A single flange centerline butterfly valve

Abstract

This invention relates to the field of casting molds, and more particularly to a single-flange centerline butterfly valve, comprising a valve body and a safety cover. A rotating shaft is rotatably connected to the valve body and extends outward from the valve body. A valve plate is fixedly connected to the outer wall of the rotating shaft. The valve plate is disposed on the inner wall of the valve body. A fixed cylinder is fixedly connected to the top of the valve body corresponding to the outer side of the rotating shaft. A telescopic cylinder is disposed on the inner wall of the fixed cylinder. An adjustment and limiting mechanism is disposed between the telescopic cylinder and the fixed cylinder. A safety anti-opening mechanism and a pop-out mechanism are disposed on the telescopic cylinder. The safety anti-opening mechanism includes a slot formed at the top of the telescopic cylinder, and telescopic grooves are connected to both sides of the inner wall of the slot. This invention can seal the adjusting disc to prevent unauthorized access and operation, thereby preventing the risk of illegal operation and reducing the need for external structures, preventing malicious damage and increasing safety.

Description

Technical Field

[0001] The invention relates to the field of casting moulds, in particular to a single flange centerline butterfly valve. Background Art

[0002] The single flange centerline butterfly valve, also known as the centerline flange butterfly valve or flange centerline butterfly valve, is a butterfly valve with a centerline sealing structure. Its characteristic is that the centerline of the butterfly plate seal is consistent with the centerline of the valve body and the centerline of the valve seat rotation. This valve is usually used in food, medicine, chemical, petroleum, electricity, textile, papermaking and other water supply and drainage, gas pipelines, as a device to regulate flow and cut off fluids.

[0003] At present, the regulating structure of the single flange centerline butterfly valve on the market is generally directly exposed to the outside during use, and lacks protection operation. Therefore, it can be touched and operated by any person, so it can be illegally operated by other people, and it is easy to be maliciously damaged by others, affecting its use, resulting in low safety;

[0004] In addition, in addition to the fully open and fully closed states, the valve plate will also be in a half-open state. At this time, the valve plate will open a certain angle to control the flow. Therefore, when the impact force generated by the fluid in the single-flange centerline butterfly valve acts on the valve plate tilted at a certain angle, it will produce uneven pressure distribution on both sides of the valve plate, thereby generating a torque that causes the valve plate to rotate automatically, thereby affecting the pre-set opening angle, resulting in situations that are inconsistent with expectations during actual use, thereby affecting the stability and efficiency of the entire fluid system. Summary of the invention

[0005] The purpose of the present invention is to solve the shortcomings of the background technology and to propose a single flange centerline butterfly valve.

[0006] In order to achieve the above purpose, the technical solution adopted by the present invention is: a single flange centerline butterfly valve, including a valve body and a safety cover, the valve body is rotatably connected with a rotating shaft and extends out of the valve body, the outer wall of the rotating shaft is fixedly connected with a valve plate, the valve plate is arranged on the inner wall of the valve body, the top of the valve body is fixedly connected with the outer side of the rotating shaft, the inner wall of the fixed cylinder is provided with a telescopic cylinder, an adjustment limit mechanism is provided between the telescopic cylinder and the fixed cylinder, and a safety anti-opening mechanism and a pop-up mechanism are provided on the telescopic cylinder;

[0007] The safety anti-opening mechanism includes a card slot provided at the top of the telescopic cylinder, the inner walls of the card slot are connected with telescopic slots on both sides, the inner walls of the two telescopic slots are fixedly connected with a second spring on one side away from each other, and the two second springs are fixedly connected with a limit column sliding on the inner wall of the telescopic slot on one end close to each other, and also includes a card block fixedly connected to the bottom end of the safety cover, the card block has limit slots at both ends, and the two limit columns are stuck in the limit slots and limit the card block;

[0008] The adjustment and limiting mechanism includes an adjustment disk fixedly connected to the top end of the rotating shaft, a positioning block fixedly connected to the outer wall of the adjustment disk, an arc plate fixedly connected to the inner wall of the telescopic cylinder, and a plurality of partition plates fixedly connected to the other end of the arc plate, wherein the distance between the plurality of partition plates is greater than the thickness of the positioning block, and the positioning block is clamped between the partition plates at different positions to adjust the flow of the control valve body.

