CN206449287U - A kind of self-locking mechanical ball-cock assembly - Google Patents

Abstract

The utility model discloses a kind of self-locking mechanical ball-cock assembly, including valve body；Diaphragm seal is provided with the inside of the valve body, body cavity is formed with admission chamber, control chamber and goes out sap cavity；The admission chamber is in the same side of diaphragm seal with going out sap cavity；The control chamber is provided with the through hole with admission chamber UNICOM；The control chamber is provided with relief port；The relief port is turned on and off, and diaphragm seal is moved towards control chamber or towards sap cavity movement is gone out, is constituted admission chamber with going out the closing of sap cavity or communicating.The utility model admission chamber is in the eccentric side of diaphragm seal, and goes out the area that the area of sap cavity is more than admission chamber, valve body is adapted to bigger flow, and make the pressure difference of the both sides of diaphragm seal bigger, sealing is more beneficial for, also makes diaphragm seal sensitiveer, can fast shut-off feed liquor；When water level arrival maximum water level finger lock water inlet is safer.The utility model also has the advantages that flow is big, simple in construction, self-locking is reliable, easy for installation.

Description

A kind of self-locking mechanical ball-cock assembly

Technical field

The utility model is related to valving field, more specifically refers to a kind of self-locking mechanical ball-cock assembly.

Background technology

At present, fresh water increasingly lacks on the earth, saves water resource into the common recognition of people.Present many water resource equipment In can all use valving, be much to be turned on and off valve to realize by electronic, power supply should be wasted, structure is also increased Complexity.So, the valve that can be achieved with opening and closing by the structure of itself and the combination of hydraulic pressure, using more and more wider It is general, such as ball-cock assembly.

Chinese patent CN200920126018.0 discloses a kind of Self-locking floating-ball valve, and water outlet is provided with the bottom of valve body Mouthful, the delivery port is communicated with the valve pocket of valve body, and annular boss, the endoporus of annular boss and entering for valve body front end are provided with valve pocket The mouth of a river is communicated, and the epithelium being provided with bonnet, the bonnet in control water hole, and the inner chamber and valve body of bonnet is set in the rear end of valve body Between form valve chamber, the valve chamber is connected by the through hole on epithelium with the endoporus of annular boss, is provided with the rear portion of the bonnet Sluicing chamber, the sluicing chamber is communicated by drainage gallery with delivery port；The rear end of sliding block is connected by drive mechanism with ball float, sliding block Front end pass through the rear cavity wall of sluicing chamber, extend into sluicing intracavitary, the glue that slip front is set is stifled can will the sealing of control water hole Firmly.Above-mentioned patent water inlet is positive corresponding with epithelium, and epithelium can bear larger pressure, in frequently opening and closing, is held Fatiguability weares and teares and action failure；Further, ratio of the area and water inlet relative to epithelium relative to the area of epithelium of valve chamber Example is too small, and pressure difference is too small, causes sealing effectiveness poor, does not reach the requirement of big flow.

Further, the mechanical float ball valve majority of controlling water level device is unable to self-locking on the market, and water shutoff majority is to lean on ball float Natural buoyancy water shutoff, causes flow smaller, can not meet demand of the people to flow.And when water level reaches maximum water level Fast shut-off water inlet is still unable to afterwards.

In view of the above-mentioned problems, being necessary a kind of new ball-valve structure of design.

Utility model content

The purpose of this utility model is to overcome the defect of prior art, and there is provided a kind of self-locking mechanical ball-cock assembly.

To achieve the above object, the utility model uses following technical scheme：

A kind of self-locking mechanical ball-cock assembly, including valve body；Diaphragm seal is provided with the inside of the valve body, by body cavity It is formed with admission chamber, control chamber and goes out sap cavity；The admission chamber is in the same side of diaphragm seal with going out sap cavity；The control chamber is set There is the through hole with admission chamber UNICOM；The control chamber is provided with relief port；The relief port is turned on and off, and makes diaphragm seal towards control Chamber moves or towards sap cavity movement is gone out, constitutes admission chamber with going out the closing of sap cavity or communicating.

Its further technical scheme is：Described valve body includes valve seat, and the bonnet being fixedly connected with valve seat；The bonnet Provided with the control assembly being turned on and off for controlled discharge mouth；Through hole and control chamber that the admission chamber is provided with by diaphragm seal UNICOM；The control assembly and ball float part driving coupling.

