CN117189877A - Corrosion-resistant antibiotic stop valve for preventing fluid retention - Google Patents

Abstract

The invention discloses a corrosion-resistant antibiotic stop valve for preventing fluid from being detained, and belongs to the technical field of stop valves. The invention comprises a valve body, an inlet connector is connected between an inlet and an outer pipeline of the valve body, an outlet connector is connected between an outlet and the outer pipeline of the valve body, the inlet connector and the outlet connector have the same structure, the inlet connector comprises a sleeve, a blocking butt joint device is arranged in the middle of the sleeve, connecting components are symmetrically arranged on two sides of the blocking butt joint device, the two groups of connecting components are all positioned in the sleeve, a folding air bag is arranged at one end, close to the outlet, of the interior of the valve body, the axial section profile of a valve core is designed into a deceleration curve such as equal acceleration, the flow is controlled by the opening of the valve core, the flow of antibiotics is stable within the range from the opening to the closing of the valve core, no abrupt change exists, the flexible impact of an antibiotic solution on the valve body in the circulation process is reduced, and the damage of a water hammer to the valve body and the pipeline is reduced.

Description

Corrosion-resistant antibiotic stop valve for preventing fluid retention

Technical Field

The invention relates to the technical field of stop valves, in particular to a corrosion-resistant antibiotic stop valve for preventing fluid from being detained.

Background

The stop valve is an industrial valve for controlling the flow of fluid, is generally used in a fully opened or fully closed pipeline environment, is not suitable for flow regulation, can provide reliable sealing after being fully closed due to the low flow resistance and high sealing performance, and can prevent fluid leakage, so that the stop valve is widely used in industries such as industry, construction, water supply and drainage, petroleum, natural gas and the like, the stop valve used in the antibiotic production process is not different from the common stop valve, but has high sanitary grade requirement, after all, the material of the valve is not a hydrophobic material, liquid residues exist after the valve is cut off, the valve is not cleaned for a long time, so that the valve is damaged by solution in the drug production process, the water hammer and the fluid impact are most easily generated in the working process due to the structural property of the stop valve, the pipeline is damaged after long-time working, and the stop valve is inconvenient to replace each time, and the maintenance is required to be stopped in a whole line, and time and labor are wasted.

Disclosure of Invention

The present invention is directed to a corrosion-resistant antibiotic stop valve for preventing fluid retention, which solves the problems of the prior art.

In order to solve the technical problems, the invention provides the following technical scheme: the utility model provides a prevent corrosion-resistant antibiotic stop valve of fluid retention, includes valve body, outer pipeline, be provided with the valve rod in the valve body, install the valve hand wheel on the valve rod, the other end of valve rod is provided with the case, be connected with the entry connector between the entry of valve body and the outer pipeline, be connected with the exit linkage between the export of valve body and the outer pipeline, the entry connector is the same with the structure of exit linkage, the entry connector includes the sleeve, telescopic mid-mounting has blocks the butt joint ware, it is provided with coupling assembling to block the bilateral symmetry of butt joint ware, two sets of coupling assembling all is located inside the sleeve, the inside one end that is close to the export of valve body is provided with folding gasbag.

Further, the folding gasbag is annular, the gas pocket has been seted up to the inside of valve body, the gas pocket is linked together with folding gasbag, the valve body outside is provided with the air pump, the air pump is linked together through pipeline and gas pocket, the air pump has control system through circuit connection, valve rod coaxial coupling has servo motor, servo motor and control system circuit connection, the valve is closed in the rotatory valve of stop valve accessible manual drive valve hand wheel, also accessible control system control servo motor drive valve rod rotation, thereby reach the effect of controlling the aperture of valve and opening and close or valve, after the valve is closed, the exit of valve body has antibiotic solution, the air pump circular telegram work, impress gas in the folding gasbag, folding gasbag ventilation expansion stretches into inside the valve body, the inner wall of valve body is being laminated to folding gasbag edge, will remain antibiotic solution on the valve body inner wall and push away to the exit direction, get rid of residual solution on the valve body inner wall, prevent the valve body inside long-time long-pending liquid damage valve body, control system is taken out the gas in the folding gasbag through control air pump in the folding trace storage of folding gas along.

