Novel three-eccentric all-metal hard sealing two-way pressure butterfly valve

Abstract

The utility model relates to the technical field of two-way pressure butterfly valves, and discloses a novel three-eccentric all-metal hard sealing two-way pressure butterfly valve which comprises a valve body, a connecting sleeve is fixedly installed on the top of the valve body, an installing sleeve is connected to the top of the connecting sleeve through a bolt, and a transmission rod is rotationally connected to the inner side of the installing sleeve. A hand wheel is fixedly mounted on the left side of the transmission rod, a transmission bevel gear is fixedly mounted on the right side of the transmission rod, a valve shaft penetrating through the valve body is rotationally connected to the inner side wall of the mounting sleeve, a driven bevel gear meshed with the transmission bevel gear is fixedly mounted on the outer side of the valve shaft, and a stabilizing sleeve is fixedly mounted at the bottom of the valve body. According to the novel three-eccentric all-metal hard sealing two-way pressure butterfly valve, the valve plate can be replaced, so that the phenomenon that the valve plate is not tightly sealed easily due to the fact that the valve plate is corroded by conveyed materials is avoided, and the sealing performance of the three-eccentric two-way pressure butterfly valve is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of bidirectional pressure butterfly valves, in particular to a novel three-eccentric all-metal hard-sealed bidirectional pressure butterfly valve. Background Art

[0002] A two-way pressure butterfly valve is a butterfly valve that can achieve sealing in two directions, that is, whether the medium flows in the forward or reverse direction, the valve can be sealed to prevent medium leakage. The design of this valve usually adopts a butterfly plate and a radial dynamic balance sealing system. By increasing the strength of the valve stem and butterfly plate and the torque of the driving device, the two-way sealing of the butterfly valve is achieved with zero leakage.

[0003] The butterfly valve has a three-eccentric bidirectional pressure butterfly valve in which the valve shaft axis deviates from the center of the disc and the center of the body at the same time, and the sealing pair is an oblique cone. Compared with the traditional butterfly valve, the three-eccentric bidirectional pressure butterfly valve has stronger resistance to high temperature, high pressure and corrosion, and there is no direct friction between the valve plate and the valve body when opening and closing, and the service life is long.

[0004] The existing three-eccentric two-way pressure butterfly valve, when the three-eccentric two-way pressure butterfly valve is used in high temperature, high pressure and corrosive conditions, the pressure in the pipeline is high, the medium flow rate is fast, and the valve plate is in a partially open or fully open state, the valve plate is easily corroded by the conveying material. Under the long-term erosion of the conveying material, the valve plate is prone to poor sealing, thereby causing the sealing performance of the valve to decrease, making the conveying material prone to leakage. Therefore, the present application proposes a new three-eccentric all-metal hard-sealed two-way pressure butterfly valve to solve the above technical problems. Utility Model Content

[0005] 1. Technical issues to be solved

[0006] In view of the deficiencies in the prior art, the utility model provides a novel three-eccentric all-metal hard-sealed bidirectional pressure butterfly valve, which has the advantages of improved sealing performance and solves the problem that the valve plate is prone to poor sealing due to long-term erosion of the conveyed material.

[0007] (II) Technical solution

[0008] In order to achieve the above-mentioned purpose of improving the sealing performance, the utility model provides the following technical solutions: a novel three-eccentric all-metal hard-sealed bidirectional pressure butterfly valve, comprising a valve body, a connecting sleeve is fixedly installed on the top of the valve body, a mounting sleeve is bolted to the top of the connecting sleeve, a transmission rod is rotatably connected to the inner side of the mounting sleeve, a hand wheel is fixedly installed on the left side of the transmission rod, and a transmission bevel gear is fixedly installed on the right side of the transmission rod;

[0009] The inner side wall of the mounting sleeve is rotatably connected with a valve shaft penetrating the valve body, the outer side of the valve shaft is fixedly mounted with a driven bevel gear meshing with the transmission bevel gear, the bottom of the valve body is fixedly mounted with a stabilizing sleeve, the outer side of the valve shaft is fixedly mounted with two connecting shafts, and the other end of the connecting shaft is fixedly mounted with a connecting plate;

[0010] Two limiting mechanisms are installed inside the connecting plate, a mounting groove is provided on the side of the connecting plate away from the valve shaft, a connecting block is movably installed on the inner side wall of the mounting groove, and a valve plate is fixedly installed on the side of the connecting block away from the valve shaft.