Its further technical scheme is：Described diaphragm seal is located at the junction of bonnet and valve seat, so that control chamber is located at The side of bonnet；The admission chamber and go out to be provided with dividing plate between sap cavity；The diaphragm seal is located at one end of dividing plate, by admission chamber Separated with going out sap cavity.

Its further technical scheme is：Annular groove is provided with the inside of described valve seat；The diaphragm seal is provided with recessed with annular Groove matches annular protrusion；The annular protrusion of the diaphragm seal is embedded in annular groove, and the clamping block being provided with by bonnet is consolidated Due in valve body.

Its further technical scheme is：Described diaphragm seal includes the annular protrusion located at periphery, is connected in annular protrusion The bending section of the roundabout shape in inner side, and the pressure-bearing portion coupled with bending section；The pressure-bearing portion is located at the position relative with admission chamber Provided with through hole.

Its further technical scheme is：Described control assembly includes being slidably connected the seal bar in bonnet, and located at close Seal two limited blocks of bar；The bonnet is provided with the conical through-hole with control chamber UNICOM；The seal bar is inner logical positioned at taper In hole, outer end is located on the outside of bonnet；The seal bar is provided with sealing ring in conical through-hole contact position；The limited block, which is separated by, to be located at Seal bar outer end；Gap is provided between the conical through-hole and seal bar, to form described relief port.

Its further technical scheme is：Described sealing ring is in the mounting groove that seal bar is provided with；The sealing ring is set There is the slope face matched with conical through-hole inwall；The limited block is clamped in seal bar outer end and is provided with provided with clamping mouthful Fixing groove on.

Its further technical scheme is：The mounting blocks for being used for rotating connection ball float part are provided with the outside of described bonnet；It is described Ball float part is provided with the clamping block being clamped between two limited blocks；The rotating shaft that the ball float part is provided with around mounting blocks decline or on Rise, clamping block drives seal bar to be moved, so that the opening and closing of relief port.

Its further technical scheme is：Also include unloading depression bar assembly located at seal bar end；It is described to unload depression bar assembly bag Fixed seat is included, and is slidably connected and unloads depression bar on the inside of fixed seat；The fixed seat, which is provided with, to be used to lead to through the slip for unloading depression bar Hole；It is described unload depression bar and stop provided with one end be butted on fixed seat, the other end stops the elastic component for being butted on and unloading the depression bar cap that depression bar upper end is provided with； The depression bar lower end of unloading is provided with for spacing stage portion；It is described to unload depression bar with seal bar contact position provided with slope face.

Its further technical scheme is：The valve body is provided with threaded block, to be fixed in the liquid case lid being provided with.

The beneficial effect of the utility model compared with prior art is：The utility model be by with floating ball body driving coupling Seal bar be turned on and off to adjust the relief port of control chamber so that the effect of diaphragm seal pressure difference is by admission chamber and goes out liquid Chamber is separated or UNICOM, and effect to reach this body structure of valve body and fluid pressure realizes that valve body is automatically turned on or closed.This reality The eccentric side of diaphragm seal is in new admission chamber, and goes out the area that the area of sap cavity is more than admission chamber, valve body is adapted to Bigger flow, and make the pressure difference of the both sides of diaphragm seal bigger, sealing is more beneficial for, also makes diaphragm seal sensitiveer, energy Fast shut-off feed liquor；When water level arrival maximum water level finger lock water inlet is safer.The utility model also has that flow is big, structure Simply, reliable, the easy for installation advantage of self-locking.

The utility model is further described with specific embodiment below in conjunction with the accompanying drawings.

Brief description of the drawings

Fig. 1 is a kind of explosive view of self-locking mechanical ball-cock assembly of the utility model；

Fig. 2 is a kind of sectional view of self-locking mechanical ball-cock assembly of the utility model；

Fig. 3 is the utility model a kind of partial sectional view and partial enlarged drawing of self-locking mechanical ball-cock assembly；

Fig. 4 is a kind of partial sectional view of self-locking mechanical ball-cock assembly of the utility model；

Fig. 5 is a kind of sealing ring sectional view of self-locking mechanical ball-cock assembly of the utility model；

Fig. 6 unloads depression bar assembly sectional view for a kind of self-locking mechanical ball-cock assembly of the utility model；

Fig. 7 is a kind of ball float part partial view of self-locking mechanical ball-cock assembly of the utility model；

Fig. 8 is a kind of working view of self-locking mechanical ball-cock assembly of the utility model.

