Vacuum butterfly valve with high stability

Abstract

The utility model provides a vacuum butterfly valve with high stability, and belongs to the technical field of vacuum butterfly valves. The high-stability vacuum butterfly valve comprises a valve body, a valve rod rotationally arranged on the valve body and a butterfly plate fixedly installed on the valve rod, the two ends of the valve rod are rotationally connected to the inner wall of the valve body, the two sides of the butterfly plate are each fixedly connected with a set of stabilizing rods, and the two sets of stabilizing rods are symmetrically distributed on the two sides of the butterfly plate; the top end of the stabilizing rod penetrates through the valve body and then is connected with a rotating body, and a locking component is arranged between the rotating body and the valve body. The stabilizing rods are arranged to support the butterfly plate from the two sides, so that the stress of the butterfly plate is more balanced when the butterfly plate is impacted by gas, the deformation of the butterfly plate can be effectively prevented, and the stability is improved. The butterfly plate has the advantages that the stability of the butterfly plate is improved, the butterfly plate is prevented from deforming, and the situation that the butterfly plate cannot be effectively locked and fixed due to mechanical abrasion is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of vacuum butterfly valves, and particularly relates to a vacuum butterfly valve with strong stability. Background Art

[0002] A vacuum butterfly valve is a commonly used valve, mainly used in vacuum systems and ventilation, environmental protection projects in industries such as chemical industry, building materials, power stations, and glass, in the dust-containing cold air or hot air gas pipelines, as a gas medium flow regulating or cutting-off device. The vacuum butterfly valve controls the gas flow by rotating the butterfly plate. When the valve is closed, the butterfly plate completely seals the pipeline to prevent gas flow; when the valve is opened, the butterfly plate rotates, allowing the gas in the pipeline to flow. The rotation angle of the butterfly plate can be manually controlled to achieve precise control of gas flow.

[0003] In the actual application process of the vacuum butterfly valve, due to the long-term rotation between the valve stem of the butterfly plate and the valve body and the impact pressure of the gas, it is extremely easy to cause deformation of the butterfly plate and mechanical wear between the valve stem and the valve body, resulting in poor stability when the butterfly plate controls the gas flow. Summary of the Utility Model

[0004] To solve the above technical problems, the utility model proposes a vacuum butterfly valve with strong stability.

[0005] The technical solution of the utility model is realized as follows:

[0006] A vacuum butterfly valve with strong stability includes a valve body, a valve stem rotatably arranged on the valve body, and a butterfly plate fixedly installed on the valve stem. Both ends of the valve stem are rotatably connected to the inner wall of the valve body. A set of stabilizing rods are fixedly connected to both sides of the butterfly plate, and the two sets of stabilizing rods are symmetrically distributed on both sides of the butterfly plate. The top of the stabilizing rod passes through the valve body and is connected to a rotating body, and a locking component is arranged between the rotating body and the valve body. By setting the stabilizing rods to support the butterfly plate from both sides, the force on the butterfly plate is more balanced when it is subjected to gas impact, which can effectively prevent the deformation of the butterfly plate and improve stability.

[0007] Furthermore, two arc-shaped through grooves are arranged on the valve body, and one end of each of the two sets of stabilizing rods passes through the two arc-shaped through grooves respectively, and the rotating body is rotatably installed on the surface of the valve body. The arc-shaped through grooves guide and limit the stabilizing rods during the rotation of the butterfly plate, improving the stability during the rotation of the butterfly plate.

[0008] Furthermore, a columnar body protrudes from the surface of the valve body, the arc-shaped through groove penetrates the columnar body, and the rotating body includes a column sleeve rotatably sleeved outside the columnar body. By setting the columnar body and the column sleeve, it is more convenient to arrange the stabilizing rods passing through the arc-shaped through grooves. In addition, the sealing performance of the vacuum butterfly valve can be improved.