[0009] Preferably, the safety anti-opening mechanism also includes two magnet blocks fixedly nested at one end of the limit column, and placement grooves symmetrically opened on the outer wall of the telescopic cylinder. The inner walls of the two placement grooves are used to place magnetic columns and have different magnetic properties from the magnet blocks and retract into the telescopic grooves with the limit column.

[0010] Preferably, the safety anti-opening mechanism also includes a fixed plate fixedly connected to the top of the outer wall of the telescopic cylinder, a telescopic plate symmetrically slides through the fixed plate, a rotating block is rotatably connected between the two telescopic plates, and the rotating block is fixedly connected to the safety cover.

[0011] Preferably, a connecting plate is fixedly connected to the bottom ends of the two telescopic plates, and a plurality of first springs are fixedly connected between the connecting plate and the fixed plate for resetting the connecting plate.

[0012] Preferably, the pop-up mechanism includes a pop-up groove opened at the top of the telescopic cylinder, and the number of the pop-up grooves is set to be multiple, and the bottom ends of the multiple pop-up grooves are fixedly connected to a third spring, and the top ends of the multiple third springs are fixedly connected to an ejection column that slides on the inner wall of the pop-up groove.

[0013] Preferably, the adjustment and limiting mechanism also includes an annular groove opened on the inner wall of the fixed cylinder, a plurality of evenly arranged guide columns are fixedly connected to the inner wall of the annular groove, a plurality of evenly arranged fourth springs are fixedly connected to the bottom end of the annular groove, a lifting ring is fixedly connected to the top of the plurality of fourth springs, and the lifting ring is fixedly connected to the telescopic cylinder.

[0014] Preferably, a plurality of circular holes are formed at the top of the lifting ring, a plurality of first spherical grooves are formed on the inner walls of the plurality of circular holes, a plurality of groups of second spherical grooves are provided on the inner walls of the plurality of groups, and a plurality of groups of the second balls are in contact with the outer wall of the guide column.

[0015] Preferably, a plurality of evenly arranged second spherical grooves are formed on the inner wall of the fixed cylinder corresponding to the top of the annular groove, a plurality of first balls are disposed on the inner walls of the second spherical grooves, and a plurality of the first balls are in contact with the outer wall of the telescopic cylinder.

[0016] Preferably, a gap is provided between the lifting ring and the annular groove, and a gap is provided between the fixing cylinder and the telescopic cylinder.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. Through the setting of the safety anti-opening mechanism, the adjusting disk can be blocked after adjusting the flow of the single flange centerline butterfly valve to prevent any person from touching and operating it, thereby preventing the hidden danger of illegal operation and reducing the setting of the external structure to prevent malicious damage and increase safety;

[0019] 2. Through the cooperation of the safety anti-opening mechanism and the ejection mechanism, when the limit of the safety cover is released, the safety cover can be quickly separated by the ejection column and the third spring to complete the disassembly operation, which is convenient and quick;

[0020] 3. By adjusting the setting of the limit mechanism, the valve plate can be limited after adjusting the flow of the single flange centerline butterfly valve to prevent the valve plate from automatically rotating during use, avoid affecting the preset opening angle, prevent the actual flow from being inconsistent with expectations, and thus prevent affecting the stability and efficiency of the entire fluid system;

[0021] 4. By setting the first ball and the second ball, the friction can be reduced in the process of the telescopic cylinder moving up and down, thereby preventing the occurrence of jamming, and making the telescopic cylinder move more smoothly, so the flow rate of the single flange centerline butterfly valve can be adjusted in time. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is an overall schematic diagram of a single flange centerline butterfly valve of the present invention;

[0023] Figure 2 It is an overall schematic diagram of a single flange centerline butterfly valve of the present invention from another perspective;

[0024] Figure 3 A single flange centerline butterfly valve according to the present invention Figure 2 Enlarged view of point A in the middle;

[0025] Figure 4 It is a cross-sectional view of a valve body of a single flange centerline butterfly valve of the present invention;