Reference

The diaphragm seal of 10 valve body 11

The annular protrusion of 111 through hole 112

1121 backstop grooves

The pressure-bearing portion of 113 bending section 114

The dividing plate of 12 admission chamber 121

The relief port of 13 control chamber 131

14 go out the pilot hole of sap cavity 15

The valve seat of 16 threaded block 17

The bonnet of 171 annular groove 18

The stop lug of 181 clamping block 1811

The mounting blocks of 182 conical through-hole 183

The rotating shaft of 184 clamping block 185

The seal bar of 19 control assembly 191

The clamping of 192 limited block 1921 mouthful

The mounting groove of 1911 fixing groove 1912

The slope of 193 sealing ring 1931 face

The floating ball body of 20 ball float part 21

The connecting seat of 22 connecting rod 23

The liquid case lid of 24 contiguous block 30

40 unload the fixed seat of depression bar assembly 41

411 slide through hole

42 unload the stage portion of depression bar 421

The elastic component of 43 depression bar cap 44

Embodiment

In order to more fully understand technology contents of the present utility model, with reference to specific embodiment to skill of the present utility model Art scheme is further described and illustrated, but is not limited to this.

As shown in Figures 1 to 8, a kind of self-locking mechanical ball-cock assembly, including valve body 10, the ball float being connected with valve body 10 Part 20.The inner side of valve body 10 is provided with diaphragm seal 11, and the inner chamber of valve body 10 is formed with into admission chamber 12, control chamber 13 and goes out sap cavity 14. Control chamber 13 is provided with the pilot hole 15 with the UNICOM of admission chamber 12.Control chamber 13 is provided with relief port 131.The sinking of ball float part 20 or on It is floating be turned on and off with relief port 131 it is associated.Valve body 10 is provided with threaded block 16, to be fixed in the liquid case lid 30 being provided with. Admission chamber 12 is in the same side of diaphragm seal 11 with going out sap cavity 14.Relief port 111 is turned on and off, and makes diaphragm seal 11 towards control chamber 13 movements are moved towards sap cavity 14 is gone out, and constitute admission chamber 12 with going out the closing of sap cavity 14 or communicating.

Wherein, as shown in Figures 2 to 4, valve body 10 includes valve seat 17, and the bonnet 18 being fixedly connected with valve seat 17.Valve seat 17 and bonnet 18 be bolted connection.Relief port 131 is on bonnet 18, and bonnet 18 is provided with for controlled discharge mouthful 131 control assemblies 19 being turned on and off.The through hole 111 that admission chamber 12 is provided with by diaphragm seal 11 (is above-mentioned pilot hole 15) with the UNICOM of control chamber 13.Control assembly 19 and the driving coupling of ball float part 20.

Diaphragm seal 11 is located at the junction of bonnet 18 and valve seat 17, and by control chamber 13 and admission chamber 12, to go out sap cavity 14 mutual Separate, and make control chamber 13 be located at bonnet 18 side, admission chamber 12, go out sap cavity 14 be located at valve seat 17 side.Further, feed liquor Chamber 12 and go out to be provided with dividing plate 121 between sap cavity 14.Diaphragm seal 11 is located at one end of dividing plate 121, by admission chamber 12 with going out sap cavity 14 separate.Moreover, admission chamber 12 is located at the eccentric side of diaphragm seal 11, to reduce contact surface of the admission chamber 12 to diaphragm seal 11 Product, increases pressure difference, so that diaphragm seal 11 is more closely attached on dividing plate 121, is conducive to sealing.Meanwhile, the area of admission chamber 12 is less than The area of sap cavity 14, the also area of control chamber 13 are more than or equal to admission chamber 12 and go out the area sum of sap cavity 14, are also to have Beneficial to the pressure difference of the both sides of diaphragm seal 11, while making the sealing effectiveness of diaphragm seal 11 higher, also increase being quick on the draw for diaphragm seal 11 Property.

Specifically, the inner side of valve seat 17 is provided with annular groove 171, diaphragm seal 11 is provided with to match annular with annular groove 171 Projection 112.The annular protrusion 112 of diaphragm seal 11 is embedded in annular groove 171, and the clamping block 181 being provided with by bonnet 18 It is fixed in valve body, so as to control chamber 13 and admission chamber 12 and go out sap cavity 14 and be spaced from each other, and control chamber 13 is located at bonnet 18 Side.

