Manual pneumatic angle seat valve

Abstract

The utility model discloses a manual pneumatic angle seat valve, including valve body, pneumatic head, handle operating mechanism, valve stem, valve core and valve seat, the both ends of valve body are equipped with the import channel and export channel of intercommunication, pneumatic head installs on the upper end of valve body, and the valve stem sets up in the valve body, and pneumatic head and handle operating mechanism all are connected with valve stem for driving the lift of valve stem, and the valve core installs in the inner end of valve stem, and the valve seat is inclined and is arranged in the inner end of import channel, and the axis of valve stem is perpendicular with valve seat end face, and when the valve core is opposite with valve seat, will import channel with export channel cut off, the valve core includes valve core main part and sealing washer, and one end of valve core main part is connected with valve stem, and sealing washer installs in the other end of valve core main part, and the inside of sealing washer is equipped with reinforcing plate, and reinforcing plate is locked and is connected with valve core main part through at least two groups of locking assembly. The utility model discloses sealing washer mounting structure stable and reliable, high strength, deformation, long service life, can guarantee the good sealing property when the valve is closed.

Description

Technical Field

[0001] This utility model relates to the field of valve technology, and in particular to a manual valve with a pneumatic angle seat. Background Technology

[0002] Pneumatic angle seat valves are widely used in automatic fluid control or regulation in industries such as natural gas, oil, chemical, metallurgy, papermaking, power generation, mining, printing and dyeing, biopharmaceutical, daily chemical, food and beverage, water treatment and air treatment due to their advantages such as maintaining flow rate, saving space, sensitive response, accurate action, ultra-long service life, large flow, and low flow resistance. They are also used in conjunction with automated start-up instruments.

[0003] Utility model patent application number CN202120434444.1 discloses a pneumatic angle seat valve with manual control, which includes, in sequence, a control tube, a handle, a locking nut, a push tube, a screw, a bushing, a cylinder, a spring, a locking nut, a piston, an end cap, a connecting part, a valve body, a valve core, a valve core sealing gasket, a self-locking nut, a first air inlet, a first air control chamber, a second air control chamber, a second air inlet, a muffler, a valve stem, an inlet end, and an outlet end. The cylinder has an external cylinder body, an end cap at the lower part of the cylinder body, and an upper part of the cylinder body connected to the push tube. A piston is located inside the cylinder body. The piston is located inside the cylinder, dividing the cylinder into two independent pneumatic control chambers. The upper part is the second pneumatic control chamber, with a second air inlet on the side that communicates with the outside and is connected to a muffler. The lower part is the first pneumatic control chamber, with a first air inlet on the side that communicates with the outside. A valve stem is located inside the piston, with its upper part connected to a locking nut. A spring is located on the upper part of the piston. The valve body has a connecting part at the top that connects to the end cover and a valve body at the bottom that connects to the connecting part. A valve core connected to the valve stem is located in the middle of the valve body, and a valve core sealing gasket is located inside the valve core. A self-locking nut is located at the bottom.

[0004] In actual use, the valve core gasket is locked and stressed near the inner circle, while the outer circle is only stressed during sealing. After frequent use, the outer circle of the valve core gasket is prone to warping and deformation, leading to leakage. How to improve the reliability of the valve core gasket structure is an urgent problem to be solved in the market. Utility Model Content

[0005] The purpose of this utility model is to provide a manual angle seat valve with pneumatic support. The sealing gasket installation structure of this utility model is stable and reliable, with high strength, not easy to deform, and long service life, which can ensure good sealing performance when the valve is closed.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a manual pneumatic angle seat valve, comprising a valve body, a pneumatic head, a handle operating mechanism, a valve stem, a valve core, and a valve seat. The valve body has an inlet channel and an outlet channel that communicate with each other at both ends. The pneumatic head is installed on the upper end of the valve body, and the valve stem is disposed within the valve body. Both the pneumatic head and the handle operating mechanism are connected to the valve stem to drive the valve stem to rise and fall. The valve core is installed on the inner end of the valve stem, and the valve seat is inclinedly disposed on the inner end of the inlet channel. The axis of the valve stem is perpendicular to the end face of the valve seat. When the valve core abuts against the valve seat, it cuts off the inlet channel and the outlet channel. The valve core includes a valve core body and a sealing gasket. One end of the valve core body is connected to the valve stem, and the sealing gasket is installed on the other end of the valve core body. A reinforcing plate is provided inside the sealing gasket, and the reinforcing plate is locked to the valve core body by at least two sets of locking components.