[0026] Figure 5 It is a partial structural schematic diagram of a single flange centerline butterfly valve of the present invention;

[0027] Figure 6 A single flange centerline butterfly valve according to the present invention Figure 5 Enlarged view of point B in the middle;

[0028] Figure 7 It is a cross-sectional view of the telescopic cylinder part of a single flange centerline butterfly valve of the present invention;

[0029] Figure 8 A single flange centerline butterfly valve according to the present invention Figure 7 Enlarged view of point C in the middle;

[0030] Fig. 9 It is a schematic diagram of the structure of a magnet block of a single flange centerline butterfly valve of the present invention;

[0031] Fig.10 It is a vertical cross-sectional view of the telescopic cylinder part of a single flange centerline butterfly valve of the present invention;

[0032] Fig.11 A single flange centerline butterfly valve according to the present invention Fig.10 Enlarged view of point D in the middle;

[0033] Fig.12 It is a bottom-up stereoscopic schematic diagram of a fixed cylinder of a single-flange centerline butterfly valve of the present invention;

[0034] Fig.13 It is a top perspective schematic diagram of a fixing cylinder of a single flange centerline butterfly valve of the present invention;

[0035] Fig.14 It is a vertical cross-sectional view of a fixing cylinder of a single flange centerline butterfly valve of the present invention;

[0036] Fig.15 A single flange centerline butterfly valve according to the present invention Fig.14 Enlarged view of point E in the middle.

[0037] In the figure: 1. valve body; 2. valve plate; 3. telescopic cylinder; 4. safety cover; 5. fixed cylinder; 6. connecting plate; 7. first spring; 8. fixed plate; 9. telescopic plate; 10. rotating block; 11. rotating shaft; 12. adjusting disk; 13. clamping block; 14. limiting groove; 15. partition plate; 16. ejector column; 17. arc plate; 18. positioning block; 19. clamping groove; 20. limiting column; 21. telescopic groove; 22. second spring; 23. placement groove; 24. magnet block; 25. ejection groove; 26. third spring; 27. annular groove; 28. fourth spring; 29. ​​lifting ring; 30. guide column; 31. first ball; 32. circular hole; 33. second ball. DETAILED DESCRIPTION

[0038] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0039] like Figure 1-Figure 15 A single flange centerline butterfly valve shown includes a valve body 1 and a safety cover 4. A rotating shaft 11 is rotatably connected to the valve body 1 and extends out of the outside of the valve body 1. A valve plate 2 is fixedly connected to the outer wall of the rotating shaft 11. The valve plate 2 is arranged on the inner wall of the valve body 1. A fixed cylinder 5 is fixedly connected to the outer side of the rotating shaft 11 at the top of the valve body 1. A telescopic cylinder 3 is arranged on the inner wall of the fixed cylinder 5. An adjusting limit mechanism is arranged between the telescopic cylinder 3 and the fixed cylinder 5. A safety anti-opening mechanism and a pop-up mechanism are arranged on the telescopic cylinder 3. The adjusting limit mechanism can limit and fix the angle of the valve plate 2 after adjusting the valve plate 2 to prevent the rotation angle of the valve plate 2 from changing during use and avoid affecting the flow rate of the fluid. The safety anti-opening mechanism can prevent non-operating personnel from contacting and illegally operating, thereby improving safety. The pop-up mechanism can quickly separate the safety cover 4 and the telescopic cylinder 3, thereby facilitating subsequent operation and processing.

[0040] like Figure 5-Figure 9 As shown, the safety anti-opening mechanism includes a card slot 19 provided at the top of the telescopic cylinder 3, and both sides of the inner wall of the card slot 19 are connected with telescopic slots 21, and the inner walls of the two telescopic slots 21 are fixedly connected to the side away from each other, and the two second springs 22 are fixedly connected to the end close to each other. The limiting column 20 that slides on the inner wall of the telescopic slot 21, a part of the inclined surface on the limiting column 20 is in the telescopic slot 21, which is convenient for the card block 13 to squeeze the limiting column 20, and also includes a card block 13 fixedly connected to the bottom end of the safety cover 4, and the limiting slots 14 are provided at both ends of the card block 13, and the two limiting columns 20 are both stuck in the limiting slot 14 and limit the card block 13;

