CN113374886A

CN113374886A - Sanitary-grade straight-through full-covered ball valve

Info

Publication number: CN113374886A
Application number: CN202110659734.0A
Authority: CN
Inventors: 朱常有; 张继
Original assignee: Qili Holding Group Co ltd
Current assignee: Qili Holding Group Co ltd
Priority date: 2021-06-15
Filing date: 2021-06-15
Publication date: 2021-09-10
Anticipated expiration: 2041-06-15
Also published as: CN113374886B

Abstract

The application relates to a sanitary-grade through full-wrapping ball valve which comprises a valve body, a valve cover connected with the valve body, a valve core arranged in the valve body, a valve seat arranged between the valve body and the valve core, a valve rod in clamping fit with the valve core and a rotating handle used for driving the valve rod to rotate, wherein the valve body comprises a through pipe, an installation pipe connected to the side wall of the through pipe and a positioning seat connected to the end part of the installation pipe, the installation pipe is used for the valve rod to penetrate through, and the side wall of the positioning seat is provided with a slot; the rotating handle comprises a connecting plate, an inclined plate, a handle and a locking piece, the connecting plate is connected with the valve rod, the inclined plate is connected between the connecting plate and the handle, and the locking piece is sleeved on the inclined plate in a sliding mode and used for being clamped into the slot; the locking device also comprises a limiting device used for limiting the locking piece to slide downwards. After the switching of the working state of the ball valve is completed, the rotating handle cannot rotate due to accidental touch because of the matching of the locking piece and the slot, and the normal work of the ball valve is guaranteed.

Description

Sanitary-grade straight-through full-covered ball valve

Technical Field

The application relates to the field of ball valves, in particular to a sanitary-grade straight-through full-package ball valve.

Background

The straight-through ball valve is one type of valve, and the closing member is a ball body which rotates around the central line of the valve body to open or close the pipeline. The straight-through ball valve mainly plays a role in cutting off in a pipeline system. In the pharmaceutical, food and other industries, plumbing and valves are required to be sanitary to avoid contamination of the transport medium.

Chinese patent with publication number CN213064838U discloses a direct full-enclosed ball valve, including the valve body and installing at the inside spheroid of valve body, the inside of valve body is run through and is equipped with direct pipe, two sets of sealing washers are installed to spheroidal both ends symmetry, and the upper and lower both ends of two sets of sealing washers all are equipped with the sealing plug with spheroid laminating department, the spout has been seted up at spheroidal top, and the upper portion sliding connection of spout has the slider to the top of slider is connected with the valve rod, the control lever is installed at the top of valve body, and the control lever is connected with the valve rod.

Aiming at the related technology, when the ball valve needs to be opened and closed, a human hand rotates the control rod to drive the valve rod to rotate, so that the ball body rotates, and the valve body channel is opened or closed. However, after the control rod is rotated, the risk that the control rod is accidentally touched to rotate still exists, so that the valve body channel is easily accidentally opened or closed, and the normal work of the ball valve is influenced.

Disclosure of Invention

In order to avoid accidental opening or closing of a valve body channel, the application provides a sanitary-grade straight-through full-package ball valve.

The application provides a direct complete package ball valve of sanitary-grade adopts following technical scheme:

a sanitary-grade through full-wrapping ball valve comprises a valve body, a valve cover connected with the valve body, a valve core arranged in the valve body, a valve seat arranged between the valve body and the valve core, a valve rod in clamping fit with the valve core and a rotating handle used for driving the valve rod to rotate, wherein the valve body comprises a through pipe, an installation pipe connected to the side wall of the through pipe and a positioning seat connected to the end part of the installation pipe, the installation pipe is used for the valve rod to pass through, and the side wall of the positioning seat is provided with a slot;

the rotating handle comprises a connecting plate, an inclined plate, a handle and a locking piece, the connecting plate is connected with the valve rod, the inclined plate is connected between the connecting plate and the handle, and the locking piece is sleeved on the inclined plate in a sliding mode and used for being clamped into the slot;

still including the stop device who is used for restricting the locking piece gliding, stop device includes connecting strip and the ejector pin be connected with the connecting plate, the connecting strip is located the one side that the locking piece was kept away from to the valve rod, the ejector pin is located between valve rod and the locking piece, the connecting strip upper end is rotated and is connected with the limiting plate, limiting plate one end is for pressing end, the other end is spacing end, the limiting plate rotates to the spacing end of propping the top strip upper end and supports the hang plate.