[0007] By adopting the above technical solution, the sealing gasket uses a structure with an internal reinforcing plate. This means a sealing gasket structure with a rigid metal reinforcing plate and an outer surface laminated with a material such as polytetrafluoroethylene (PTFE). The reinforcing plate is then tightened by a locking assembly, pressing the elastic sealing gasket firmly onto the valve core body. The large-area reinforcing plate ensures uniform stress on the sealing gasket, and the unobstructed lower surface of the gasket allows it to fit with valve seat sealing surfaces of any size. Therefore, the sealing gasket installation structure of this valve is stable and reliable, with high strength, resistance to deformation, and a long service life, ensuring good sealing performance when the valve is closed.

[0008] The present invention is further configured such that the locking assembly includes a locking screw and a fixing nut, the fixing nut is welded and fixed to the reinforcing plate, and the sealing gasket is provided with a clearance hole for the fixing nut to pass through at one end near the valve core body. The valve core body is provided with a plurality of through holes, the number of which is equivalent to that of the locking screw. The screw portion of the locking screw passes through the corresponding through hole and is threadedly connected to the corresponding fixing nut.

[0009] By adopting the above technical solution, tightening the locking screw and pulling the reinforcing plate will subject the sealing gasket to a positive pressure perpendicular to the valve core body. When it is necessary to remove the sealing gasket, simply loosen the locking screw and remove the sealing gasket. The disassembly and assembly operation is very convenient.

[0010] The present invention is further configured such that the reinforcing plate is provided with a plurality of hexagonal grooves, the number of which is equivalent to that of the fixing nuts, and the fixing nuts are partially embedded in the corresponding hexagonal grooves.

[0011] By adopting the above technical solution, not only is it easier to install and position the fixing nut, but the strength of the welding between the fixing nut and the reinforcing plate can also be improved.

[0012] The present invention is further configured such that the valve core body is provided with a plurality of clearance grooves at the end away from the sealing gasket for the screw heads of the corresponding locking screws to be inserted.

[0013] By adopting the above technical solution, not only is it more aesthetically pleasing, but the locking screws are also less likely to loosen due to external influences.

[0014] The present invention is further provided that the valve core body is provided with a connecting sleeve at the end away from the sealing gasket, and the connecting sleeve is connected to the valve stem by a pin.

[0015] By adopting the above technical solution, the two are connected by a pin, which has the advantages of simple structure, high reliability and low cost.

[0016] The present invention is further configured such that the valve core includes a pressure sleeve and a waterproof gasket, the pressure sleeve is threaded to the outer periphery of the connecting sleeve and surrounds the pin, the waterproof gasket is sandwiched between the pressure sleeve and the valve core body, and the waterproof gasket blocks the clearance groove.

[0017] By adopting the above technical solution, not only can the pin be prevented from loosening, ensuring the stability of the connection structure between the valve core and the valve stem, but the medium can also be prevented from entering the relief groove and corroding the locking screw or impurities from clogging the relief groove, ensuring that the locking screw can be loosened smoothly when the sealing gasket is disassembled later.

[0018] The present invention is further configured such that a positioning groove is provided at the end of the valve core body away from the valve stem, and the sealing gasket is partially embedded in the positioning groove.

[0019] By adopting the above technical solution to position the gasket, the stability of the gasket installation structure can be further improved.

[0020] The present invention is further configured such that the valve seat and the valve body are an integral structure, and the valve seat is provided with an annular sealing flange at one end near the valve core. When the valve is closed, the sealing gasket abuts against the sealing flange.

[0021] By adopting the above technical solution, the valve seat not only has high structural strength, but also the sealing flange can increase the local stress when it is in contact with the sealing gasket, thereby improving the sealing effect when the valve is closed. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This utility model Figure 1 Enlarged structural diagram of section A in the middle;

[0024] Figure 3 This is a schematic diagram of the valve core structure of this utility model;

[0025] Figure 4This is an exploded view of the valve core of this utility model.

[0026] In the diagram: 1. Valve body; 2. Pneumatic head; 3. Valve stem; 4. Valve core; 5. Valve seat; 6. Inlet channel; 7. Outlet channel; 8. Valve core body; 9. Sealing gasket; 10. Reinforcing plate; 11. Locking assembly; 12. Locking screw; 13. Fixing nut; 14. Clearance hole; 15. Through hole; 16. Hexagonal groove; 17. Clearance groove; 18. Connecting sleeve; 19. Pin; 20. Pressure sleeve; 21. Waterproof gasket; 22. Positioning groove; 23. Sealing flange; 24. Handle operating mechanism. Detailed Implementation