Further, each group of connecting components comprises a hollow worm wheel, a worm and a stud, the hollow worm wheel is rotatably arranged in the sleeve, the worm is meshed with the hollow worm wheel for transmission, and one end of the worm is coaxially provided with a worm hand wheel.

Further, the double-screw bolt is located the hollow worm wheel and is close to one side of blocking the butt joint ware, the screw thread has been seted up to telescopic inner wall, double-screw bolt and sleeve threaded connection, and one side that the double-screw bolt is close to hollow worm wheel is provided with the round platform, the round platform runs through hollow worm wheel middle part, is provided with a plurality of lug on the outline of round platform, a plurality of recess has been seted up on the hollow worm wheel inner circle, every lug slidable mounting is in a recess, the one end that the round platform kept away from the double-screw bolt is provided with the rubber pad, and the operating personnel installs and removes the stop valve from outer pipeline and operate through rotating the worm hand wheel, and along with the rotation of worm hand wheel, the worm drives hollow worm wheel rotation, and the hollow worm wheel utilizes the meshing of lug and recess to drive the double-screw bolt rotation, and the double-screw bolt rotation receives the direction of screw thread to reciprocate in the sleeve, only conveys circumference rotation force between lug and the recess, and the lug still slides in the recess after the double-screw bolt removes, and round platform synchronous motion, drives the coupling hook and moves along telescopic axial direction back and forth.

Further, coupling assembling includes a plurality of coupling assembling, changes the shifting ring, a plurality of coupling assembling circumference equipartition sets up in the round platform, annular draw-in groove has been seted up to the one end that the double-screw bolt was kept away from to the round platform, the cross-section of annular draw-in groove is the protruding style of calligraphy, every the coupling assembling is L type, and the one end of every coupling assembling is provided with the fixture block, fixture block slidable mounting is in annular draw-in groove, every the tooth's socket has been seted up on the coupling assembling, it rotates according to installing inside the sleeve to change the shifting ring, changes the inner circle of shifting ring and has also seted up the tooth's socket on the coupling assembling tooth's socket meshes with the tooth's socket of shifting ring inner circle, changes to have frictional force between shifting ring and the sleeve, changes and does not take place to rotate when not receiving external force drive, and the inside position that corresponds every coupling assembling hook is provided with a pair of separation blade, and the coupling assembling is restricted between a pair of separation blade, and the coupling assembling hook can't move along with the round platform when the round platform rotates, and the fixture block slides in annular draw-in the groove.

Further, an annular clamp spring is arranged between the rotating dial ring and the sleeve, a semicircular notch is formed in the outer ring of the rotating dial ring, a dial block is arranged on one side, close to the rotating dial ring, of the hollow worm wheel, the dial block is slidably arranged in the semicircular notch, if the stop valve is damaged and needs to be replaced, an operator rotates the worm hand wheel, the hollow worm wheel drives the stud to rotate, the stud and the round table drive the connecting hook to move outwards of the inlet connector, the connecting hook loosens the inlet of the stop valve, the hollow worm wheel continues to rotate, the dial block pushes one side of the semicircular notch of the rotating dial ring to enable the rotating dial ring to rotate, all the connecting hooks are rotated through the inner tooth grooves, the connecting hooks are moved away from the position where the stop valve is separated, and the dismounting of one side of the outlet of the stop valve uses the same method;

when the stop valve is reinstalled, an operator reverses the worm hand wheel, the shifting block rotates along with the rotation of the hollow worm wheel, one side of the shifting ring is not extruded by the shifting block and is rotated to reset under the action of the annular clamp spring, the stud drives the connecting hook to move towards the inlet connector, the connecting hook hooks the inlet of the stop valve finally, the inlet of the stop valve is tightly pressed on the extension cylinder of the blocking butt joint device, the sealing gasket on the extension cylinder plays the role of preventing leakage, one side of the outlet of the stop valve also uses the same installation method, and the quick connection and replacement of the stop valve and a pipeline are facilitated by arranging the inlet connector and the outlet connector.

