Sealing device of single-motor double-shaft high-speed mixer
By adopting support limit plates and multiple sealing ring designs in single-motor dual-axis high-speed mixers, the problem of poor sealing performance of traditional equipment is solved and higher safety and efficiency are achieved.
Patent Information
- Application Number
- CN202421223993.4
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-31
- Publication Date
- 2025-01-07
- Estimated Expiration
- 2034-05-31
AI Technical Summary
Traditional single-motor dual-axis high-speed mixers have poor sealing performance and easy leakage when mixing liquids, resulting in low production efficiency and safety hazards.
A single motor dual-axis high-speed hybrid sealing device including a dual-axis fixing device, a sealing device and a mixing box is designed. The sealing shaft is realized by three sealing rings and a double-layer bidirectional sealing ring using a support limiting plate limiting drive shaft. Sealed, the lubricating liquid storage tank is in communication with the sealing tank to reduce media leakage.
It effectively avoids the shaking damage of the transmission shaft, improves production safety, and significantly improves the sealing effect through the double-layer sealing design, reduces media leakage, and improves the safety and efficiency of the mixing process.
Smart Images
Figure CN222315921U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of shaft seals, in particular to a sealing device for a single-motor double-shaft high-speed mixer. Background Art
[0002] In the chemical, pharmaceutical, food and other industries, high-speed mixer is an important equipment used to efficiently mix different materials. Traditional single-motor dual-shaft high-speed mixers often have problems such as poor sealing performance and easy leakage when mixing liquids, resulting in low production efficiency and safety hazards. Therefore, a single-motor dual-shaft high-speed mixer sealing device is urgently needed to solve the above problems. Utility Model Content
[0003] The utility model aims to provide a single-motor dual-shaft high-speed mixer sealing device to solve the problems raised in the above background technology.
[0004] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a single-motor dual-shaft high-speed mixer sealing device, comprising a dual-shaft fixing device, a sealing device and a mixing box, the dual-shaft fixing device is arranged on one side of the mixing box, the sealing device is arranged on the dual-shaft fixing device, the dual-shaft fixing device comprises a sealing plate, a support limit plate, a transmission shaft, a lubricating liquid storage tank and a sealing groove, the support limit plate is fixedly installed on one side of the sealing plate, the transmission shaft is symmetrically arranged, and the transmission shaft is rotatably connected to the support limit plate through a rotating shaft, the lubricating liquid storage tank is symmetrically opened on the side of the sealing plate close to the support limit plate, the sealing groove is symmetrically arranged, and the sealing groove is opened on the side of the sealing plate away from the support limit plate, and the lubricating liquid storage tank and the sealing groove are connected.
[0005] Preferably, the sealing device includes a sealing shaft, a pressure relief hole, a first sealing ring, a second sealing ring, a third sealing ring, a first clamping groove, a second clamping groove, a fixed bracket, a reset spring, a ball valve, a connecting groove, a first sealing ring, a second sealing ring and an auxiliary gasket, the pressure relief hole is symmetrically opened at both ends of the sealing shaft, the first sealing ring is clamped and connected to the outside of the sealing shaft, the second sealing ring is clamped and connected to the outside of the sealing shaft, and the third sealing ring is clamped and connected to the outside of the sealing shaft, and the second sealing ring is located between the first sealing ring and the third sealing ring, the first clamping groove is symmetrically opened on the inner side wall of the sealing shaft, the second clamping groove is symmetrically opened on the inner side wall of the sealing shaft, and two second clamping grooves are located between two first clamping grooves, the fixed bracket is fixedly connected to the inner side wall of the pressure relief hole, one end of the reset spring is fixedly connected to the fixed bracket, and the other end of the reset spring is fixedly connected to the ball valve, the first sealing ring is symmetrically clamped and connected to the inside of the two first clamping grooves, and the second sealing ring is symmetrically clamped and connected to the inside of the two second clamping grooves.