[0041] like Figure 6 , Figure 7 As shown, the adjustment limit mechanism includes an adjustment disk 12 fixedly connected to the top of the rotating shaft 11, a positioning block 18 is fixedly connected to the outer wall of the adjustment disk 12, an arc plate 17 is fixedly connected to the inner wall of the telescopic cylinder 3, and a plurality of partition plates 15 are fixedly connected to the other end of the arc plate 17. The distance between the plurality of partition plates 15 is greater than the thickness of the positioning block 18, and the positioning block 18 is clamped between the partition plates 15 at different positions to adjust the flow of the control valve body 1.

[0042] like Figure 6 , Figure 8 , Fig. 9As shown, the safety anti-opening mechanism also includes two magnet blocks 24 fixedly nested at one end of the limiting column 20, and placement grooves 23 symmetrically opened on the outer wall of the telescopic cylinder 3. The inner walls of the two placement grooves 23 are used to place magnetic columns and have different magnetic properties from the magnet blocks 24 and bring the limiting column 20 into the telescopic groove 21. The placement grooves 23 and the telescopic groove 21 are close to each other, which facilitates the magnetic column and the magnet block 24 to attract each other and move with the magnet block 24.

[0043] like Figure 2 , Figure 3 As shown, the safety anti-opening mechanism also includes a fixed plate 8 fixedly connected to the top of the outer wall of the telescopic cylinder 3, and a telescopic plate 9 is symmetrically slidably penetrated on the fixed plate 8, and a rotating block 10 is rotatably connected between the two telescopic plates 9, and the rotating block 10 is fixedly connected to the safety cover 4. The safety cover 4 can be adjusted to a state parallel to the telescopic cylinder 3, which is convenient for the installation of the safety cover 4.

[0044] like Figure 3 As shown, the bottom ends of the two telescopic plates 9 are fixedly connected to the connecting plate 6, and a plurality of first springs 7 are fixedly connected between the connecting plate 6 and the fixed plate 8 for resetting the connecting plate 6. After installation, the elastic action of the first springs 7 can move the telescopic plate 9 downward.

[0045] like Fig.10 , Fig.11 As shown, the ejection mechanism includes an ejection slot 25 provided at the top of the telescopic cylinder 3, and the number of the ejection slots 25 is set to be multiple, and the bottom ends of the multiple ejection slots 25 are fixedly connected to the third springs 26, and the top ends of the multiple third springs 26 are fixedly connected to the ejection column 16 sliding on the inner wall of the ejection slot 25. When the safety cover 4 and the telescopic cylinder 3 are separated, the ejection column 16 can be moved upward by the elastic reset effect of the third spring 26, so that the safety cover 4 can be quickly ejected and the separation operation can be quickly completed.

[0046] like Fig.12 , Fig.13 , Fig.14 As shown, the adjustment and limiting mechanism also includes an annular groove 27 formed on the inner wall of the fixed cylinder 5, a plurality of evenly arranged guide posts 30 are fixedly connected to the inner wall of the annular groove 27, a plurality of evenly arranged fourth springs 28 are fixedly connected to the bottom end of the annular groove 27, a lifting ring 29 is fixedly connected to the top end of the plurality of fourth springs 28, and the lifting ring 29 is fixedly connected to the telescopic cylinder 3. The lifting ring 29 can be limited by the guide post 30 to prevent the lifting ring 29 from deflecting during use and affecting stability.

[0047] like Fig.14 , Fig.15As shown, a plurality of circular holes 32 are formed on the top of the lifting ring 29, and a plurality of first spherical grooves are formed on the inner walls of the plurality of circular holes 32. Second balls 33 are disposed on the inner walls of the plurality of groups of first spherical grooves, and the plurality of groups of second balls 33 are in contact with the outer wall of the guide column 30. The second balls 33 roll in the first spherical grooves, and the second balls 33 are in contact with the guide column 30, so that jamming can be prevented when moving up and down.

