Single-blade regulating valve

Abstract

The utility model discloses a single-blade regulating valve, which relates to the technical field of valve equipment and comprises a valve body, a valve plate blade, a valve shaft, a shaft sleeve, a square tenon and a clamping groove. The valve shaft and the valve plate blade are connected and fixed through the square tenon and the clamping groove, the sealing lining is installed between the valve shaft and the shaft sleeve and penetrates through the valve body, the L-shaped sealing filler is installed outside the sealing lining, and no bolt is arranged in the internal structure of the valve. Due to the structure of the upper and lower L-shaped sealing fillers, axial floating of the valve plate blades is effectively avoided; due to the bolt-free design, the replacement requirement caused by bolt corrosion is reduced, potential fault points are reduced, and the service life of the valve is prolonged; due to the bolt-free design, a corrosion source is reduced, the safety of the valve is enhanced, the replacement and maintenance cost caused by corrosion is reduced, and the total cost is reduced; bolt-free single-blade design reduces obstruction of an internal structure to fluid flowing, and ventilation efficiency of the valve is guaranteed.

Description

TECHNICAL FIELD

[0001] The utility model relates to valve equipment technical field, concretely is a single leaf regulating valve. BACKGROUND

[0002] Regulating valve is widely used in petroleum, chemical industry, metallurgy, medicine, electric power, water conservancy, pump station and other industries, and the flow of liquid or gas medium through the regulating valve is adjusted by adjusting the opening of the valve. The flow medium of the regulating valve usually contains corrosive medium such as acid and alkali, and toxic, harmful and volatile gas or liquid, so the sealing property and corrosion resistance of the regulating valve are particularly important, but the valve often fails to seal in corrosive environment.

[0003] The patent (CN219140021U) discloses a regulating valve, which comprises a regulating valve body, a regulating valve rod, a regulating valve plate, a valve rod holder and an opening disc. The regulating valve body comprises a cylindrical main body. The regulating valve rod is inserted into the cylindrical main body from the outer side of the side wall of the cylindrical main body. The regulating valve plate is located in the cylindrical main body and is fixed on the regulating valve rod. The valve rod holder is located on the outer side of the cylindrical main body and is sleeved on the periphery of the regulating valve rod. The opening disc is located on the surface of the valve rod holder away from the cylindrical main body and is sleeved on the periphery of the regulating valve rod. The surface of the opening disc away from the regulating valve rod has a plurality of scales starting from zero scale. The opening pointer is located on the surface of the opening disc away from the valve rod holder, is sleeved on the surface of the regulating valve rod, and rotates with the regulating valve rod. When the opening pointer points to zero scale, the regulating valve plate is parallel to the port of the cylindrical main body. The regulating valve can indicate the opening and accurately monitor and adjust the opening of the regulating valve.

[0004] In the traditional regulating valve, the valve body usually contains fasteners such as bolts. These fasteners are easily corroded in a corrosive medium environment. Even if PTFE bolts are used, their weak fastening force will gradually reduce the sealing property and durability of the valve when fixing a large-diameter valve leaf. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a single leaf regulating valve to solve the problems in the above background technology.

[0006] To solve the above technical problems, the utility model provides technical schemes as follows: A single -leaf governing valve, including valve body, valve plate blade and valve shaft, the valve plate blade top and bottom symmetry are equipped with the shaft sleeve matched with valve shaft, the valve plate blade inside is inserted with square tenon, square tenon both ends are located two shaft sleeve inboard respectively, valve shaft outer wall one end is equipped with the clamping groove matched with square tenon, the sealing bushing of valve shaft and shaft sleeve is equipped with, sealing bushing extends to valve body outside, valve shaft outer wall is equipped with sealing packing on sealing bushing outside, the valve body outer wall is equipped with the base on valve shaft outside, the base outer wall is equipped with drive mechanism, drive mechanism output and valve shaft transmission connection.