[0009] Further, a sealing groove is formed on the end face of the columnar body away from the valve body. The arc-shaped through groove is located outside the sealing groove. At the center of the end face of the columnar body away from the valve body, a columnar seal body is fixedly arranged. The columnar seal body is located inside the sealing groove. An annular seal body inserted into the sealing groove is arranged on the end face of the column sleeve facing the pipeline, and a sleeve groove adapted to the outer diameter of the columnar seal body is arranged at the center of the column sleeve. By inserting the annular seal body into the sealing groove and sleeving the columnar seal body through the sleeve groove, the sealing performance of the vacuum butterfly valve can be further improved.

[0010] Further, a ring body part with an inner diameter adapted to the outer diameter of the rotating body is arranged on the outer side of the end face of the column sleeve facing the pipeline. By sleeving the ring body part on the outer side of the columnar part away from the valve body in an interference fit manner, the sealing performance of the vacuum butterfly valve can be further improved. At the same time, the stability of the rotating body when rotating outside the columnar body can be improved.

[0011] Further, the rotating body includes a driving gear disc and a driving gear groove. The axial length of the sleeve groove is greater than the axial length of the columnar seal body. A circle of driving gear grooves is arranged on the inner surface of the sleeve groove, and the driving gear grooves are axially located outside the columnar seal body. The driving gear disc meshes with the driving gear grooves. By meshing or separating the driving gear disc from the driving gear grooves, the unlocking and locking of the butterfly plate can be realized.

[0012] Further, a sleeve housing is fixedly arranged outside the valve body. The rotating body further includes a limiting rod fixedly arranged on the end face of the driving gear disc away from the valve body. The limiting rod is rotatably installed on the sleeve housing, and the locking component is arranged between the limiting rod and the columnar seal body. Through the cooperation of the sleeve housing and the limiting rod, the driving gear disc is axially fixed, ensuring that the driving gear disc always meshes effectively with the driving gear grooves.

[0013] Further, the locking component includes a locking gear groove, a locking gear disc, a threaded sleeve rod, and a locking bolt. A circle of locking gear grooves is arranged on the outer end face of the columnar seal body. The threaded sleeve rod is slidably arranged inside the limiting rod, and the inner end of the threaded sleeve rod sequentially penetrates through the limiting rod and the driving gear disc and is fixedly connected to the locking gear disc. The locking gear disc meshes with the locking gear grooves. The locking bolt is rotatably installed on the outer end of the limiting rod, and the inner end of the locking bolt is inserted into the limiting rod and is in threaded cooperation with the threaded sleeve rod. By rotating the locking bolt to drive the threaded sleeve rod to move inward and outward, the inward and outward movement of the locking gear disc can be controlled, and further, the switching between the locked and separated states of the locking gear disc and the locking gear grooves can be controlled.

[0014] Further, a wedge-shaped block is provided at one end of the tooth of the locking tooth disc facing the valve body, and a wedge-shaped groove for inserting the wedge-shaped block is provided at one end of the locking tooth groove facing the valve body. By providing the cooperation of the wedge-shaped block and the wedge-shaped groove, after the wedge-shaped block is inserted into the wedge-shaped groove and cannot be inserted further, the wedge-shaped block realizes stable engagement with the wedge-shaped groove, which can improve the locking effect on the butterfly plate. Especially after the locking tooth disc and the locking tooth groove are worn, the cooperation of the wedge-shaped block and the wedge-shaped groove can effectively lock the butterfly plate.

[0015] Further, a circular groove is provided at the center of the outer end face of the cylindrical seal body, the locking tooth groove is provided on the inner side wall of the circular groove, a spring is provided on the inner bottom wall of the circular groove, and the top of the spring is connected with a support plate, and the support plate supports on the inner end face of the locking tooth disc. During the process of inserting the locking tooth disc into the locking tooth groove, the spring provides a damping force by being compressed, which can prevent mechanical wear caused by excessive rotation of the locking bolt.

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

[0017] 1. By providing the stabilizing rod to support and stabilize the butterfly plate from both sides of the auxiliary valve rod, the ability of the butterfly plate to resist gas impact can be improved, making the butterfly plate less likely to deform, and thus improving the stability of the vacuum butterfly valve.