By adopting the technical scheme, when the ball valve needs to be opened and closed, the locking piece is moved upwards to pass through the limiting end, the limiting end is reset after being stressed and rotated to abut against the inclined plate, the locking piece abuts against the upper side of the limiting end and cannot slide downwards, then the handle is held by hands, the handle is rotated to drive the valve rod to rotate, the valve core is further rotated to complete the opening and closing of the ball valve, and finally the pressing end is pressed down, the limiting end is lifted up to enable the locking piece to slide downwards to be clamped into the slot.

Firstly, after the working state of the ball valve is switched, the rotating handle is limited and cannot rotate due to the matching of the locking piece and the slot, so that the rotating handle cannot rotate due to accidental touch, and the normal work of the ball valve is ensured; in the rotating process of the second rotating handle, the locking piece is limited and cannot slide down, smooth rotation is facilitated, and the unlocking process is fast and convenient.

Optionally, a limiting spring is connected between one end of the limiting plate facing the inclined plate and the connecting plate.

Through adopting above-mentioned technical scheme, spacing end receives spacing spring's effect and the hang plate of laminating all the time, and spacing end can prevent effectively on the one hand that the locking piece from moving down, and the twist grip of being convenient for rotates, and spacing end of on the other hand can also prevent effectively that the locking piece from receiving vibrations and moving up.

Optionally, the pressing end penetrates through a through hole, a pressing rod penetrates through the through hole, the inner diameter of the through hole is larger than the diameter of the pressing rod, the lower end of the pressing rod is in threaded connection with the connecting plate, the outer wall of the upper end of the pressing rod is connected with a pressing ring, and the pressing ring is located on the upper side of the pressing end.

By adopting the technical scheme, one of the two pressing rods slides along the self axial direction after rotating, the pressing ring can drive the pressing end to move downwards, so that the limiting end is lifted, the locking piece conveniently slides downwards to penetrate through a gap between the limiting end and the inclined plate, and the driving mode is more labor-saving compared with a mode of directly pressing; and on the other hand, when the compression ring is inactive, the pressing end still has a certain downward rotating space, so that the limiting end can be lifted, and the locking piece can be conveniently and directly moved upwards to the upper side of the limiting end.

Optionally, the action bars are arranged in a hollow mode of the pressing rod in a penetrating mode and are movably arranged, the upper end of each action bar is connected with an operation handle, the side wall of each action bar is connected with a clamping block, the inner wall of the pressing rod is provided with an annular groove for the clamping block to be clamped in, and the upper side of the annular groove is communicated with a clamping groove for the clamping block to be clamped in.

By adopting the technical scheme, at ordinary times, after the operating handle rotates, the clamping block rotates along the annular groove, and the operating rod cannot drive the pressing rod to rotate; when the operating handle is lifted up until the clamping block is clamped into the clamping groove, the clamping block acts on the side wall of the clamping groove, and the operating rod can drive the pressing rod to rotate.

Optionally, the side wall of the positioning seat is connected with a fixing seat, a fixing rod vertically arranged is arranged on the fixing seat in a penetrating mode, the upper end of the fixing rod is hemispherical, and the fixing rod is used for jacking the operating rod.

Through adopting above-mentioned technical scheme, after turning handle rotated to required position, the dead lever was automatic with action bars jack-up for the draw-in groove is gone into to the fixture block card, and the action handle of being convenient for rotates and drives the depression bar and rotate.

Optionally, the fixed rod is connected with the fixed seat in a sliding manner, the fixed seat is provided with a sliding hole for the fixed rod to pass through, the outer wall of the fixed rod is connected with a convex ring, the inner wall of the sliding hole is communicated with a cavity for the convex ring to be clamped in, and a reset spring is connected between the inner wall of one end of the cavity, which is far away from the connecting plate, and the convex ring.

Through adopting above-mentioned technical scheme, can move down after the dead lever pressurized, the depression bar of being convenient for resets the back, pushes down the action bars to the fixture block card and goes into the ring channel, and then avoids the unexpected trouble of rotating of operating handle.

Optionally, the lower side of the connecting plate is connected with a positioning sleeve sleeved on the outer wall of the lower end of the operating rod.

By adopting the technical scheme, the fixing rod is extruded by the positioning sleeve and moves downwards until the fixing rod is just opposite to the inner cavity of the positioning sleeve, and the fixing rod is reset to jack up the operating rod.