Further, the double-screw bolt is link up with the middle part of round platform, the both sides that block the butt joint ware are connected with extension section of thick bamboo, and the both ends that extend the section of thick bamboo are provided with sealed pad, extension section of thick bamboo and the through position sliding seal of double-screw bolt, the inside that blocks the butt joint ware is provided with the flashboard, the upper end rotation of flashboard is provided with the gate-lifting lever, gate-lifting lever and blocking butt joint ware threaded connection, install gate-lifting hand wheel on the gate-lifting lever, gate-lifting hand wheel is located and blocks the butt joint ware outside, no matter change the stop valve or pull down the stop valve from current outer pipeline, need to turn off earlier and block the butt joint ware, the operating personnel utilizes gate-lifting lever to put down the flashboard, makes valve body and outer pipeline cut off the intercommunication, can prevent that air from getting into outer pipeline when changing the valve body, when changing the valve body to other outer pipelines, then need pull down the one end that inlet connector and outlet connector are connected to outer pipeline to prevent that air from getting into the valve body, prevent outside pollution, improve the efficiency of installing and removing, save installation time.

Furthermore, the axial section profile of the valve core is overlapped with the equal acceleration equal deceleration stroke curve, the axial section profile of the valve core is designed into the equal acceleration equal deceleration curve, the flow is controlled by the opening degree of the valve core, the flow of the antibiotics is stable in the range from the opening to the closing of the valve core, no abrupt change exists, the flexible impact of the antibiotic solution on the valve body in the circulation process is reduced, and the damage of the water hammer to the valve body and the pipeline is reduced.

Compared with the prior art, the invention has the following beneficial effects:

1. through setting up folding gasbag in the valve body, the gas stretches into inside the valve body in folding gasbag, and the inner wall of valve body is being laminated to folding gasbag's edge removes, pushes away the antibiotic solution that remains on the valve body inner wall to the export direction, gets rid of the solution that remains on the valve body inner wall, prevents the inside long-time long-pending liquid damage valve body that remains of valve body.

2. Through setting up entry connector and exit linkage, operating personnel only operates worm hand wheel and rotates, alright change the stop valve or pull down the stop valve from current outer pipeline, can prevent that air from getting into outer pipeline when changing the valve body, when changing other outer pipelines with the valve body, then need pull down the one end that entry linkage and exit linkage are connected with outer pipeline to prevent that air from getting into in the valve body, prevent outside pollution, improve and install and remove efficiency, save installation time.

3. The axial section profile of the valve core is designed into a constant acceleration and other deceleration curve, the flow is controlled by the opening degree of the valve core, the flow of the antibiotics is stable in the range from the opening to the closing of the valve core, no abrupt change exists, the flexible impact of the antibiotic solution on the valve body in the circulation process is reduced, and the damage of the water hammer to the valve body and the pipeline is reduced.

Drawings

The accompanying drawings are included to provide a further understanding of the invention and are incorporated in and constitute a part of this specification, illustrate the invention and together with the embodiments of the invention, serve to explain the invention. In the drawings:

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is a schematic view of the structure of a valve body portion of the present invention;

FIG. 3 is a schematic side view of the valve body of the present invention;

FIG. 4 is a schematic view of the transition structure of the coupling hook of the present invention;

FIG. 5 is a schematic side cross-sectional view of the inlet connector of the present invention;

FIG. 6 is a schematic view of the internal structure of the inlet connector of the present invention;

FIG. 7 is a schematic diagram of the profile curve of the valve cartridge of the present invention;

in the figure: 1. a valve body; 2. a valve core; 3. a valve stem; 4. a valve hand wheel; 5. folding the air bag; 6. an inlet connector; 7. an outlet connector; 8. a sleeve; 9. blocking the dockee; 10. a flashboard; 11. a brake lever; 12. a brake starting hand wheel; 13. a stud; 14. a hollow worm wheel; 15. a worm; 16. a worm hand wheel; 17. a rotating dial ring; 18. a connecting hook; 19. an outer pipe.

Detailed Description

The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.

