Water-cooling air-tight plug valve driven by rotating cylinder
The water-cooled, airtight plug valve driven by a rotary cylinder solves the sealing and cooling problems of existing pressure equalization valves in vertical shaft ironmaking, achieving efficient and stable equipment operation and reducing maintenance costs and energy consumption.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-09
- Publication Date
- 2026-03-24
AI Technical Summary
Existing pressure equalization valves in vertical shaft ironmaking suffer from problems such as thermal deformation, severe wear, poor sealing, high maintenance costs, and high energy consumption under high-temperature conditions. Furthermore, they lack an effective cooling system, which affects production efficiency and equipment stability.
The water-cooled airtight plug valve, driven by a rotary cylinder, utilizes a high-temperature resistant silicone sealing ring and a rotary cylinder drive structure, combined with a water-cooling system, to achieve rapid opening and closing and effective sealing, reducing thermal deformation and wear, and extending equipment life.
It improves the sealing performance and service life of the equipment, reduces the risk of leakage and maintenance costs, ensures stable operation of the equipment in high-temperature environments, and enhances production efficiency and equipment continuity.
Smart Images
Figure CN224033144U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to the technical field of metal smelting, and particularly relates to a water-cooled airtight plug valve driven by a rotary cylinder. BACKGROUND
[0002] As a kind of efficient energy-saving smelting process, the stable operation of the core equipment vertical furnace is crucial to production continuity. As a key component in the vertical furnace system, the pressure equalizing valve bears the important function of isolating the vertical furnace body and upstream and downstream equipment. Specifically, the valve is installed in the airflow channel between the vertical furnace and the upper charging pressure equalizing bin and the lower cooler buffer tank, and by quickly cutting off or conducting airflow, it provides a safe isolation environment for online maintenance of equipment.
[0003] The current mainstream pressure equalizing valve adopts metal hard sealing structure, and relies on the direct contact of precisely machined plug body and valve body to realize sealing. This traditional design has significant defects: first, metal contact sealing relies on high-precision machining, and is prone to thermal deformation in high-temperature environment, leading to increased clearance and leakage; second, the wear of sealing pair increases with the number of opening and closing, and the maintenance cost is high after damage; third, due to large sealing resistance, the driving system needs to be equipped with high-power hydraulic device, which not only increases equipment investment, but also leads to rising energy consumption.
[0004] In addition, the existing pressure equalizing valve generally lacks effective cooling system. In continuous production process, the valve body is in high-temperature environment for a long time, leading to the decline of material mechanical properties and the intensification of oxidation corrosion of sealing surface. This condition not only affects the sealing, but also may cause valve body deformation, leading to failure, and seriously restricts production efficiency.
[0005] Therefore, the utility model is proposed. CONTENT OF UTILITY MODEL
[0006] The utility model aims at overcoming the defects of the prior art, and provides a water-cooled airtight plug valve driven by a rotary cylinder.
[0007] To achieve the above object, the utility model provides the following technical scheme:
[0008] In one aspect, the utility model provides a kind of water-cooled air-tight plug valve of rotary cylinder drive, including box, the box includes upper seal seat, lower seal seat and is set between upper seal seat and lower seal seat, and can be rotated by external force plug shaft, the plug shaft is respectively with upper seal seat and lower seal seat gap cooperation, plug shaft is equipped with the vent hole being connected with upper seal seat, lower seal seat respectively, and two respectively with the sealing ring of vent hole 90 degrees, the sealing ring can be sealed with upper seal seat, lower seal seat connection by plug shaft rotation;The end of the box is respectively fixed with valve cover and bonnet, the one end of plug shaft is rotatably connected with valve cover, and the other end is rotatably connected with bonnet, the end face inner side of the end of the box and bonnet fixed connection is equipped with the water tank of plug valve for cooling conveniently, the box is also provided with water inlet and water outlet being connected with water tank;The box is fixedly connected with valve cover and bonnet by bolt.
[0009] Specifically, two annular grooves for fixing the sealing ring are provided on the plug shaft, and the annular grooves are adapted in shape to the upper seal seat and the lower seal.
[0010] Specifically, the material of the sealing ring is high-temperature-resistant silica gel.
[0011] Specifically, the valve cover is connected with the plug shaft through a first shaft sleeve, and the valve cover is provided with a first stop opening for limiting the first shaft sleeve.
[0012] Further, a first bearing is arranged between the first shaft sleeve and the plug shaft, the first shaft sleeve is provided with a second stop opening for positioning the outer ring of the first bearing, and the plug shaft is interference-fitted with the inner ring of the first bearing.
