Buckle locking type corrosion-resistant fluorine-lined stop valve

Abstract

The utility model provides a buckle locking type corrosion-resistant fluorine lining stop valve which comprises a fluorine lining valve body and a fluorine lining valve cover arranged on the fluorine lining valve body, an inlet cavity, a cavity connecting hole and an outlet cavity which are sequentially communicated are formed in the fluorine lining valve body, a self-closing valve element is arranged in the cavity connecting hole, the self-closing valve element comprises an outer core shell which is inserted into the cavity connecting hole and is internally provided with an inner core cavity, and the outer core shell is internally provided with an inner core cavity. A lower inlet hole and a lower guide hole are formed in the bottom face of the outer core shell, an upper outlet hole and an upper guide hole are formed in the top face of the outer core shell, a core column is arranged in the lower guide hole and the upper guide hole in a penetrating mode, a core plate in sliding fit with the inner core cavity is arranged on the core column, a middle through hole is formed in the core plate, and a core plug connected with the upper outlet hole in an inserted mode is arranged on the core plate. A self-closing spring is arranged between the core plate and the bottom wall of the inner core cavity, and a pressing column valve rod connected with the top of the core column is movably arranged on the fluorine lining valve cover in a penetrating mode. According to the buckle locking type corrosion-resistant fluorine lining stop valve, opening and closing of the self-closing valve element are controlled in the mode that the pressing column valve rod is pressed, practicability is improved, and use is convenient.

Description

Technical Field

[0001] The utility model relates to the technical field of globe valves, in particular to a snap-lock type corrosion-resistant fluorine-lined globe valve. Background Art

[0002] In the chemical industry, globe valves are usually used to control the flow of media in pipelines with strongly corrosive and strongly oxidizing media such as chlorine, chlorinated water, hydrogen chloride, refined brine, high-purity hydrochloric acid, sulfuric acid, phosphoric acid, hydrofluoric acid, aqua regia, and alkaline solutions. Ordinary globe valves do not have the characteristics of special valves, and the strongly corrosive and strongly oxidizing media will damage the valve body and valve cover, thus resulting in a short service life of the globe valve. The fluorine-lined globe valve is a special valve applied to pipelines with strongly corrosive media. It extends the service life of the globe valve by lining the inner layer of the valve body and valve cover, and the materials of the inner layer are polytetrafluoroethylene, polyvinyl fluoride, etc.

[0003] The Chinese patent with the authorized publication number CN209325067U discloses a strong-corrosion-resistant and particle-resistant fluoroplastic fully-lined globe valve, which includes a valve body with inlets and outlets, a valve cover connected to the valve body, a valve seat arranged in the valve body, a valve flap cooperatively arranged on the valve seat, a valve stem integrally connected to the upper end of the valve flap, the valve stem extending out of the valve cover, and a dynamic sealing structure arranged between the valve stem and the valve cover. A transmission nut is arranged on the valve cover, a transmission lead screw is cooperatively arranged in the transmission nut, and a hand wheel is connected to one end of the transmission lead screw; the feature is that a guide block for connecting the transmission lead screw and the valve stem is arranged between the other end of the transmission lead screw and the end of the valve stem extending out of the valve cover.

[0004] The above prior art solutions have the following defects: when the strong-corrosion-resistant and particle-resistant fluoroplastic fully-lined globe valve is in use, workers rotate the transmission lead screw by connecting the hand wheel. Since the transmission lead screw is threadedly connected to the transmission nut, there is a defect of inconvenient use when the strong-corrosion-resistant and particle-resistant fluoroplastic fully-lined globe valve rotates the transmission lead screw by connecting the hand wheel. Content of the Utility Model

[0005] The problem to be solved by the utility model is to provide a snap-lock type corrosion-resistant fluorine-lined globe valve aiming at the above deficiencies in the prior art, which solves the problem of inconvenient use in the prior art.