Referring to fig. 1 to 7, the present invention provides the following technical solutions: the utility model provides a prevent corrosion-resistant antibiotic stop valve of fluid retention, including valve body 1, outer pipeline 19, be provided with valve rod 3 in the valve body 1, install valve hand wheel 4 on the valve rod 3, the other end of valve rod 3 is provided with case 2, be connected with entry connector 6 between the entry of valve body 1 and the outer pipeline 19, be connected with exit connector 7 between the export of valve body 1 and the outer pipeline 19, entry connector 6 is the same with exit connector 7's structure, entry connector 6 includes sleeve 8, sleeve 8's mid-mounting has and blocks butt joint 9, block the bilateral symmetry of butt joint 9 and be provided with coupling assembling, both sets of coupling assembling all are located sleeve 8 inside, the one end that is close to the export of valve body 1 is provided with folding gasbag 5, the axial cross-section profile of case 2 and equal acceleration etc. slow down travel curve coincidence, the axial cross-section profile of case 2 is designed into equal acceleration etc. slow down curve, the aperture control flow through case 2, the flow of antibiotic is stable in the range that case 2 opens to the closure, there is not abrupt change, the flexible impact that the antibiotic solution caused to valve body 1 in the in-process of circulation, reduce the injury of water hammer to 1 and pipeline.

The folding gasbag 5 is the ring-shaped, the gas pocket has been seted up in the inside of valve body 1, the gas pocket is linked together with folding gasbag 5, valve body 1 outside is provided with the air pump, the air pump is linked together through pipeline and gas pocket, the air pump has control system through circuit connection, valve rod 3 coaxial coupling has servo motor (not shown in the figure), servo motor and control system circuit connection, the valve is closed to the rotatory valve of stop valve accessible manual drive valve hand wheel 4, also accessible control system control servo motor drive valve rod 3 rotation, thereby reach the effect of controlling the opening and closing of valve or valve, after the valve is closed, the exit of valve body 1 remains antibiotic solution, the air pump circular telegram work, press into gas in the folding gasbag 5, folding gasbag 5 is ventilated and is expanded and is stretched into inside valve body 1, the edge of folding gasbag 5 is moved along the inner wall of valve body 1, will remain the antibiotic solution on the inner wall of valve body 1 to the export direction push away, until folding gasbag 5 is fully expanded, get rid of remaining solution on the inner wall of valve body 1, prevent the inside long-time retaining liquid damage valve body 1, follow control system is with the gas extraction of folding gasbag 5 trace, fold gasbag 5 is taken in along the folding of folding accomodating 1.

Each group of connecting components comprises a hollow worm wheel 14, a worm 15 and a stud 13, the hollow worm wheel 14 is rotatably arranged in the sleeve 8, the worm 15 is in meshed transmission with the hollow worm wheel 14, one end of the worm 15 is coaxially provided with a worm hand wheel 16, the stud 13 is positioned on one side of the hollow worm wheel 14, which is close to the blocking butt joint device 9, the inner wall of the sleeve 8 is provided with threads, the stud 13 is in threaded connection with the sleeve 8, one side of the stud 13, which is close to the hollow worm wheel 14, is provided with a round table, the round table penetrates through the middle part of the hollow worm wheel 14, the outer contour of the round table is provided with a plurality of bumps, a plurality of grooves are formed in the inner ring of the hollow worm wheel 14, each bump is slidably arranged in one groove, one end, which is far away from the stud 13, of the round table is provided with a rubber pad, an operator installs and removes a stop valve from the outer pipe 19, and operates by rotating a worm hand wheel 16, along with the rotation of the worm hand wheel 16, the worm 15 drives the hollow worm wheel 14 to rotate, the hollow worm wheel 14 by utilizing the engagement of the bumps and the grooves, the stud 13 is driven to rotate, the stud 13 is guided by the threads to move back and forth in the sleeve 8, only the rotation force transmitted between the bumps and the grooves, the bumps move forward and the round table 18, and the rotation hook is still moves forward in the direction along the direction of the round table 18.