[0013] Specifically, the side of the box away from the valve cover is also fixed with a support through a fastening bolt, the support is fixed with a support rod for fixing the rotary cylinder, the support rod is perpendicular to the axis of the plug shaft, one end of the rotary cylinder is hingedly connected with the support rod, and the other end is fixedly connected with the plug shaft through an operating rod, and the operating rod is hingedly connected with one end of the rotary cylinder.
[0014] Specifically, the operating rod is provided with a hole adapted to the plug shaft, and the plug shaft is fixedly connected with the operating rod through a key.
[0015] Specifically, one end of the plug shaft is rotatably connected with the bonnet through a second shaft sleeve, the second shaft sleeve is rotatably connected with the plug shaft through a second bearing, the box is provided with a third stop opening for positioning the second shaft sleeve and is fixedly connected with the second shaft sleeve through a bolt, one end of the second shaft sleeve is fixedly connected with the bonnet through a bolt, the other end extends into the box and is provided with a water baffle outside the periphery, the inner circle of the water baffle is interference-fitted with the second shaft sleeve, and the outer circle is interference-fitted with the box, and the water baffle forms a water tank between the box and the second shaft sleeve;
[0016] Need explaining, the box is close to the end of the valve cap is the structure of the neck, convenient and fixed connection with the second shaft sleeve.
[0017] Specific, the water inlet and water outlet are arranged on the end face of one end of the box, the water outlet is arranged at the position close to the upper sealing seat, and the water inlet is arranged at the position close to the lower sealing seat.
[0018] On the other hand, the utility model provides a kind of use method of water-cooled gas-tight cock valve driven by rotary cylinder, as follows:
[0019] When the equipment works, the vent hole is completely corresponding with the position of upper sealing seat and lower sealing seat, at this time, the cock valve is in the vent state;
[0020] When the equipment needs to be overhauled, the equipment stops working, the rotary cylinder is controlled to shorten, so that the operating rod drives the cock shaft to rotate, further drives the sealing ring to rotate, until the sealing ring rotates to the corresponding position of upper sealing seat and lower sealing seat respectively, at this time, the cock valve is in the sealing state, then start overhauling equipment;
[0021] When the equipment is overhauled, the rotary cylinder is controlled to lengthen, so that the operating rod drives the cock shaft to rotate in the opposite direction, further drives the sealing ring to rotate, until the vent hole rotates to the corresponding position of upper sealing seat and lower sealing seat respectively, at this time, the cock valve is in the vent state, then the equipment starts next step work;
[0022] When the equipment is overhauled or works, the water tank is continuously connected with cooling water to cool the cock valve.
[0023] Compared with prior art, the technical scheme provided by the utility model has the following beneficial effects:
[0024] In view of many problems exposed in the application of traditional equalizing valve in shaft furnace ironmaking, the utility model shows significant advantages, as follows:
[0025] 1. In structure and transmission, the cock valve of the utility model has the advantages of simple structure, small size, quick switching, long service life, easy maintenance and the like, the cock shaft is directly driven to rotate by rotary cylinder and operating rod, and the hinge point of connecting rod mechanism is abandoned, so that quick switching is realized, and maintenance efficiency is effectively improved;
[0026] 2. In sealing performance, by arranging sealing ring on the cock shaft, the problems of traditional metal hard sealing thermal deformation and wear are solved, leakage risk is greatly reduced, and high maintenance cost caused by sealing failure is reduced;
[0027] 3. At the level of the cooling system, the utility model discloses a cooling system is equipped for the plug valve, ensures the valve body to maintain lower temperature when continuous operation, delays the recession of material mechanics performance, reduces the degree of oxidation corrosion of sealing surface, avoids the deformation of valve body, not only prolongs the service life of equipment, also reduces the influence of equipment failure to the continuity of production, all -round help vertical furnace iron -making stable, efficient production. BRIEF DESCRIPTION OF DRAWINGS
[0028] The accompanying drawings incorporated in and forming a part of the specification, illustrate the embodiments of the present application and, together with the description, serve to explain the principles of the present application.
[0029] In order to more clearly illustrate the technical scheme in the embodiments of the present application or the prior art, the accompanying drawings needed to be used in the embodiments or prior art description will be briefly introduced below, and obviously, other drawings can also be obtained by those skilled in the art without creative labor under the premise of not paying the creative labor.
[0030] Figure 1 It is the front view of the utility model;
[0031] Figure 2 It is the A-A sectional view of Figure 1 ;
[0032] Figure 3 It is the plan view of Figure 1 .
