CN117823645A - Pilot-operated pneumatic control angle seat valve - Google Patents

Abstract

The invention relates to the technical field of valves, in particular to a pilot type pneumatic control angle seat valve, which aims at the problems that a sealing gasket is seriously worn and the sealing performance is reduced in the long term and comprises a valve body, wherein a first through hole and a second through hole are respectively arranged at two sides of the lower end of the valve body, a valve hole is arranged between the first through hole and the second through hole, a movable valve rod is arranged on the inner wall of the upper end of the valve body, a sealing disc matched with the valve hole is arranged at the bottom end of the valve rod, an encryption sheet capable of moving up and down is arranged at the upper end of the disc body, a flexible sealing ring is further arranged on the disc body, and the encryption sheet can form a structure that the flexible sealing ring expands outwards when moving downwards; when the thread cylinder rotates, a structure that a plurality of outer bosses fold inwards to clamp and fix the hose can be formed; the sealing disk replaces a valve core sealing gasket, so that the wear resistance of the valve core is improved, the sealing performance is further improved, the angle seat valve can be quickly connected with a hose in a communicating way, and the valve is convenient to install, good in sealing performance and convenient to detach and maintain in the later period.

Description

Pilot-operated pneumatic control angle seat valve

Technical Field

The invention relates to the technical field of valves, in particular to a pilot type pneumatic control angle seat valve.

Background

The angle seat valve maintains the flow rate to save space. The guide angle seat valve is operated by adopting a single-acting pneumatic actuator with spring safety protection, and is normally opened or normally closed when in use, and the angle seat valve is widely applied to short-time frequent start and has the characteristics of sensitive response, accurate action and the like; the method is widely used in the related fields of chemical industry, filling industry, printing and dyeing textile industry, rubber industry, pharmaceutical industry, water treatment industry, environmental protection industry, gas industry, high-temperature sterilization, foaming machinery and the like.

The defects of easy loss and low service life of the valve caused by frequent starting are provided as the following publication numbers in the prior art: CN212273238U, name: although the pilot type pneumatic control angle seat valve solves the problems of the traditional pneumatic control angle seat valve by realizing a pneumatic control valve with smaller pneumatic control force on the basis of not increasing the volume of a cylinder, when the valve is frequently started, the valve core sealing gasket and the valve hole are continuously contacted and collided, the sealing gasket is seriously worn, and the sealing performance is reduced for a long time; in addition, the inlet and the outlet of the conventional angle seat valve are mostly connected by screw threads, welded or flange when being connected with a hard pipe, and are usually fixed by gluing or binding, so that the conventional angle seat valve has a plurality of defects of complicated installation, poor sealing performance and inconvenience in later disassembly and maintenance when being connected with a hose; to this end, a pilot operated pneumatically controlled angle seat valve is designed to solve the above-mentioned problems.

Disclosure of Invention

Aiming at the defects in the background technology, the invention provides the pilot pneumatic control angle seat valve, the sealing disc replaces the valve core sealing gasket, the wear resistance of the valve core is improved, the sealing performance is further improved, the angle seat valve can be quickly connected with a hose in a communicating way, the installation is convenient, the sealing performance is good, the later disassembly and the maintenance are convenient, and the problems in the background technology are effectively solved.

The technical scheme adopted by the invention for solving the problems is as follows:

the pilot type pneumatic angle seat valve comprises a valve body, wherein a first through hole and a second through hole are respectively formed in two sides of the lower end of the valve body, a valve hole is formed between the first through hole and the second through hole, a movable valve rod is arranged on the inner wall of the upper end of the valve body, a sealing disc matched with the valve hole is arranged at the bottom end of the valve rod, the sealing disc comprises a disc body, an encryption sheet capable of moving up and down is arranged at the upper end of the disc body, a flexible sealing ring is further arranged on the disc body, and a structure that the flexible sealing ring expands outwards can be formed when the encryption sheet moves downwards; the hose fixing device comprises an inner barrel and an outer barrel, wherein a plurality of outer convex seats are respectively arranged on the inner wall of the inner barrel, rotatable thread barrels are respectively arranged on the inner wall of the outer barrel, and a structure that the outer convex seats fold inwards to clamp and fix the hose can be formed when the thread barrels rotate.

The encrypting sheet is slidably connected to the outer surface of the valve rod, the disc body is fixedly connected to the lower end surface of the valve rod, the first spring matched with the encrypting sheet is sleeved at the lower end of the outer surface of the valve rod, a plurality of arc-shaped expanding plates which are uniformly distributed are further arranged at the upper end of the disc body, and the structure that the arc-shaped expanding plates move outwards can be formed when the encrypting sheet moves downwards.

The inner side end face of the arc-shaped expansion plate is respectively provided with an inner expansion plate, the inner wall of the upper end of the plate body is fixedly connected with a plurality of supporting seats, the inner expansion plates are respectively and slidably connected with the corresponding supporting seats, the inner expansion plates are respectively provided with a first chute, the lower end surfaces of the encryption plates are respectively and fixedly connected with a plurality of first sliding pins matched with the first chute, and the flexible sealing rings are arranged at the periphery of the arc-shaped expansion plates.

