Valve applied to anti-corrosion pipeline

Abstract

The valve applied to the anti-corrosion pipeline is applied to the technical field of valves and comprises a valve body, the inner surface of the valve body is coated with a Teflon layer, blades are arranged in the valve body, two valve rods are arranged in the valve body, the two valve rods are symmetrically distributed relative to the blades and connected with the blades, and the two valve rods are rotationally connected with the valve body. The outer sides of the blades and the two sections of valve rods are sleeved with fluororubber sleeve layers; a handle mounting seat is arranged on the outer wall of the valve body, a fan blade and a valve control handle are arranged on the handle mounting seat, an external connecting rod is connected to the valve rod, a connecting part is arranged between the fan blade and the external connecting rod, a plurality of positioning round holes are continuously formed in the fan blade and are sequentially communicated, and the central angle corresponding to an arc formed by the circle centers of the positioning round holes is 90 degrees. And a fixing part is arranged between the fan blade and the handle mounting seat and penetrates through the positioning round hole. According to the valve, the multiple gears are arranged and fixed, a worker can control the rotation amplitude of the blades in the valve body outside the ventilation pipeline, and then opening and closing of the valve and the ventilation quantity are accurately controlled.

Description

Technical Field

[0001] The present application relates to the field of valve technology, and in particular to a valve used on an anti-corrosion pipeline. Background Art

[0002] Various acidic and alkaline gases will be produced during the production process of chips. If these waste gas pollutants are directly discharged without purification, they will cause serious pollution to the environment and endanger the health of surrounding residents. Therefore, the chip waste gas needs to be purified and meet the standards before being discharged.

[0003] Since chip exhaust gas is highly corrosive, the ventilation ducts that handle this type of exhaust gas are usually required to be anti-corrosion ducts, and the anti-corrosion requirements for the ventilation ducts are extremely high. The material commonly used for this type of anti-corrosion ducts on the market is stainless steel lined with Teflon. This type of anti-corrosion duct is also called Teflon anti-corrosion duct. Of course, the anti-corrosion requirements for the valves used on the pipelines are also consistent with the anti-corrosion requirements of the pipelines, and the valve material is also stainless steel lined with Teflon.

[0004] For example, a Chinese patent for a fully internally welded valve, the patent publication number is CN212775620U, which includes a valve body, blades, a valve stem and a transmission assembly. The blades are welded and fixed to the valve stem. The outer surfaces of the blades and the valve stem are coated with an anti-corrosion coating. The inner surface of the valve body is also treated with an anti-corrosion coating. The transmission assembly includes a handwheel, a worm gear and a worm. The worm gear is fixed to the valve stem, the worm and the worm gear are matched, and the handwheel and the worm are fixedly connected. By turning the handwheel, the worm can be rotated, thereby realizing the rotation of the worm gear and the blades, so as to achieve the purpose of opening and closing the valve and controlling the ventilation volume of the valve. However, during the application process, it is difficult for the staff to accurately control the rotation amplitude of the blades inside the valve body outside the ventilation duct only through the structure of the existing transmission assembly, so it is impossible to accurately control the ventilation volume of the valve, and there are limitations in its use. Utility Model Content

[0005] In order to improve the defect that it is difficult to accurately control the rotation amplitude of the blades inside the valve body during the application of the valve, and thus it is impossible to accurately control the ventilation volume of the valve, the present application provides a valve for use on anti-corrosion pipelines.

[0006] The present application provides a valve for use on an anti-corrosion pipeline, which adopts the following technical solution:

[0007] A valve used in an anti-corrosion pipeline, comprising a valve body, the inner surface of the valve body being coated with a Teflon layer, a blade being arranged inside the valve body, a gap being formed between the outer ring of the blade and the inner surface of the valve body, two sections of valve stem being arranged inside the valve body, the two sections of the valve stem being symmetrically distributed with the blade and fixedly connected to the blade, and the two sections of the valve stem being rotatably connected to the valve body, a fluororubber sleeve layer being sleeved on the outer sides of the blade and the two sections of the valve stem, and the outer ring of the fluororubber sleeve layer being pressed tightly against the inner surface of the valve body;