[0048] like Fig.13 , Fig.14 As shown, a plurality of evenly arranged second spherical grooves are provided at the top of the inner wall of the fixed cylinder 5 corresponding to the annular groove 27, and a first ball 31 is provided on the inner wall of each of the plurality of second spherical grooves, and each of the plurality of first balls 31 is in contact with the outer wall of the telescopic cylinder 3. The first balls 31 roll in the second spherical grooves and the first balls 31 are in contact with the outer wall of the telescopic cylinder 3, thereby preventing the telescopic cylinder 3 from getting stuck when moving up and down, and making the up and down movement smoother.

[0049] like Fig.10 , Fig.12 As shown, a gap is provided between the lifting ring 29 and the annular groove 27, and a gap is provided between the fixed cylinder 5 and the telescopic cylinder 3. The provided gap avoids contact of redundant areas, thereby preventing unnecessary jamming during up and down movement.

[0050] Working principle: first, press the telescopic cylinder 3 downward and move the arc plate 17 and the partition plate 15 downward, so that the positioning block 18 leaves the range of the partition plate 15 and releases the limit on the adjusting disk 12. At this time, rotate the adjusting disk 12 and rotate the rotating shaft 11 and the valve plate 2, so that the angle of the valve plate 2 can be adjusted. At this time, the lifting ring 29 can be moved upward under the elastic action of the fourth spring 28, thereby moving the telescopic cylinder 3 upward. When the telescopic cylinder 3 moves up and down, the first ball 31 and the second ball 33 can prevent the up and down movement from being stuck. When the lifting ring 29 contacts the top of the annular groove 27, the telescopic cylinder 3 is fully extended and retracted. At this time, the positioning block 18 will be stuck between the partition plates 15 at the corresponding positions, so that the adjusting disk 12 can be limited. Therefore, the impact force of the fluid in the valve plate 2 during use can be avoided from acting on the valve plate 2 to cause it to rotate, thereby preventing the angle of the valve plate 2 from changing and avoiding affecting the stability of the fluid system.

[0051] Further, the safety cover 4 is turned over to make it parallel to the telescopic cylinder 3, and the block 13 is aligned with the slot 19. Then the safety cover 4 is moved downward and the block 13 is inserted into the slot 19. At the same time, the ejection column 16 is squeezed to shrink it into the ejection slot 25 and the third spring 26 is squeezed. When the block 13 is inserted into the slot 19, since the limiting columns 20 are close to each other and have inclined surfaces at one end, when the block 13 contacts the inclined surface, the limiting columns 20 are squeezed and shrink into the telescopic slot 21. When the telescopic cylinder 3 and the safety cover 4 are completely in contact, the block 13 is installed in place. At this time, the limiting column 20 is clamped into the limiting slot 14 under the elastic reset action of the second spring 22, completing the limiting of the block 13 and completing the limiting fixation of the safety cover 4, thereby preventing illegal personnel from contacting and operating the adjusting disk 12, thereby improving safety.

[0052] Furthermore, when the angle of the valve plate 2 needs to be adjusted, the magnetic column is inserted into the placement groove 23. Since the magnetic column and the magnet block 24 have different magnetic properties and can be attracted to each other, the limiting column 20 can be moved away from the block 13 to leave the range of the limiting groove 14. At this time, the safety cover 4 can be quickly separated under the elastic reset action of the third spring 26, and then contact the limit of the adjustment disk 12, so that the angle of the valve plate 2 can be adjusted.

[0053] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention. These changes and improvements fall within the scope of the present invention. The scope of protection claimed by the present invention is defined by the attached claims and their equivalents.