The inner cylinder is fixedly connected to the outer surfaces of the corresponding first through hole and the second through hole respectively, the outer cylinder is fixedly connected to the end face of one side of the inner cylinder respectively, the threaded cylinder is connected to the inner wall of the corresponding outer cylinder in a threaded manner respectively, the inner wall of the bottom end of the inner cylinder is fixedly connected with the sealing cylinder respectively, a plurality of elastic pieces which are uniformly distributed are fixedly connected to the end face of one side of the sealing cylinder respectively, the outer convex seats are fixedly connected to the corresponding elastic pieces respectively, and the inner concave rings matched with the outer convex seats are fixedly connected to the end face of one side of the threaded cylinder respectively.

The inner wall of the outer convex seat is fixedly connected with a plurality of ratchet rings respectively.

And a plurality of conical sealing rings are fixedly connected to the inner wall of the sealing cylinder respectively.

The inner wall of the threaded cylinder is respectively provided with a locking device, the locking devices respectively comprise a supporting cylinder fixedly connected with the threaded cylinder, the inner wall of the supporting cylinder is provided with a connecting cylinder which can move inwards or outwards and can rotate, and the connecting cylinder can form a structure for limiting the threaded cylinder to rotate when moving outwards.

The inner wall of the supporting cylinder is respectively and slidably connected with a connecting ring, the connecting cylinder is respectively and fixedly connected on the outer side end face of the connecting ring, the inner wall of the bottom end of the supporting cylinder is respectively provided with a reset spring matched with the connecting ring, the middle part of the outer surface of the connecting cylinder is respectively and fixedly connected with a single rack, and the inner wall of the outer cylinder is respectively provided with an inner gear ring meshed with the single rack.

The outer surface of the connecting cylinder is fixedly connected with two centrally symmetrical trapezoidal wedges respectively, the upper end of the outer surface of the supporting cylinder is provided with two centrally symmetrical extension seats respectively, the outer end surfaces of the extension seats are respectively and slidably connected with special-shaped clamping seats, the special-shaped clamping seats are respectively provided with short inclined surfaces matched with the trapezoidal wedges, the outer end surfaces of the extension seats are also fixedly connected with L-shaped seats respectively, and the inner walls of the L-shaped seats are respectively fixedly connected with second springs matched with the special-shaped clamping seats.

The special-shaped clamping seats are also respectively provided with long inclined planes matched with the trapezoid wedges, the inner walls of the L-shaped seats are respectively and slidably connected with wedge-shaped clamping blocks, the outer side end surfaces of the two special-shaped clamping seats are respectively and fixedly connected with clamping hooks matched with the wedge-shaped clamping blocks, the inner walls of the L-shaped seats are respectively provided with third springs matched with the wedge-shaped clamping blocks, the outer side end surfaces of the L-shaped seats are respectively and slidably connected with wedge-shaped sliding blocks matched with the trapezoid wedges, the outer side ends of the two wedge-shaped sliding blocks are respectively provided with an extension plate, the extension plates are respectively provided with second inclined slots, and the outer side end surfaces of the wedge-shaped clamping blocks are respectively and fixedly connected with cross pins matched with the second inclined slots; the outer side end surfaces of the L-shaped seats are fixedly connected with T-shaped connecting seats respectively, the annular gears are rotationally connected to the upper ends of the two T-shaped connecting seats, and the annular gears are respectively and slidably connected to the inner wall of the outer cylinder.

Compared with the prior art, the invention has the following advantages:

when the valve is used, through the matching of the disc body, the encryption piece and the flexible sealing gasket, when gas reaches the encryption piece from the first through hole, namely, the upper end and the lower end of the encryption piece form air pressure difference under the action of the air pressure, the encryption piece can move downwards, and the corresponding flexible sealing ring is driven to expand outwards when the encryption piece moves downwards, namely, the sealing piece is tightly attached to the inner wall of the valve hole, so that the sealing effect is enhanced, the sealing disc replaces the valve core sealing gasket, the wear resistance of the valve core is improved, and the sealing performance is further improved; when the angle seat valve is connected with the hose, through the hose fixing device, namely the inner cylinder, the outer convex seat and the threaded cylinder, when the hose is inserted into the corresponding first port and second port, the rotatable threaded cylinder is arranged, so that the outer convex seat can be folded inwards to clamp and fix the hose, the software is clamped and fixed, the sealing performance is good under the wrapping and clamping of the outer convex seat, the angle seat valve can be connected with the hose rapidly, and the installation is convenient, the sealing performance is good, and the later disassembly and maintenance are convenient.

Drawings

Fig. 1 is an isometric view of a pilot operated angle seat valve of the present invention.

Fig. 2 is a cross-sectional view of a valve body of a pilot operated angle seat valve of the present invention.

Fig. 3 is a cross-sectional view of a disc of a pilot operated angle seat valve of the present invention.

Fig. 4 is an exploded view of a sealing disc of a pilot operated angle seat valve of the present invention.

Fig. 5 is a cross-sectional view of an outer cylinder of a pilot operated angle seat valve of the present invention.

Fig. 6 is a schematic view of the installation of the concave ring of the pilot type pneumatic angle seat valve.

Fig. 7 is a schematic view of the installation of the outer boss of the pilot-operated angle seat valve according to the present invention.

Fig. 8 is a schematic installation diagram of a connecting cylinder of a pilot-operated angle seat valve according to the present invention.

Fig. 9 is a cross-sectional view of a thread cylinder of a pilot operated angle seat valve of the present invention.

Fig. 10 is a cross-sectional view of a support cylinder of a pilot operated angle seat valve of the present invention.

