A new rotary valve sealing structure

Abstract

The utility model discloses a novel rotary valve sealing structure relates to rotary valve sealing technical field, this novel rotary valve sealing structure includes the casing, the inside rotation of casing is installed with rotor, both ends of casing are all through screw fixed mounting and have the end cover, the rotor with two end covers all are provided with sealing mechanism. The utility model discloses through the precision end face of dynamic ring and static ring and the thin liquid film sealing effect of pasting spare, and the leakage is extremely low, can reach the zero leakage requirement of industrial standard, effectively avoid the waste and pollution caused by liquor, condiment, biological brewing etc. the waste and pollution caused by material leakage in the cooking system, the lubrication effect of sealing surface collocation liquid membrane, greatly reduce the friction loss, not only significantly reduce the equipment operation energy consumption and heat generation, can also reduce the rotor wear and tear, prolong the service life of rotor.

Description

Technical Field

[0001] This utility model relates to the field of rotary valve sealing technology, specifically a novel rotary valve sealing structure. Background Technology

[0002] In the cooking systems of liquor and condiment brewing, the core function of the rotary valve sealing structure is to ensure that the raw materials are continuously and reliably isolated from the high-temperature, high-pressure saturated steam environment inside the tank during feeding and discharging. Once the seal leaks, valuable steam heat energy will be continuously lost, resulting in huge energy waste. More seriously, the internal pressure will fluctuate or even be lost, leading to incomplete gelatinization and sterilization of the raw materials, directly affecting product quality and yield. At the same time, bacteria from the external environment will invade through the leak point, contaminating the clean raw materials and ultimately destroying the purity and safety of the entire batch of fermentation, causing serious economic losses. Therefore, the rotary valve sealing structure is extremely important.

[0003] Existing rotary valves use packing seals. During the rotation process, there is constant friction and wear between the rotor and the seal. The packing also needs to be tightened and replaced periodically. High temperatures can also cause the packing to soften, age, or even fail. High pressure will exacerbate the tendency of material leakage, placing extremely high demands on the strength and rigidity of the sealing structure.

[0004] Based on this, a novel rotary valve sealing structure is now provided, which can eliminate the drawbacks of existing devices. Utility Model Content

[0005] The purpose of this invention is to provide a novel rotary valve sealing structure to solve the problem in the prior art where the rotor and the seal are constantly in contact and wear during rotation, requiring periodic tightening and replacement of the packing.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] A novel rotary valve sealing structure includes a housing, in which a rotor is rotatably mounted, and end caps are fixedly mounted at both ends of the housing by screws.

[0008] A sealing mechanism is provided between the rotor and the two end caps.

[0009] Based on the above technical solutions, this utility model also provides the following optional technical solutions:

[0010] In one alternative embodiment: the sealing mechanism includes a limiting plate, which is fixedly installed on the outside of the rotor. A moving ring seat is provided on the outside of the rotor and on the side of the limiting plate near the end cover. A moving ring body is provided inside the moving ring seat. Multiple compensation and adjustment mechanisms are arranged circumferentially at equal intervals between the moving ring body and the moving ring seat.

[0011] In one alternative: the compensation adjustment mechanism includes a first positioning sleeve and a second positioning sleeve, the first positioning sleeve is fixedly installed inside the moving ring seat, the second positioning sleeve is fixedly installed on the end face of the moving ring body located inside the moving ring seat, and a spring is provided between the first positioning sleeve and the second positioning sleeve.

[0012] In one alternative: a first sealing ring is provided between the rotor and the rotating ring seat, and a rotating ring sealing ring is provided between the rotating ring body and the rotating ring seat.

[0013] In one alternative: a stationary ring body is provided inside the end cap, and a stationary ring sealing ring is provided between the stationary ring body and the end cap.

[0014] In one alternative embodiment: a dynamic ring bonding component and a static ring bonding component are respectively provided on opposite sides of the dynamic ring body and the static ring body, and the dynamic ring bonding component and the static ring bonding component are bonded to each other.