[0006] The above-mentioned utility model object of the present utility model is achieved through the following technical solutions: A snap-lock type corrosion-resistant fluorine-lined globe valve, including a fluorine-lined valve body and a fluorine-lined valve cover arranged on the fluorine-lined valve body. The inside of the fluorine-lined valve body has an inlet cavity, a connecting cavity hole, and an outlet cavity that are sequentially communicated. An automatic closing valve core is arranged in the connecting cavity hole. The automatic closing valve core includes an outer core shell inserted into the connecting cavity hole and having an inner core cavity inside. A lower inlet hole and a lower guiding hole are opened on the bottom surface of the outer core shell, an upper outlet hole and an upper guiding hole are opened on the top surface of the outer core shell, a core column is penetrated through the lower guiding hole and the upper guiding hole, a core plate slidably matched with the inner core cavity is arranged on the core column, a middle through hole is opened on the core plate, a core plug inserted into the upper outlet hole is arranged on the core plate, and an automatic closing spring is arranged between the core plate and the bottom wall of the inner core cavity. A pressing column valve rod movably penetrating through the fluorine-lined valve cover and connected to the top of the core column is provided.

[0007] The present utility model is further arranged as: The cross-sections of the upper guiding hole, the lower guiding hole, and the core column are all regular hexagons.

[0008] The present utility model is further arranged as: A connecting platform is arranged at the top of the core column, and a connecting screw hole for threadedly connecting with the bottom of the pressing column valve rod is opened on the top surface of the connecting platform.

[0009] The present utility model is further arranged as: An embedded plate groove located directly above the connecting cavity hole is opened on the bottom wall of the outlet cavity. A positioning core plate for being embedded and connected with the embedded plate groove is arranged at the top of the outer side wall of the outer core shell, and the positioning core plate is screw-connected to the bottom wall of the embedded plate groove.

[0010] The present utility model is further arranged as: An upper rod-penetrating hole, a mounting seat hole, a packing groove, and a lower rod-penetrating hole are sequentially opened downward on the top surface of the fluorine-lined valve cover. The pressing column valve rod sequentially penetrates through the upper rod-penetrating hole, the mounting seat hole, the packing groove, and the lower rod-penetrating hole from top to bottom. A plurality of stacked packing rings are embedded in the packing groove, and the packing rings are sleeved on the pressing column valve rod.

[0011] The present utility model is further arranged as: A pressing ring seat with the bottom inserted and matched with the packing groove is arranged in the mounting seat hole. A middle rod-penetrating hole for the pressing column valve rod to pass through is opened on the top surface of the pressing ring seat. A locking seat perforation is opened on the top surface of the pressing ring seat. A fixing seat is arranged on the side wall of the fluorine-lined valve cover. The fixing seat includes a pair of fixing plates arranged on the side wall of the fluorine-lined valve cover. A side shaft hole is opened on the fixing plate, a locking seat pin shaft is penetrated through the side shaft hole, a locking seat screw rod is arranged on the locking seat pin shaft, a middle shaft hole for the locking seat pin shaft to pass through is opened on the bottom of the outer side wall of the locking seat screw rod, the top of the locking seat screw rod penetrates through the locking seat perforation and is threadedly connected with a locking seat nut, and a locking seat washer sleeved on the locking seat screw rod is arranged between the bottom surface of the locking seat nut and the top surface of the pressing ring seat.

[0012] The present utility model is further configured as follows: a locking rod hole and a lower locking rod hole are formed at the top of the outer side wall of the pressing column valve stem. The locking rod hole is directly above the lower locking rod hole. A through-pin hole aligned with the locking rod hole and the lower locking rod hole is formed at the top of the outer side wall of the fluorine-lined valve cover. A locking rod pin inserted into the locking rod hole and the lower locking rod hole is inserted into the through-pin hole.

[0013] The present utility model is further configured as follows: a limiting plate is provided at the top of the pressing column valve stem.

[0014] To sum up, the beneficial technical effects of the present utility model are as follows: The snap-lock corrosion-resistant fluorine-lined globe valve controls the opening and closing of the self-closing valve core by pressing the pressing column valve stem, which can not only reduce the wear between the pressing column valve stem and the packing ring, but also improve the practicability of the snap-lock corrosion-resistant fluorine-lined globe valve, and the snap-lock corrosion-resistant fluorine-lined globe valve is relatively convenient to use. Description of the Drawings

[0015] Figure 1 is a sectional view structure diagram of the snap-lock corrosion-resistant fluorine-lined globe valve in the present utility model;

[0016] Figure 2 is a structure diagram of the snap-lock corrosion-resistant fluorine-lined globe valve in the present utility model;

[0017] Figure 3 is a structure diagram of the self-closing valve core in the present utility model;

[0018] Figure 4 is a sectional view structure diagram of the self-closing valve core in the present utility model;

[0019] Figure 5 is a structure diagram of the core column and the core plate in the present utility model;

[0020] Figure 6 is a partial sectional view structure diagram of the snap-lock corrosion-resistant fluorine-lined globe valve in the present utility model.