[0018] 2. Through the cooperation of the wedge-shaped block and the wedge-shaped groove, the butterfly plate can be effectively locked and fixed by inserting the wedge-shaped block into the wedge-shaped groove until it cannot be inserted. Especially when the valve rod and the stabilizing rod are in a state of mechanical wear, the wedge-shaped block can be inserted into the wedge-shaped groove until it cannot be inserted further to achieve the locking and fixing effect on the butterfly plate. Description of the Drawings

[0019] Figure 1 is a schematic diagram of the vacuum butterfly valve with strong stability of the utility model.

[0020] Figure 2 is the utility model Figure 1 Enlarged view of part A in.

[0021] Figure 3 is a schematic diagram of the columnar body arranged on the valve body of the utility model.

[0022] Figure 4 is the utility model Figure 3 Enlarged view of part B in.

[0023] Figure 5 is the utility model Figure 1 Front view of.

[0024] Figure 6It is an overall schematic diagram of the swivel body and the stabilizing rod of the present utility model.

[0025] Figure 7 It is a schematic diagram of the threaded sleeve rod of the present utility model.

[0026] Figure 8 It is a schematic diagram of the swivel body of the present utility model.

[0027] Figure 9 It is the present utility model Figure 8 The enlarged view at position C in.

[0028] Figure 10 It is a schematic diagram of the column sleeve of the present utility model.

[0029] In the figure: 1, valve body; 2, valve stem; 3, butterfly plate; 4, stabilizing rod; 5, swivel body; 5.1, column sleeve; 5.2, driving gear disc; 5.3, driving tooth groove; 6, locking component; 6.1, locking tooth groove; 6.2, locking gear disc; 6.3, threaded sleeve rod; 6.4, locking bolt; 7, arc-shaped through groove; 8, columnar body; 9, sealing groove; 10, columnar seal body; 11, annular seal body; 12, sleeve groove; 13, ring body part; 14, sleeve housing; 15, limiting rod; 16, wedge-shaped block; 17, wedge-shaped groove; 18, circular groove; 19, spring; 20, support plate. Specific embodiments

[0030] Next, the technical solutions in the embodiments of the present utility model will be described clearly and completely. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0031] Refer to Figures 1 to 5 , a vacuum butterfly valve with strong stability, including a valve body 1, a valve stem 2 rotatably arranged on the valve body 1, and a butterfly plate 3 fixedly installed on the valve stem 2. Both ends of the valve stem 2 are rotatably connected to the inner wall of the valve body 1. A set of stabilizing rods 4 are fixedly connected to both sides of the butterfly plate 3. The two sets of stabilizing rods 4 are symmetrically distributed on both sides of the butterfly plate 3. The top end of the stabilizing rod 4 passes through the valve body 1 and is connected to a swivel body 5. A locking component 6 is arranged between the swivel body 5 and the valve body 1. By using the locking component 6 to lock the swivel body 5 on the valve body 1, the butterfly plate 3 can be locked, and then the butterfly plate 3 can be fixed at the required opening angle. By arranging the stabilizing rod 4 to cooperate with the valve stem 2 to stabilize the butterfly plate 3, the anti-gas impact performance of the butterfly plate 3 is improved, and the deformation of the butterfly plate 3 can be better prevented, thereby improving the stability of the vacuum butterfly valve.

[0032] Refer to Figure 4, two arc-shaped through grooves 7 are provided on the valve body 1. One end of each of the two groups of stabilizing rods 4 passes through the two arc-shaped through grooves 7 respectively, and the rotating body 5 is rotatably installed on the surface of the valve body 1. During the opening process of the butterfly plate 3, the arc-shaped through groove 7 is used for the displacement of the stabilizing rod 4.