Fig. 11 is a schematic diagram of the installation of a special-shaped clamping seat of a pilot-operated pneumatic angle seat valve.

Fig. 12 is a schematic diagram of the hook installation of a pilot pneumatic angle seat valve according to the present invention.

Reference numerals in the drawings: 1-valve body, 2-controller, 3-seal spring, 4-shaft sleeve seal seat, 5-valve rod, 6-first through opening, 7-second through opening, 8-seal disk, 9-encryption piece, 10-encryption shaft sleeve, 11-flexible seal ring, 12-arc expansion plate, 13-inward extension plate, 14-first chute, 15-first slide pin, 16-disk body, 17-support seat, 18-first spring, 19-inner cylinder, 20-outer cylinder, 21-seal cylinder, 22-concave ring, 23-outer convex seat, 24-elastic piece, 25-conical seal ring, 26-ratchet ring, 27-chamfer, 28-handle, 29-connecting cylinder, 30-threaded cylinder, 31-support cylinder, 32-connecting ring, 33-reset spring, 34-extension seat, 35-ring, 36-single rack, 37-trapezoidal wedge block, 38-L-shaped seat, 39-T-shaped connecting seat, 40-special-shaped clamping seat, 41-long inclined surface, 42-short inclined surface, 43-second spring, 44-45-wedge plate, 45-second inclined surface, 46-inclined surface, 48-wedge pin, 48-third slide plate, 48-wedge spring, 48-47-shaped slide plate, and third clamp.

Detailed Description

The following are specific embodiments of the present invention, and the technical solutions of the present invention are further described with reference to the accompanying drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1-12, the invention provides a pilot pneumatic control angle seat valve, which comprises a valve body 1, wherein a first through hole 6 and a second through hole 7 are respectively arranged on two sides of the lower end of the valve body 1, a valve hole is arranged between the first through hole 6 and the second through hole, a movable valve rod 5 is arranged on the inner wall of the upper end of the valve body 1, a sealing disc 8 matched with the valve hole is arranged at the bottom end of the valve rod 5, the sealing disc 8 comprises a disc body 16, an encryption sheet 9 capable of moving up and down is arranged at the upper end of the disc body 16, a flexible sealing ring 11 is further arranged on the disc body 16, and the structure that the flexible sealing ring 11 expands outwards can be formed when the encryption sheet 9 moves downwards; the first port 6 and the second port 7 are respectively provided with a hose fixing device, the hose fixing device respectively comprises an inner barrel 19 and an outer barrel 20, the inner wall of the inner barrel 19 is respectively provided with a plurality of outer convex seats 23, the inner wall of the outer barrel 20 is respectively provided with a rotatable thread barrel 30, and when the thread barrel 30 rotates, a structure that the outer convex seats 23 fold inwards to clamp and fix a hose can be formed.

As shown in fig. 1-7, the interior of the valve body 1 is hollow and is used for mounting various parts, the upper end of the valve body 1 is also provided with a controller 2, a valve rod 5 is mounted on the controller 2, the controller 2 is used for controlling the valve rod 5 to move up and down to open or close the valve, and the controller 2 is in the prior art and is not described in detail; as shown in fig. 2, the inner wall of the upper end of the valve body 1 is also provided with a shaft sleeve sealing seat 4, a valve rod 5 is connected on the inner wall of the shaft sleeve sealing seat 4 in a vertical sliding way, the outer surface of the valve rod 5 is also sleeved with a sealing spring 3 matched with the shaft sleeve sealing seat 4, and the sealing spring 3 is used for extruding the shaft sleeve sealing seat 4 to improve the tightness; through the cooperation of the sealing disc 8 and the valve hole, the valve can be in a one-way closing or normally-closed state when the sealing disc 8 is matched with the valve hole, and the valve is in a normally-open state when the valve rod 5 moves to drive the sealing disc 8 to be separated from the inner wall of the valve hole; when the valve is in a unidirectional closing state, gas flows in from the first through hole 6, cannot flow into the second through hole 7 under the blocking of the sealing disc 8, and when the gas reversely flows in from the second through hole 7, the sealing disc 8 is driven to move upwards under the action of certain air pressure so as to open the valve, namely, the gas flows out from the first through hole 6; in the normally open or normally closed state of the valve, namely the first port 6 and the second port 7 are always communicated or always in an isolated state; the disc body 16 is made of metal, so that the wear resistance is improved, when gas reaches the encryption sheet 9 from the first through hole 6 through the matching of the disc body 16, the encryption sheet 9 and the flexible sealing gasket, namely, the pressure difference is formed at the upper end and the lower end of the encryption sheet 9 under the action of the gas pressure, the encryption sheet 9 can move downwards, and the corresponding flexible sealing gasket 11 is driven to expand outwards when the encryption sheet 9 moves downwards, namely, the sealing gasket is tightly attached to the inner wall of the valve hole, so that the sealing effect is enhanced, the sealing gasket of the valve core is replaced by the sealing disc 8, the wear resistance of the valve core is improved, and the sealing performance is further improved; when the angle seat valve is connected with a hose, through the hose fixing device, namely under the mutual cooperation of the inner cylinder 19, the outer cylinder 20, the outer convex seat 23 and the thread cylinder 30, when the hose is inserted into the corresponding first through hole 6 and the second through hole 7, the rotatable thread cylinder 30 is arranged, so that the outer convex seat 23 can be folded inwards to clamp and fix the hose, the software is clamped and fixed, the sealing performance is good under the wrapping and clamping of the outer convex seat 23, the angle seat valve can be quickly connected with the hose, and the installation is convenient, the sealing performance is good, and the later disassembly and maintenance are convenient.