[0008] A handle mounting seat is provided on the outer wall of the valve body at one of the valve stems, a fan blade and a valve control handle fixedly connected to the fan blade are provided on the handle mounting seat, an external connecting rod is fixedly connected to the valve stem, the external connecting rod passes through the handle mounting seat, a connecting component is provided between the fan blade and the external connecting rod, a plurality of positioning circular holes are continuously opened on the fan blade and the positioning circular holes are connected in sequence, a central angle of an arc formed by the centers of the plurality of positioning circular holes is 90°, a fixing component is provided between the fan blade and the handle mounting seat, and the fixing component passes through the positioning circular hole, when the fixing components are respectively at the positioning circular holes at the two ends of the fan blade, the blade is fully closed and 90° open inside the valve body respectively.

[0009] By adopting the above technical solution, the Teflon layer and the fluororubber sleeve layer can ensure the safe and long-term application of the valve of the present application in the ventilation duct for processing chip exhaust gas. The valve control handle can control the rotation of the fan blade, and under the action of the fan blade, the valve stem and the blade can be driven to rotate, thereby achieving the purpose of opening and closing the valve and controlling the ventilation volume of the valve. However, in this process, since multiple positioning circular holes are set on the fan blade and the center angle of the arc formed by the center of the multiple positioning circular holes is 90°, that is, multiple gears are set on the fan blade, and the multiple gears are fixed with the help of fixing components, so the staff can accurately control the rotation amplitude of the blade inside the valve body outside the ventilation duct, and then accurately control the opening and closing of the valve and the ventilation volume of the valve.

[0010] Optionally, the number of the positioning holes is set to seven, that is, the central angle of the arc formed by the centers of each two adjacent positioning holes is 15°, and when the fixing components are respectively on the first positioning hole, the second positioning hole, the third positioning hole, the fourth positioning hole, the fifth positioning hole, the sixth positioning hole and the seventh positioning hole on the fan leaf, the blades inside the valve body are respectively in the 0° fully closed state, the 15° open state, the 30° open state, the 45° open state, the 60° open state, the 75° open state and the 90° open state.

[0011] By adopting the above technical solution, seven gears are set on the fan blade, so that the opening of the blade is 0°, 15°, 30°, 45°, 60°, 75° and 90° respectively, making it convenient for the staff to accurately control the opening and closing of the valve and the ventilation volume of the valve outside the ventilation duct.

[0012] Optionally, the fixing component includes a butterfly screw and a nut, a through hole corresponding to the positioning circular hole is opened on the handle mounting seat, the nut is fixedly connected to the bottom surface of the handle mounting seat and the nut corresponds to the through hole, and the butterfly screw is threadedly connected to the nut after passing through the positioning circular hole and the through hole.

[0013] By adopting the above technical solution, when the valve control handle controls the rotation of the fan blade to adjust the gear position, it only needs to loosen the butterfly screw, and there is no need to completely remove the butterfly screw, so the operation is more convenient. In the process of adjusting the gear position, the butterfly screw can pass through seven positioning holes. When the gear position is adjusted, that is, the blade opening is adjusted, the fan blade and the blade can be fixed by tightening the butterfly screw.

[0014] Optionally, a bearing cover is provided on the outer wall of the valve body, the bearing cover is located in the handle mounting seat, the external rod passes through the bearing cover, a bearing is provided inside the bearing cover, and the external rod and the inner ring of the bearing are interference fit.

[0015] By adopting the above technical solution, a bearing cover and a bearing inside the bearing cover are provided, so that the external rod can be stabilized to make the rotation of the external rod more reliable, thereby making the rotation of the valve stem and the blade more stable.

[0016] Optionally, the connecting component includes a circular end fixedly connected to the external connecting rod, a circular hole is provided on the fan sheet, the circular end is adapted to be installed in the circular hole, and the circular end and the fan sheet are welded.

[0017] By adopting the above technical solution, the circular end head is adapted to be installed in the circular hole and the circular end head and the fan blade are welded. The circular end head serves as the rotation fulcrum of the fan blade. When the fan blade rotates, it can drive the circular end head and the external rod to rotate, thereby driving the valve stem and the blade to rotate.