[0006] Preferably, the sealing plate is fixedly connected to one side of the mixing box, the transmission shaft is rotatably connected to the inside of the sealing shaft, and the sealing shaft is fixedly installed at one end of the lubricating liquid storage tank away from the support limit plate.
[0007] Preferably, the connecting slot is disposed between top ends of the first card slot and the second card slot, and the connecting slot is communicated with the first card slot and the second card slot respectively.
[0008] Preferably, the auxiliary gasket is evenly fixedly connected to one side of the first sealing ring close to the nearest pressure relief hole, and a notch is provided at the top of the first sealing ring, and the first sealing ring and the second sealing ring are designed the same.
[0009] Compared with the prior art, the beneficial effects of the utility model are as follows:
[0010] The utility model limits the two transmission shafts by supporting the limit plates, thus avoiding damage to the equipment caused by the shaking of the transmission shafts and improving production safety. The outside of the sealing shaft is sealed with three sealing rings, and the inside of the sealing shaft is sealed with a double-layer bidirectional sealing design to improve the sealing effect and reduce medium leakage. BRIEF DESCRIPTION OF THE DRAWINGS
[0011] Figure 1 It is a schematic diagram of the main three-dimensional structure of the utility model;
[0012] Figure 2 It is a schematic diagram of the structure of the main part of the utility model;
[0013] Figure 3It is a schematic diagram of the structure of the double-axis fixing device in the utility model;
[0014] Figure 4 It is a schematic diagram of the sealing device in the utility model;
[0015] Figure 5 This is a schematic diagram of the sealing device structure in the utility model;
[0016] Figure 6 It is a schematic diagram of the sealing device structure in the utility model.
[0017] In the figure: 1-double-axis fixing device, 2-sealing device, 3-mixing box, 4-sealing plate, 5-support limit plate, 6-transmission shaft, 7-lubricating liquid storage tank, 8-sealing groove, 9-sealing shaft, 10-pressure relief hole, 11-first sealing ring, 12-second sealing ring, 13-third sealing ring, 14-first card groove, 15-second card groove, 16-fixed bracket, 17-reset spring, 18-ball valve, 19-connecting groove, 20-first sealing ring, 21-second sealing ring, 22-auxiliary gasket. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0019] See also Figure 1-6 The utility model provides an embodiment: a single-motor dual-shaft high-speed mixer sealing device, comprising a dual-shaft fixing device 1, a sealing device 2 and a mixing box 3, the dual-shaft fixing device 1 is arranged on one side of the mixing box 3, the sealing device 2 is arranged on the dual-shaft fixing device 1, the dual-shaft fixing device 1 comprises a sealing plate 4, a supporting and limiting plate 5, a transmission shaft 6, a lubricating liquid storage tank 7 and a sealing groove 8, the supporting and limiting plate 5 is fixedly installed on one side of the sealing plate 4, the transmission shaft 6 is symmetrically arranged, and the transmission shaft 6 is rotatably connected to the supporting and limiting plate 5 through a rotating shaft, the lubricating liquid storage tank 7 is symmetrically opened on the side of the sealing plate 4 close to the supporting and limiting plate 5, the sealing groove 8 is symmetrically arranged, and the sealing groove 8 is opened on the side of the sealing plate 4 away from the supporting and limiting plate 5, and the lubricating liquid storage tank 7 and the sealing groove 8 are connected.
[0020] The sealing device 2 includes a sealing shaft 9, a pressure relief hole 10, a first sealing ring 11, a second sealing ring 12, a third sealing ring 13, a first groove 14, a second groove 15, a fixing bracket 16, a reset spring 17, a ball valve 18, a connecting groove 19, a first sealing ring 20, a second sealing ring 21 and an auxiliary gasket 22. The pressure relief hole 10 is symmetrically arranged at both ends of the sealing shaft 9, the first sealing ring 11 is fixedly connected to the outside of the sealing shaft 9, the second sealing ring 12 is fixedly connected to the outside of the sealing shaft 9, the third sealing ring 13 is fixedly connected to the outside of the sealing shaft 9, and the second sealing ring 12 is located at the first sealing ring 11. Between the sealing ring 11 and the third sealing ring 13, the first groove 14 is symmetrically opened on the inner wall of the sealing shaft 9, the second groove 15 is symmetrically opened on the inner wall of the sealing shaft 9, and the two second grooves 15 are located between the two first grooves 14, the fixing bracket 16 is fixedly connected to the inner wall of the pressure relief hole 10, one end of the reset spring 17 is fixedly connected to the fixing bracket 16, and the other end of the reset spring 17 is fixedly connected to the ball valve 18, the first sealing ring 20 is symmetrically fixedly connected to the inside of the two first grooves 14, and the second sealing ring 21 is symmetrically fixedly connected to the inside of the two second grooves 15.