[0033] Reference Figure 4 and Figure 6 , a columnar body 8 protrudes outward from the surface of the valve body 1. The arc-shaped through groove 7 penetrates through the columnar body 8. The rotating body 5 includes a column sleeve 5.1 rotatably sleeved outside the columnar body 8. The columnar body 8 serves as a supporting part for installing the rotating body 5. By making the shape of the column sleeve 5.1 match that of the columnar body 8, the sealing performance can be improved, and the sealing design is more convenient. The top end of the stabilizing rod 4 is fixedly connected to one end face of the column sleeve 5.1 facing the valve body 1.

[0034] Reference Figure 4 and Figure 10 , a sealing groove 9 is formed on one end face of the columnar body 8 away from the valve body 1. The arc-shaped through groove 7 is located outside the sealing groove 9. A columnar seal body 10 is fixedly arranged at the center of one end face of the columnar body 8 away from the valve body 1. The columnar seal body 10 is located inside the sealing groove 9. An annular seal body 11 inserted into the sealing groove 9 is arranged on one end face of the column sleeve 5.1 facing the pipeline, and a sleeve groove 12 adapted to the outer diameter of the columnar seal body 10 is arranged at the center of the column sleeve 5.1.

[0035] By sleeving the sleeve groove 12 on the outside of the columnar seal body 10 in an interference fit manner, inserting the annular seal body 11 into the sealing groove 9 and connecting it with the sealing groove 9 in an interference fit manner, the overall sealing performance of the vacuum butterfly valve can be greatly improved, and the gas entering the arc-shaped through groove 7 can be prevented from overflowing.

[0036] Reference Figure 10 , a ring body part 13 with an inner diameter adapted to the outer diameter of the rotating body 5 is arranged on the outside of one end face of the column sleeve 5.1 facing the pipeline. The ring body part 13 wraps the outer side end of the columnar body 8 and is connected in an interference fit manner, which can further improve the sealing performance.

[0037] Reference Figures 6 to 8 , the rotating body 5 includes a driving gear disc 5.2 and a driving tooth groove 5.3. The axial length of the sleeve groove 12 is greater than the axial length of the columnar seal body 10. A circle of driving tooth grooves 5.3 is arranged on the inner surface of the sleeve groove 12, and the driving tooth grooves 5.3 are axially located outside the columnar seal body 10. The driving gear disc 5.2 meshes with the driving tooth grooves 5.3. When the driving gear disc 5.2 rotates, the rotating body 5 is driven to rotate through the driving tooth grooves 5.3. The rotating body 5 drives the stabilizing rod 4 to displace in the arc-shaped through groove 7. At this time, the stabilizing rod 4 drives the butterfly plate 3 to rotate, so as to adjust the opening state of the vacuum butterfly valve.

[0038] Reference Figure 1 and Figure 2, a housing 14 is fixedly arranged outside the valve body 1. The rotating body 5 further includes a limiting rod 15 fixedly arranged at one end face of the driving gear disk 5.2 away from the valve body 1. The limiting rod 15 is rotatably installed on the housing 14, and the locking component 6 is arranged between the limiting rod 15 and the cylindrical seal body 10. Through the cooperation of the housing 14 and the limiting rod 15, the limiting rod 15 and the driving gear disk 5.2 can be fixed in the axial direction of the limiting rod 15, so that the limiting rod 15 and the driving gear disk 5.2 will not move inward or outward.

[0039] Reference Figure 1 , Figure 2 , Figures 5 to 7 , the locking component 6 includes a locking tooth groove 6.1, a locking gear disk 6.2, a threaded sleeve rod 6.3 and a locking bolt 6.4. The locking tooth groove 6.1 is arranged in a circle on the outer end face of the cylindrical seal body 10. The threaded sleeve rod 6.3 is slidably arranged inside the limiting rod 15, and the inner end of the threaded sleeve rod 6.3 sequentially passes through the limiting rod 15 and the driving gear disk 5.2 and is fixedly connected to the locking gear disk 6.2. The locking gear disk 6.2 meshes with the locking tooth groove 6.1. The locking bolt 6.4 is rotatably installed on the outer end of the limiting rod 15, and the inner end of the locking bolt 6.4 is inserted into the limiting rod 15 and is in threaded cooperation with the threaded sleeve rod 6.3.