It is preferred that, clamping block 181 is bordering on the inner side of control chamber 13 and is provided with stop lug 1811, and is provided with annular protrusion 112 Backstop groove 1121 match, prevent diaphragm seal 11 under stress, come off due to deformation.

More specifically, as shown in figure 5, diaphragm seal 11 includes the above-mentioned annular protrusion 112 located at periphery, it is connected in convex annular Play the bending section 113 of the 112 roundabout shapes in inner side, and the pressure-bearing portion 114 coupled with bending section 113.Through hole 111 is located at pressure-bearing portion 113 and positioned at the position relative with admission chamber 12.The bending section 113 of roundabout shape is conducive to obtaining bigger deformation, and returns Multiple power is also stronger.

Wherein, as shown in figure 4, control assembly 19 includes being slidably connected the seal bar 191 in bonnet 18, and located at seal bar 191 two limited blocks 192.Bonnet 18 is provided with the conical through-hole 182 with the UNICOM of control chamber 13.Seal bar 192 is inner to be located at cone In shape through hole 182, outer end is located at the outside of bonnet 18.Seal bar 191 is provided with sealing ring 193 in the contact position of conical through-hole 182.Two Limited block 192 is separated by located at the outer end of seal bar 191.Gap is provided between conical through-hole 182 and seal bar 191, it is described to be formed Relief port 131.

Specifically, sealing ring 193 is in the fixing groove 1911 that seal bar 191 is provided with.Sealing ring 193 is provided with logical with taper The slope face 1931 that the inwall of hole 182 matches.Limited block 192 is provided with clamping mouthful 1921, and clamping mouthful and the peripheral hardware of seal bar 191 Have on mounting groove 1912.

Specifically, the outside of bonnet 18 is provided with the mounting blocks 183 for being used for rotating connection ball float part 20.Ball float part 20 is provided with clamping Clamping block 184 between two limited blocks 192.Ball float part 20 is down or up around the rotating shaft 185 that mounting blocks 183 are provided with, band Dynamic sealing bar 191 is moved, so that the opening and closing of relief port 131.

Wherein, as shown in fig. 6, also including unloading depression bar assembly 40 located at the end of seal bar 191.Unloading depression bar assembly 40 includes The fixed seat 41 being fixed in liquid case lid 30, and be slidably connected and unload depression bar 42 in the inner side of fixed seat 41.Fixed seat 41 is provided with use In through the slip through hole 411 for unloading depression bar 42.Unload depression bar 42 and stop provided with one end and be butted on fixed seat 41, the other end, which stops being butted on, unloads depression bar The elastic component 44 for the depression bar cap 43 that 42 upper ends are provided with.It is preferred that, elastic component 44 is spring.The lower end of depression bar 42 is unloaded to be provided with for spacing Stage portion 421.Unload depression bar 42 and be provided with rake 422 with the contact position of seal bar 192, rake 422 is used to promote seal bar 192 It is mobile, seal bar 192 is separated with conical through-hole 182, relief port 131, which is opened, carries out release.

As shown in fig. 7, ball float part 20 includes floating ball body 21, and the connecting rod 22 coupled with floating ball body 21, and and coupling bar The connecting seat 23 of 21 connections.Above-mentioned clamping block 184 is fixed on connecting seat 23, and connecting seat 23 is additionally provided with and mounting blocks 183 The contiguous block 24 of connection.The buoyancy of floating ball body 21 is sent to seal bar 192 by the lever of connecting rod 22, with less buoyancy just Seal bar 192 can be driven to move, to realize the closing of relief port 131.

A kind of self-locking method of ball-cock assembly, including the following course of work：

When entering liquid status, liquid is flowed into from admission chamber 12, and flows into control by the through hole 111 being provided with diaphragm seal 11 Chamber 13；Relief port 131 is opened under the Action of Gravity Field of ball float part 20, and the liquid of control chamber 13 flows out from relief port 131, so that feed liquor Chamber 12 is moved with the formation pressure difference of control chamber 12, diaphragm seal 11 towards the direction of control chamber 13, and admission chamber 12 is with going out the UNICOM of sap cavity 14, liquid Flowed out from admission chamber 12 by going out sap cavity 14；During self-locking state, ball float part 20 rises, so that relief port 131 is closed, admission chamber 12 With the pressure differential collapses of control chamber 13, diaphragm seal 11 recovers deformation, and diaphragm seal 11 is moved in the opposite direction, by admission chamber 12 with going out sap cavity 13 separate, liquid cutout；During released state, ball float part 20 declines so that relief port 131 is opened, and the liquid in control chamber 13 flows out And release, admission chamber 12 and the formation pressure difference of control chamber 13, diaphragm seal 11 is towards the movement of the direction of control chamber 13, and admission chamber 12 is with going out liquid The UNICOM of chamber 14, liquid flows out from admission chamber 12 through going out sap cavity 14.