[0021] In the above-mentioned drawings: 1. Fluorine-lined valve body; 11. Inlet cavity; 12. Connecting cavity hole; 13. Outlet cavity; 14. Panel groove; 2. Fluorine-lined valve cover; 3. Self-closing valve core; 4. Outer core shell; 5. Fixed core plate; 6. Inner core cavity; 7. Lower inlet hole; 8. Upper outlet hole; 9. Upper guide hole; 10. Lower guide hole; 15. Core column; 16. Connecting platform; 17. Connecting screw hole; 18. Core plate; 19. Middle through hole; 20. Core plug; 21. Self-closing spring; 22. Upper through rod hole; 23. Mounting seat hole; 24. Packing groove; 25. Lower through rod hole; 26. Packing ring; 27. Pressure ring seat; 28. Middle through rod hole; 29. Lock seat perforation; 30. Fixed seat; 301. Fixed plate; 31. Side shaft hole; 32. Lock seat pin shaft; 33. Lock seat screw; 34. Middle shaft hole; 35. Lock seat nut; 36. Lock seat washer; 37. Pressure column valve rod; 38. Limiting plate; 39. Upper lock rod hole; 40. Lower lock rod hole; 41. Through pin hole; 42. Lock rod pin. Detailed implementation manners

[0022] In order to make the technical means, creative features, achieved purposes and functions realized by the present utility model clearer and easier to understand, the present utility model will be further described below in conjunction with the drawings and specific implementation manners.

[0023] As Figure 1 shown, the present utility model provides a snap-lock type corrosion-resistant fluorine-lined globe valve, which includes a fluorine-lined valve body 1 and a fluorine-lined valve cover 2 bolted to the fluorine-lined valve body 1. The interior of the fluorine-lined valve body 1 has an inlet cavity 11, a connecting cavity hole 12, and an outlet cavity 13 that are connected in sequence. An embedded plate groove 14 is formed on the bottom wall of the outlet cavity 13. The cross-section of the embedded plate groove 14 is annular. The embedded plate groove 14 is located directly above the connecting cavity hole 12 and is in communication with the connecting cavity hole 12.

[0024] In this embodiment, both the fluorine-lined valve body 1 and the fluorine-lined valve cover 2 are lined with an inner layer formed of polytetrafluoroethylene, so that this snap-lock type corrosion-resistant fluorine-lined globe valve has the advantage of corrosion resistance.

[0025] As Figure 1 and 3 shown, a self-closing valve core 3 is arranged in the connecting cavity hole 12. The self-closing valve core 3 includes an outer core shell 4. The outer core shell 4 is cylindrical. The outer core shell 4 is inserted and matched with the connecting cavity hole 12. The outer core shell 4 is formed by splicing a pair of half shells by welding. The top of the outer side wall of the outer core shell 4 is integrally connected with a fixed core plate 5. The cross-section of the fixed core plate 5 is annular. The fixed core plate 5 is arranged in half on the two half shells. The fixed core plate 5 is inserted and matched with the embedded plate groove 14. The fixed core plate 5 is screwed to the bottom wall of the embedded plate groove 14. The materials of the outer core shell 4 and the fixed core plate 5 are polytetrafluoroethylene with corrosion-resistant characteristics.

[0026] As Figure 3 and 4As shown, the interior of the outer core shell 4 has an inner core cavity 6, and the cross-section of the inner core cavity 6 is circular. Two lower inlet holes 7 are symmetrically formed on the bottom surface of the outer core shell 4, and both of the two lower inlet holes 7 communicate with the inner core cavity 6. The cross-section of the lower inlet hole 7 is a fan-shaped ring. Two upper outlet holes 8 are symmetrically formed on the top surface of the outer core shell 4, and both of the two upper outlet holes 8 communicate with the inner core cavity 6. The cross-section of the upper outlet hole 8 is a fan-shaped ring.