[0015] In one alternative: the outer circular surface of the rotor is provided with a flat key along the axial direction, and the inner wall of the moving ring seat is provided with a keyway adapted to the flat key, and the flat key is embedded in the keyway to form a circumferential fixation.

[0016] In one alternative: the inner wall of the annular guide hole of the moving ring seat is provided with an axial protrusion, and the outer circular surface of the moving ring body is provided with a groove that matches the protrusion. The protrusion is embedded in the groove to form a circumferential limit.

[0017] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0018] 1. This utility model achieves extremely low leakage through the precise end-face bonding of the dynamic ring bonding component and the static ring bonding component, as well as the sealing effect of an extremely thin liquid film. It can meet the zero leakage requirement of industrial standards, effectively avoiding waste and pollution caused by material leakage in the cooking systems of liquor, condiments, and bio-brewing.

[0019] 2. The sealing surface of this utility model, combined with the lubrication effect of the liquid film, greatly reduces friction loss, which not only significantly reduces the energy consumption and heat generation of the equipment, but also reduces wear on the rotor and extends the service life of the rotor.

[0020] 3. This utility model uses a spring to achieve dynamic wear compensation, and the combination of high wear-resistant materials for the stationary ring (silicon carbide material) and the dynamic ring (metal ceramic material) enables the sealing structure to operate stably for one year or even longer under normal working conditions, greatly extending the maintenance cycle, reducing the number of equipment downtime maintenance, reducing maintenance costs, and improving production continuity, adapting to the complex working conditions of high temperature and high pressure in the brewing industry's cooking system. Attached Figure Description

[0021] Figure 1This is a schematic diagram of the overall structure of this utility model.

[0022] Figure 2 This is a schematic diagram of the mounting structure of the moving ring seat of this utility model.

[0023] Figure 3 This is a schematic diagram of the mounting structure of the moving ring body of this utility model.

[0024] Figure 4 This is a schematic diagram of the compensation and adjustment mechanism of this utility model.

[0025] Figure 5 This is a schematic diagram of the static ring main body installation structure of this utility model.

[0026] Figure reference numerals: 1. Housing; 2. Rotor; 3. End cover; 4. Sealing mechanism; 41. Limiting plate; 42. Moving ring seat; 43. First sealing ring; 44. Moving ring body; 45. Compensation and adjustment mechanism; 451. First positioning sleeve; 452. Spring; 453. Second positioning sleeve; 46. Moving ring sealing ring; 47. Moving ring mating part; 48. Stationary ring body; 49. Stationary ring sealing ring; 410. Stationary ring mating part. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments.

[0028] In one embodiment, such as Figures 1-5 As shown, a novel rotary valve sealing structure includes a housing 1, a rotor 2 rotatably mounted inside the housing 1, and end caps 3 fixedly mounted at both ends of the housing 1 by screws.

[0029] A sealing mechanism 4 is provided between the rotor 2 and the two end caps 3.

[0030] In this embodiment, through the precise end-face bonding of the dynamic ring fitting component 47 and the static ring fitting component 410, and the sealing effect of the extremely thin liquid film, the leakage is extremely low, meeting the zero leakage requirement of industrial standards. This effectively avoids waste and pollution caused by material leakage in the cooking systems of liquor, condiments, and bio-brewing. The sealing surface combined with the lubrication effect of the liquid film significantly reduces frictional loss, which not only significantly reduces the energy consumption and heat generation of the equipment, but also reduces wear on the rotor 2 and extends the service life of the rotor 2. The use of spring 452 to achieve dynamic wear compensation, and the combination of the high wear-resistant materials of the static ring (silicon carbide material) and the dynamic ring (metal ceramic material), allows the sealing structure to operate stably for 1-2 years or even longer under normal working conditions. This significantly extends the maintenance cycle, reduces the number of equipment downtime maintenance, lowers maintenance costs, and improves production continuity, adapting to the complex working conditions of high temperature and high pressure in the cooking systems of the brewing industry.

