Leak-proof kneader shaft seal structure

Abstract

The utility model relates to the field of sealing structure discloses a kind of anti-leakage kneader shaft seal sealing structure, including mounting plate, the static ring component is provided in mounting plate front part, the static ring component includes auxiliary seat, cooling assembly is provided outside the auxiliary seat, the cooling assembly includes liquid outlet pipe, the auxiliary seat is fixedly connected with auxiliary seat lower part, cooling cavity is arranged in the auxiliary seat inside, the auxiliary seat lower part is fixedly connected with liquid inlet pipe, the mounting plate front part is provided with No. The auxiliary seat rear portion is provided with No. 3 mounting groove, and the No. 1 mounting groove and No. 3 mounting groove are jointly clamped with O-shaped sealing ring. In the utility model, cooling assembly is provided, can be targeted to the sealing structure is carried out cooling treatment, effectively inhibits the adverse effect of high temperature generated by the relative friction of sealing element to sealing performance, to significantly prolong the service life of sealing structure, guarantee kneader continuous stable operation, finally improve the overall work efficiency of equipment.

Description

Technical Field

[0001] This utility model relates to the field of sealing structures, and in particular to a leak-proof shaft seal structure for a kneader. Background Technology

[0002] A kneader is a widely used mixing device in the chemical, food, and pharmaceutical industries for stirring, mixing, and reacting high-viscosity materials. The dynamic seal structure between the stirring shaft and the sidewall of the kneading tank is a key component in preventing material leakage.

[0003] Currently, most kneader shaft seals on the market use a single mechanical seal. These shaft seals lack effective cooling and lubrication mechanisms, and the sealing components are prone to accelerated aging due to excessive temperature after prolonged operation, further shortening the service life of the seal structure. This also affects the overall working efficiency of the kneader. The sealing effect of a single mechanical seal is not good enough and it is not practical enough. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a leak-proof kneader shaft seal structure, which aims to solve the problems of the inability to cool and the existence of only a single seal in the prior art.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a leak-proof kneader shaft seal sealing structure, including a mounting plate, a stationary ring assembly at the front of the mounting plate, an auxiliary seat, a cooling assembly outside the auxiliary seat, a liquid outlet pipe, the lower part of the liquid outlet pipe being fixedly connected to the auxiliary seat, a cooling chamber being opened inside the auxiliary seat, and a liquid inlet pipe being fixedly connected to the lower part of the auxiliary seat.

[0006] As a further description of the above technical solution:

[0007] The mounting plate has a first mounting slot at the front and the auxiliary seat has a third mounting slot at the rear. The first and third mounting slots are fitted with an O-ring seal. The mounting plate has a threaded groove inside and the auxiliary seat is threadedly connected to the mounting plate through the threaded groove.

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

[0009] The auxiliary seat has a second mounting slot at its front and a sealing stationary ring at its front. A retaining ring is fixedly connected to the rear of the sealing stationary ring. A rubber ring is movably connected to the outside of the retaining ring. The retaining ring abuts against the second mounting slot. A retaining ring is fixedly connected to the front of the sealing stationary ring. The sealing stationary ring has a fourth mounting slot at its front. A limiting ring abuts against the front of the retaining ring. A sealing ring is fixedly connected to the outside of both the sealing stationary ring and the limiting ring.

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

[0011] The sealing ring is movably connected to a moving ring assembly at its front. The moving ring assembly includes a second upper half ring, a second lower half ring at its lower part, a first upper half ring at its front, and a first lower half ring at its lower part. Connecting grooves are formed on the left and right sides of the second upper half ring, the second lower half ring, the first upper half ring, and the first lower half ring. Two bidirectional threaded rods are threadedly connected between the second lower half ring and the second upper half ring, and between the first upper half ring and the first lower half ring. These four bidirectional threaded rods are threadedly connected to the four connecting grooves. Multiple auxiliary springs are fixedly connected to the front of the second upper half ring and the second lower half ring. Multiple fixing grooves are formed at the rear of the first upper half ring and the first lower half ring. The moving ring assembly is internally fixedly connected to the stirring shaft via bidirectional threaded rods.

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

[0013] The stationary ring assembly is provided with a rotating ring mechanism at the front. The rotating ring mechanism includes a rotating ring seat. The front of the sealing ring is fixedly connected to the rotating ring seat. The rotating ring seat has a No. 5 mounting groove at the rear. The No. 5 mounting groove is movably connected to the rotating ring assembly.

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

[0015] The front of the mounting plate is provided with four fixing screws, and the moving ring seat, sealing ring and auxiliary seat are fixedly connected by the fixing screws.