The connecting assembly comprises a plurality of connecting hooks 18 and rotating dial rings 17, wherein the circumference of the plurality of connecting hooks 18 is uniformly distributed in the circular truncated cone, one end of the circular truncated cone, far away from the stud 13, is provided with an annular clamping groove, the cross section of the annular clamping groove is in a convex shape, each connecting hook 18 is in an L shape, one end of each connecting hook 18 is provided with a clamping block, the clamping blocks are slidably mounted in the annular clamping groove, each connecting hook 18 is provided with a tooth socket, the rotating dial rings 17 are rotatably mounted inside the sleeve 8, the inner ring of each rotating dial rings 17 is also provided with a tooth socket, the tooth sockets on the connecting hooks 18 are meshed with the tooth sockets of the inner ring of the rotating dial rings 17, an annular clamp spring is arranged between the rotating dial rings 17 and the sleeve 8, a semicircular notch is formed in the outer ring of the rotating dial rings 17, a friction force exists between the rotating dial rings 17 and the sleeve 8, the rotating dial rings 17 are not driven by external force, a pair of retaining pieces are arranged in the sleeve 8 corresponding to the positions of each connecting hook 18, and the rotating dial rings cannot slidably move in the circular truncated cone along with the annular notch when the rotating dial rings 18.

If the stop valve is damaged and needs to be replaced, an operator rotates the worm hand wheel 16, the hollow worm wheel 14 drives the stud 13 to rotate, the stud 13 and the round table drive the connecting hook 18 to move outwards to the inlet connector 6, the connecting hook 18 loosens the inlet of the stop valve, the hollow worm wheel 14 continues to rotate, the shifting block pushes one side of the semicircular notch of the rotating shifting ring 17, the rotating shifting ring 17 rotates, all the connecting hooks 18 rotate through the inner tooth grooves, the connecting hook 18 moves away from the position where the stop valve is separated, the same method is used for dismounting one side of the outlet of the stop valve, when the stop valve is reinstalled, the operator reverses the worm hand wheel 16, the shifting block rotates along with the rotation of the hollow worm wheel 14, one side of the rotating shifting ring 17 loses the extrusion of the shifting block and resets under the action of the annular clamp spring, the stud 13 drives the connecting hook 18 to move towards the inlet connector 6, finally the connecting hook 18 hooks the inlet of the stop valve, the stop valve is pressed on the extending cylinder of the blocking butt joint 9, the sealing pad on the extending cylinder plays the role of preventing leakage, the same installation method is used on one side of the outlet of the stop valve, and the quick connection and the quick replacement of the stop valve and the pipe 7 are facilitated by setting up the inlet connector and the outlet connector.

The double-screw bolt 13 is link up with the middle part of round platform, block the both sides of butt joint ware 9 and be connected with extension section of thick bamboo, the both ends of extension section of thick bamboo are provided with sealed the pad, the portion that link up of extension section of thick bamboo and double-screw bolt 13 sliding seal, the inside of blocking butt joint ware 9 is provided with flashboard 10, the upper end rotation of flashboard 10 is provided with play brake lever 11, play brake lever 11 and block butt joint ware 9 threaded connection, install play brake hand wheel 12 on the brake lever 11, play brake hand wheel 12 is located and blocks butt joint ware 9 outside, whether change the stop valve or pull down the stop valve from current outer pipeline 19, need cut off earlier and block butt joint ware 9, the operating personnel is through rotating play brake hand wheel 12, put flashboard 10 down with play brake lever 11, make valve body 1 and outer pipeline 19 cut off the intercommunication, can prevent that air from getting into outer pipeline 19 when changing valve body 1, when changing valve body 1 to other outer pipelines 19, then need pull down the one end that inlet connector 6 and outlet connector 7 are connected with outer pipeline 19, thereby prevent that air from getting into valve body 1, prevent outside pollution, improvement installation time.

The working principle of the invention is as follows: the stop valve can manually drive the valve hand wheel 4 to rotate to close the valve through manpower, also can drive the valve rod 3 to rotate through the control system control servo motor, thereby reach the effect of controlling the opening of valve to open and close or valve opening, after the valve is closed, the exit of valve body 1 remains antibiotic solution, the air pump is electrified to work, air is pressed into the folding gasbag 5, the folding gasbag 5 ventilates and expands and stretches into the valve body 1, the edge of folding gasbag 5 is attached to the inner wall of valve body 1 and moves, the antibiotic solution that remains on the inner wall of valve body 1 is pushed to the exit direction, until folding gasbag 5 is fully expanded, remove the residual solution on the inner wall of valve body 1, prevent the inside long-time liquid that remains of valve body 1 from damaging valve body 1, then control system is through controlling the air pump to take out the gas in the folding gasbag 5, folding gasbag 5 is accomodate along original folding trace and is got into valve body 1, the axial cross-section profile design such as acceleration curve of valve core 2, the flow is controlled through the valve body opening of valve core 2, the flow of antibiotic is stable in the scope of opening to closing of valve core 2, the valve body 1 has not suddenly changed, the flexible impact that the hammer that the antibiotic solution caused to 1 in the circulation process has been reduced, and the damage to the valve body 1 caused by water to the pipeline is reduced.