[0031] In one embodiment, such as Figures 2-5 As shown, the sealing mechanism 4 includes a limiting plate 41, which is fixedly installed on the outside of the rotor 2. A rotating ring seat 42 is provided on the outside of the rotor 2, on the side of the limiting plate 41 near the end cover 3. A rotating ring body 44 is provided inside the rotating ring seat 42. Multiple compensation and adjustment mechanisms 45 are equidistantly arranged in a ring between the rotating ring body 44 and the rotating ring seat 42. Each compensation and adjustment mechanism 45 includes a first positioning sleeve 451 and a second positioning sleeve 453. The first positioning sleeve 451 is fixedly installed inside the rotating ring seat 42, and the second positioning sleeve 453 is fixedly installed on the end face of the rotating ring body 44 located inside the rotating ring seat 42. A spring 452 is provided between the first positioning sleeve 451 and the second positioning sleeve 453. A first sealing ring 43 is provided between the rotor 2 and the rotating ring seat 42, and a rotating ring sealing ring 46 is provided between the rotating ring body 44 and the rotating ring seat 42. The end cover 3 is located inside... A stationary ring body 48 is provided, and a stationary ring sealing ring 49 is provided between the stationary ring body 48 and the end cover 3. A rotating ring body 44 and a stationary ring body 48 are respectively provided on opposite sides of the stationary ring body 48, and the rotating ring body 47 and the stationary ring body 410 are mutually fitted. A first positioning sleeve 451 and a second positioning sleeve 453 are respectively fixed to the rotating ring seat 42 and the rotating ring body 44, which not only provides precise installation positioning and guidance for the spring 452, avoiding the spring 452 from offset or twisting, but also ensures that the spring force of the spring 452 is uniformly transmitted along the axial direction. The spring 452 provides a continuous and stable axial clamping force, which, together with the system fluid pressure, makes the rotating ring body 47 and the stationary ring body 410 fit tightly together to form an effective sealing surface. When the sealing surface is slightly worn, the spring 452 automatically extends, pushing the rotating ring body 44 to move axially, compensating for the wear gap in real time, and ensuring that the sealing surface is always tightly fitted.

[0032] In one embodiment, such as Figure 3 and Figure 4 As shown, the outer circular surface of the rotor 2 is provided with a flat key along the axial direction. The inner wall of the rotating ring seat 42 is provided with a keyway that matches the flat key. The flat key is embedded in the keyway to form a circumferential fixation. The inner wall of the annular guide hole of the rotating ring seat 42 is provided with an axial protrusion. The outer circular surface of the rotating ring body 44 is provided with a groove that matches the protrusion. The protrusion is embedded in the groove to form a circumferential limit. The flat key on the outer circle of the rotor 2 and the keyway in the inner hole of the rotating ring seat 42 cooperate to form a reliable circumferential fixation structure. The axial protrusion on the inner wall of the annular guide hole of the rotating ring seat 42 is adapted to the groove on the outer circle of the rotating ring body 44 to form a reliable circumferential fixation structure.

[0033] The above embodiment discloses a novel rotary valve sealing structure. When the rotary valve is running, the rotor 2 drives the rotating ring seat 42, which is circumferentially fixed to it via a flat key and a keyway, to rotate synchronously. The rotating ring seat 42, through the axial protrusion of the inner wall of its annular guide hole, engages with the circumferentially limiting fit of the groove on the outer surface of the rotating ring body 44, further driving the rotating ring body 44 and the rotating ring fitting 47 connected to the rotating ring body 44 to rotate synchronously. At the same time, the stationary ring body 48 and the stationary ring fitting 410 are fixed to the end cover 3 by the stationary ring seat and remain stationary with the end cover 3.