Optionally, the locking member includes a sliding sleeve slidably sleeved on the inclined plate, and an insert plate connected to a lower side of the sliding sleeve.

By adopting the technical scheme, the sliding sleeve slides downwards, and then the inserting plate is inserted into the inserting slot to complete locking.

Optionally, the valve seats are symmetrically provided with two valve seats, a spherical cavity for placing a valve core and a through cavity for the valve rod to pass through are formed between the two valve seats, and an opening for the fluid to pass through is arranged on one side of each of the two valve seats opposite to each other in a penetrating manner.

Through adopting above-mentioned technical scheme, the case receives the omnidirectional parcel of disk seat, and the fluid is difficult for being detained at the ball valve inner chamber, and the hygienic qualities of ball valve improves by a wide margin.

Optionally, a fixing plate is connected between the positioning seat and the mounting tube.

In summary, the present application includes at least one of the following beneficial technical effects:

1. through the arrangement of the locking piece, after the working state of the ball valve is switched, the rotating handle is limited and cannot rotate due to the matching of the locking piece and the slot, so that the rotating handle cannot rotate due to accidental touch, and the normal work of the ball valve is ensured;

2. through stop device's setting, twist grip rotates the in-process, and the locking piece receives the restriction and can not glide, is favorable to rotating smoothly, and the unblock process is convenient fast.

Drawings

FIG. 1 is a schematic structural diagram of a sanitary-grade straight-through full-package ball valve according to an embodiment of the present application;

FIG. 2 is an exploded view of a sanitary straight-through full-package ball valve according to an embodiment of the present application;

FIG. 3 is an exploded schematic view of a valve seat and poppet according to an embodiment of the present application;

FIG. 4 is a schematic structural view of a valve seat according to an embodiment of the present application;

FIG. 5 is a schematic front view of a sanitary straight-through all-encompassing ball valve according to an embodiment of the present application;

FIG. 6 is a cross-sectional schematic view of the twist handle and stop of FIG. 5;

FIG. 7 is an enlarged schematic view of area A of FIG. 6;

fig. 8 is a partial structural sectional view of a valve body according to an embodiment of the present application.

Description of reference numerals: 1. a valve body; 11. a straight-through pipe; 12. installing a pipe; 13. positioning seats; 131. a slot; 14. a fixing plate; 15. a fixed seat; 151. a slide hole; 152. a concave cavity; 2. a valve cover; 3. a valve core; 4. a valve seat; 41. a spherical cavity; 42. a cavity is communicated; 43. an opening; 5. a valve stem; 6. rotating the handle; 61. a connecting plate; 611. a positioning sleeve; 62. an inclined plate; 63. a grip; 64. a locking member; 641. a sliding sleeve; 642. inserting plates; 7. a limiting device; 71. a connecting strip; 72. a top rod; 73. a limiting plate; 731. a pressing end; 732. a limiting end; 733. a through hole; 74. a limiting spring; 75. a pressure lever; 751. an annular groove; 752. a card slot; 76. pressing a ring; 77. an operating lever; 771. a clamping block; 78. an operating handle; 8. fixing the rod; 81. a convex ring; 9. a return spring.

Detailed Description

The present application is described in further detail below with reference to figures 1-8.

The embodiment of the application discloses a sanitary-grade direct full-packaging ball valve. Referring to fig. 1 and 2, the all-round ball valve includes a valve body 1, a valve cover 2 connected to the valve body 1, a valve core 3 disposed inside the valve body 1, a valve seat 4 disposed between the valve body 1 and the valve core 3, a valve rod 5 engaged with the valve core 3, a rotating handle 6 for driving the valve rod 5 to rotate, and a limiting device 7.

Referring to fig. 1 and 2, the valve body 1 comprises a straight-through pipe 11, a mounting pipe 12 is vertically and fixedly connected to the side wall of the straight-through pipe 11, and the mounting pipe 12 is communicated with the inner cavity of the straight-through pipe 11. One side of the installation pipe 12 far away from the straight-through pipe 11 is provided with a positioning seat 13, the lower side of the positioning seat 13 is fixedly connected with the upper end of the installation pipe 12 through four fixing plates 14, the fixing plates 14 are L-shaped, and the four fixing plates 14 are arranged around the axial lead of the installation pipe 12 at equal intervals. The outer edge of the positioning seat 13 is square, and four side walls are provided with slots 131, and the upper end and the lower end of each slot 131 are arranged in a penetrating manner. Wherein, the inner walls of two adjacent slots 131 are fixedly connected with positioning seats 13.