[0011] Preferably, a mounting hole is opened on the left side of the connecting sleeve, a bearing is fixedly mounted on the inner side wall of the mounting hole, and the transmission rod is fixedly mounted at the axis center of the bearing.

[0012] Preferably, the outer side of the valve shaft is tightly fitted with the penetration point between the valve shaft and the valve body, and the bottom of the valve shaft is rotatably connected to the inner wall of the stabilizing sleeve.

[0013] Preferably, the two connecting shafts are symmetrically fixedly mounted on the outer side of the valve shaft.

[0014] Preferably, the mounting groove is an annular mounting groove, and the connecting block is an annular connecting block.

[0015] Preferably, the limiting mechanism includes a fixing groove provided inside the connecting plate, a supporting plate is fixedly installed on the inner side wall of the fixing groove, a limiting groove is provided on the inner side wall of the connecting block, a sliding hole connected to the fixing groove is provided on the side of the connecting plate away from the valve shaft, a limiting rod located in the limiting groove is slidably connected to the inner side of the supporting plate, a blocking plate is fixedly installed on the outer side of the limiting rod, and a return spring sleeved on the outer side of the limiting rod is fixedly installed on the side of the blocking plate close to the support plate.

[0016] Preferably, the limiting rod is an L-shaped limiting rod, and the L end of the limiting rod is slidably connected in the sliding hole.

[0017] (III) Beneficial effects

[0018] Compared with the prior art, the utility model provides a new three-eccentric all-metal hard-sealed bidirectional pressure butterfly valve, which has the following beneficial effects:

[0019] The new three-eccentric all-metal hard-sealed two-way pressure butterfly valve drives the transmission bevel gear on the right side of the transmission rod to rotate through a hand wheel, and the transmission bevel gear meshes with the driven bevel gear, so that the transmission bevel gear drives the driven bevel gear to rotate, thereby the transmission bevel gear drives the valve shaft to rotate, and the valve shaft drives the valve plate installed on the connecting plate to rotate through the connecting shaft, so that the opening and closing of the three-eccentric two-way pressure butterfly valve can be controlled, and the limit rod is pulled, and the limit rod drives the blocking plate to compress the reset spring. After the limit rod is pulled out of the limit groove, the valve plate can be removed from the installation groove, and after the connecting block of the new valve plate is placed in the installation groove, the limit rod is released, and the limit rod automatically enters the limit groove under the action of the reset spring, so that the valve plate can be limited, so that the valve plate can be replaced, thereby preventing the valve plate from being corroded by the conveying material, and then making the valve plate easy to seal poorly, thereby improving the sealing performance of the three-eccentric two-way pressure butterfly valve. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0021] Figure 2 This is a schematic diagram of the cross-sectional structure of the utility model;

[0022] Figure 3 For this utility model Figure 2 The enlarged schematic diagram at A in the middle;

[0023] Figure 4 It is a three-dimensional schematic diagram of the connecting block and the valve plate of the utility model.