[0034] In the compensation and adjustment mechanism 45, the first positioning sleeve 451 is fixedly installed inside the moving ring seat 42, and the second positioning sleeve 453 is fixedly installed on the moving ring body 44. The spring 452 between the two can provide a continuous and stable axial clamping force. This clamping force works in conjunction with the fluid pressure in the cooking system to push the moving ring fitting part 47 to move towards the stationary ring fitting part 410, so that the moving ring fitting part 47 and the precision end face of the stationary ring fitting part 410 are tightly fitted to form the main sealing surface and naturally generate an extremely thin liquid film.

[0035] Meanwhile, the first sealing ring 43 between the rotor 2 and the rotating ring seat 42, the rotating ring sealing ring 46 between the rotating ring body 44 and the rotating ring seat 42, and the stationary ring sealing ring 49 between the stationary ring body 48 and the end cover 3 respectively seal the fitting gaps between the components, blocking the material leakage channel; when long-term operation causes slight wear on the sealing end faces of the rotating ring mating part 47 and the stationary ring mating part 410, the spring 452 will automatically extend, and through the guiding action of the first positioning sleeve 451 and the second positioning sleeve 453, continuously supplement the axial clamping force, pushing the rotating ring body 44 and the rotating ring mating part 47 to move towards the stationary ring, compensating for the wear gap in real time, and ensuring that the main sealing surface always maintains a tight fit.

[0036] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A novel rotary valve sealing structure, comprising a housing (1), wherein a rotor (2) is rotatably mounted inside the housing (1), and end caps (3) are fixedly mounted at both ends of the housing (1) by screws; Its features are, A sealing mechanism (4) is provided between the rotor (2) and the two end caps (3).

2. The novel rotary valve sealing structure according to claim 1, characterized in that, The sealing mechanism (4) includes a limiting plate (41), which is fixedly installed on the outside of the rotor (2). A moving ring seat (42) is provided on the outside of the rotor (2) and on the side of the limiting plate (41) near the end cover (3). A moving ring body (44) is provided inside the moving ring seat (42). Multiple compensation and adjustment mechanisms (45) are arranged in a ring at equal intervals between the moving ring body (44) and the moving ring seat (42).

3. The novel rotary valve sealing structure according to claim 2, characterized in that, The compensation adjustment mechanism (45) includes a first positioning sleeve (451) and a second positioning sleeve (453). The first positioning sleeve (451) is fixedly installed inside the moving ring seat (42), and the second positioning sleeve (453) is fixedly installed on the end face of the moving ring body (44) located inside the moving ring seat (42). A spring (452) is provided between the first positioning sleeve (451) and the second positioning sleeve (453).

4. The novel rotary valve sealing structure according to claim 3, characterized in that, A first sealing ring (43) is provided between the rotor (2) and the moving ring seat (42), and a moving ring sealing ring (46) is provided between the moving ring body (44) and the moving ring seat (42).

5. A novel rotary valve sealing structure according to claim 4, characterized in that, The end cap (3) is provided with a stationary ring body (48) inside, and a stationary ring sealing ring (49) is provided between the stationary ring body (48) and the end cap (3).

6. The novel rotary valve sealing structure according to claim 5, characterized in that, The moving ring body (44) and the stationary ring body (48) are respectively provided with a moving ring fitting (47) and a stationary ring fitting (410) on opposite sides, and the moving ring fitting (47) and the stationary ring fitting (410) are fitted together.

7. A novel rotary valve sealing structure according to claim 2, characterized in that, The outer circular surface of the rotor (2) is provided with a flat key along the axial direction, and the inner wall of the moving ring seat (42) is provided with a keyway that matches the flat key. The flat key is embedded in the keyway to form a circumferential fixation.

8. A novel rotary valve sealing structure according to claim 2, characterized in that, The inner wall of the annular guide hole of the moving ring seat (42) is provided with an axial protrusion, and the outer circular surface of the moving ring body (44) is provided with a groove that matches the protrusion. The protrusion is embedded in the groove to form a circumferential limit.

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