Referring to fig. 2, two valve covers 2 are arranged and are respectively located at openings 43 at two ends of the through pipe 11, one end of each valve cover 2 is connected with the pipeline through a clamping hoop, and the other end of each valve cover 2 is connected with the valve body 1 through bolts and nuts. The valve cover 2 is quick-release type, so that the maintenance and the updating of the valve seat 4 inside are convenient.

Referring to fig. 3, the valve core 3 is a straight-through ball core, and a groove for the valve rod 5 to be clamped is arranged at the upper end of the straight-through ball core, so that the valve rod 5 can drive the valve core 3 to rotate. When the valve core 3 rotates to be communicated with the inner cavity of the valve cover 2, fluid can smoothly pass through; the valve core 3 blocks the fluid channel after rotating 90 degrees.

Referring to fig. 3 and 4, two valve seats 4 are symmetrically arranged, and the valve seats 4 are coated outside the valve core 3 and attached to the inner wall of the straight-through pipe 11. A spherical cavity 41 for placing the valve core 3 and a through cavity 42 for the valve rod 5 to pass through are formed between the two valve seats 4, and the through cavity 42 is opposite to the groove of the valve core 3. The opposite sides of the two valve seats 4 are provided with openings 43 for fluid to pass through, and the inner diameter of the openings 43 is equal to the inner diameter of the passage of the valve cover 2.

Referring to fig. 1 and 2, the lower end of the valve rod 5 passes through the mounting pipe 12 and is clamped into the valve core 3, and the upper end of the valve rod 5 extends out of the positioning seat 13 and is connected with the rotating handle 6.

Referring to fig. 5, the rotating handle 6 includes a connecting plate 61, an inclined plate 62, a grip 63 and a locking member 64, the connecting plate 61 is fixedly sleeved on the outer side of the upper end of the valve rod 5, the inclined plate 62 is fixedly connected between the connecting plate 61 and the grip 63, the grip 63 is parallel to the connecting plate 61, and the distance between the inclined plate 62 and the positioning seat 13 gradually increases along the direction departing from the connecting plate 61. The locking member 64 includes a sliding sleeve 641 covering the inclined plate 62, and an insertion plate 642 fixedly connected to a lower end of the sliding sleeve 641, wherein the insertion plate 642 is parallel to the inclined plate 62. The sliding sleeve 641 can slide down until the inserting plate 642 is clamped into two of the inserting grooves 131, and the inserting plate 642 is limited by the inserting grooves 131, so that the rotating handle 6 cannot rotate.

Referring to fig. 5 and 6, the limiting device 7 includes a connecting strip 71 and a push rod 72 fixedly connected to the connecting plate 61, the connecting strip 71 and the push rod 72 are both vertically disposed, the connecting strip 71 is located on a side of the valve rod 5 far away from the locking member 64, and the push rod 72 is located between the valve rod 5 and the locking member 64. The upper end of the connecting bar 71 is rotatably connected with a limiting plate 73 through a rotating shaft, one end of the limiting plate 73 away from the inclined plate 62 is a pressing end 731, and one end of the limiting plate 73 facing the inclined plate 62 is a limiting end 732. When the limit plate 73 rotates to the lower side to abut against the upper end of the push rod 72, the limit plate 73 is horizontal and the limit end 732 abuts against the inclined plate 62. The outside of the ejector rod 72 is sleeved with a limit spring 74, and two ends of the limit spring 74 are respectively fixedly connected with the connecting plate 61 and the limit plate 73. The position-limiting end 732 is always attached to the inclined plate 62 under the action of the pulling force of the position-limiting spring 74, so that when the sliding sleeve 641 is located on the upper side of the position-limiting end 732, the sliding sleeve 641 is limited by the position-limiting end 732 and cannot slide downwards, and at this time, the insertion plate 642 is not inserted into the insertion slot 131, and the rotating handle 6 can rotate freely. After the pressing end 731 moves down, the limiting end 732 is lifted, and the sliding sleeve 641 passes through the gap between the limiting end 732 and the inclined plate 62; after the pressing end 731 is reset, the sliding sleeve 641 is located under the limiting end 732.