[0018] Optionally, the connecting component includes a polygonal end fixedly connected to the external connecting rod, a polygonal hole is provided on the fan blade, and the polygonal end is adapted to be installed in the polygonal hole.

[0019] By adopting the above technical solution, the connecting component composed of the polygonal end and the polygonal hole can be locked from a structural point of view. Without the need for welding, the fan blade can drive the circular end to rotate when it rotates.

[0020] Optionally, the polygonal end and the fan blade are welded.

[0021] By adopting the above technical scheme, in order to make the use of the valve more stable and reliable, the polygonal end head and the fan blade can also be welded. On the whole, the connecting component composed of the polygonal end head and the polygonal hole is more stable and more reliably fixed than the connecting component composed of the circular end head and the circular hole. Even if the welding part between the polygonal end head and the polygonal hole on the fan blade is detached, the structural advantage can be relied on to achieve locking, so the blade will not deflect and can still maintain a relatively stable state.

[0022] Optionally, a silicone sleeve is sleeved on the valve control handle.

[0023] By adopting the above technical solution, the provision of the silicone sleeve can increase the comfort of the worker's hand when controlling the valve control handle.

[0024] In summary, this application includes the following beneficial technical effects:

[0025] 1. The valve control handle can control the rotation of the fan blade, and the valve stem and the blade can be driven to rotate under the action of the fan blade, thereby achieving the purpose of opening and closing the valve and controlling the ventilation volume of the valve. However, in this process, seven positioning holes are set on the fan blade, and the central angle of the arc formed by the center of the seven positioning holes is 90°, that is, seven gears are set on the fan blade, and these seven gears are fixed with the help of fixing parts. Therefore, the staff can accurately control the rotation amplitude of the blade inside the valve body outside the ventilation duct, and then accurately control the opening and closing of the valve and the ventilation volume of the valve.

[0026] 2. The Teflon layer and the fluororubber sleeve layer can ensure the safe and long-term application of the valve of the present application in the ventilation duct for processing chip exhaust gas. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the three-dimensional structure of the valve used in the anti-corrosion pipeline in the first embodiment.

[0028] Figure 2 It is a cross-sectional view of the blade and the fluororubber sleeve layer on the blade in Example 1.

[0029] Figure 3 It is a schematic diagram of the structure of the handle mounting base and other components on the handle mounting base in the first embodiment.

[0030] Figure 4 It is a schematic diagram of the structure of the handle mounting base and other components on the handle mounting base in the second embodiment.

[0031] Reference signs: 1, valve body; 2, blade; 3, valve stem; 4, handle mounting seat; 5, fan blade; 51, positioning round hole; 52, round hole; 53, polygonal hole; 6, valve control handle; 7, external rod; 8, connecting component; 81, round end; 82, polygonal end; 9, fixing component; 91, wing nut; 92, nut; 10, fluororubber sheath layer; 11, bearing cover. Detailed implementation manners

[0032] The following further elaborates on this application Figure 1-4 in conjunction with the accompanying drawings.

[0033] Embodiment 1

[0034] This embodiment discloses a valve applied to an anti-corrosion pipeline. Referring to Figure 1 and Figure 2 , the valve applied to the anti-corrosion pipeline includes a valve body 1, a blade 2 and a valve stem 3. The valve body 1, the blade 2 and the valve stem 3 are all made of stainless steel. In order to be applied to the ventilation pipeline for treating chip exhaust gas and make the valve safer and more durable, a Teflon can be coated on the inner surface of the valve body 1 to form a Teflon layer; the blade 2 and the valve stem 3 are arranged inside the valve body 1. The blade 2 is adapted to the inner cavity of the valve body 1, but there is a certain gap between the outer ring of the blade 2 and the inner surface of the valve body 1. The valve stem 3 has two sections. The blade 2 is between the two sections of the valve stem 3 and the blade 2 is welded and fixed to the two sections of the valve stem 3. Both sections of the valve stem 3 are rotatably connected to the inner wall of the valve body 1. Therefore, the blade 2 can rotate inside the valve body 1 to achieve the purpose of opening and closing the valve and controlling the ventilation volume of the valve. Also, in order to be applied to the ventilation pipeline for treating chip exhaust gas and make the valve safer and more durable, a fluororubber sleeve can be sleeved outside the blade 2 and the two sections of the valve stem 3 to form a fluororubber sleeve layer 10, and the outer ring of the fluororubber sleeve layer 10 abuts against the inner surface of the valve body 1. In this way, the sealing effect is better when the blade 2 opens and closes inside the valve body 1, especially when the valve channel is completely closed.