[0027] As Figure 4 and 5 shown, an upper guide hole 9 is formed on the top surface of the outer core shell 4, and a lower guide hole 10 is formed on the bottom surface of the outer core shell 4. Both the upper guide hole 9 and the lower guide hole 10 communicate with the inner core cavity 6. The upper guide hole 9 is directly above the lower guide hole 10. The cross-sections of both the upper guide hole 9 and the lower guide hole 10 are regular hexagons, and both the upper guide hole 9 and the lower guide hole 10 are formed on two half shells in a split manner. A core column 15 passes through the upper guide hole 9 and the lower guide hole 10. The top of the core column 15 extends above the upper guide hole 9, and the bottom of the core column 15 extends below the lower guide hole 10. The core column 15 is in sliding fit with the upper guide hole 9 and the lower guide hole 10. Since the cross-sections of the upper guide hole 9, the lower guide hole 10, and the core column 15 are all regular hexagons, the core column 15 is restricted from rotating when making a reciprocating linear motion up and down. A connecting platform 16 is fixedly connected to the top of the core column 15, and a connecting screw hole 17 is formed on the top surface of the connecting platform 16.

[0028] As Figure 4 and 5 shown, a core plate 18 is fixedly connected to the middle of the core column 15. The core plate 18 is in sliding fit with the inner core cavity 6. Two middle through holes 19 are symmetrically formed on the top surface of the core plate 18. The cross-section of the middle through hole 19 is a fan-shaped ring. Core plugs 20 are fixedly connected to the end surface of the core column 15 facing the upper guide hole 9. The number of the core plugs 20 is two, and the two core plugs 20 are respectively in plug-in fit with the two upper outlet holes 8. In this embodiment, the materials of the core column 15, the core plate 18, and the core plugs 20 are all polytetrafluoroethylene with corrosion-resistant characteristics.

[0029] As Figure 4 shown, a self-closing spring 21 is sleeved on the core column 15. One end of the self-closing spring 21 abuts against the bottom surface of the core plate 18, and the other end abuts against the bottom wall of the inner core cavity 6. The elastic force generated by the reset of the self-closing spring 21 pushes the core plate 18 upward until the top surface of the core plate 18 abuts against the top wall of the inner core cavity 6. At this time, the core plug 20 is inserted into the upper outlet hole 8, and then the self-closing valve core 3 is in a closed state.

[0030] As Figure 1As shown in the figure, an upper through-rod hole 22, a mounting seat hole 23, a packing groove 24, and a lower through-rod hole 25 are successively opened downward on the top surface of the fluorine-lined valve cover 2. The upper through-rod hole 22 is a circular hole. Both ends of the mounting seat hole 23 extend to the side wall of the fluorine-lined valve cover 2, that is, the mounting seat hole 23 is penetrated through the side wall of the fluorine-lined valve cover 2. The cross-section of the packing groove 24 is circular. In this embodiment, five successively stacked packing rings 26 are embedded in the packing groove 24, and the lower through-rod hole 25 is a circular hole.

[0031] As Figure 1 and 2 shown in the figure, a pressure ring seat 27 is arranged in the mounting seat hole 23. The pressure ring seat 27 is in a "T" shape. The bottom of the pressure ring seat 27 is in plug-in fit with the packing groove 24. The pressure ring seat 27 is used to press and fix the packing ring 26 in the packing groove 24. A middle through-rod hole 28 is penetrated through the center of the top surface of the pressure ring seat 27. The middle through-rod hole 28 is a circular hole. The middle through-rod hole 28 is aligned with the upper through-rod hole 22 and the lower through-rod hole 25. Two lock seat through holes 29 are symmetrically opened on the top surface of the pressure ring seat 27. The two lock seat through holes 29 are respectively located on both sides of the middle through-rod hole 28. The lock seat through holes 29 are circular holes.

[0032] As Figure 2 and 6 shown in the figure, two fixing seats 30 are symmetrically arranged on the side wall of the fluorine-lined valve cover 2. The fixing seat 30 includes a pair of fixing plates 301. The two fixing plates 301 are symmetrically arranged on the side wall of the fluorine-lined valve cover 2. A side shaft hole 31 is penetrated through the side wall of each fixing plate 301. The side shaft hole 31 is a circular hole. A lock seat pin shaft 32 is penetrated through the two side shaft holes 31. A lock seat screw 33 is arranged on the lock seat pin shaft 32. The bottom of the lock seat screw 33 is located between the two fixing plates 301. A middle shaft hole 34 for the lock seat pin shaft 32 to pass through is opened at the bottom of the outer side wall of the lock seat screw 33. The middle shaft hole 34 is aligned with the side shaft hole 31. The top of the lock seat screw 33 passes through the lock seat through hole 29 and is threadedly connected with a lock seat nut 35. A lock seat washer 36 sleeved on the lock seat screw 33 is arranged between the bottom surface of the lock seat nut 35 and the top surface of the pressure ring seat 27.