The encrypting sheet 9 is slidably connected to the outer surface of the valve rod 5, the disc 16 is fixedly connected to the lower end surface of the valve rod 5, a first spring 18 matched with the encrypting sheet 9 is sleeved at the lower end of the outer surface of the valve rod 5, a plurality of arc-shaped expanding plates 12 which are uniformly distributed are further arranged at the upper end of the disc 16, and the structure that the arc-shaped expanding plates 12 move outwards can be formed when the encrypting sheet 9 moves downwards.

As shown in fig. 2-4, the encryption piece 9 is slidably connected to the outer surface of the valve rod 5 up and down, and the inner wall of the encryption piece 9 is also provided with an encryption shaft sleeve 10 for enhancing the tightness; the sealing disc 8 is fixed on the valve rod 5 through the disc 16, and can drive the disc 16, namely the sealing disc 8 to move up and down when the valve rod 5 moves up and down; the first spring 18 always has upward elasticity to the encryption piece 9, one end of the first spring 18 is fixedly connected to the inner wall of the tray 16, and the other end of the first spring 18 is fixedly connected to the encryption piece 9; through the arc that sets up expands board 12, can drive corresponding arc when encrypting piece 9 moves down and expand board 12 to move to outside to compress first spring 18, arc expands board 12 and can extrude flexible sealing washer 11 when moving to outside again, thereby further strengthen sealed effect, when the both ends differential pressure of sealing piece is balanced, first spring 18 can make encrypting piece 9 upwards move reset, arc expands board 12 inwards move the reset under self elasticity.

The inner side end face of the arc-shaped expansion plate 12 is respectively provided with an inner extension plate 13, the inner wall of the upper end of the tray body 16 is fixedly connected with a plurality of supporting seats 17, the inner extension plates 13 are respectively connected to the corresponding supporting seats 17 in a sliding mode, the inner extension plates 13 are respectively provided with a first chute 14, the lower end surfaces of the encryption sheets 9 are respectively fixedly connected with a plurality of first sliding pins 15 matched with the first chute 14, and the flexible sealing rings 11 are arranged at the periphery of the arc-shaped expansion plates 12.

As shown in fig. 4, the flexible sealing ring 11 is embedded in the inner wall of the upper end of the tray body 16, and the flexible sealing ring 11 can be made of rubber material and has a certain elastic deformation function; the inward extending plate 13 can slide back and forth or left and right on the supporting seat 17, and the limiting arc-shaped expansion plate 12 can only move inwards or outwards; through the cooperation of the first slide pin 15 and the first chute 14 that set up, when encryption piece 9, first slide pin 15 down move, can drive corresponding interior extension board 13, arc expand board 12 and move to the outside to extrude flexible sealing washer 11, flexible sealing washer 11 receives and can outwards expand after the extrusion, thereby hugs closely the valve opening inner wall, improves the leakproofness.

The inner cylinder 19 is fixedly connected to the outer surfaces of the corresponding first through hole 6 and the second through hole 7 respectively, the outer cylinder 20 is fixedly connected to one side end surface of the inner cylinder 19 respectively, the threaded cylinder 30 is connected to the inner wall of the corresponding outer cylinder 20 respectively in a threaded manner, the inner wall of the bottom end of the inner cylinder 19 is fixedly connected with the sealing cylinder 21 respectively, a plurality of uniformly distributed elastic sheets 24 are fixedly connected to one side end surface of the sealing cylinder 21 respectively, the outer convex seats 23 are fixedly connected to the corresponding elastic sheets 24 respectively, and the inner concave rings 22 matched with the outer convex seats 23 are fixedly connected to one side end surface of the threaded cylinder 30 respectively.

As shown in fig. 5-7, the inner cylinder 19 and the outer cylinder 20 are fixedly connected to the outer surfaces of the first port 6 and the second port 7; the threaded cylinder 30 is in threaded connection with the outer cylinder 20, so that the threaded cylinder 30 can move inwards or outwards when the threaded cylinder 30 rotates, and the threaded cylinder 30 and the outer cylinder 20 are in threaded connection and have a self-locking function, namely the threaded cylinder 30 does not move inwards or outwards any more when the threaded cylinder 30 does not rotate; the sealing cylinder 21 plays a certain sealing role and can support the elastic sheet 24, under the supporting limit of the elastic sheet 24, the outer convex seat 23 can be at the outermost end in a normal state, and can be folded inwards when being stressed, the outer convex seat 23 and the inner concave ring 22 are installed and shaped as shown in fig. 7, and when the inner concave ring 22 moves inwards, the outer convex seat 23 can be folded inwards to move under the cooperation of the outer convex seat 23, so that the hose is clamped and fixed.

The inner wall of the outer convex seat 23 is fixedly connected with a plurality of ratchet rings 26 respectively.

As shown in fig. 7, the ratchet ring 26 is used for clamping the outer surface of the deformed hose, increasing friction and improving clamping and fixing effects.

The inner wall of the sealing cylinder 21 is fixedly connected with a plurality of conical sealing rings 25 respectively.