[0024] In the figure: 1. valve body; 2. connecting sleeve; 3. mounting sleeve; 4. transmission rod; 5. hand wheel; 6. transmission bevel gear; 7. valve shaft; 8. driven bevel gear; 9. stabilizing sleeve; 10. connecting shaft; 11. connecting plate; 12. limiting mechanism; 121. fixing groove; 122. supporting plate; 123. limiting groove; 124. sliding hole; 125. limiting rod; 126. blocking plate; 127. reset spring; 13. mounting groove; 14. connecting block; 15. valve plate. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-4A new type of three-eccentric all-metal hard-sealed bidirectional pressure butterfly valve includes a valve body 1, a connecting sleeve 2 is fixedly installed on the top of the valve body 1, a mounting hole is opened on the left side of the connecting sleeve 2, a bearing is fixedly installed on the inner wall of the mounting hole, a mounting sleeve 3 is bolted to the top of the connecting sleeve 2, a transmission rod 4 is rotatably connected to the inner side of the mounting sleeve 3, and the transmission rod 4 is fixedly installed at the axis of the bearing, so that the stability of the transmission rod 4 during rotation can be improved, a hand wheel 5 is fixedly installed on the left side of the transmission rod 4, and a transmission bevel gear 6 is fixedly installed on the right side of the transmission rod 4;

[0027] The inner wall of the mounting sleeve 3 is rotatably connected with a valve shaft 7 that penetrates the valve body 1, and the outer side of the valve shaft 7 is tightly fitted with the penetration of the valve shaft 7 and the valve body 1, so that the sealing performance of the three-eccentric bidirectional pressure butterfly valve can be improved, and the bottom of the valve shaft 7 is rotatably connected to the inner wall of the stabilizing sleeve 9, so that the stability of the valve shaft 7 during rotation can be improved, and the outer side of the valve shaft 7 is fixedly installed with a driven bevel gear 8 that meshes with the transmission bevel gear 6, and the bottom of the valve body 1 is fixedly installed with a stabilizing sleeve 9, and the outer side of the valve shaft 7 is fixedly installed with two connecting shafts 10, and the two connecting shafts 10 are symmetrically fixedly installed on the outer side of the valve shaft 7, and the other end of the connecting shaft 10 is fixedly installed with a connecting plate 11;

[0028] Two limiting mechanisms 12 are installed inside the connecting plate 11, and the limiting mechanisms 12 include a fixing groove 121 opened inside the connecting plate 11, and a support plate 122 is fixedly installed on the inner side wall of the fixing groove 121, and a limiting groove 123 is opened on the inner side wall of the connecting block 14. A sliding hole 124 connected to the fixing groove 121 is opened on the side of the connecting plate 11 away from the valve shaft 7, and a limiting rod 125 located in the limiting groove 123 is slidably connected on the inner side of the support plate 122. The limiting rod 125 is an L-shaped limiting rod, and the L end of the limiting rod 125 is slidably connected in the sliding hole 124, and a blocking plate 126 is fixedly installed on the outer side of the limiting rod 125, and a return spring 127 sleeved on the outer side of the limiting rod 125 is fixedly installed on the side of the blocking plate 126 close to the support plate 122.

[0029] A mounting groove 13 is provided on the side of the connecting plate 11 away from the valve shaft 7. The mounting groove 13 is an annular mounting groove. A connecting block 14 is movably installed on the inner side wall of the mounting groove 13. The connecting block 14 is an annular connecting block. This makes the stability of the valve plate 15 better and can improve the sealing performance of the three-eccentric bidirectional pressure butterfly valve. The valve plate 15 is fixedly installed on the side of the connecting block 14 away from the valve shaft 7.

[0030] In summary, the new three-eccentric all-metal hard-sealed two-way pressure butterfly valve drives the transmission bevel gear 6 on the right side of the transmission rod 4 to rotate through the hand wheel 5, and the transmission bevel gear 6 is engaged with the driven bevel gear 8, and the transmission bevel gear 6 drives the driven bevel gear 8 to rotate, so that the transmission bevel gear 6 drives the valve shaft 7 to rotate, and the valve shaft 7 drives the valve plate 15 installed on the connecting plate 11 to rotate through the connecting shaft 10, so that the opening and closing of the three-eccentric two-way pressure butterfly valve can be controlled, and the limit rod 125 is pulled, and the limit rod 125 will drive the blocking plate 126 to the reset spring 127 After compression and the limit rod 125 is pulled out from the limit groove 123, the valve plate 15 can be removed from the installation groove 13, and the connecting block 14 of the new valve plate 15 is placed in the installation groove 13, and the limit rod 125 is loosened. The limit rod 125 will automatically enter the limit groove 123 under the action of the reset spring 127, so that the valve plate 15 can be limited. In this way, the valve plate 15 can be replaced, thereby preventing the valve plate 15 from being corroded by the conveying material, which makes the valve plate 15 easy to seal poorly, thereby improving the sealing performance of the three-eccentric bidirectional pressure butterfly valve.