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Example: As attached Figures 1-4The manual valve with pneumatic angle seat shown includes a valve body 1, a pneumatic head 2, a handle operating mechanism 24, a valve stem 3, a valve core 4, and a valve seat 5. The valve body 1 has an inlet channel 6 and an outlet channel 7 that communicate with each other at both ends. The pneumatic head 2 is installed on the upper end of the valve body 1, and the valve stem 3 is disposed inside the valve body 1. Both the pneumatic head 2 and the handle operating mechanism 24 are connected to the valve stem 3 to drive the valve stem 3 to rise and fall. The connection method between the pneumatic head 2 and the valve stem 3, and the connection method between the handle operating mechanism 24 and the valve stem 3, are the same as those disclosed in utility model patent application number CN202120434444.1, which is prior art. Therefore, it has… The body structure is not described in detail here. The valve core 4 is installed at the inner end of the valve stem 3, and the valve seat 5 is inclinedly set at the inner end of the inlet channel 6. The angle between the axis of the valve seat 5 and the axis of the inlet channel 6 is 130°, and the axis of the valve stem 3 is perpendicular to the end face of the valve seat 5. When the valve core 4 abuts against the valve seat 5, it cuts off the inlet channel 6 and the outlet channel 7. The valve core 4 includes a valve core body 8 and a sealing gasket 9. One end of the valve core body 8 is connected to the valve stem 3, and the sealing gasket 9 is installed at the other end of the valve core body 8. The sealing gasket 9 has a reinforcing plate 10 inside, and the reinforcing plate 10 is locked to the valve core body 8 by at least two sets of locking components 11. The sealing gasket 9 adopts a structure with an internal reinforcing plate 10. This means the sealing gasket 9 is constructed by laminating a rigid metal reinforcing plate 10 with a material such as polytetrafluoroethylene (PTFE) on its outer surface. The locking assembly 11 then tightens the reinforcing plate 10, pressing the elastic sealing gasket 9 firmly onto the valve core body 8. The large-area reinforcing plate 10 ensures even force distribution on the sealing gasket 9, and the unobstructed lower surface of the sealing gasket 9 allows it to fit with sealing surfaces of valve seats 5 of any size. Therefore, the sealing gasket 9 installation structure of this valve is stable and reliable, with high strength, resistance to deformation, and a long service life, ensuring good sealing performance when the valve is closed.

[0029] As attached Figure 2 As shown, the locking assembly 11 includes a locking screw 12 and a fixing nut 13. The locking screw 12 is an internal hexagonal screw, and the fixing nut 13 is a hexagonal nut. The fixing nut 13 is welded and fixed to the reinforcing plate 10. The sealing gasket 9 has a clearance hole 14 at one end near the valve core body 8 for the fixing nut 13 to pass through. The cross-section of the clearance hole 14 is hexagonal, similar to the cross-section of the fixing nut 13. The valve core body 8 has multiple through holes 15, the number of which corresponds to the number of locking screws 12. The threaded portion of the locking screw 12 passes through the corresponding through hole 15 and is threadedly connected to the corresponding fixing nut 13. By tightening the locking screw 12, the reinforcing plate 10 is tightened, causing the sealing gasket 9 to be subjected to a positive pressure perpendicular to the valve core body 8. When the sealing gasket 9 needs to be removed, the locking screw 12 is loosened, and the sealing gasket 9 is removed. The disassembly and assembly operation is very convenient.

[0030] As attached Figure 2As shown, the reinforcing plate 10 has a plurality of hexagonal slots 16, the number of which is equivalent to the number of fixing nuts 13, and the fixing nuts 13 are partially embedded in the corresponding hexagonal slots 16. This design not only facilitates the installation and positioning of the fixing nuts 13, but also improves the weld strength between the fixing nuts 13 and the reinforcing plate 10.

[0031] As attached Figure 2 As shown, the valve core body 8 has multiple recessed grooves 17 at the end away from the sealing gasket 9 for the screw heads of the corresponding locking screws 12 to be inserted. This design is not only more aesthetically pleasing, but also makes the locking screws 12 less susceptible to loosening due to external influences.

[0032] As attached Figure 2 As shown, the valve core body 8 has a connecting sleeve 18 at the end away from the sealing gasket 9. The connecting sleeve 18 is connected to the valve stem 3 by a pin 19. That is, the connecting sleeve 18 and the valve stem 3 have radial holes for the pin 19 to pass through. The connection between the two by the pin 19 has the advantages of simple structure, high reliability and low cost.

[0033] As attached Figure 2 As shown, the valve core 4 also includes a pressure sleeve 20 and a waterproof gasket 21. The waterproof gasket 21 can be made of silicone. The pressure sleeve 20 is threaded to the outer periphery of the connecting sleeve 18, that is, the inner surface of the pressure sleeve 20 has an internal thread, and the outer surface of the connecting sleeve 18 has an external thread that matches the internal thread, and surrounds the pin 19. The waterproof gasket 21 is sandwiched between the pressure sleeve 20 and the valve core body 8, and the waterproof gasket 21 blocks the relief groove 17. This design not only prevents the pin 19 from loosening and ensures the stability of the connection structure between the valve core 4 and the valve stem 3, but also prevents the medium from entering the relief groove 17 and corroding the locking screw 12 or causing impurities to clog the relief groove 17, ensuring that the locking screw 12 can be loosened smoothly when the sealing gasket 9 is subsequently disassembled.