Specifically, control chamber 12 is provided with the seal bar 191 that be connected with ball float part 20, with the unlatching of controlled discharge mouth 131 or Close.Ball float part 20 rises with liquid level, drives seal bar 191 to be moved backward, so that relief port 131 is closed, the pressurize of control chamber 13； Ball float part 20 declines with liquid level, drives seal bar 191 to travel forward, so that relief port 131 is opened, the release of control chamber 13.

More specifically, liquid condition is normally entered：Start into (when floating ball body 20 does not float), liquid is from valve body 10 during liquid The hole in face enters the admission chamber 12 of valve body 10, and liquid can enter the control chamber 13 on right side by the through hole 111 of diaphragm seal 11, because floating Spheroid 20 pushes away seal bar 191 to the left side by the gravity of itself, sealing ring 193 is left the conical through-hole of the centre of bonnet 18 182, the liquid of the right side admission chamber 12 of diaphragm seal 11 can be by seal bar 191 and the gap of the middle conical through-hole 182 of bonnet 18 (i.e. relief port 131) flows to fluid box, and the fluid pressure of control chamber 13 on the right side of diaphragm seal 11 is less than the left side admission chamber of diaphragm seal 11 12 fluid pressure, so diaphragm seal 11 moves right so that admission chamber 12 and going out sap cavity 14 and being connected as a single entity, most liquid is just Sap cavity 14 is flowed through out from admission chamber 12, fluid box is then flowed into.

Block liquid or self-locking state：When liquid position reaches highest liquid bit line (floating ball body 20 to float), flow into The liquid of sap cavity 12 can enter the control chamber 13 on right side by the through hole 111 of diaphragm seal 11, because liquid position is risen high floating ball body 20, with Rotated up centered on rotating shaft 185, seal bar 191 is drawn towards back makes the middle conical through-hole 182 of sealing ring 193 and bonnet 18 Gap (i.e. relief port 131) it is less and less until be adjacent to completely, the fluid pressure of the control chamber 13 on the right side of diaphragm seal 11 becomes big Seal bar 191 and sealing ring 193 are pushed away will to the right, until (i.e. relief port 131 is closed) is shut into gap, and diaphragm seal 11 is received Pressure to control chamber 13 is pushed away to the left, until diaphragm seal 11 is adjacent to admission chamber 12 and gone out on the dividing plate 121 of sap cavity 14, so that will Admission chamber 12 and go out sap cavity 14 and separate, liquid cutout.

Release or released state：After liquid position drops to below highest liquid bit line, pressing is unloaded depression bar 42 and resetted so that The inclined plane part 1931 for unloading depression bar 42 to the left pushes away seal bar 191, sealing ring 193 is left the middle conical through-hole 182 of bonnet 18, The liquid of the control chamber 13 on the right side of diaphragm seal 11 can pass through the gap of the middle conical through-hole 182 of seal bar 191 and bonnet 18 (i.e. Relief port 131) fluid box is flowed to, the fluid pressure of 11 right side control chamber of diaphragm seal 13 is less than the admission chamber 12 in the left side of diaphragm seal 11 Fluid pressure, so diaphragm seal 11 moves right so that admission chamber 12 and go out sap cavity 14 and be connected as a single entity, most liquid is just from entering Sap cavity 12 flows through out sap cavity 14 and flows to fluid box.

In summary, the utility model is the relief port that control chamber is adjusted by the seal bar with floating ball body driving coupling Be turned on and off so that the effect of diaphragm seal pressure difference admission chamber and will go out separating or UNICOM for sap cavity, to reach valve body sheet The effect of body structure and fluid pressure realizes that valve body is automatically turned on or closed.The utility model admission chamber is in the bias of diaphragm seal Side, and go out the area that the area of sap cavity is more than admission chamber, valve body is adapted to bigger flow, and make the both sides of diaphragm seal Pressure difference it is bigger, be more beneficial for sealing, also make diaphragm seal sensitiveer, can fast shut-off feed liquor；When water level reaches highest water Bit line finger lock water inlet is safer.The utility model also has the advantages that flow is big, simple in construction, self-locking is reliable, easy for installation.

