clamping ring of this utility model;

[0020] Figure 4 This is a three-dimensional structural diagram of the cooling mechanism of this utility model.

[0021] [Explanation of Key Component Symbols]

[0022] 1. Bushing;

[0023] 2. Sealing mechanism; 201. Positioning ring; 202. Protective ring; 203. Damping rod; 204. Clamping ring; 205. Spring; 206. Limiting block; 207. Limiting groove; 208. Stationary ring; 209. Sealing ring one; 210. Moving ring; 211. Sealing ring two; 212. Sealing groove one; 213. Sealing groove two; 214. Gland body; 215. Sealing ring three; 216. Sealing groove three;

[0024] 3. Cooling mechanism; 301. Refrigeration ring; 302. Hose; 303. Refrigeration equipment; 304. Connecting pipe. Detailed Implementation

[0025] This utility model provides a multi-spring compression type capping device with a mechanical seal.

[0026] Please see Figure 1 , Figure 2 and Figure 3 The device includes a bushing 1, and a sealing mechanism 2 is provided on the outside of the bushing 1. The sealing mechanism 2 includes a positioning ring 201 and a protective ring 202. The inner walls of the positioning ring 201 and the protective ring 202 are movably connected to the bushing 1, and the outer surface of the protective ring 202 is slidably connected to the positioning ring 201. A sealing kit is installed between the positioning ring 201 and the protective ring 202, which can effectively prevent leakage.

[0027] A damping rod 203 is sleeved on the inner wall of the protective ring 202. The fixed end of the damping rod 203 is fixedly connected to the positioning ring 201. The telescopic end of the positioning ring 201 is fixedly connected to the clamping ring 204. A spring 205 is sleeved on the outer surface of the damping rod 203. The two ends of the spring 205 are fixedly connected to the protective ring 202 and the clamping ring 204 respectively. The damping rod 203 and the spring 205 can provide motion resistance and effectively reduce and buffer the vibration generated by the shaft rotation.

[0028] The outer surface of the retaining ring 204 is fixedly connected to the limiting block 206, and the inner wall of the protective ring 202 is provided with a limiting groove 207 that matches the limiting block 206. Through the coordinated action of the retaining ring 204, the limiting block 206 and the limiting groove 207, the elasticity of all the springs 205 can be balanced, ensuring the tight fit between the stationary ring 208 and the moving ring 210.

[0029] A stationary ring 208 is movably connected to the outer surface of the bushing 1. A sealing ring 209 is fixedly connected to the outer surface of the stationary ring 208. A rotating ring 210 is movably connected to one end of the stationary ring 208. A sealing ring 211 is fixedly connected to the outer surface of the rotating ring 210. A sealing groove 212 that matches the sealing ring 209 is opened on the outer surface of the rotating ring 210. A sealing groove 213 that matches the sealing ring 211 is opened on the outer surface of the protective ring 202. The sealing effect can be effectively improved by setting the sealing ring 209, the rotating ring 210 and the sealing ring 211.

[0030] The outer surface of the bushing 1 is movably connected to the gland body 214, which covers the stationary ring 208 and the moving ring 210. The gland body 214 is used for positioning and fastening. The outer surface of the gland body 214 is fixedly connected to the sealing ring 215. The outer surface of the stationary ring 208 is provided with a sealing groove 216 that matches the sealing ring 215. The sealing groove 216 can improve the sealing effect of the sealing ring 215.

[0031] Please refer to it again. Figure 1 , Figure 2 , Figure 3 and Figure 4 The bushing 1 is provided with a cooling mechanism 3. The cooling mechanism 3 includes a cooling ring 301. The inner wall of the cooling ring 301 is movably connected to the bushing 1. The outer surface of the cooling ring 301 is fixedly connected to a hose 302. The end of the hose 302 away from the cooling ring 301 passes through the positioning ring 201 and is fixedly connected to the protective ring 202. The cooling ring 301 is filled with refrigerant, which can exchange heat with the refrigerant in the hose 302. The hose 302 is made of high-toughness heat-resistant material, so it can be stretched and withstand high temperatures.

[0032] A refrigeration device 303 is fixedly connected to the outer surface of the cooling ring 301. A connecting pipe 304 is fixedly connected to the output end of the refrigeration device 303. The end of the connecting pipe 304 away from the refrigeration device 303 is fixedly connected to the cooling ring 301. A temperature sensor is installed inside the cooling ring 301. When the temperature inside the cooling ring 301 is sensed to rise, it will immediately send a command to the refrigeration device 303 to turn it on. The refrigeration device 303 is a common electrical device in the prior art. This application will not elaborate on its model and internal structure.