[0021] The sealing plate 4 is fixedly connected to one side of the mixing box 3, the transmission shaft 6 is rotatably connected to the inside of the sealing shaft 9, and the sealing shaft 9 is fixedly installed at one end of the lubricating liquid storage tank 7 away from the support limit plate 5. The outside of the sealing shaft 9 is sealed by the first sealing ring 11, the second sealing ring 12 and the third sealing ring 13, and the inside of the sealing shaft 9 is bidirectionally sealed by the symmetrical arrangement of the first sealing ring 20 and the second sealing ring 21.
[0022] The connecting groove 19 is opened between the top ends of the first card groove 14 and the second card groove 15, and the connecting groove 19 is connected with the first card groove 14 and the second card groove 15 respectively. When the medium in the second card groove 15 reaches the bottom end of the connecting groove 19, it flows into the first card groove 14 through the connecting groove 19, and then is discharged through the pressure relief hole 10, so as to avoid damage to the sealing shaft 9 caused by excessive pressure.
[0023] The auxiliary gasket 22 is evenly and fixedly connected to one side of the first sealing ring 20 close to the nearest pressure relief hole 10, and a notch is provided at the top of the first sealing ring 20 to avoid blocking the medium in the second card groove 15 from flowing into the first card groove 14, and the first sealing ring 20 and the second sealing ring 21 are designed the same, and the sealing effect is improved through double-layer sealing.
[0024] Working principle: During use, various liquids are added into the mixing box 3 by external force, and then the motor is started to drive the two transmission shafts 6 to rotate on the support and limit plate 5, and the two transmission shafts 6 are limited by the support and limit plate 5, and the transmission shaft 6 rotates in the sealing shaft 9 at the same time. During the rotation of the transmission shaft 6, the liquid in the mixing box 3 flows outward through the gap between the transmission shaft 6 and the sealing shaft 9, and is blocked by the first sealing ring 20 located at the end of the sealing shaft 9 away from the support and limit plate 5 during the flow of the liquid. The blocked liquid flows to the inside of the first card groove 14 through the gap between the auxiliary gaskets 22. When there is liquid that continues to flow outward through the first sealing ring 20, it is blocked by the second sealing ring 21 close to the first sealing ring 20. The blocked liquid flows to the inside of the second card groove 15 through the gap between the auxiliary gaskets 22. When there is more liquid in the first card groove 14 and the second card groove 15, the liquid squeezes the air inside the first card groove 14 and the second card groove 15, and the squeezed air pushes the ball valve 1 8. When the pressure in the first slot 14 is greater than the pressure of the liquid in the mixing box 3, the ball valve 18 squeezes the return spring 17 to contract, and the air is discharged into the mixing box 3 through the pressure relief hole 10. When the liquid in the first slot 14 accumulates to the bottom of the pressure relief hole 10, the liquid is discharged into the mixing box 3 through the pressure relief hole 10. When the liquid in the second slot 15 accumulates to the bottom of the connecting slot 19, the liquid flows into the first slot 14 through the connecting slot 19, and then is discharged into the mixing box 3 through the pressure relief hole 10. After the liquid in the first slot 14 is discharged, the pressure decreases, and the return spring 17 loses pressure and rebounds to push the ball valve 18 to return to its initial position, thereby preventing the liquid in the mixing box 3 from entering the first slot 14. The lubricating liquid in the lubricating liquid storage tank 7 is also doubly blocked by the first sealing ring 20 and the second sealing ring 21 to prevent the lubricating liquid from entering the mixing box 3 and mixing with the liquid to cause pollution. The outer side of the sealing shaft 9 is blocked by three seals of the first sealing ring 11, the second sealing ring 12 and the third sealing ring 13 to prevent liquid leakage.