[0033] Among them: 1 is the box;2 is the rotating cylinder;3 is the operating rod;4 is the key;5 is the first bearing;6 is the plug shaft;7 is the sealing ring;8 is the support;9 is the bolt;10 is the water tank;11 is the support rod;12 is the water inlet;13 is the water outlet. DETAILED DESCRIPTION
[0034] Hereinafter, exemplary embodiments will be described in detail with reference to the accompanying drawings. The embodiments described in the following exemplary embodiments do not represent all the embodiments consistent with the present application. Rather, they are merely examples consistent with some aspects of the present application, as detailed in the appended claims.
[0035] In order for those skilled in the art to better understand the technical scheme of the present application, the present application will be further described in detail below with reference to the accompanying drawings and embodiments.
[0036] EMBODIMENT
[0037] Referring to Figures 1-3As shown, the embodiment provides a water-cooled air-tight plug valve driven by a rotary cylinder, which comprises a box body 1, the box body 1 comprises an upper sealing seat, a lower sealing seat and a plug shaft 6 arranged between the upper sealing seat and the lower sealing seat and capable of being rotated by external force, the plug shaft 6 is respectively in clearance fit with the upper sealing seat and the lower sealing seat, the plug shaft 6 is provided with a vent hole in communication with the upper sealing seat and the lower sealing seat respectively, and two sealing rings 7 at 90 degrees with the vent hole, the sealing ring 7 is capable of being sealingly connected with the upper sealing seat and the lower sealing seat by rotating the plug shaft 6; the box body 1 is respectively fixedly provided with a valve cover and a valve cap at two ends, one end of the plug shaft 6 is rotatably connected with the valve cover, and the other end is rotatably connected with the valve cap, the inner side of the end face of the box body 1 fixedly connected with the valve cap is provided with a water tank 10 for facilitating cooling of the plug valve, the box body 1 is further provided with a water inlet 12 and a water outlet 13 in communication with the water tank 10; the box body 1 is fixedly connected with the valve cover and the valve cap by bolts.
[0038] Specifically, the plug shaft 6 is provided with two annular grooves for fixedly arranging the sealing ring 7, and the annular grooves are respectively matched with the shapes of the upper sealing seat and the lower sealing seat.
[0039] Specifically, the material of the sealing ring 7 is high-temperature-resistant silica gel.
[0040] Specifically, the valve cover is connected with the plug shaft 6 through a first shaft sleeve, and the valve cover is provided with a first stop opening for limiting the first shaft sleeve.
[0041] Further, a first bearing 5 is arranged between the first shaft sleeve and the plug shaft 6, the first shaft sleeve is provided with a second stop opening for positioning the outer ring of the first bearing 5, and the plug shaft 6 is in interference fit with the inner ring of the first bearing 5.
[0042] Specifically, the box body 1 is further provided with a support 8 on the side away from the valve cover through a fastening bolt 9, the support 8 is provided with a support rod 11 for fixing the rotary cylinder 2, the support rod 11 is perpendicular to the axis of the plug shaft 6, one end of the rotary cylinder 2 is hingedly connected with the support rod 11, and the other end is fixedly connected with the plug shaft 6 through an operating rod 3, and the operating rod 3 is hingedly connected with one end of the rotary cylinder 2.
[0043] Specifically, the operating rod 3 is provided with a hole matched with the plug shaft 6, and the plug shaft 6 is fixedly connected with the operating rod 3 through a key 4.
[0044] Specifically, one end of the plug shaft 6 is rotatably connected with the bonnet through a second shaft sleeve, the second shaft sleeve is rotatably connected with the plug shaft 6 through a second bearing, the box body 1 is provided with a third stop opening for positioning the second shaft sleeve and is fixedly connected with the second shaft sleeve through bolts, one end of the second shaft sleeve is fixedly connected with the bonnet through bolts, and the other end extends into the box body 1 and is provided with a water baffle outside the periphery, the inner circle of the water baffle is in interference fit with the second shaft sleeve, and the outer circle is in interference fit with the box body 1, and the water baffle forms a water tank 10 between the box body 1 and the second shaft sleeve.
[0045] It should be noted that the end of the box body 1 close to the bonnet is of a necked structure, facilitating the fixed connection with the second shaft sleeve.
[0046] Specifically, the water inlet 12 and the water outlet 13 are arranged on the end face of one end of the box body 1, the water outlet 13 is arranged at a position close to the upper sealing seat, and the water inlet 12 is arranged at a position close to the lower sealing seat.