As shown in fig. 7, the conical sealing ring 25 is made of rubber material and has a certain elasticity, and can be deformed, and the conical sealing ring 25 is provided with an inclined surface, so that a hose can be conveniently and smoothly inserted into the conical sealing ring 25, and the conical sealing ring 25 has a sealing reinforcing effect; the outer side ports of the first port 6 and the second port 7 are respectively provided with a chamfer 27, and the chamfer 27 is convenient for inserting and sleeving the hose on the outer surfaces of the first port 6 and the second port 7; the hose is inserted into the conical sealing ring 25, and the inner concave ring 22 is moved inwards by driving the threaded cylinder 30, so that the corresponding outer convex seat 23 is folded inwards, the hose is clamped and fixed, and the hose clamping device has a self-locking function when the threaded cylinder 30 does not rotate, namely, the position of the inner concave ring 22 is in a fixed state, and the outer convex seat 23 can be used for stably clamping the hose.

The inner wall of the screw thread cylinder 30 is respectively provided with a locking device, the locking device respectively comprises a supporting cylinder 31 fixedly connected with the screw thread cylinder 30, the inner wall of the supporting cylinder 31 is provided with a connecting cylinder 29 which can move inwards or outwards and can rotate, and the connecting cylinder 29 can form a structure for limiting the screw thread cylinder 30 to rotate when moving outwards.

As shown in fig. 5-10, the supporting cylinder 31 is fixedly connected to the inner wall of the bottom end of the threaded cylinder 30, and the locking device can lock and limit the threaded cylinder 30, so that the locking device can limit the threaded cylinder 30 to rotate when being opened, and can not limit the threaded cylinder 30 to rotate when being closed; the angle seat valve often has operations such as vibration, movement, rotation and the like when working, under an indefinite working state, the threaded cylinder 30 and the outer cylinder 20 can possibly rotate, and the fixing effect of the outer convex seat 23 can be reduced after the threaded cylinder 30 and the outer cylinder 20 rotate, so that the threaded cylinder 30 can not rotate with the outer cylinder 20 in a normal state through the locking device, and the stability of the outer convex seat 23 is improved, namely the clamping effect is improved; when the connecting cylinder 29 moves inwards, the locking device is closed, the rotation of the threaded cylinder 30 is not limited, and the threaded cylinder 30 can rotate to adjust the position of the outer convex seat 23; the clamping of the hose to the outer boss 23 by the locking means provided thereby improves the securing effect.

The inner wall of the supporting cylinder 31 is respectively and slidably connected with a connecting ring 32, the connecting cylinder 29 is respectively and fixedly connected on the outer side end surface of the connecting ring 32, the inner wall of the bottom end of the supporting cylinder 31 is respectively provided with a reset spring 33 matched with the connecting ring 32, the middle part of the outer surface of the connecting cylinder 29 is respectively and fixedly connected with a single rack 36, and the inner wall of the outer cylinder 20 is respectively provided with an inner gear ring 35 meshed with the single rack 36.

As shown in fig. 8-10, a handle 28 is fixedly connected to the upper end of the outer surface of the connecting cylinder 29, and the handle 28 is used for conveniently driving the connecting cylinder 29 to rotate and move inwards or outwards; the connecting rings 32 can slide inwards or outwards on the inner wall of the corresponding supporting cylinder 31 respectively, and the connecting rings 32 and the supporting cylinder 31 are in spline connection, namely when the handle 28, the connecting cylinder 29 and the connecting rings 32 rotate, the corresponding supporting cylinder 31 and the threaded cylinder 30 can be driven to rotate; one end of the reset spring 33 is fixedly connected to the inner wall of the bottom end of the supporting cylinder 31, and the other end of the reset spring is fixedly connected to the connecting ring 32, so that the reset spring 33 always has an outward driving force on the connecting ring 32, and the connecting cylinder 29 is positioned at the outermost end in a normal state, and the single rack 36 is stably meshed with the annular gear 35 and is not separated; the number of the single racks 36 can be one or more, and when the single racks 36 are meshed with the annular gear 35, the connecting cylinder 29, the supporting cylinder 31, the threaded cylinder 30 and the like can be limited to rotate, namely the locking device is in an open state; when the driving handle 28, the connecting cylinder 29, the single rack 36, etc. are moved downward, the single rack 36 is moved downward to be disengaged from the ring gear 35, and at this time, the connecting cylinder 29, the screw cylinder 30, etc. can be rotated, i.e., the locking device is in the closed state.

Two centrally symmetrical trapezoid wedges 37 are fixedly connected to the outer surface of the connecting cylinder 29 respectively, two centrally symmetrical extension seats 34 are arranged at the upper end of the outer surface of the supporting cylinder 31 respectively, special-shaped clamping seats 40 are slidably connected to the outer side end surfaces of the extension seats 34 respectively, short inclined planes 42 matched with the trapezoid wedges 37 are arranged on the special-shaped clamping seats 40 respectively, L-shaped seats 38 are fixedly connected to the outer side end surfaces of the extension seats 34 respectively, and second springs 43 matched with the special-shaped clamping seats 40 are fixedly connected to the inner walls of the L-shaped seats 38 respectively.