Claims

1. A single flange centerline butterfly valve, comprising a valve body (1) and a safety cover (4), wherein a rotating shaft (11) is rotatably connected to the valve body (1) and extends out of the valve body (1), a valve plate (2) is fixedly connected to the outer wall of the rotating shaft (11), and the valve plate (2) is arranged on the inner wall of the valve body (1), characterized in that: A fixed cylinder (5) is fixedly connected to the outer side of the rotating shaft (11) at the top end of the valve body (1), a telescopic cylinder (3) is arranged on the inner wall of the fixed cylinder (5), an adjustment limit mechanism is arranged between the telescopic cylinder (3) and the fixed cylinder (5), and a safety anti-opening mechanism and a pop-up mechanism are arranged on the telescopic cylinder (3); The safety anti-opening mechanism comprises a slot (19) provided at the top end of the telescopic cylinder (3), the inner walls of the slot (19) are both connected with telescopic slots (21), the inner walls of the two telescopic slots (21) are both fixedly connected with a second spring (22) on the side away from each other, the two second springs (22) are both fixedly connected with a limit column (20) sliding on the inner wall of the telescopic slot (21) on the side close to each other, and also comprises a block (13) fixedly connected to the bottom end of the safety cover (4), the two ends of the block (13) are both provided with limit slots (14), the two limit columns (20) are both stuck in the limit slots (14) and limit the block (13); The regulating and limiting mechanism comprises an regulating disk (12) fixedly connected to the top end of the rotating shaft (11); a positioning block (18) is fixedly connected to the outer wall of the regulating disk (12); an arc-shaped plate (17) is fixedly connected to the inner wall of the telescopic cylinder (3); a plurality of partition plates (15) are fixedly connected to the other end of the arc-shaped plate (17); the distance between the plurality of partition plates (15) is greater than the thickness of the positioning block (18); the positioning block (18) is clamped between the partition plates (15) at different positions to regulate the flow of the control valve body (1); The safety anti-opening mechanism also includes two magnet blocks (24) fixedly embedded in one end of the limiting column (20), and placement grooves (23) symmetrically arranged on the outer wall of the telescopic cylinder (3), wherein the inner walls of the two placement grooves (23) are used to place magnetic columns which have different magnetic properties from the magnet blocks (24) and are contracted into the telescopic grooves (21) with the limiting column (20); The safety anti-opening mechanism also includes a fixed plate (8) fixedly connected to the top of the outer wall of the telescopic cylinder (3), a telescopic plate (9) symmetrically slidingly passing through the fixed plate (8), a rotating block (10) rotatably connected between the two telescopic plates (9), and the rotating block (10) is fixedly connected to the safety cover (4); The bottom ends of the two telescopic plates (9) are fixedly connected to a connecting plate (6), and a plurality of first springs (7) are fixedly connected between the connecting plate (6) and the fixed plate (8) for resetting the connecting plate (6); The ejection mechanism comprises an ejection slot (25) provided at the top end of the telescopic cylinder (3), wherein the ejection slot (25) is provided in a plurality, the bottom ends of the plurality of ejection slots (25) are all fixedly connected to a third spring (26), and the top ends of the plurality of third springs (26) are all fixedly connected to an ejection column (16) that slides on the inner wall of the ejection slot (25).

2. A single flange centerline butterfly valve according to claim 1, characterized in that: The regulating and limiting mechanism further comprises an annular groove (27) formed on the inner wall of the fixed cylinder (5); a plurality of evenly arranged guide posts (30) are fixedly connected to the inner wall of the annular groove (27); a plurality of evenly arranged fourth springs (28) are fixedly connected to the bottom end of the annular groove (27); a lifting ring (29) is fixedly connected to the top end of the plurality of fourth springs (28); and the lifting ring (29) is fixedly connected to the telescopic cylinder (3).

3. A single flange centerline butterfly valve according to claim 2, characterized in that: A plurality of circular holes (32) are formed at the top of the lifting ring (29), a plurality of first spherical grooves are formed on the inner walls of the plurality of circular holes (32), a plurality of second balls (33) are formed on the inner walls of the plurality of groups of the first spherical grooves, and a plurality of groups of the second balls (33) are in contact with the outer wall of the guide column (30).

4. A single flange centerline butterfly valve according to claim 3, characterized in that: A plurality of evenly arranged second spherical grooves are provided on the inner wall of the fixed cylinder (5) at the top end of the annular groove (27), and a first rolling ball (31) is provided on the inner walls of the plurality of second spherical grooves. The plurality of first rolling balls (31) are in contact with the outer wall of the telescopic cylinder (3).

5. A single flange centerline butterfly valve according to claim 2, characterized in that; A gap is provided between the lifting ring (29) and the annular groove (27), and a gap is provided between the fixed cylinder (5) and the telescopic cylinder (3).

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