[0047] The embodiment provides a use method of the water-cooled air-tight plug valve driven by the rotary cylinder, and the use method is as follows:
[0048] When the equipment works, the vent hole is completely corresponding to the positions of the upper sealing seat and the lower sealing seat, and at this time, the plug valve is in a vent state;
[0049] When the equipment needs to be overhauled, the equipment stops working, the rotary cylinder 2 is controlled to be shortened, so that the operating rod 3 drives the plug shaft 6 to rotate, and further drives the sealing ring 7 to rotate, until the sealing ring 7 rotates to the corresponding positions of the upper sealing seat and the lower sealing seat respectively, at this time, the plug valve is in a sealing state, and then the equipment starts to be overhauled;
[0050] When the equipment is overhauled, the rotary cylinder 2 is controlled to be lengthened, so that the operating rod 3 drives the plug shaft 6 to rotate in the opposite direction, and further drives the sealing ring 7 to rotate, until the vent hole rotates to the corresponding positions of the upper sealing seat and the lower sealing seat respectively, at this time, the plug valve is in a vent state, and then the equipment starts the next step of work;
[0051] When the equipment is overhauled or works, the water tank 10 continuously supplies cooling water to cool the plug valve.
[0052] The above merely describes specific implementation manners of the utility model, so that those skilled in the art can understand or implement the utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the utility model.
[0053] It should be understood that the present application is not limited to the above-described embodiments and can be modified and changed in various ways without departing from the scope thereof. The scope of the present application is limited only by the appended claims.
Claims
1. A water-cooled, airtight plug valve driven by a rotary cylinder, characterized in that, The enclosure includes a housing (1), which includes an upper sealing seat, a lower sealing seat, and a rotary valve shaft (6) disposed between the upper and lower sealing seats and capable of rotating under external force. The rotary valve shaft (6) is clearance-fitted with the upper and lower sealing seats respectively. The rotary valve shaft (6) is provided with vent holes communicating with the upper and lower sealing seats respectively, and two sealing rings (7) at 90 degrees to the vent holes respectively. The sealing rings (7) can be sealed to the upper and lower sealing seats by rotating the rotary valve shaft (6). A valve cover and a valve cap are fixed at both ends of the housing (1) respectively. The rotary valve shaft (6) One end of the valve is rotatably connected to the valve cover, and the other end is rotatably connected to the valve cap. The inner side of the end face of the box (1) that is fixedly connected to the valve cap is provided with a water tank (10) to facilitate cooling of the plug valve. The box (1) is also provided with an inlet (12) and an outlet (13) that are connected to the water tank (10). The plug shaft (6) is provided with two annular grooves for fixing the sealing ring (7). The annular grooves are respectively adapted to the shape of the upper sealing seat and the lower sealing seat. The operating rod (3) is provided with a hole that is adapted to the plug shaft (6). The plug shaft (6) is fixedly connected to the operating rod (3) by a key (4).
2. The water-cooled airtight plug valve according to claim 1, characterized in that, The sealing ring (7) is made of high-temperature resistant silicone.
3. The water-cooled airtight plug valve according to claim 1, characterized in that, The valve cover is connected to the plug shaft (6) via a first bushing, and the valve cover is provided with a first stop that limits the first bushing.
4. The water-cooled airtight plug valve according to claim 3, characterized in that, A first bearing (5) is provided between the first bushing and the plug shaft (6). The first bushing is provided with a second stop for positioning the outer ring of the first bearing (5). The plug shaft (6) and the inner ring of the first bearing (5) are interference-fitted.
5. The water-cooled airtight plug valve according to claim 1, characterized in that, A bracket (8) is fixed on the side of the housing (1) away from the valve cover. The bracket (8) is fixed with a support rod (11) for fixing the rotary cylinder (2). The support rod (11) is perpendicular to the axis of the rotary valve shaft (6). One end of the rotary cylinder (2) is hinged to the support rod (11), and the other end is fixedly connected to the rotary valve shaft (6) through an operating rod (3). The operating rod (3) is hinged to one end of the rotary cylinder (2).
6. The water-cooled airtight plug valve according to claim 1, characterized in that, One end of the plug shaft (6) is rotatably connected to the valve cap through the second bushing. The second bushing is rotatably connected to the plug shaft (6) through the second bearing. The housing (1) is provided with a third stop for positioning the second bushing and is fixedly connected to the second bushing.
7. The water-cooled airtight plug valve according to claim 6, characterized in that, One end of the second bushing is fixedly connected to the valve cap, and the other end extends into the housing (1) and is fitted with a baffle plate on its outer circumference. The inner circle of the baffle plate is interference-fitted with the second bushing, and the outer circle is interference-fitted with the housing (1). The baffle plate forms a water trough (10) between the housing (1) and the second bushing.
8. The water-cooled airtight plug valve according to claim 1, characterized in that, The inlet (12) and outlet (13) are located on the end face of one end of the housing (1). The outlet (13) is located near the upper sealing seat, and the inlet (12) is located near the lower sealing seat.