[0040] By rotating the locking bolt 6.4, the threaded sleeve rod 6.3 can be controlled to reciprocate axially inside the limiting rod 15. When the threaded sleeve rod 6.3 moves inward, the locking gear disk 6.2 can be driven to insert into the locking tooth groove 6.1. At this time, the locking tooth groove 6.1 locks and fixes the locking gear disk 6.2, the locking gear disk 6.2 locks and fixes the limiting rod 15, and the limiting rod 15 locks and fixes the driving gear disk 5.2. Furthermore, the driving gear disk 5.2 locks and fixes the rotating body 5 through the driving tooth groove 5.3, so as to lock and fix the butterfly plate 3 in a preset opening state.

[0041] On the contrary, when the threaded sleeve rod 6.3 moves outward, the locking gear disk 6.2 can be driven to disengage from the locking tooth groove 6.1. At this time, rotating the limiting rod 15 can drive the locking gear disk 6.2 and the driving gear disk 5.2 to rotate synchronously. The driving gear disk 5.2 drives the rotating body 5 to rotate through the driving tooth groove 5.3, and then the opening state of the butterfly plate 3 can be adjusted.

[0042] Reference Figure 4 and Figure 7, a wedge block 16 is provided at one end of the tooth of the locking tooth disc 6.2 facing the valve body 1, and a wedge groove 17 for the wedge block 16 to insert is provided at one end of the locking tooth groove 6.1 facing the valve body 1. With such a setting, during the process of rotating the locking bolt 6.4 to drive the threaded sleeve rod 6.3 to drive the locking tooth disc 6.2 into the locking tooth groove 6.1, when the bottom end of the wedge block 16 contacts the side wall of the wedge groove 17, the locking tooth disc 6.2 cannot continue to be inserted into the locking tooth groove 6.1. At this time, the locking tooth groove 6.1 can effectively limit the locking tooth disc 6.2. At the same time, by using the cooperation of the wedge block 16 and the wedge groove 17, during each locking of the butterfly plate 3, only need to rotate the locking bolt 6.4 to the state where it cannot be rotated further. In this state, the wedge block 16 is in a state of pressing against the wedge groove 17, and can ensure that it is always in an effective locking state, which can avoid errors caused by wear and deformation and improve the locking effect.

[0043] Reference Figure 8 and Figure 9 , a circular groove 18 is opened at the center of the outer end face of the cylindrical seal body 10. The locking tooth groove 6.1 is opened on the inner side wall of the circular groove 18. A spring 19 is provided on the inner bottom wall of the circular groove 18. The top end of the spring 19 is connected with a support plate 20, and the support plate 20 supports on the inner end face of the locking tooth disc 6.2. The spring 19 applies an outward elastic force to the locking tooth disc 6.2 through the circular groove 18. During the process of driving the tooth disc 5.2 to displace inward, the elastic force provided by the deformation of the spring 19 can increase the damping effect and prevent the excessive rotation of the locking bolt 6.4.

[0044] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A vacuum butterfly valve with high stability, comprising a valve body (1), a valve stem (2) rotatably mounted on the valve body (1), and a butterfly plate (3) fixedly mounted on the valve stem (2), characterized in that: The two ends of the valve stem (2) are rotatably connected to the inner wall of the valve body (1), and the two sides of the butterfly plate (3) are fixedly connected to a group of stabilizing rods (4). The two groups of stabilizing rods (4) are symmetrically distributed on the two sides of the butterfly plate (3). The top end of the stabilizing rod (4) passes through the valve body (1) and is connected to a swivel (5). A locking component (6) is provided between the swivel (5) and the valve body (1).

2. A vacuum butterfly valve with strong stability as claimed in claim 1, characterized in that: The valve body (1) is provided with two arc-shaped through grooves (7), one end of the two groups of stabilizing rods (4) respectively passes through the two arc-shaped through grooves (7), and the rotating body (5) is rotatably mounted on the surface of the valve body (1).