The stop valve is assembled and disassembled from the outer pipeline 19 by an operator, the stop valve is operated by rotating the worm hand wheel 16, along with the rotation of the worm hand wheel 16, the worm 15 drives the hollow worm wheel 14 to rotate, the hollow worm wheel 14 drives the stud 13 to rotate by the engagement of the lug and the groove, the stud 13 rotates and is guided by threads to move back and forth in the sleeve 8, only circumferential rotation force is transmitted between the lug and the groove, the lug still slides in the groove after the stud 13 moves, the stud 13 and the round table synchronously move, and the round table drives the connecting hook 18 to move back and forth along the axial direction of the sleeve 8.

Friction exists between the rotating and shifting ring 17 and the sleeve 8, the rotating and shifting ring 17 does not rotate when not driven by external force, a pair of baffle plates are arranged in the sleeve 8 corresponding to the position of each connecting hook 18, the connecting hooks 18 are limited between the pair of baffle plates, the connecting hooks 18 cannot move along with the circular table when the circular table rotates, and the clamping blocks slide in the annular clamping grooves.

If the stop valve is damaged and needs to be replaced, an operator rotates the worm hand wheel 16, the hollow worm wheel 14 drives the stud 13 to rotate, the stud 13 and the round table drive the connecting hook 18 to move outwards to the inlet connector 6, the connecting hook 18 loosens the inlet of the stop valve, the hollow worm wheel 14 continues to rotate, the shifting block pushes one side of the semicircular notch of the rotating shifting ring 17, the rotating shifting ring 17 rotates, all the connecting hooks 18 rotate through the inner tooth grooves, the connecting hook 18 moves away from the position where the stop valve is separated, the same method is used for dismounting one side of the outlet of the stop valve, when the stop valve is reinstalled, the operator reverses the worm hand wheel 16, the shifting block rotates along with the rotation of the hollow worm wheel 14, one side of the rotating shifting ring 17 loses the extrusion of the shifting block and resets under the action of the annular clamp spring, the stud 13 drives the connecting hook 18 to move towards the inlet connector 6, finally the connecting hook 18 hooks the inlet of the stop valve, the stop valve is pressed on the extending cylinder of the blocking butt joint 9, the sealing pad on the extending cylinder plays the role of preventing leakage, the same installation method is used on one side of the outlet of the stop valve, and the quick connection and the quick replacement of the stop valve and the pipe 7 are facilitated by setting up the inlet connector and the outlet connector.

Whether the stop valve is replaced or the stop valve is detached from the current outer pipeline 19, the blocking butt joint 9 needs to be turned off firstly, an operator rotates the gate lifting hand wheel 12 to put down the gate plate 10 by utilizing the gate lifting rod 11, so that the valve body 1 and the outer pipeline 19 are cut off from communication, air can be prevented from entering the outer pipeline 19 when the valve body 1 is replaced, and when the valve body 1 is replaced on other outer pipelines 19, one end, connected with the outer pipeline 19, of the inlet connector 6 and the outlet connector 7 needs to be detached, so that air is prevented from entering the valve body 1, external pollution is prevented, the assembly and disassembly efficiency is improved, and the installation time is saved.

It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Finally, it should be noted that: the foregoing description is only a preferred embodiment of the present invention, and the present invention is not limited thereto, but it is to be understood that modifications and equivalents of some of the technical features described in the foregoing embodiments may be made by those skilled in the art, although the present invention has been described in detail with reference to the foregoing embodiments. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

Claims (8)

1. The utility model provides a prevent corrosion-resistant antibiotic stop valve of fluid retention, includes valve body (1), outer pipeline (19), be provided with valve rod (3) in valve body (1), install valve hand wheel (4), its characterized in that on valve rod (3): the valve rod is characterized in that the valve core (2) is arranged at the other end of the valve rod (3), an inlet connector (6) is connected between an inlet of the valve body (1) and an outer pipeline (19), an outlet connector (7) is connected between an outlet of the valve body (1) and the outer pipeline (19), the inlet connector (6) is identical to the outlet connector (7) in structure, the inlet connector (6) comprises a sleeve (8), a blocking butt joint device (9) is arranged in the middle of the sleeve (8), connecting components are symmetrically arranged on two sides of the blocking butt joint device (9), the two groups of connecting components are all located inside the sleeve (8), and a folding airbag (5) is arranged at one end, close to the outlet, of the valve body (1).