As shown in fig. 10-12, the profiled clamping seat 40 can move outwards or inwards on the outer end surface of the extension seat 34, and the extension seat 34, the L-shaped seat 38 and the like play a supporting and limiting role for parts such as the second spring 43 and the like; one end of the second spring 43 is fixedly connected to the L-shaped seat 38, and the other end of the second spring is fixedly connected to the special-shaped clamping seat 40, and the second spring 43 always has inward elasticity on the special-shaped clamping seat 40, so that the special-shaped clamping seat 40 is at the innermost end in a normal state; the outer surface of the screw thread cylinder 30 is respectively provided with a plurality of rectangular grooves for parts such as a single rack 36, a trapezoid wedge block 37, an extension seat 34 and the like to extend to the outer side of the screw thread cylinder 30, and the trapezoid wedge block 37 and the single rack 36 can move on the inner wall of the rectangular grooves; the trapezoid wedge 37, the special-shaped clamping seat 40 and the short inclined surface 42 are installed and shaped as shown in fig. 11, when the connecting cylinder 29 and the trapezoid wedge 37 move inwards, the corresponding single rack 36 is slowly separated from the annular gear 35, when the trapezoid wedge 37 moves inwards to meet the short inclined surface 42, the special-shaped clamping seat 40 moves outwards under the action of the inclined surface contact of the short inclined surface 42 and the trapezoid wedge 37, the second spring 43 is compressed, when the trapezoid wedge 37 moves downwards to the lower end position of the short inclined surface 42, the inclined surface of the trapezoid wedge 37 does not contact the short inclined surface 42 any more, the special-shaped clamping seat 40 moves inwards under the elasticity of the second spring 43 to reset, the lower end plane of the corresponding short inclined surface 42 after the special-shaped clamping seat 40 moves inwards, the trapezoid wedge 37 is prevented from moving outwards, and the single rack 36 and the annular gear 35 are completely separated from each other, namely the locking device is in a state at the moment, the handle 28, the connecting cylinder 29 and the threaded cylinder 30 can be driven to rotate at will, and even if the hose is clamped or released by controlling the outer convex seat 23.

The special-shaped clamping seats 40 are also respectively provided with long inclined planes 41 matched with the trapezoid wedges 37, the inner walls of the L-shaped seats 38 are respectively and slidably connected with wedge-shaped clamping blocks 48, the outer side end surfaces of the two special-shaped clamping seats 40 are respectively and fixedly connected with hooks 49 matched with the wedge-shaped clamping blocks 48, the inner walls of the L-shaped seats 38 are also respectively provided with third springs 50 matched with the wedge-shaped clamping blocks 48, the outer side end surfaces of the L-shaped seats 38 are respectively and slidably connected with wedge-shaped sliding blocks matched with the trapezoid wedges 37, the outer side ends of the two wedge-shaped sliding blocks are respectively provided with extension plates 45, the extension plates 45 are respectively provided with second inclined slots 46, and the outer side end surfaces of the wedge-shaped clamping blocks 48 are respectively and fixedly connected with cross pins 47 matched with the second inclined slots 46; the outer side end surfaces of the L-shaped seats 38 are fixedly connected with T-shaped connecting seats 39 respectively, the inner gear rings 35 are rotationally connected to the upper ends of the two T-shaped connecting seats 39, and the inner gear rings 35 are respectively and slidably connected to the inner wall of the outer cylinder 20.