Referring to fig. 6 and 7, the pressing end 731 is provided with a through hole 733, the through hole 733 is movably provided with a pressing rod 75, and the inner diameter of the through hole 733 is larger than the diameter of the pressing rod 75, so that the limiting plate 73 still has a certain rotating space, and the lifting of the limiting end 732 is not affected. The lower end of the pressure lever 75 is in threaded connection with the connecting plate 61, and the outer side of the upper end is fixedly sleeved with a pressure ring 76, and the pressure ring 76 abuts against the upper side of the pressing end 731. The distance from the lower end of the pressing rod 75 to the lower side of the connecting plate 61 is provided, so that the pressing rod 75 moves downwards along the axial direction in the rotating process, the pressing ring 76 can drive the pressing end 731 to move downwards, the limiting end 732 is lifted, and the pressing rod 75 cannot extend out of the connecting plate 61 in the process.

Referring to fig. 6 and 7, the pressing rod 75 is hollow and movably provided with an operating rod 77, and an operating handle 78 is fixedly connected to a side wall of an upper end of the operating rod 77. The side wall of the operating rod 77 is fixedly connected with a clamping block 771, the inner wall of the pressure rod 75 is provided with an annular groove 751 for the clamping block 771 to be clamped in, the upper side of the annular groove 751 is communicated with a clamping groove 752 for the clamping block 771 to be clamped in, and the upper end of the clamping groove 752 penetrates through the outer side of the operating rod 77. When the operating handle 78 is attached to the pressing ring 76, the lower end of the operating rod 77 extends out of the connecting plate 61 and the stopper 771 is located in the annular groove 751, so that the operating handle 78 rotates and cannot drive the pressing rod 75 to rotate. When the operating rod 77 rotates until the fixture 771 is located at the communication position of the fixture groove 752 and the annular groove 751, the operating handle 78 is lifted upwards, the fixture 771 is clamped into the fixture groove 752, and the operating handle 78 rotates to drive the pressure rod 75 to rotate. The lower side of the connecting plate 61 is fixedly connected with a positioning sleeve 611 sleeved on the outer wall of the lower end of the operating handle 78.

Referring to fig. 6 and 8, the fixing base 15 is movably inserted with a fixing rod 8, and the fixing rod 8 is vertically arranged and has a hemispherical upper end. Dead lever 8 and fixing base 15 sliding connection, fixing base 15 are provided with the slip hole 151 that supplies dead lever 8 to pass, and 8 outer walls of dead lever fixedly connected with bulge loops 81, slip hole 151 inner wall intercommunication have the cavity 152 that supplies bulge loops 81 card to go into, and bulge loops 81 can move about from top to bottom in cavity 152. A return spring 9 is fixedly connected between the inner wall of one end of the cavity 152 far away from the connecting plate 61 and the convex ring 81. When the convex ring 81 is pressed against the inner wall of the upper end of the cavity 152 by the return spring 9, the upper end of the fixing rod 8 extends out of the fixing seat 15. After the rotating handle 6 rotates, the positioning sleeve 611 can extrude the upper end of the fixed rod 8, so that the fixed rod 8 moves downwards until the inner cavity of the positioning sleeve 611 is opposite to the fixed rod 8, and the fixed rod 8 resets to jack up the operating rod 77.

The implementation principle of the sanitary-grade direct full-packaging ball valve in the embodiment of the application is as follows:

when the ball valve needs to be opened and closed, the locking piece 64 moves upwards firstly, the limiting end 732 is acted to lift upwards until the sliding sleeve 641 moves to the upper side of the limiting end 732, the limiting plate 73 is reset subsequently, the limiting end 732 abuts against the inclined plate 62, and the locking piece 64 cannot move downwards; then the rotating handle 6 is rotated by 90 degrees, the fixing rod 8 extends into the inner cavity of the positioning sleeve 611 to jack up the operating rod 77, and the clamping block 771 is clamped into the clamping groove 752; then, the operating handle 78 is rotated to rotate the pressing rod 75 to move downwards, the pressing ring 76 drives the pressing end 731 to move downwards, the limiting end 732 is lifted, the sliding sleeve 641 automatically slides downwards, and the inserting plate 642 is inserted into the slot 131 to complete locking; then, the operating handle 78 is rotated reversely to drive the pressing rod 75 to reset, finally, the operating handle 78 is pressed down to enable the fixture 771 to be clamped into the annular groove 751, the fixing rod 8 is pressed to move downwards, then, the operating handle 78 is rotated, the fixture 771 is dislocated with the fixture groove 752, and the operating rod 77 cannot move upwards.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a direct ball valve of wrapping entirely of sanitary-grade, includes valve body (1), valve gap (2) be connected with valve body (1), set up in valve core (3) of valve body (1) inside, set up disk seat (4) between valve body (1) and valve core (3), with valve core (3) joint complex valve rod (5) and be used for driving valve rod (5) pivoted twist grip (6), its characterized in that: the valve body (1) comprises a straight-through pipe (11), a mounting pipe (12) connected to the side wall of the straight-through pipe (11) and a positioning seat (13) connected to the end part of the mounting pipe (12), the mounting pipe (12) is used for a valve rod (5) to penetrate through, and a slot (131) is formed in the side wall of the positioning seat (13);