[0035] Referring to Figure 1 , a handle mounting seat 4 is arranged on the outer wall of the valve body 1 at any valve stem 3. The handle mounting seat 4 is in a U shape and the two ends of the handle mounting seat 4 are welded to the outer wall of the valve body 1. In this way, the handle mounting seat 4 actually presents a raised state on the outer wall of the valve body 1. And in combination with Figure 3An external rod 7 is coaxially welded on the valve stem 3 near the handle mounting seat 4. The radial cross-section of the external rod 7 is circular. The external rod 7 passes through the handle mounting seat 4, and the valve stem 3 and the blade 2 can be driven to rotate by rotating the external rod 7. Since there will be great resistance when the ventilation duct rotates the blade 2 inside the valve body 1 during actual operation, and the external rod 7 plays a major role in transmitting force, it is easy to break during use. Therefore, the structural stability of the external rod 7 is very important. Therefore, a bearing cover 11 can be welded on the outer wall of the valve body 1 within the range of the handle mounting seat 4, the external rod 7 passes through the bearing cover 11, and a bearing is installed in the bearing cover 11. The external rod 7 and the inner ring of the bearing are interference fit, so that the structural stability of the external rod 7 can be guaranteed under the stabilizing effect of the bearing, thereby making the rotation of the valve stem 3 and the blade 2 more stable.

[0036] Reference Figure 1 A fan blade 5 and a valve control handle 6 are arranged on the handle mounting seat 4. The fan blade 5 and the valve control handle 6 are actually an integrated structure. The central angle corresponding to the arc of the fan blade 5 is 90°, that is, the fan blade 5 is a quarter circle. The central angle of the fan blade 5 and the external rod 7 are connected by a connecting component 8. Therefore, the fan blade 5 can be driven to rotate by rotating the valve control handle 6. The connecting component 8 serves as the rotation fulcrum of the fan blade 5, which can drive the external rod 7 to rotate, and then drive the valve stem 3 and the blade 2 to rotate, so as to achieve the purpose of opening and closing the valve and controlling the ventilation volume of the valve.

[0037] Combined with Figure 3 Specifically, the connecting component 8 is a circular end 81 with a circular radial cross section, the circular end 81 and the external rod 7 are coaxially welded, a circular hole 52 is provided on the fan 5, the circular end 81 can be adapted to be installed in the circular hole 52, and the circular end 81 and the fan 5 are welded and fixed, so that the fan 5 can drive the external rod 7 to rotate during the rotation process. For the valve control handle 6, a silicone sleeve can be sleeved on the outer side of the valve control handle 6 to increase the comfort of the staff's hands.

[0038] Reference Figure 3, It should be emphasized in this embodiment that a plurality of positioning circular holes 51 are continuously opened on the fan blade 5 and these plurality of positioning circular holes 51 are connected in sequence, and the central angle corresponding to the arc formed by the centers of the plurality of positioning circular holes 51 is 90°. For the convenience of understanding and in accordance with common sense design, the number of positioning circular holes 51 is set to seven, so the central angle corresponding to the arc formed by the centers of each two adjacent positioning circular holes 51 is 15°, so there are seven gears from left to right on the fan blade 5, namely 0° gear, 15° gear, 30° gear, 45° gear, 60° gear, 75° gear and 90° gear, a fixing component 9 is arranged between the fan blade 5 and the valve mounting seat, the fixing component 9 always passes through a positioning circular hole 51 and the fixing component 9 can be switched arbitrarily among the seven positioning circular holes 51 without being disassembled during the rotation of the fan blade 5, and the operation is relatively simple, and the fixing component 9 can be locked after the corresponding gear is adjusted. Here, it is explained that when the fixing component 9 is in the leftmost positioning hole 51 on the blade 5, it is the 0° gear position, at which the blade 2 inside the valve body 1 is in a state of completely closing the valve channel, and when the fixing component 9 is in the rightmost positioning hole 51 on the blade 5, it is the 90° gear position, at which the blade 2 inside the valve body 1 is in a 90° open state, that is, in a fully open state. As for the 15° gear position, 30° gear position, 45° gear position, 60° gear position, and 75° gear position, they correspond to different openings of the blade 2 in the valve body 1, respectively, so that the staff can accurately control the opening and closing of the valve and the ventilation volume of the valve outside the ventilation duct.