As shown in fig. 8-12, the inner gear ring 35 and the outer cylinder 20 are in spline connection, i.e. the limiting inner gear ring 35 can move inwards or outwards on the inner wall of the outer cylinder 20 and cannot rotate; through the connection of the annular gear 35 and the T-shaped connecting seat 39, the annular gear 35 can move inwards or outwards along with the threaded cylinder 30, the extending seat 34, the L-shaped seat 38 and the like while the annular gear 35 does not influence the rotation of the connecting cylinder 29, the supporting cylinder 31, the threaded cylinder 30, the extending seat 34 and the L-shaped seat 38, and always keeps the same position with the connecting cylinder 29 and the single rack 36, even if the single rack 36 can be always meshed with the annular gear 35 during upward movement and reset; one end of the third spring 50 is fixedly connected to the wedge-shaped clamping block 48, the other end of the third spring 50 is fixedly connected to the inner wall of the L-shaped seat 38, the third spring 50 always has inward elasticity on the wedge-shaped clamping block 48, so that the wedge-shaped clamping block 48 is at the innermost end in a normal state, and a cross shaft, a clamping hook 49, the wedge-shaped clamping block 48, the wedge-shaped sliding plate 44, the extension plate 45 and the second chute 46 are installed and shaped as shown in fig. 12, and the cross shaft penetrates through the L-shaped seat 38 and is connected to the inner wall of the L-shaped seat 38 in a sliding manner; when the cross shaft moves outwards, the corresponding wedge-shaped clamping block 48 can be driven to move outwards, namely the wedge-shaped clamping block 48 enters the inner wall of the L-shaped seat 38; the wedge-shaped sliding plate 44 can slide on the outer end surface of the L-shaped seat 38, when the wedge-shaped sliding plate 44 slides outwards, the cross shaft and the wedge-shaped clamping block 48 can move outwards through the engagement of the second chute 46 and the cross shaft, and even if the wedge-shaped clamping block 48 enters the inner wall of the L-shaped seat 38; in the closed state of the locking device, that is, the trapezoid wedge 37 moves to the lower end position of the short inclined plane 42, at this time, the threaded cylinder 30 is rotatable, when the threaded cylinder 30 is not required to rotate any more, that is, when the connecting cylinder 29 and the trapezoid wedge 37 need to be moved outwards for resetting, that is, when the corresponding single rack 36 moves outwards to be meshed with the annular gear 35 again, the connecting cylinder 29 and the trapezoid wedge 37 continue to move inwards by continuously pressing the handle 28 inwards, the trapezoid wedge 37 moves inwards and encounters the long inclined plane 41, the irregular clamping seat 40 and the clamping hook 49 move outwards under the action of the trapezoid wedge 37 and the long inclined plane 41, the irregular clamping seat 40 and the clamping hook 49 move outwards farther under the action of the long inclined plane 41, when the clamping hook 49 moves outwards and meets the wedge-shaped clamping block 48, the wedge-shaped clamping block 48 moves outwards and enters the inner wall of the L-shaped seat 38 under the action of the two inclined planes, when the clamping hooks 49 move outwards to the outer side ends of the two wedge-shaped clamping blocks 48, namely after the clamping hooks 49 are separated from contact with the wedge-shaped clamping blocks 48, the wedge-shaped clamping blocks 48 are ejected to the inner wall of the L-shaped seat 38 under the elasticity of the third spring 50, even if the wedge-shaped clamping blocks 48 move inwards to reset, the clamping hooks 49 can be blocked from moving inwards by the wedge-shaped clamping blocks 48, namely the corresponding short inclined planes 42 can not block the trapezoid-shaped wedge blocks 37 any more, at the moment, the handle 28 is loosened, the connecting cylinder 29 and the trapezoid-shaped wedge blocks 37 can move outwards under the elasticity of the reset spring 33 to reset, when the trapezoid-shaped wedge blocks 37 move outwards to meet with the wedge-shaped sliding plate 44, namely the inclined planes of the inner side end surfaces of the trapezoid-shaped wedge-shaped sliding plate 44, the wedge-shaped sliding plate 44 can be driven to move outwards by the elasticity of the reset spring 33, and the cross shaft, the wedge-shaped clamping blocks 48 and the like can be driven to move outwards when the wedge-shaped sliding plate 44 moves outwards, at this time, the wedge-shaped clamping block 48 will enter the inner wall of the L-shaped seat 38, i.e. the clamping hook 49 is not blocked any more, at this time, the clamping hook 49 and the special-shaped clamping seat 40 can be reset to the initial state under the elasticity of the second spring 43, after the handle 28, the connecting cylinder 29, the trapezoid wedge 37, the single rack 36 and the like move upwards to the top end, the single rack 36 is meshed with the annular gear 35, i.e. the limiting connecting cylinder 29 and the threaded cylinder 30 rotate, at this time, the locking device is in the unlocking state, the whole locking device can be recycled, and the operation is convenient and quick.

When the valve is used, through the matching of the disc body 16, the encryption piece 9 and the flexible sealing gasket, when gas reaches the encryption piece 9 from the first through hole 6, namely, under the action of the gas pressure, the air pressure difference is formed at the upper end and the lower end of the encryption piece 9, the encryption piece 9 can move downwards, and when the encryption piece 9 moves downwards, the corresponding flexible sealing ring 11 is driven to expand outwards, namely, the sealing effect is enhanced, the sealing gasket of the valve core is replaced by the sealing disc 8, the wear resistance of the valve core is improved, and the sealing performance is further improved; when the angle seat valve is connected with a hose, through the hose fixing device, namely under the mutual cooperation of the inner cylinder 19, the outer cylinder 20, the outer convex seat 23 and the thread cylinder 30, when the hose is inserted into the corresponding first through hole 6 and the second through hole 7, the rotatable thread cylinder 30 is arranged, so that the outer convex seat 23 can be folded inwards to clamp and fix the hose, the software is clamped and fixed, the sealing performance is good under the wrapping and clamping of the outer convex seat 23, the angle seat valve can be quickly connected with the hose, and the installation is convenient, the sealing performance is good, and the later disassembly and maintenance are convenient.

The specific embodiments described herein are offered by way of example only to illustrate the spirit of the invention. Those skilled in the art may make various modifications or additions to the described embodiments or substitutions, without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims (10)

1. The utility model provides a guide's pneumatic control angle seat valve, includes valve body (1), its characterized in that: the two sides of the lower end of the valve body (1) are respectively provided with a first through hole (6) and a second through hole (7), a valve hole is arranged between the first through hole (6) and the second through hole, the inner wall of the upper end of the valve body (1) is provided with a movable valve rod (5), the bottom end of the valve rod (5) is provided with a sealing disc (8) matched with the valve hole, the sealing disc (8) comprises a disc body (16), the upper end of the disc body (16) is provided with an encryption sheet (9) capable of moving up and down, the disc body (16) is also provided with a flexible sealing ring (11), and the encryption sheet (9) can form a structure of outwards expanding the flexible sealing ring (11) when moving downwards; the hose fixing device is arranged on the first through hole (6) and the second through hole (7) respectively and comprises an inner barrel (19) and an outer barrel (20), a plurality of outer convex seats (23) are arranged on the inner wall of the inner barrel (19) respectively, rotatable thread barrels (30) are arranged on the inner wall of the outer barrel (20) respectively, and when the thread barrels (30) rotate, a structure that the outer convex seats (23) fold inwards to clamp and fix the hose can be formed.