[0033] As Figure 1 shown in the figure, a pressure column valve rod 37 is penetrated through the fluorine-lined valve cover 2. The pressure column valve rod 37 successively passes through the upper through-rod hole 22, the mounting seat hole 23, the middle through-rod hole 28, and the lower through-rod hole 25 from top to bottom and then extends into the outlet cavity 13. A limiting plate 38 is fixedly connected to the top of the pressure column valve rod 37. The limiting plate 38 is in a circular ring shape. The packing ring 26 is sleeved on the middle part of the pressure column valve rod 37. The bottom of the pressure column valve rod 37 is threadedly connected with the connecting screw hole 17 of the connecting table 16.

[0034] As Figure 1As shown in the figure, a locking rod hole 39 and a lower locking rod hole 40 are formed at the top of the outer side wall of the pressure column valve stem 37. The locking rod hole 39 is directly above the lower locking rod hole 40. A through-pin hole 41 is formed at the top of the outer side wall of the fluorine-lined valve cover 2. The through-pin hole 41 can be aligned with the locking rod hole 39 and the lower locking rod hole 40. A locking rod pin 42 is inserted through the through-pin hole 41. The locking rod pin 42 can be inserted and matched with the locking rod hole 39 and the lower locking rod hole 40.

[0035] When the snap-lock corrosion-resistant fluorine-lined globe valve is opened, the worker presses the limit plate 38 until the bottom surface of the limit plate 38 abuts against the top surface of the fluorine-lined valve cover 2. At this time, the locking rod hole 39 is aligned with the through-pin hole 41. During this process, the pressure column valve stem 37 pushes the core column 15 downward. The downward movement of the core column 15 will drive the core plate 18 and the core plug 20 downward. Then, the core plug 20 is withdrawn from the upper outlet hole 8. Then, the worker inserts the locking rod pin 42 through the through-pin hole 41 and then into the locking rod hole 39. At this time, the snap-lock corrosion-resistant fluorine-lined globe valve remains in the open state.

[0036] When the snap-lock corrosion-resistant fluorine-lined globe valve is closed, the worker withdraws the locking rod pin 42. The elastic force generated by the reset of the self-closing spring 21 will push the core plate 18 upward until the top surface of the core plate 18 abuts against the top wall of the inner core cavity 6. Then, the core plug 20 blocks the upper outlet hole 8. During this process, the upward movement of the core plate 18 will drive the core column 15 and the pressure column valve stem 37 upward until the lower locking rod hole 40 is aligned with the through-pin hole 41. The worker inserts the locking rod pin 42 through the through-pin hole 41 and then into the lower locking rod hole 40. At this time, the snap-lock corrosion-resistant fluorine-lined globe valve remains in the closed state.

[0037] The snap-lock corrosion-resistant fluorine-lined globe valve controls the opening and closing of the self-closing valve core 3 by pressing the pressure column valve stem 37. This not only reduces the wear between the pressure column valve stem 37 and the packing ring 26, but also improves the practicability of the snap-lock corrosion-resistant fluorine-lined globe valve. The snap-lock corrosion-resistant fluorine-lined globe valve is relatively convenient to use.

[0038] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit them. Although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present invention can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present invention, and they should all be covered within the scope of the claims of the present invention.