[0007] Further, the drive mechanism is one of a worm gear actuator, an electric actuator or a manual actuator.

[0008] Further, the drive mechanism includes a cylinder, an L-shaped push rod, a first rack and a gear, the gear is sleeved on the outer wall of the valve shaft, the first rack is engaged with the gear, the L-shaped push rod is fixedly connected with the output end of the cylinder, the first rack is parallel to the cylinder, and the first rack is fixedly connected with the L-shaped push rod.

[0009] Further, the top of the valve shaft is provided with a locking mechanism, the locking mechanism includes a limiting column and a lifting adjusting assembly, the output end of the lifting adjusting assembly is fixedly connected with the outer wall of the limiting column, the top of the valve shaft is provided with a limiting groove matched with the limiting column, and the top of the valve shaft is provided with a movable groove above the limiting groove; the inner tangent diameter of the movable groove is greater than the inner tangent diameter of the limiting groove.

[0010] Further, the lifting adjusting assembly includes a spring, a second rack and a plurality of clamping teeth, the spring is arranged at the top of the limiting column, the second rack and the clamping teeth are engaged with each other, the clamping teeth are fixedly connected with the outer wall of the limiting column, the second rack is parallel to the first rack, and the tooth grooves of the second rack and the first rack are perpendicular to each other, and the cylinder and the spring are arranged in the inner side of the base.

[0011] Further, one side of the inner wall of the valve body is provided with a first blade stopper matched with the valve plate blade, the other side of the inner wall of the valve body is provided with a second blade stopper matched with the valve plate blade, and the outer wall of the valve plate blade is provided with a reinforcing rib.

[0012] Further, the surfaces of the valve body, the valve plate blade, the valve shaft and the shaft sleeve are provided with a corrosion-resistant coating.

[0013] Compared with the prior art, the utility model achieves the following beneficial effects:

[0014] 1. The utility model discloses a valve body, valve plate blade, valve shaft, shaft sleeve, square tenon, clamping groove are set up, and the valve shaft adopts square tenon and clamping groove connection fixed with valve plate blade, and installs the sealing bushing between the valve shaft and the shaft sleeve, and the sealing bushing passes through the valve body, and installs the L type sealing filler outside, and the internal structure of the valve has no bolt, simultaneously, the structure of sealing filler guarantees that the valve has no external leakage, improves the corrosion resistance of coating valve, and sealing bushing protects the dead angle of spraying, and improves the corrosion resistance of spare part, and the structure of upper and lower L type sealing filler effectively avoids the axial wandering of valve plate blade, and the boltless design reduces the replacement demand caused by bolt corrosion, reduces the potential trouble point, prolongs the service life of valve, because the boltless design reduces the corrosion source, this helps to enhance the safety of valve, and reduces the replacement and maintenance cost caused by corrosion, thereby reducing the total cost, and the boltless single leaf design reduces the obstruction of internal structure to fluid flow, guarantees the ventilation efficiency of valve.

[0015] 2. The utility model discloses a cylinder, L type push rod, first rack, gear, locking mechanism, limiting post and lifting adjusting assembly are set up, the driving mechanism in this embodiment adopts the design, and the cylinder provides power, and the cylinder telescopic motion drives L type push rod to carry out reciprocating translation motion, and first rack carries out reciprocating translation motion along with L type push rod, and first rack reciprocating translation motion drives gear to carry out reciprocating rotation motion, and valve shaft carries out rotation motion along with gear, and valve shaft drives valve plate blade to carry out rotation motion, convenient and fast operation, locking mechanism carries out locking processing to valve shaft, avoids accidental displacement variation of valve shaft after adjusting. ACCURATE DRAWINGS

[0016] The accompanying drawings are included to provide a further understanding of the utility model and are incorporated in and constitute a part of the specification, illustrate the utility model and are used to explain the utility model, and do not constitute the limitation to the utility model. In the drawings:

[0017] Figure 1 It is the structure schematic diagram of the whole utility model;

[0018] Figure 2 It is the front view cross section of the whole utility model;

[0019] Figure 3 It is the utility model Figure 2 The enlarged schematic view of A place in the utility model;

[0020] Figure 4 It is the structure schematic diagram of the driving mechanism of the utility model;

[0021] Figure 5 It is the front view cross section of valve shaft in the utility model Figure 4 ;

[0022] In the figure: 1, valve body; 101, first blade stop; 2, valve plate blade; 201, reinforcing rib; 3, valve shaft; 301, locking mechanism; 3011, limiting column; 3012, spring; 3013, lifting adjusting assembly; 3014, second rack; 3015, clamping tooth; 302, limiting groove; 303, movable groove; 4, shaft sleeve; 5, square tenon; 6, clamping groove; 7, sealing bushing; 8, sealing packing; 9, base; 10, driving mechanism; 1001, air cylinder; 1002, L-shaped push rod; 1003, first rack; 1004, gear. DETAILED DESCRIPTION

[0023] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0024] Please refer to Figures 1-3 The utility model provides technical scheme: a single leaf regulating valve, including valve body 1, valve plate blade 2 and valve shaft 3, the inside of valve plate blade 2 is inserted with square tenon 5, and the both ends of square tenon 5 are located respectively inside two shaft sleeves 4, one end of the outer wall of valve shaft 3 is equipped with the clamping groove 6 matched with square tenon 5, the sealing bushing 7 is sleeved between valve shaft 3 and shaft sleeve 4, the sealing bushing 7 extends to the outside of valve body 1, the outer wall of valve shaft 3 is equipped with sealing packing 8 outside sealing bushing 7, the outer wall of valve body 1 is equipped with base 9 outside valve shaft 3, the outer wall of base 9 is equipped with driving mechanism 10, and the output end of driving mechanism 10 is connected with valve shaft 3 in transmission.

[0025] In an embodiment, the driving mechanism 10 is one of worm gear and worm executor, electric executor or manual executor, which is rotated to drive the valve shaft 3 to rotate, so as to realize the rotating movement of the valve plate blade 2.

[0026] In an embodiment, the inner wall of the valve body 1 is provided with a first blade stop 101 matched with the valve plate blade 2, and the inner wall of the valve body 1 is provided with a second blade stop matched with the valve plate blade 2, the first blade stop 101 and the second blade stop are used in cooperation to seal the space between the two sides of the valve plate blade 2 and the inner wall of the valve body 1, so as to effectively ensure the sealing effect of the valve body 1; the outer wall of the valve plate blade 2 is provided with a reinforcing rib 201, which reinforces and supports the valve plate blade 2, so as to effectively improve the structural stability of the valve plate blade 2.

[0027] In one embodiment, the valve body 1, valve plate blade 2, valve shaft 3 and shaft sleeve 4 surface are provided with corrosion-resistant coating, corrosion-resistant coating can adopt ETFE anti-corrosion coating, improve the corrosion resistance of the valve.

[0028] The working principle of the utility model:

[0029] Referring to the description of the drawings Figures 1-3 , the utility model discloses a valve body 1, valve plate blade 2, valve shaft 3, shaft sleeve 4, square tenon 5, clamping groove 6, valve shaft 3 and valve plate blade 2 adopt square tenon 5 and clamping groove 6 connection fixed, install sealing bushing 7 between valve shaft 3 and shaft sleeve 4, sealing bushing 7 passes through valve body 1, installs L type sealing packing outside, and the internal structure of valve has no bolt, simultaneously, the structure of sealing packing guarantees that valve has no external leakage, improves the corrosion resistance of coating valve, and sealing bushing 7 protects the dead angle of spraying, and improves the corrosion resistance of spare part, and the structure of upper and lower L-shaped sealing packing effectively avoids the axial migration of valve plate blade 2, and the boltless design reduces the replacement demand due to bolt corrosion, reduces potential fault point, prolongs the service life of valve, since the boltless design reduces the corrosion source, this helps to enhance the safety of valve, and reduces the replacement and maintenance cost due to corrosion, thereby reducing total cost, and the boltless single-leaf design reduces the obstruction of internal structure to fluid flow, guarantees the ventilation efficiency of valve, and the structure valve has simple structure, no external leakage, high coating quality, corrosion resistance and the like, the valve body 1 is opened, and the shaft sleeve 4 and base 9 with reinforcing rib are welded outside valve body 1, the stability of reinforced structure is enhanced, and additional support is provided for valve, valve shaft 3 and valve plate blade 2 adopt the fixing of square tenon 5 and clamping groove 6 connection mode, and the connection mode is simple and firm, and the stability and reliability of valve in the operation process are ensured, the structure of clamping shaft sleeve 4 is arranged on valve plate blade 2, valve plate blade 2 and shaft sleeve 4 are welded, after fluorine rubber O ring and sealing bushing 7 are placed on valve shaft 3, pass through shaft sleeve 4 and clamp valve plate blade 2, and the design ensures the fixation of valve plate blade 2 on valve shaft 3, and simultaneously allows valve shaft 3 to rotate flexibly in operation, and the welding piece is sprayed with ETFE anti-corrosion coating before installation.

[0030] Please refer to Figures 4-5The utility model provides technical scheme: drive mechanism 10 includes cylinder 1001, L type push rod 1002, first rack 1003 and gear 1004, gear 1004 is set on the outer wall of valve shaft 3, first rack 1003 and gear 1004 are mutually engaged, L type push rod 1002 is fixedly connected with the output end of cylinder 1001, first rack 1003 and cylinder 1001 are mutually parallel, first rack 1003 is fixedly connected with L type push rod 1002, the top of valve shaft 3 is equipped with locking mechanism 301, locking mechanism 301 includes spacing column 3011, lifting adjustment subassembly 3013, lifting adjustment subassembly 3013 output and spacing column 3011 outer wall fixed connection, the top of valve shaft 3 is equipped with the spacing groove 302 of matching with spacing column 3011, the top of valve shaft 3 is equipped with movable groove 303 above spacing groove 302, the diameter of the inscribed circle of movable groove 303 is greater than the diameter of the inscribed circle of spacing groove 302.

[0031] In one embodiment, the lifting adjusting assembly 3013 comprises a spring 3012, a second rack 3014 and a plurality of catches 3015, the spring 3012 is arranged at the top of the limiting column 3011, the second rack 3014 and the catch 3015 are engaged with each other, the catch 3015 is fixedly connected with the outer wall of the limiting column 3011, the second rack 3014 is parallel to the first rack 1003, and the tooth grooves of the second rack 3014 and the first rack 1003 are perpendicular to each other, the air cylinder 1001 and the spring 3012 are arranged inside the base 9, the lifting adjusting assembly can adopt the structural design in the embodiment, the spring 3012 elastically supports the limiting column 3011 at the top of the limiting column 3011, the spring 3012 elastically supports the catch through the limiting column 3011, the second rack 3014 can move synchronously with the first rack 1003, in the process that the first rack 1003 is driven by the L-shaped push rod 1002 to move in translation, the first rack 1003 drives the gear 1004 to move in rotation, at the same time, the second rack 3014 is engaged with the catch 3015, with the movement of the second rack 3014, the teeth of the second rack 3014 and the catch 3015 are constantly interlaced, so that the catch 3015 constantly moves up and down, the up-and-down movement of the catch 3015 drives the limiting column 3011 to move up and down, the limiting column 3011 moves inside the limiting groove 302 and the movable groove 303 in the process of moving up and down, when the limiting column 3011 moves into the limiting groove 302, the position between the limiting column 3011 and the valve shaft 3 is locked, when the limiting column 3011 moves into the movable groove 303, the limiting column 3011 and the valve shaft 3 are unlocked, the limiting column 3011 and the valve shaft 3 move relatively in rotation; when the air cylinder 1001 stops the expansion and contraction movement, the first rack 1003 and the second rack 3014 no longer move in translation, the catch 3015 moves downward under the pushing of the spring 3012, the catch 3015 is clamped inside the tooth groove of the second rack 3014, the limiting column 3011 moves from the movable groove 303 to the limiting groove 302, and locks the limiting column 3011 and the valve shaft 3, which can effectively avoid the rotation of the valve shaft 3, and further prevent the valve plate blade 2 from moving under the impact of liquid or gas inside the valve body 1;