[0025] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A sealing device for a single-motor dual-shaft high-speed mixer, comprising a dual-shaft fixing device (1), a sealing device (2) and a mixing box (3), characterized in that: The double-axis fixing device (1) is arranged on one side of the mixing box (3), and the sealing device (2) is arranged on the double-axis fixing device (1). The double-axis fixing device (1) comprises a sealing plate (4), a support and limit plate (5), a transmission shaft (6), a lubricating liquid storage tank (7) and a sealing groove (8). The support and limit plate (5) is fixedly mounted on one side of the sealing plate (4), the transmission shaft (6) is symmetrically arranged, and the transmission shaft (6) is rotatably connected to the support and limit plate (5) via a rotating shaft, the lubricating liquid storage tank (7) is symmetrically opened on a side of the sealing plate (4) close to the support and limit plate (5), the sealing groove (8) is symmetrically arranged, and the sealing groove (8) is opened on a side of the sealing plate (4) away from the support and limit plate (5), and the lubricating liquid storage tank (7) and the sealing groove (8) are connected.
2. A single-motor dual-shaft high-speed mixer sealing device according to claim 1, characterized in that: The sealing device (2) comprises a sealing shaft (9), a pressure relief hole (10), a first sealing ring (11), a second sealing ring (12), a third sealing ring (13), a first clamping groove (14), a second clamping groove (15), a fixing bracket (16), a reset spring (17), a ball valve (18), a connecting groove (19), a first sealing ring (20), a second sealing ring (21) and an auxiliary gasket (22), wherein the pressure relief hole (10) is symmetrically arranged at both ends of the sealing shaft (9), the first sealing ring (11) is fixedly connected to the outer side of the sealing shaft (9), the second sealing ring (12) is fixedly connected to the outer side of the sealing shaft (9), the third sealing ring (13) is fixedly connected to the outer side of the sealing shaft (9), and the second sealing ring (12) is located at the first sealing ring (11). Between the sealing ring (11) and the third sealing ring (13), the first groove (14) is symmetrically opened on the inner side wall of the sealing shaft (9), the second groove (15) is symmetrically opened on the inner side wall of the sealing shaft (9), and the two second grooves (15) are both located between the two first grooves (14), the fixing bracket (16) is fixedly connected to the inner side wall of the pressure relief hole (10), one end of the reset spring (17) is fixedly connected to the fixing bracket (16), and the other end of the reset spring (17) is fixedly connected to the ball valve (18), the first sealing ring (20) is symmetrically fixedly connected inside the two first grooves (14), and the second sealing ring (21) is symmetrically fixedly connected inside the two second grooves (15).
3. A single-motor dual-shaft high-speed mixer sealing device according to claim 2, characterized in that: The sealing plate (4) is fixedly connected to one side of the mixing box (3), the transmission shaft (6) is rotatably connected to the inside of the sealing shaft (9), and the sealing shaft (9) is fixedly mounted on one end of the lubricating liquid storage tank (7) away from the supporting limit plate (5).
4. A single-motor dual-shaft high-speed mixer sealing device according to claim 3, characterized in that: The connecting groove (19) is disposed between the top ends of the first card slot (14) and the second card slot (15), and the connecting groove (19) is communicated with the first card slot (14) and the second card slot (15) respectively.
5. A single-motor dual-shaft high-speed mixer sealing device according to claim 4, characterized in that: The auxiliary gasket (22) is evenly fixedly connected to one side of the first sealing ring (20) close to the nearest pressure relief hole (10), and a notch is provided at the top of the first sealing ring (20), and the first sealing ring (20) and the second sealing ring (21) are designed in the same manner.