[0033] The structural diagrams of the components shown in the attached figures are exemplary. The specific implementation should be adapted and optimized by considering the functional requirements, assembly conditions and process limitations in the actual application scenario, and adjusting the structural parameters, size specifications and connection methods accordingly.

[0034] Working principle: First, the stationary ring 208 and the rotating ring 210 are installed on the outer surface of the bushing 1. Under the combined action of fluid pressure and the elasticity of the spring 205, they are sealed together. At the same time, the sealing rings 209, 211, and 215 provide multiple seals. During the sealing process, the damping rod 203 and the spring 205 work together to buffer and reduce the vibration during shaft rotation. In addition, the clamping ring 204 applies force to the protective ring 202, effectively preventing uneven distribution of the spring force of the spring 205 due to shaft tilt or excessive vibration. This can lead to localized misalignment and wear of the sealing surfaces of the stationary ring 208 and the rotating ring 210, causing leakage. Secondly, a temperature sensor is installed inside the cooling ring 301. When the sensor detects an increase in temperature inside the cooling ring 301, it can send a command to the cooling device 303, causing the cooling device 303 to turn on and cool the cooling ring 301. Through the synergistic effect of the hose 302, heat exchange can be effectively carried out on the sealing components in the device, thereby effectively preventing leakage caused by deformation of the sealing components due to frictional heat from shaft rotation, and thus improving the safety and reliability of the device.

[0035] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A multi-spring compression type gland device for mechanical seals, comprising a bushing (1), characterized in that: The bushing (1) is provided with a sealing mechanism (2) on its outside. The sealing mechanism (2) includes a positioning ring (201) and a protective ring (202). The inner walls of the positioning ring (201) and the protective ring (202) are movably connected to the bushing (1), and the outer surface of the protective ring (202) is slidably connected to the positioning ring (201). The inner wall of the protective ring (202) is fitted with a damping rod (203). The fixed end of the damping rod (203) is fixedly connected to the positioning ring (201). The telescopic end of the positioning ring (201) is fixedly connected to a clamping ring (204). The outer surface of the damping rod (203) is fitted with a spring (205). The two ends of the spring (205) are fixedly connected to the protective ring (202) and the clamping ring (204) respectively. The outer surface of the clamping ring (204) is fixedly connected to a limit block (206). The inner wall of the protective ring (202) is provided with a limit groove (207) that matches the limit block (206).

2. The multi-spring compression type gland device for mechanical seals according to claim 1, characterized in that: The outer surface of the bushing (1) is movably connected to a stationary ring (208), and the outer surface of the stationary ring (208) is fixedly connected to a sealing ring (209).

3. The multi-spring compression type gland device for mechanical seals according to claim 2, characterized in that: One end of the stationary ring (208) is movably connected to a rotating ring (210). A second sealing ring (211) is fixedly connected to the outer surface of the rotating ring (210). A first sealing groove (212) adapted to the first sealing ring (209) is opened on the outer surface of the rotating ring (210). A second sealing groove (213) adapted to the second sealing ring (211) is opened on the outer surface of the protective ring (202).

4. The multi-spring compression type gland device for mechanical seals according to claim 1, characterized in that: The outer surface of the bushing (1) is movably connected to the gland body (214), which covers the stationary ring (208) and the moving ring (210).

5. The multi-spring compression type gland device for mechanical seals according to claim 4, characterized in that: The outer surface of the pressure cap body (214) is fixedly connected with a sealing ring three (215), and the outer surface of the stationary ring (208) is provided with a sealing groove three (216) that matches the sealing ring three (215).

6. The multi-spring compression type gland device for mechanical seals according to claim 1, characterized in that: A cooling mechanism (3) is provided on the outside of the bushing (1). The cooling mechanism (3) includes a cooling ring (301). The inner wall of the cooling ring (301) is movably connected to the bushing (1). A hose (302) is fixedly connected to the outer surface of the cooling ring (301). One end of the hose (302) away from the cooling ring (301) passes through the positioning ring (201) and is fixedly connected to the protective ring (202).

7. The multi-spring compression type gland device for mechanical seals according to claim 6, characterized in that: A refrigeration device (303) is fixedly connected to the outer surface of the refrigeration ring (301), and a connecting pipe (304) is fixedly connected to the output end of the refrigeration device (303). The end of the connecting pipe (304) away from the refrigeration device (303) is fixedly connected to the refrigeration ring (301).

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