2. A corrosion resistant antibiotic shut off valve for preventing fluid retention according to claim 1, wherein: the folding air bag (5) is annular, an air hole is formed in the valve body (1), the air hole is communicated with the folding air bag (5), an air pump is arranged outside the valve body (1), the air pump is communicated with the air hole through a pipeline, a control system is connected with the air pump through a circuit, a servo motor is coaxially connected with the valve rod (3), and the servo motor is connected with the control system through a circuit.

3. A corrosion resistant antibiotic shut off valve for preventing fluid retention according to claim 1, wherein: each group of connecting components comprises a hollow worm wheel (14), a worm (15) and a stud (13), the hollow worm wheel (14) is rotatably arranged in the sleeve (8), the worm (15) is in meshed transmission with the hollow worm wheel (14), and one end of the worm (15) is coaxially provided with a worm hand wheel (16).

4. A corrosion resistant antibiotic shut off valve for preventing fluid retention according to claim 3, wherein: the double-screw bolt (13) is located one side that hollow worm wheel (14) is close to blocking butt joint ware (9), the screw thread has been seted up to the inner wall of sleeve (8), one side that double-screw bolt (13) are close to hollow worm wheel (14) is provided with the round platform, the round platform runs through hollow worm wheel (14) middle part, is provided with a plurality of lug on the outline of round platform, a plurality of grooves have been seted up on hollow worm wheel (14) inner circle, every lug slidable mounting is in a recess.

5. A corrosion resistant antibiotic shut off valve for preventing fluid retention according to claim 4, wherein: the connecting assembly comprises a plurality of connecting hooks (18) and rotating shifting rings (17), wherein the connecting hooks (18) are uniformly distributed on the circumference of the circular table, one end of the circular table, which is far away from the stud (13), is provided with an annular clamping groove, the cross section of the annular clamping groove is in a convex shape, each connecting hook (18) is in an L shape, one end of each connecting hook (18) is provided with a clamping block, each clamping block is slidably mounted in the annular clamping groove, each connecting hook (18) is provided with a tooth socket, the rotating shifting rings (17) are rotatably arranged inside the sleeve (8), the inner ring of the rotating shifting rings (17) is also provided with tooth sockets, and the tooth sockets on the connecting hooks (18) are meshed with the tooth sockets of the inner ring of the rotating shifting rings (17).

6. A corrosion resistant antibiotic shut off valve for preventing fluid retention according to claim 5, wherein: an annular clamp spring is arranged between the rotating shifting ring (17) and the sleeve (8), a semicircular notch is formed in the outer ring of the rotating shifting ring (17), a shifting block is arranged on one side, close to the rotating shifting ring (17), of the hollow worm wheel (14), and the shifting block is slidably arranged in the semicircular notch.

7. A corrosion resistant antibiotic shut off valve for preventing fluid retention according to claim 4, wherein: the double-screw bolt (13) link up with the middle part of round platform, the both sides that block butt joint ware (9) are connected with extension section of thick bamboo, extension section of thick bamboo and the position sliding seal that link up of double-screw bolt (13), extension section of thick bamboo's both ends are provided with sealed pad, the inside that blocks butt joint ware (9) is provided with flashboard (10), the upper end rotation of flashboard (10) is provided with play brake lever (11), play brake lever (11) and block butt joint ware (9) threaded connection, play install play brake hand wheel (12) on playing brake lever (11), play brake hand wheel (12) are located and block butt joint ware (9) outside.

8. A corrosion resistant antibiotic shut off valve for preventing fluid retention according to claim 1, wherein: the axial section outline of the valve core (2) is overlapped with the equal acceleration and equal deceleration stroke curves.