[0032] When the cylinder 1001 is actively extended and retracted, the translational force is directly applied to the first rack 1003 and the second rack 3014, the second rack 3014 is supported by the translational force, at this time, the clamping tooth 3015 abuts against the second rack 3014, the translational force is transmitted between the teeth of the second rack 3014 and the teeth of the clamping tooth 3015, the clamping tooth 3015 is slowly moved upward under the force, the clamping tooth 3015 drives the limiting column 3011 to slowly move upward, until the limiting column 3011 moves out of the limiting groove 302 and enters the inside of the movable groove 303, the cylinder 1001 continues to extend and retract to drive the valve plate blade 2 to open and close, so that the cylinder 1001 can normally drive the valve plate blade 2 to open and close; after the position of the valve plate blade 2 is adjusted and locked, the valve plate blade 2 is subjected to a rotating force, the rotating force is transmitted to the surface of the valve shaft 3, the rotating force on the surface of the valve shaft 3 is transmitted to the limiting column 3011, the rotating force on the limiting column 3011 is transmitted to the clamping tooth 3015, the clamping tooth 3015 is subjected to the rotating force, and the rotating force on the surface of the clamping tooth 3015 is transmitted to the inside of the tooth groove of the second rack 3014; since the rotating force is different from the translational force, under the support of the translational force, the contact position between the second rack 3014 and the clamping tooth 3015 is subjected to a force in the same direction, so that the clamping tooth 3015 can be upwardly pushed, but under the support of the rotating force, the contact position between the second rack 3014 and the clamping tooth 3015 is subjected to a force in different directions, which are counteracted, so that the clamping tooth 3015 cannot move upward, and the valve plate blade 2 cannot rotate.

[0033] The working principle of the utility model is as follows:

[0034] Referring to the drawings in the specification Figures 4-5 , the utility model discloses a cylinder 1001, L type push rod 1002, first rack 1003, gear 1004, locking mechanism 301, limiting column 3011 and lifting adjustment assembly 3013 are provided, the driving mechanism 10 in the embodiment adopts the design, the cylinder 1001 provides power, the cylinder 1001 retraction movement drives L type push rod 1002 to carry out reciprocating translational motion, first rack 1003 follows L type push rod 1002 and carries out reciprocating translational motion, first rack 1003 reciprocating translational motion drives gear 1004 to carry out reciprocating rotation, valve shaft 3 follows gear 1004 and carries out rotation, valve shaft 3 drives valve plate blade 2 to carry out rotation, convenient and fast operation, locking mechanism 301 carries out locking treatment to valve shaft 3, avoids accidental displacement variation of valve shaft 3 under external force after adjustment;

[0035] The limiting column 3011 in the locking mechanism 301 is driven by the lifting adjusting assembly 3013 to move up and down, so that the limiting column 3011 can move up and down inside the limiting groove 302 and the movable groove 303 on the top of the valve shaft 3; when the limiting column 3011 enters inside the limiting groove 302, the limiting column 3011 limits and locks the valve shaft 3, and the valve shaft 3 cannot rotate; when the limiting column 3011 moves out of the limiting groove 302 and enters inside the movable groove 303, the locking state between the limiting column 3011 and the valve shaft 3 is released, and the valve shaft 3 can normally rotate and adjust.