[0016] This utility model has the following beneficial effects:

[0017] 1. In this utility model, a cooling component is provided, which can specifically cool down the sealing structure, effectively suppress the adverse effects of high temperature generated by relative friction of the sealing components on the sealing performance, thereby significantly extending the service life of the sealing structure, ensuring the continuous and stable operation of the kneader, and ultimately improving the overall working efficiency of the equipment.

[0018] 2. In this utility model, multiple sealing structures are provided, and the stationary ring is designed as a stepped structure. By increasing the sealing contact area and optimizing the pressure distribution on the sealing surface, the overall sealing effect of the sealing structure is further enhanced, and the risk of material leakage is reduced. Attached Figure Description

[0019] Figure 1 This is a three-dimensional schematic diagram of an anti-leakage kneader shaft seal structure proposed in this utility model;

[0020] Figure 2This is a three-dimensional front view of the overall disassembled part of the anti-leakage kneading machine shaft seal sealing structure proposed in this utility model;

[0021] Figure 3 This is a three-dimensional schematic diagram of the overall disassembled part of the anti-leakage kneading machine shaft seal sealing structure proposed in this utility model;

[0022] Figure 4 This is a three-dimensional cross-sectional view of the auxiliary seat, inlet pipe, and outlet pipe of the anti-leakage kneading machine shaft seal sealing structure proposed in this utility model.

[0023] Figure 5 This is a three-dimensional schematic diagram of the dynamic ring of the anti-leakage kneader shaft seal sealing structure proposed in this utility model before disassembly;

[0024] Figure 6 This is a three-dimensional schematic diagram of the rear part of the rotating ring of the anti-leakage kneading machine shaft seal sealing structure proposed in this utility model.

[0025] Legend:

[0026] 1. Mounting plate; 2. Stationary ring assembly; 3. Rotating ring mechanism; 4. Cooling assembly; 5. O-ring seal; 6. Fixing screw; 11. Threaded groove; 12. Stirring shaft; 13. Mounting slot 1; 21. Auxiliary seat; 22. Rubber ring; 23. Sealing stationary ring; 24. Limiting ring; 25. Sealing ring; 211. Mounting slot 2; 212. Mounting slot 3; 231. Snap ring 2; 232. Mounting slot 4; 233. Snap ring 1; 31. Rotating ring assembly; 32. Rotating ring seat; 311. Upper half ring 1; 312. Lower half ring 1; 313. Upper half ring 2; 314. Lower half ring 2; 315. Auxiliary spring; 316. Connecting groove; 317. Bidirectional threaded rod; 318. Fixing groove; 321. Mounting slot 5; 41. Liquid outlet pipe; 42. Cooling chamber; 44. Liquid inlet pipe. Detailed Implementation

[0027] 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.

[0028] Reference Figure 1 The present invention provides an embodiment of a leak-proof kneader shaft seal sealing structure, including a mounting plate 1, which is fixedly connected to the outer shell of the kneader. A stationary ring assembly 2 is provided at the front of the mounting plate 1, and the stationary ring assembly 2 cooperates with the moving ring mechanism 3 to perform sealing.

[0029] Reference Figure 2 - Figure 4 The stationary ring assembly 2 includes an auxiliary seat 21, which assists in the installation of the sealing stationary ring 23. A cooling assembly 4 is provided outside the auxiliary seat 21, enabling internal cooling of the ring. The cooling assembly 4 includes an outlet pipe 41, which allows coolant to circulate. The lower part of the outlet pipe 41 is fixedly connected to the auxiliary seat 21, forming a coolant channel. A cooling chamber 42 is provided inside the auxiliary seat 21, through which coolant can flow. An inlet pipe 44 is fixedly connected to the lower part of the auxiliary seat 21, which delivers coolant into the cooling chamber 42. (The last sentence appears to be incomplete and possibly refers to a different component, "Mounting plate 1 front..."). The auxiliary seat 21 has a first mounting slot 13 for installing an O-ring seal 5, achieving a seal between the auxiliary seat 21 and the mounting plate 1. A third mounting slot 212 is provided at the rear of the auxiliary seat 21, providing space for the O-ring seal 5. Both the first and third mounting slots 13 and 212 engage the O-ring seal 5. A threaded groove 11 is provided inside the mounting plate 1, allowing for a fixed connection between the mounting plate 1 and the auxiliary seat 21. The auxiliary seat 21 and the mounting plate 1 are threaded together via the threaded groove 11. A second mounting slot 2 is provided at the front of the auxiliary seat 21. 11. The second mounting groove 211 engages with the sealing stationary ring 23. The front of the auxiliary seat 21 is provided with the sealing stationary ring 23, which forms a sealing surface with the moving ring assembly 31. A retaining ring 233 is fixedly connected to the rear of the sealing stationary ring 23. A rubber ring 22 is movably connected to the outside of the retaining ring 233. The rubber ring 22 can make the seal between the sealing stationary ring 23 and the auxiliary seat 21 tighter. The retaining ring 233 abuts against the second mounting groove 211 to reduce the gap on the contact surface. A retaining ring 231 is fixedly connected to the front of the sealing stationary ring 23. The retaining ring 231 is set in a stepped shape and is related to the limit. The grooves inside the positioning ring 24 have a consistent shape, making the sealing structure more compact. The front of the sealing stationary ring 23 has a No. 4 mounting groove 232, which is used to install the limiting ring 24. The front of the No. 2 retaining ring 231 abuts against the limiting ring 24. The sealing stationary ring 23 and the limiting ring 24 are jointly and fixedly connected to the outside of the sealing ring 25. The sealing ring 25 is in contact with the moving ring assembly 31. The stationary ring assemblies 2 are all stationary and are rotatably connected to the stirring shaft 12. The front of the sealing ring 25 is movably connected to the moving ring assembly 31, which is fixedly connected to the stirring shaft 12 and rotates at high speed with the stirring shaft 12.