Claims

1. A snap-lock type corrosion-resistant fluorine-lined stop valve, comprising a fluorine-lined valve body (1), and a fluorine-lined valve cover (2) arranged on the fluorine-lined valve body (1), characterized in that: The fluorine-lined valve body (1) has an inlet cavity (11), a connecting cavity hole (12), and an outlet cavity (13) which are connected in sequence. A self-closing valve core (3) is arranged in the connecting cavity hole (12). The self-closing valve core (3) comprises an outer core shell (4) which is inserted into the connecting cavity hole (12) and has an inner core cavity (6) therein. A lower inlet hole (7) and a lower guide hole (10) are provided on the bottom surface of the outer core shell (4). An upper outlet hole (8) and an upper guide hole (9) are provided on the top surface of the outer core shell (4). The lower guide hole (10) is provided at the bottom surface of the outer core shell (4). ) and the upper guide hole (9) are provided with a core column (15), the core column (15) is provided with a core plate (18) which is slidably matched with the inner core cavity (6), the core plate (18) is provided with a central through hole (19), the core plate (18) is provided with a core plug (20) which is plugged into the upper outlet hole (8), a self-closing spring (21) is provided between the core plate (18) and the bottom wall of the inner core cavity (6), and a pressure column valve stem (37) which is connected to the top of the core column (15) is movably provided on the fluorine-lined valve cover (2).

2. A snap-lock type corrosion-resistant fluorine-lined stop valve according to claim 1, characterized in that: The cross sections of the upper guide hole (9), the lower guide hole (10) and the core column (15) are all regular hexagons.

3. The snap-lock type corrosion-resistant fluorine-lined stop valve according to claim 1, characterized in that: A connecting platform (16) is arranged on the top of the core column (15), and a connecting screw hole (17) is provided on the top surface of the connecting platform (16) for threaded connection with the bottom of the pressure column valve stem (37).

4. The snap-lock type corrosion-resistant fluorine-lined stop valve according to claim 1, characterized in that: The bottom wall of the outlet cavity (13) is provided with a panel groove (14) located directly above the connecting cavity hole (12); the top of the outer wall of the outer core shell (4) is provided with a core fixing plate (5) which is engaged with the panel groove (14); the core fixing plate (5) is screwed to the bottom wall of the panel groove (14).

5. The snap-lock type corrosion-resistant fluorine-lined stop valve according to claim 1, characterized in that: An upper rod hole (22), a seat hole (23), a stuffing groove (24), and a lower rod hole (25) are sequentially opened on the top surface of the fluorine-lined valve cover (2) downwardly; the pressure column valve stem (37) passes through the upper rod hole (22), the seat hole (23), the stuffing groove (24), and the lower rod hole (25) sequentially from top to bottom; a plurality of stuffing rings (26) stacked in sequence are embedded in the stuffing groove (24); and the stuffing ring (26) is sleeved on the pressure column valve stem (37).

6. The snap-lock type corrosion-resistant fluorine-lined stop valve according to claim 5, characterized in that: The seat hole (23) is provided with a pressure ring seat (27) whose bottom is plugged into the packing groove (24); the top surface of the pressure ring seat (27) is provided with a middle rod hole (28) for the pressure column valve stem (37) to pass through; the top surface of the pressure ring seat (27) is provided with a lock seat through hole (29); a fixing seat (30) is provided on the side wall of the fluorine-lined valve cover (2); the fixing seat (30) comprises a pair of fixing plates (301) provided on the side wall of the fluorine-lined valve cover (2); the fixing plates (301) are provided with a side shaft A hole (31) is provided in the side shaft hole (31), a lock seat pin shaft (32) is passed through the side shaft hole (31), a lock seat screw (33) is arranged on the lock seat pin shaft, a central shaft hole (34) for the lock seat pin shaft (32) to pass through is opened at the bottom of the outer wall of the lock seat screw (33), a top of the lock seat screw (33) passes through the lock seat through hole (29) and is threadedly connected with a lock seat nut (35), and a lock seat washer (36) sleeved on the lock seat screw (33) is arranged between the bottom surface of the lock seat nut (35) and the top surface of the pressure ring seat (27).

7. The snap-lock type corrosion-resistant fluorine-lined stop valve according to claim 1, characterized in that: An upper locking rod hole (39) and a lower locking rod hole (40) are provided at the top of the outer wall of the pressure column valve stem (37), and the upper locking rod hole (39) is located directly above the lower locking rod hole (40). A nail hole (41) aligned with the upper locking rod hole (39) and the lower locking rod hole (40) is provided at the top of the outer wall of the fluorine-lined valve cover (2), and a locking rod pin (42) inserted into the upper locking rod hole (39) and the lower locking rod hole (40) is provided in the nail hole (41).

8. The snap-lock type corrosion-resistant fluorine-lined stop valve according to claim 1, characterized in that: A limiting plate (38) is provided on the top of the pressure column valve stem (37).

Images