the rotating handle (6) comprises a connecting plate (61), an inclined plate (62), a handle (63) and a locking piece (64), the connecting plate (61) is connected with the valve rod (5), the inclined plate (62) is connected between the connecting plate (61) and the handle (63), and a sliding sleeve (641) of the locking piece (64) is connected to the inclined plate (62) and used for being clamped into the slot (131);

still including stop device (7) that is used for restricting locking piece (64) gliding, stop device (7) include connecting strip (71) and ejector pin (72) be connected with connecting plate (61), connecting strip (71) are located one side that locking piece (64) were kept away from in valve rod (5), ejector pin (72) are located between valve rod (5) and locking piece (64), connecting strip (71) upper end is rotated and is connected with limiting plate (73), limiting plate (73) one end is spacing end (732) for pressing end (731), the other end, limiting plate (73) rotate to when propping the top and holding spacing end (732) and support hang plate (62).

2. The sanitary-grade direct-through full-covered ball valve according to claim 1, characterized in that: and a limiting spring (74) is connected between one end of the limiting plate (73) facing the inclined plate (62) and the connecting plate (61).

3. The sanitary-grade direct-through full-covered ball valve according to claim 2, characterized in that: press end (731) to run through and be provided with through-hole (733), depression bar (75) are worn to be equipped with in through-hole (733) department, through-hole (733) internal diameter is greater than depression bar (75) diameter, depression bar (75) lower extreme and connecting plate (61) threaded connection, upper end outer wall connection have clamping ring (76), clamping ring (76) are located and press end (731) upside.

4. A sanitary grade straight-through all-wrapped ball valve according to claim 3, wherein: depression bar (75) cavity sets up and the activity wears to be equipped with action bars (77), action bars (77) upper end is connected with operation handle (78), action bars (77) lateral wall is connected with fixture block (771), depression bar (75) inner wall is provided with annular groove (751) that supply fixture block (771) card to go into, annular groove (751) upside intercommunication has draw-in groove (752) that supply fixture block (771) card to go into.

5. The sanitary-grade direct-through full-covered ball valve according to claim 4, characterized in that: the side wall of the positioning seat (13) is connected with a fixing seat (15), the fixing seat (15) penetrates through a vertically arranged fixing rod (8), the upper end of the fixing rod (8) is hemispherical, and the fixing rod (8) is used for jacking up an operating rod (77).

6. The sanitary-grade direct-through full-covered ball valve according to claim 5, characterized in that: dead lever (8) and fixing base (15) sliding connection, fixing base (15) are provided with slip hole (151) that supply dead lever (8) to pass, dead lever (8) outer wall connection has bulge loop (81), slip hole (151) inner wall intercommunication has cavity (152) that supply bulge loop (81) card to go into, cavity (152) are kept away from between one end inner wall and bulge loop (81) of connecting plate (61) and are connected with reset spring (9).

7. The sanitary-grade direct-through full-covered ball valve according to claim 6, characterized in that: the lower side of the connecting plate (61) is connected with a positioning sleeve (611) sleeved on the outer wall of the lower end of the operating rod (77).

8. The sanitary grade direct-through full-enclosed ball valve according to any one of claims 1 to 7, characterized in that: the locking piece (64) comprises a sliding sleeve (641) connected to the inclined plate (62) and an inserting plate (642) connected to the lower side of the sliding sleeve (641).

9. The sanitary-grade direct-through full-covered ball valve according to claim 1, characterized in that: the valve seat (4) is symmetrically provided with two, a spherical cavity (41) for placing the valve core (3) and a through cavity (42) for the valve rod (5) to penetrate are formed between the two valve seats (4), and an opening (43) for the fluid to pass through is arranged on one side of each valve seat (4) opposite to each other in a penetrating mode.

10. The sanitary-grade direct-through full-covered ball valve according to claim 1, characterized in that: a fixing plate (14) is connected between the positioning seat (13) and the mounting tube (12).