[0030] Reference Figure 5 - Figure 6The moving ring assembly 31 includes a second upper half ring 313, a second lower half ring 314 at the lower part of the second upper half ring 313, a first upper half ring 311 at the front of the second upper half ring 313, and a first lower half ring 312 at the lower part of the first upper half ring 311, facilitating installation and disassembly. Connecting grooves 316 are provided on both the left and right sides of the second upper half ring 313, the second lower half ring 314, the first upper half ring 311, and the first lower half ring 312. The connecting grooves 316 are for installing bidirectional threaded rods 317. The second lower half ring 314 and the second upper half ring 313, as well as the first upper half ring 311 and the first lower half ring 312, are all threadedly connected by bidirectional threaded rods 317. There are two bidirectional threaded rods 317, which fix the first upper half ring 311 and the first lower half ring 312, and the second upper half ring 313 and the second lower half ring 314. The four bidirectional threaded rods 317 are threadedly connected to the four connecting grooves 316. The front of the second upper half ring 313 and the second lower half ring 314 are fixedly connected with multiple auxiliary springs 315. Under the preload force of the multiple auxiliary springs 315 and the pressure of the medium, the sealing end face of the moving ring and the sealing end face of the sealing stationary ring 23 are always tightly fitted. The rear of the first upper half ring 311 and the first lower half ring 312 are provided with multiple fixing grooves 318, which are used to install the auxiliary springs 315.

[0031] Reference Figure 1 - Figure 3 The rotating ring assembly 31 is fixedly connected to the stirring shaft 12 via a bidirectional threaded rod 317. The bidirectional threaded rod 317 makes the gaps between the first upper half ring 311 and the first lower half ring 312, and between the second upper half ring 313 and the second lower half ring 314 gradually smaller. The stationary ring assembly 2 is provided with a rotating ring mechanism 3 at the front. The rotating ring mechanism 3 includes a rotating ring seat 32. The front of the sealing ring 25 is fixedly connected to the rotating ring seat 32. The rear of the rotating ring seat 32 is provided with a fifth mounting groove 321 to assist in the installation of the rotating ring assembly 31 and to protect the rotating ring assembly 31. The fifth mounting groove 321 is movably connected to the rotating ring assembly 31. The front of the mounting plate 1 is provided with four fixing screws 6. The fixing screws 6 can meet the tight connection between multiple structures and reduce the possibility of leakage. The rotating ring seat 32, the sealing ring 25 and the auxiliary seat 21 are fixedly connected by the fixing screws 6.

[0032] Working principle: When using the kneader, the O-ring 5 is inserted into the first mounting groove 13. The auxiliary seat 21 is rotated to fix it together with the mounting plate 1. At this time, the O-ring 5 is inserted between the first mounting groove 13 and the third mounting groove 212. Then, the rubber ring 22 is put on the first retaining ring 233, and the sealing ring 23, along with the rubber ring 22, is inserted into the second mounting groove 211. The limiting ring 24 is put on the front of the sealing ring 23, and together with the sealing ring 25, the limiting ring 24 is inserted into the second mounting groove 211. Simultaneously, the sealing ring 23 is inserted into the sealing ring 25. The second upper half ring 313 and the second lower half ring 314 are removed. Two double-threaded rods 317 are inserted into the corresponding second lower half ring 314. The second upper half ring 313 is then inserted into the other end of the two double-threaded rods 317. Using a hex wrench, the two double-threaded rods 317 are rotated so that the second upper half ring 313 and the second lower half ring 314 are close together and tightly pressed against the stirring shaft 12. The second upper half ring 313 and the second lower half ring 314 are then... The rear part of ring 4 is close to the sealing ring 25. The fixing grooves 318 on the first upper half ring 311 and the first lower half ring 312 are aligned with the auxiliary springs 315 on the second lower half ring 314 and the second upper half ring 313. The second upper half ring 313 and the second lower half ring 314 are then fixed to the stirring shaft 12. The moving ring seat 32 is then fitted so that the rear part of the moving ring seat 32 is tightly against the sealing ring 25. The four fixing screws 6 are inserted into the corresponding threads of the moving ring seat 32, the sealing ring 25 and the auxiliary seat 21. Tighten the four fixing screws 6 in the hole to make all the components more tightly connected. Finally, connect the coolant pipe to the inlet pipe 44 and connect the outlet pipe 41 to the water outlet pipe. Coolant is introduced into the inlet pipe 44. The coolant enters the cooling chamber 42 through the inlet pipe 44, fills the entire cooling chamber 42 and flows out from the outlet pipe 41. The coolant achieves cooling in this process. Turn on the power to make the stirring shaft 12 start to rotate. The stirring shaft 12 is fixedly connected to the moving ring assembly 31 and rotates with the moving ring assembly 31.