[0039] Specifically, the fixing component 9 includes a butterfly screw 91 and a nut 92. A through hole corresponding to the position of the positioning circular hole 51 is opened on the handle mounting base 4. The nut 92 is welded to the bottom surface of the handle mounting base 4 and the positions of the nut 92 and the through hole correspond. The butterfly screw 91 passes through the positioning circular hole 51 and the through hole and is threadedly connected with the nut 92. Therefore, in the process of the valve control handle 6 controlling the fan blade 5 to rotate to adjust the gear position, it is only necessary to loosen the butterfly screw 91, and there is no need to completely remove the butterfly screw 91, so the operation is more convenient. In the process of adjusting the gear position, the butterfly screw 91 can be switched in the seven positioning circular holes 51. When the gear position is adjusted, that is, the opening of the blade 2 is adjusted, the butterfly screw 91 can be tightened to fix the fan blade 5 and the blade 2.

[0040] The implementation principle of a valve used in an anti-corrosion pipeline in the present embodiment is as follows: the valve control handle 6 can control the rotation of the fan blade 5, and under the action of the fan blade 5, the valve stem 3 and the blade 2 can be driven to rotate, thereby achieving the purpose of opening and closing the valve and controlling the ventilation volume of the valve. However, in this process, seven positioning circular holes 51 are set on the fan blade 5 and the central angle of the arc formed by the center of the seven positioning circular holes 51 is 90°, that is, seven gears are set on the fan blade 5, and the seven gears are fixed in conjunction with the fixing component 9. Therefore, the staff can accurately control the rotation amplitude of the blade 2 inside the valve body 1 outside the ventilation duct, thereby accurately controlling the opening and closing of the valve and the ventilation volume of the valve.

[0041] Embodiment 2

[0042] Reference Figure 4 , the difference between this embodiment and the first embodiment lies in the improvement of the structure of the connecting component 8. Specifically, the structure of the connecting component 8 of this embodiment is a polygonal end 82 with a polygonal radial cross section. The polygonal end 82 can actually be a triangle, a quadrilateral, a pentagon, a hexagon, etc. This embodiment takes the polygonal end 82 with a regular quadrilateral as an example. The polygonal end 82 and the external rod 7 are coaxially welded, and a polygonal hole 53 with a regular quadrilateral structure is opened on the fan blade 5. The polygonal end 82 can be fitted and installed in the polygonal hole 53. In this way, locking can be achieved by utilizing the structural advantage. Without welding, the fan blade 5 can drive the blade 2 to rotate when it rotates. Of course, welding and fixing the polygonal end 82 and the fan blade 5 will make the fixing effect of the connecting component 8 better.

[0043] Overall, the connecting component 8 composed of the polygonal end 82 and the polygonal hole 53 has better stability and more reliable fixation than the connecting component 8 composed of the circular end 81 and the circular hole 52. Even if the welding part between the polygonal end 82 and the polygonal hole 53 on the fan blade 5 is detached, the structural advantage can be used to achieve locking, so the blade 2 will not deflect and can still maintain a relatively stable state inside the valve body 1.