[0031] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0032] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A novel three-eccentric all-metal hard-sealed bidirectional pressure butterfly valve, comprising a valve body (1), characterized in that: A connecting sleeve (2) is fixedly mounted on the top of the valve body (1); a mounting sleeve (3) is bolted to the top of the connecting sleeve (2); a transmission rod (4) is rotatably connected to the inner side of the mounting sleeve (3); a hand wheel (5) is fixedly mounted on the left side of the transmission rod (4); and a transmission bevel gear (6) is fixedly mounted on the right side of the transmission rod (4); The inner side wall of the mounting sleeve (3) is rotatably connected to a valve shaft (7) penetrating the valve body (1); a driven bevel gear (8) meshing with a transmission bevel gear (6) is fixedly mounted on the outer side of the valve shaft (7); a stabilizing sleeve (9) is fixedly mounted on the bottom of the valve body (1); two connecting shafts (10) are fixedly mounted on the outer side of the valve shaft (7); a connecting plate (11) is fixedly mounted on the other end of the connecting shaft (10); Two limiting mechanisms (12) are installed inside the connecting plate (11); a mounting groove (13) is provided on the side of the connecting plate (11) away from the valve shaft (7); a connecting block (14) is movably installed on the inner side wall of the mounting groove (13); and a valve plate (15) is fixedly installed on the side of the connecting block (14) away from the valve shaft (7).

2. According to claim 1, a new type of three-eccentric all-metal hard-sealed bidirectional pressure butterfly valve is characterized in that: A mounting hole is provided on the left side of the connecting sleeve (2), a bearing is fixedly mounted on the inner side wall of the mounting hole, and the transmission rod (4) is fixedly mounted at the axis center of the bearing.

3. According to claim 1, a new type of three-eccentric all-metal hard-sealed bidirectional pressure butterfly valve is characterized in that: The outer side of the valve shaft (7) is tightly fitted to the penetration point between the valve shaft (7) and the valve body (1), and the bottom of the valve shaft (7) is rotatably connected to the inner side wall of the stabilizing sleeve (9).

4. According to claim 1, a new type of three-eccentric all-metal hard-sealed bidirectional pressure butterfly valve is characterized by: The two connecting shafts (10) are symmetrically fixedly mounted on the outside of the valve shaft (7).

5. According to claim 1, a new type of three-eccentric all-metal hard-sealed bidirectional pressure butterfly valve is characterized by: The mounting groove (13) is an annular mounting groove, and the connecting block (14) is an annular connecting block.

6. According to claim 1, a novel three-eccentric all-metal hard-sealed bidirectional pressure butterfly valve is characterized in that: The limiting mechanism (12) includes a fixing groove (121) provided inside the connecting plate (11), a supporting plate (122) being fixedly mounted on the inner side wall of the fixing groove (121), a limiting groove (123) being provided on the inner side wall of the connecting block (14), a sliding hole (124) communicating with the fixing groove (121) being provided on the side of the connecting plate (11) away from the valve shaft (7), a limiting rod (125) located in the limiting groove (123) being slidingly connected to the inner side of the supporting plate (122), a blocking plate (126) being fixedly mounted on the outer side of the limiting rod (125), and a return spring (127) sleeved on the outer side of the limiting rod (125) being fixedly mounted on the side of the blocking plate (126) close to the supporting plate (122).

7. A novel three-eccentric all-metal hard-sealed bidirectional pressure butterfly valve according to claim 6, characterized in that: The limiting rod (125) is an L-shaped limiting rod, and the L end of the limiting rod (125) is located in the sliding hole (124) for sliding connection.

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