3. A vacuum butterfly valve with strong stability as claimed in claim 2, characterized in that: A columnar body (8) protrudes from the surface of the valve body (1); the arc-shaped through groove (7) passes through the columnar body (8); and the rotating body (5) comprises a column sleeve (5.1) rotatably sleeved on the outside of the columnar body (8).

4. A vacuum butterfly valve with strong stability as claimed in claim 3, characterized in that: A sealing groove (9) is provided on one end face of the columnar body (8) away from the valve body (1), the arc-shaped through groove (7) is located outside the sealing groove (9), a cylindrical sealing body (10) is fixedly provided at the center of one end face of the columnar body (8) away from the valve body (1), the cylindrical sealing body (10) is located on the inner side of the sealing groove (9), an annular sealing body (11) inserted into the sealing groove (9) is provided on one end face of the column sleeve (5.1) facing the pipeline, and a sleeve groove (12) matching the outer diameter of the cylindrical sealing body (10) is provided at the center of the column sleeve (5.1).

5. A vacuum butterfly valve with strong stability as claimed in claim 3, characterized in that: An annular body portion (13) having an inner diameter matching the outer diameter of the swivel (5) is provided on the outer side of one end surface of the column sleeve (5.1) facing the pipeline.

6. A vacuum butterfly valve with strong stability as claimed in claim 4, characterized in that: The swivel (5) comprises a driving toothed disc (5.2) and a driving tooth groove (5.3), wherein the axial length of the sleeve groove (12) is greater than the axial length of the cylindrical sealing body (10), and the driving tooth groove (5.3) is formed on the inner surface of the sleeve groove (12). A circle is provided, and the driving tooth groove (5.3) is axially located outside the cylindrical sealing body (10), and the driving tooth disc (5.2) is meshed with the driving tooth groove (5.3).

7. A vacuum butterfly valve with strong stability as claimed in claim 6, characterized in that: A sleeve (14) is fixedly arranged outside the valve body (1), and the swivel (5) further comprises a limit rod (15) fixedly arranged on an end surface of the driving gear disc (5.2) away from the valve body (1), the limit rod (15) being rotatably mounted on the sleeve (14), and the locking component (6) being arranged between the limit rod (15) and the columnar sealing body (10).

8. A vacuum butterfly valve with strong stability as claimed in claim 7, characterized in that: The locking component (6) comprises a locking tooth groove (6.1), a locking tooth disc (6.2), a threaded sleeve rod (6.3) and a locking bolt (6.4); the locking tooth groove (6.1) is provided with a circle on the outer end surface of the cylindrical sealing body (10); the threaded sleeve rod (6.3) is slidably provided inside the limiting rod (15); the inner side end of the threaded sleeve rod (6.3) sequentially penetrates the limiting rod (15) and the driving tooth disc (5.2) to be fixedly connected to the locking tooth disc (6.2); the locking tooth disc (6.2) is meshed with the locking tooth groove (6.1); the locking bolt (6.4) is rotatably mounted on the outer side end of the limiting rod (15); and the inner side end of the locking bolt (6.4) is inserted into the limiting rod (15) and then threadably matched with the threaded sleeve rod (6.3).

9. A vacuum butterfly valve with strong stability as claimed in claim 8, characterized in that: The end of the locking toothed disc (6.2) with teeth disposed facing the valve body (1) is provided with a wedge block (16), and the end of the locking tooth groove (6.1) facing the valve body (1) is provided with a wedge groove (17) for inserting the wedge block (16).

10. A vacuum butterfly valve with strong stability as claimed in claim 8, characterized in that: A circular groove (18) is provided at the center of the outer end surface of the cylindrical sealing body (10); the locking tooth groove (6.1) is provided on the inner side wall of the circular groove (18); a spring (19) is provided on the inner bottom wall of the circular groove (18); a support plate (20) is connected to the top end of the spring (19); and the support plate (20) is supported on the inner side end surface of the locking toothed disc (6.2).

Images