[0044] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A valve used in anti-corrosion pipelines, characterized in that: The valve body (1) comprises a valve body (1), the inner surface of which is coated with a Teflon layer, a blade (2) is arranged inside the valve body (1), a gap is formed between the outer ring of the blade (2) and the inner surface of the valve body (1), two sections of valve stem (3) are arranged inside the valve body (1), the two sections of the valve stem (3) are symmetrically distributed with respect to the blade (2) and are fixedly connected to the blade (2), and the two sections of the valve stem (3) are rotatably connected to the valve body (1), the outer sides of the blade (2) and the two sections of the valve stem (3) are sleeved with a fluororubber sleeve (10), and the outer ring of the fluororubber sleeve (10) is tightly pressed against the inner surface of the valve body (1); A handle mounting seat (4) is provided on the outer wall of the valve body (1) at one of the valve stems (3); a blade (5) and a valve control handle (6) fixedly connected to the blade (5) are provided on the handle mounting seat (4); an external connecting rod (7) is fixedly connected to the valve stem (3); the external connecting rod (7) passes through the handle mounting seat (4); a connecting component (8) is provided between the blade (5) and the external connecting rod (7); and a plurality of positioning circular holes (51) are continuously provided on the blade (5). Furthermore, the positioning circular holes (51) are connected in sequence, and the central angle of the arc formed by the centers of the plurality of positioning circular holes (51) is 90°. A fixing component (9) is provided between the blade (5) and the handle mounting seat (4), and the fixing component (9) passes through the positioning circular holes (51). When the fixing component (9) is respectively located at the positioning circular holes (51) at the two ends of the blade (5), the blade (2) is in a completely closed state and a 90° open state inside the valve body (1).

2. A valve for use in an anti-corrosion pipeline as claimed in claim 1, characterized in that: The number of the positioning circular holes (51) is set to seven, that is, the central angle of the arc formed by the centers of each two adjacent positioning circular holes (51) is 15°. When the fixing component (9) is respectively in the first positioning circular hole (51), the second positioning circular hole (51), the third positioning circular hole (51), the fourth positioning circular hole (51), the fifth positioning circular hole (51), the sixth positioning circular hole (51) and the seventh positioning circular hole (51) on the fan blade (5), the blade (2) is respectively in a completely closed state of 0°, an open state of 15°, an open state of 30°, an open state of 45°, an open state of 60°, an open state of 75° and an open state of 90° inside the valve body (1).

3. A valve for use in an anti-corrosion pipeline as claimed in claim 1, characterized in that: The fixing component (9) comprises a butterfly screw (91) and a nut (92); a through hole corresponding to the positioning circular hole (51) is provided on the handle mounting seat (4); the nut (92) is fixedly connected to the bottom surface of the handle mounting seat (4) and the nut (92) corresponds to the through hole; after the butterfly screw (91) passes through the positioning circular hole (51) and the through hole, it is threadedly connected to the nut (92).

4. A valve for use in an anti-corrosion pipeline as claimed in claim 1, characterized in that: A bearing cover (11) is provided on the outer wall of the valve body (1), the bearing cover (11) is located inside the handle mounting seat (4), the external connecting rod (7) passes through the bearing cover (11), a bearing is provided inside the bearing cover (11), and the external connecting rod (7) and the inner ring of the bearing are interference fit.

5. A valve for use in an anti-corrosion pipeline as claimed in claim 1, characterized in that: The connecting component (8) comprises a circular end (81) fixedly connected to the external connecting rod (7); a circular hole (52) is provided on the fan blade (5); the circular end (81) is adapted to be installed in the circular hole (52); and the circular end (81) and the fan blade (5) are welded.

6. A valve for use in an anti-corrosion pipeline as claimed in claim 1, characterized in that: The connecting component (8) comprises a polygonal end head (82) fixedly connected to the external connecting rod (7); a polygonal hole (53) is provided on the fan blade (5); and the polygonal end head (82) is adapted to be installed in the polygonal hole (53).

7. A valve for use in an anti-corrosion pipeline as claimed in claim 6, characterized in that: The polygonal end (82) and the fan blade (5) are welded.

8. A valve for use in an anti-corrosion pipeline as claimed in claim 1, characterized in that: The valve control handle (6) is sleeved with a silicone sleeve.

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