It is above-mentioned that technology contents of the present utility model are only further illustrated with embodiment, in order to which reader is easier to understand, But embodiment of the present utility model is not represented and is only limitted to this, and any technology done according to the utility model extends or recreated, By protection of the present utility model.Protection domain of the present utility model is defined by claims.

Claims (10)

1. a kind of self-locking mechanical ball-cock assembly, it is characterised in that including valve body；Diaphragm seal is provided with the inside of the valve body, with Body cavity is formed with admission chamber, control chamber and goes out sap cavity；The admission chamber is in the same side of diaphragm seal with going out sap cavity；Institute Control chamber is stated provided with the through hole with admission chamber UNICOM；The control chamber is provided with relief port；The relief port is turned on and off, and is made close Mounting moves towards control chamber or towards sap cavity movement is gone out, constitutes admission chamber with going out the closing of sap cavity or communicating.

2. self-locking mechanical ball-cock assembly according to claim 1, it is characterised in that described valve body includes valve seat, And the bonnet being fixedly connected with valve seat；The bonnet, which is provided with, is used for the control assembly that controlled discharge mouth is turned on and off；It is described enter Through hole and control chamber UNICOM that sap cavity is provided with by diaphragm seal；The control assembly and ball float part driving coupling.

3. self-locking mechanical ball-cock assembly according to claim 2, it is characterised in that described diaphragm seal is located at bonnet With the junction of valve seat so that control chamber be located at bonnet side；The admission chamber and go out to be provided with dividing plate between sap cavity；It is described close Mounting is located at one end of dividing plate, and admission chamber is separated with going out sap cavity.

4. self-locking mechanical ball-cock assembly according to claim 2, it is characterised in that ring is provided with the inside of described valve seat Connected in star；The diaphragm seal is provided with to match annular protrusion with annular groove；The annular protrusion of the diaphragm seal is embedded in annular Groove, and the clamping block being provided with by bonnet is fixed in valve body.

5. self-locking mechanical ball-cock assembly according to claim 1, it is characterised in that described diaphragm seal includes being located at The annular protrusion of periphery, is connected in the bending section of roundabout shape on the inside of annular protrusion, and the pressure-bearing portion coupled with bending section；It is described Pressure-bearing portion is located at the position relative with admission chamber and is provided with through hole.

6. self-locking mechanical ball-cock assembly according to claim 2, it is characterised in that described control assembly includes sliding The dynamic seal bar for being connected in bonnet, and located at two limited blocks of seal bar；The bonnet is provided with the taper with control chamber UNICOM Through hole；Described seal bar the inner is located in conical through-hole, and outer end is located on the outside of bonnet；The seal bar is in conical through-hole contact position Provided with sealing ring；The limited block is separated by located at seal bar outer end；Gap is provided between the conical through-hole and seal bar, with shape Into described relief port.

7. self-locking mechanical ball-cock assembly according to claim 6, it is characterised in that described sealing ring is located at sealing In the mounting groove that bar is provided with；The sealing ring is provided with the slope face matched with conical through-hole inwall；The limited block is provided with Clamping mouthful, and be clamped in the fixing groove that seal bar outer end is provided with.

8. self-locking mechanical ball-cock assembly according to claim 6, it is characterised in that provided with use on the outside of described bonnet In the mounting blocks of rotation connection ball float part；The ball float part is provided with the clamping block being clamped between two limited blocks；The ball float Part is down or up around the rotating shaft that mounting blocks are provided with, and clamping block drives seal bar to be moved, so that the opening and closing of relief port.

9. self-locking mechanical ball-cock assembly according to claim 6, it is characterised in that also including located at seal bar end Unload depression bar assembly；The depression bar assembly of unloading is including fixed seat, and is slidably connected and unloads depression bar on the inside of fixed seat；The fixation Seat, which is provided with, to be used for through the slip through hole for unloading depression bar；It is described unload depression bar and stop provided with one end be butted on fixed seat, the other end, which stops being butted on, to be unloaded The elastic component for the depression bar cap that depression bar upper end is provided with；The depression bar lower end of unloading is provided with for spacing stage portion；It is described unload depression bar with Seal bar contact position is provided with slope face.

10. self-locking mechanical ball-cock assembly according to claim 1, it is characterised in that the valve body is provided with screw thread Seat, to be fixed in the liquid case lid being provided with.