[0034] As attached Figure 2 As shown, the valve core body 8 has a positioning groove 22 at the end away from the valve stem 3. The positioning groove is circular, and the sealing gasket 9 is partially embedded in the positioning groove 22. Positioning the sealing gasket 9 can further improve the stability of the sealing gasket 9 installation structure.

[0035] As attached Figure 2 As shown, the valve seat 5 and the valve body 1 are an integral structure, and the valve seat 5 has an annular sealing flange 23 at one end near the valve core 4. When the valve is closed, the sealing gasket 9 abuts against the sealing flange 23. The valve seat 5 not only has high structural strength, but the sealing flange 23 can also increase the local stress when it is in contact with the sealing gasket 9, thereby improving the sealing effect when the valve is closed.

Claims

1. A hand and pneumatic angle valve, comprising a valve body (1), a pneumatic head (2), a handle operating mechanism (24), a valve stem (3), a valve core (4) and a valve seat (5), the valve body (1) is provided with an inlet channel (6) and an outlet channel (7) at both ends, the inlet channel (6) and the outlet channel (7) are communicated with each other, the pneumatic head (2) is installed on the upper end of the valve body (1), the valve stem (3) is arranged in the valve body (1), the pneumatic head (2) and the handle operating mechanism (24) are connected with the valve stem (3) for driving the valve stem (3) to lift, the valve core (4) is installed on the inner end of the valve stem (3), the valve seat (5) is arranged in the inner end of the inlet channel (6) and is inclined, the axis of the valve stem (3) is perpendicular to the end face of the valve seat (5), when the valve core (4) is in contact with the valve seat (5), the inlet channel (6) and the outlet channel (7) are cut off; characterized in that: The valve core (4) includes a valve core body (8) and a sealing gasket (9). One end of the valve core body (8) is connected to the valve stem (3), and the sealing gasket (9) is installed at the other end of the valve core body (8). The sealing gasket (9) has a reinforcing plate (10) inside, and the reinforcing plate (10) is locked to the valve core body (8) by at least two sets of locking components (11).

2. The manual valve with pneumatic angle seat according to claim 1, characterized in that: The locking assembly (11) includes a locking screw (12) and a fixing nut (13). The fixing nut (13) is welded and fixed to the reinforcing plate (10). The sealing gasket (9) has a clearance hole (14) at one end near the valve core body (8) for the fixing nut (13) to pass through. The valve core body (8) has a plurality of through holes (15) with a number equivalent to that of the locking screw (12). The screw part of the locking screw (12) passes through the corresponding through hole (15) and is threadedly connected to the corresponding fixing nut (13).

3. The manual valve with pneumatic angle seat according to claim 2, characterized in that: The reinforcing plate (10) is provided with a plurality of hexagonal grooves (16) in number equivalent to the number of fixing nuts (13), and the fixing nuts (13) are partially embedded in the corresponding hexagonal grooves (16).

4. The manual valve with pneumatic angle seat according to claim 2, characterized in that: The valve core body (8) has a plurality of clearance grooves (17) at the end away from the sealing gasket (9) for the screw heads of the corresponding locking screws (12) to be inserted.

5. The manual valve with pneumatic angle seat according to claim 4, characterized in that: The valve core body (8) is provided with a connecting sleeve (18) at one end away from the sealing gasket (9), and the connecting sleeve (18) is connected to the valve stem (3) by a pin (19).

6. The manual valve with pneumatic angle seat according to claim 5, characterized in that: The valve core (4) also includes a pressure sleeve (20) and a waterproof gasket (21). The pressure sleeve (20) is threaded to the outer periphery of the connecting sleeve (18) and surrounds the pin (19). The waterproof gasket (21) is sandwiched between the pressure sleeve (20) and the valve core body (8) and blocks the relief groove (17).

7. The manual valve with pneumatic angle seat according to claim 1, characterized in that: The valve core body (8) is provided with a positioning groove (22) at one end away from the valve stem (3), and the sealing gasket (9) is partially embedded in the positioning groove (22).

8. The manual valve with pneumatic angle seat according to claim 1, characterized in that: The valve seat (5) and the valve body (1) are an integral structure, and the valve seat (5) has an annular sealing flange (23) at one end near the valve core (4). When the valve is closed, the sealing gasket (9) abuts against the sealing flange (23).

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