2. A pilot operated angle seat valve as set forth in claim 1, wherein: encryption piece (9) sliding connection is on valve rod (5) surface, and disk body (16) rigid coupling is at valve rod (5) lower extreme surface, and valve rod (5) surface lower extreme cover has first spring (18) with encryption piece (9) matched with, and disk body (16) upper end still is equipped with a plurality of evenly distributed's arc and expands board (12), encryption piece (9) can constitute the structure that arc expanded board (12) moved outwards when moving downwards.

3. A pilot operated angle seat valve as set forth in claim 2 wherein: the inner side end face of the arc-shaped expansion plate (12) is respectively provided with an inner extension plate (13), the inner wall of the upper end of the plate body (16) is fixedly connected with a plurality of supporting seats (17), the inner extension plates (13) are respectively connected to the corresponding supporting seats (17) in a sliding mode, the inner extension plates (13) are respectively provided with a first chute (14), the lower end surface of the encryption piece (9) is respectively fixedly connected with a plurality of first sliding pins (15) matched with the first chute (14), and the flexible sealing ring (11) is arranged at the periphery of the arc-shaped expansion plate (12).

4. A pilot operated angle seat valve as set forth in claim 1, wherein: the inner cylinder (19) is fixedly connected to the outer surfaces of the corresponding first through hole (6) and second through hole (7) respectively, the outer cylinder (20) is fixedly connected to one side end face of the inner cylinder (19) respectively, the threaded cylinder (30) is connected to the inner wall of the corresponding outer cylinder (20) in a threaded mode respectively, the inner wall of the bottom end of the inner cylinder (19) is fixedly connected with the sealing cylinder (21) respectively, a plurality of elastic sheets (24) which are uniformly distributed are fixedly connected to one side end face of the sealing cylinder (21) respectively, the outer convex seat (23) is fixedly connected to the corresponding elastic sheets (24) respectively, and the concave rings (22) matched with the outer convex seat (23) are fixedly connected to one side end face of the threaded cylinder (30) respectively.

5. A pilot operated angle seat valve as set forth in claim 4, wherein: the inner wall of the outer convex seat (23) is fixedly connected with a plurality of ratchet rings (26) respectively.

6. A pilot operated angle seat valve as set forth in claim 4, wherein: the inner wall of the sealing cylinder (21) is fixedly connected with a plurality of conical sealing rings (25) respectively.

7. A pilot operated angle seat valve as set forth in claim 1, wherein: the inner wall of the threaded cylinder (30) is respectively provided with a locking device, the locking devices respectively comprise a supporting cylinder (31) fixedly connected with the threaded cylinder (30), the inner wall of the supporting cylinder (31) is provided with a connecting cylinder (29) which can move inwards or outwards and can rotate, and the connecting cylinder (29) can form a structure for limiting the threaded cylinder (30) to rotate when the locking device moves outwards.

8. A pilot operated angle seat valve as set forth in claim 7, wherein: the inner wall of the supporting cylinder (31) is respectively and slidably connected with a connecting ring (32), the connecting cylinder (29) is respectively and fixedly connected on the outer side end face of the connecting ring (32), the inner wall of the bottom end of the supporting cylinder (31) is respectively provided with a reset spring (33) matched with the connecting ring (32), the middle part of the outer surface of the connecting cylinder (29) is respectively and fixedly connected with a single rack (36), and the inner wall of the outer cylinder (20) is respectively provided with an inner gear ring (35) meshed with the single rack (36).

9. A pilot operated angle seat valve as set forth in claim 8, wherein: two centrally symmetrical trapezoid wedges (37) are fixedly connected to the outer surface of the connecting cylinder (29) respectively, two centrally symmetrical extension seats (34) are arranged at the upper end of the outer surface of the supporting cylinder (31) respectively, special-shaped clamping seats (40) are slidably connected to the outer side end surfaces of the extension seats (34) respectively, short inclined planes (42) matched with the trapezoid wedges (37) are arranged on the special-shaped clamping seats (40) respectively, L-shaped seats (38) are fixedly connected to the outer side end surfaces of the extension seats (34) respectively, and second springs (43) matched with the special-shaped clamping seats (40) are fixedly connected to the inner walls of the L-shaped seats (38) respectively.

10. A pilot operated angle seat valve as set forth in claim 9, wherein: the special-shaped clamping seats (40) are also respectively provided with long inclined planes (41) matched with trapezoid wedges (37), the inner walls of the L-shaped seats (38) are respectively and slidably connected with wedge-shaped clamping blocks (48), the outer side end surfaces of the two special-shaped clamping seats (40) are respectively and fixedly connected with hooks (49) matched with the wedge-shaped clamping blocks (48), the inner walls of the L-shaped seats (38) are also respectively provided with third springs (50) matched with the wedge-shaped clamping blocks (48), the outer side end surfaces of the L-shaped seats (38) are respectively and slidably connected with wedge-shaped sliding blocks matched with the trapezoid wedges (37), the outer side ends of the two wedge-shaped sliding blocks are respectively provided with extension plates (45), the extension plates (45) are respectively provided with second inclined grooves (46), and cross pins (47) matched with the second inclined grooves (46) are respectively and fixedly connected with the outer side end surfaces of the wedge-shaped clamping blocks (48); the outer side end surfaces of the L-shaped seats (38) are fixedly connected with T-shaped connecting seats (39) respectively, the inner gear rings (35) are rotationally connected to the upper ends of the two T-shaped connecting seats (39), and the inner gear rings (35) are respectively and slidably connected to the inner wall of the outer cylinder (20).