[0033] Additionally, it should be noted that components not described in detail in this article are existing technologies.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A leak-proof kneader shaft seal sealing structure, including a mounting plate (1), characterized in that: The mounting plate (1) is provided with a stationary ring assembly (2) at the front. The stationary ring assembly (2) includes an auxiliary seat (21). A cooling assembly (4) is provided outside the auxiliary seat (21). The cooling assembly (4) includes a liquid outlet pipe (41). The lower part of the liquid outlet pipe (41) is fixedly connected to the auxiliary seat (21). A cooling chamber (42) is opened inside the auxiliary seat (21). A liquid inlet pipe (44) is fixedly connected to the lower part of the auxiliary seat (21).

2. The anti-leakage kneader shaft seal sealing structure according to claim 1, characterized in that: The mounting plate (1) has a first mounting groove (13) at the front and the auxiliary seat (21) has a third mounting groove (212) at the rear. The first mounting groove (13) and the third mounting groove (212) are fitted with an O-ring seal (5). The mounting plate (1) has a threaded groove (11) inside and the auxiliary seat (21) is threadedly connected to the mounting plate (1) through the threaded groove (11).

3. The anti-leakage kneader shaft seal sealing structure according to claim 1, characterized in that: The auxiliary seat (21) has a second mounting groove (211) at the front. A sealing stationary ring (23) is provided at the front of the auxiliary seat (21). A retaining ring (233) is fixedly connected to the rear of the sealing stationary ring (23). A rubber ring (22) is movably connected to the outside of the retaining ring (233). The retaining ring (233) abuts against the second mounting groove (211). A retaining ring (231) is fixedly connected to the front of the sealing stationary ring (23). A fourth mounting groove (232) is provided at the front of the sealing stationary ring (23). A limiting ring (24) abuts against the front of the retaining ring (231). A sealing ring (25) is fixedly connected to the outside of the sealing stationary ring (23) and the limiting ring (24).

4. The anti-leakage kneader shaft seal sealing structure according to claim 3, characterized in that: The sealing ring (25) is movably connected to a moving ring assembly (31) at its front. The moving ring assembly (31) includes a second upper half ring (313), a second lower half ring (314) at the lower part of the second upper half ring (313), a first upper half ring (311) at the front of the second upper half ring (313), and a first lower half ring (312) at the lower part of the first upper half ring (311). Connecting grooves (316) are provided on the left and right sides of the second upper half ring (313), the second lower half ring (314), the first upper half ring (311), and the first lower half ring (312). The second lower half ring (314) is connected to the second upper half ring (312). Two bidirectional threaded rods (317) are threadedly connected between the two rings (313) and between the first upper half ring (311) and the first lower half ring (312). The four bidirectional threaded rods (317) are threadedly connected to the four connecting grooves (316). The front of the second upper half ring (313) and the second lower half ring (314) are fixedly connected with multiple auxiliary springs (315). The rear of the first upper half ring (311) and the first lower half ring (312) are provided with multiple fixing grooves (318). The inside of the moving ring assembly (31) is fixedly connected to the stirring shaft (12) through the bidirectional threaded rods (317).

5. The anti-leakage kneader shaft seal sealing structure according to claim 3, characterized in that: The stationary ring assembly (2) is provided with a moving ring mechanism (3) at the front. The moving ring mechanism (3) includes a moving ring seat (32). The front of the sealing ring (25) is fixedly connected to the moving ring seat (32). The rear of the moving ring seat (32) is provided with a fifth mounting slot (321). The fifth mounting slot (321) is movably connected to the moving ring assembly (31).

6. The anti-leakage kneader shaft seal sealing structure according to claim 5, characterized in that: The mounting plate (1) is provided with four fixing screws (6) at the front. The moving ring seat (32), sealing ring (25) and auxiliary seat (21) are fixedly connected by the fixing screws (6).

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