[0036] Finally, it should be noted that: the above only for the preferred embodiments of the present application, and is not intended to limit the present application, although the foregoing detailed description of the present application is made with reference to the foregoing embodiments, for those skilled in the art, it still can be modified, or part of the technical features of the equivalent replacement. Any modification, equivalent replacement, improvement, etc. made within the spirit and principles of the present application shall be included within the scope of the present application.

Claims

1. A single leaf regulating valve comprising a valve body (1), a valve plate leaf (2) and a valve shaft (3), characterized in that: The valve plate blade (2) is provided with a shaft sleeve (4) matched with the valve shaft (3) at the top and bottom, a square tenon (5) is inserted into the valve plate blade (2), the two ends of the square tenon (5) are located at the inner side of the two shaft sleeves (4) respectively, one end of the outer wall of the valve shaft (3) is provided with a clamping groove (6) matched with the square tenon (5), a sealing bushing (7) is sleeved between the valve shaft (3) and the shaft sleeve (4), the sealing bushing (7) extends to the outer side of the valve body (1), the outer wall of the valve shaft (3) is provided with a sealing packing (8) outside the sealing bushing (7), the outer wall of the valve body (1) is provided with a base (9) outside the valve shaft (3), the outer wall of the base (9) is provided with a driving mechanism (10), and the output end of the driving mechanism (10) is in transmission connection with the valve shaft (3).

2. A single leaf regulating valve according to claim 1, characterised in that: The driving mechanism (10) is one of a worm gear actuator, an electric actuator or a manual actuator.

3. A single leaf control valve according to claim 1 wherein: The driving mechanism (10) comprises a gas cylinder (1001), an L-shaped push rod (1002), a first rack (1003) and a gear (1004), the gear (1004) is sleeved on the outer wall of the valve shaft (3), the first rack (1003) is in meshing with the gear (1004), the L-shaped push rod (1002) is fixedly connected with the output end of the gas cylinder (1001), the first rack (1003) is parallel to the gas cylinder (1001), and the first rack (1003) is fixedly connected with the L-shaped push rod (1002).

4. A single leaf control valve according to claim 3 wherein: The top of the valve shaft (3) is provided with a locking mechanism (301), the locking mechanism (301) comprises a limiting column (3011) and a lifting adjusting assembly (3013), the output end of the lifting adjusting assembly (3013) is fixedly connected with the outer wall of the limiting column (3011), the top of the valve shaft (3) is provided with a limiting groove (302) matched with the limiting column (3011), and the top of the valve shaft (3) is provided with a movable groove (303) above the limiting groove (302); the inner tangent diameter of the movable groove (303) is greater than the inner tangent diameter of the limiting groove (302).

5. A single leaf control valve according to claim 4 wherein: The lifting adjusting assembly (3013) comprises a spring (3012), a second rack (3014) and a plurality of clamping teeth (3015), the spring (3012) is arranged at the top of the limiting column (3011), the second rack (3014) and the clamping teeth (3015) are in meshing, the clamping teeth (3015) are fixedly connected with the outer wall of the limiting column (3011), the second rack (3014) is parallel to the first rack (1003), the tooth grooves of the second rack (3014) and the first rack (1003) are perpendicular to each other in opening direction, and the gas cylinder (1001) and the spring (3012) are arranged inside the base (9).

6. A single leaf control valve according to claim 1 wherein: One side of the inner wall of the valve body (1) is provided with a first blade blocking strip (101) matched with the valve plate blade (2), the other side of the inner wall of the valve body (1) is provided with a second blade blocking strip matched with the valve plate blade (2), and the outer wall of the valve plate blade (2) is provided with a reinforcing rib (201).

7. A single leaf control valve as claimed in claim 1, wherein: The valve body (1), valve plate blade (2), valve shaft (3) and shaft sleeve (4) surfaces are provided with corrosion-resistant coating.

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