阅读说明：本技术 一种护理用药液智能输送装置 (Intelligent liquid medicine conveying device for nursing ) 是由 不公告发明人 于 2020-11-19 设计创作，主要内容包括：本发明提供了一种护理用药液智能输送装置,包括壳体以及安装在壳体内的若干个伸缩阀,壳体配合腔的腔壁包括彼此相连的第一配合侧壁和第二配合侧壁；每个伸缩阀均包括一对彼此正对紧贴设置的转盘,以及阀体、弹性件和阀杆,转盘前后同心设置两个,后转盘的圆心位于所述第一配合侧壁的圆心上,以使得后转盘的一段圆柱侧面与第一配合侧壁保持光滑接触,而后转盘的其余圆柱侧面与所述第二配合侧壁之间形成一个月牙状空隙；阀体和前转盘各自通过对应的T型螺栓与所述T型滑槽的配合可调节地固定安装在后转盘端面上,以使得两转盘及其之间的嵌入所述安装腔内的阀体连为一体。本发明可以自动地实现药液的顺次、而定时长稳定输送,易于维护使用。(The invention provides an intelligent conveying device for medical liquid for nursing, which comprises a shell and a plurality of telescopic valves arranged in the shell, wherein the wall of a matching cavity of the shell comprises a first matching side wall and a second matching side wall which are connected with each other; each telescopic valve comprises a pair of turntables which are arranged oppositely and closely, a valve body, an elastic piece and a valve rod, wherein the two turntables are concentrically arranged in front and back, the circle center of the back turntable is positioned on the circle center of the first matching side wall, so that one section of cylindrical side surface of the back turntable is in smooth contact with the first matching side wall, and a crescent-shaped gap is formed between the other cylindrical side surfaces of the back turntable and the second matching side wall; the valve body and the front rotary disc are respectively and adjustably and fixedly arranged on the end surface of the rear rotary disc through the matching of the corresponding T-shaped bolt and the T-shaped sliding groove, so that the two rotary discs and the valve body embedded into the mounting cavity between the two rotary discs are connected into a whole. The invention can automatically realize the sequential and long-time stable delivery of the liquid medicine and is easy to maintain and use.)

1. The utility model provides a liquid medicine intelligence conveyor is used in nursing which characterized in that: comprises a shell and a plurality of telescopic valves arranged in the shell, wherein

The shell comprises a matching cavity for mounting the rotary disc, the cavity wall of the matching cavity comprises a first matching side wall and a second matching side wall which are connected with each other, and the surface of the first matching side wall is a section of smooth cylindrical surface;

the telescopic valves at least comprise two telescopic valves, and each telescopic valve comprises a pair of turntables which are oppositely arranged and closely attached to each other, a valve body, an elastic piece and a valve rod; the rotary table is of a circular plate-shaped structure and comprises a front rotary table and a rear rotary table which are concentrically arranged, the circle center of the rear rotary table is positioned on the circle center of the first matching side wall, so that one section of cylindrical side surface of the rear rotary table is in smooth contact with the first matching side wall, and a crescent-shaped gap is formed between the other cylindrical side surfaces of the rear rotary table and the second matching side wall; the rotary shaft of the rotary disc is mounted on the front end and the rear end of the shell in a rotating manner, wherein the rear rotary disc is fixed on the rotary shaft, the front rotary disc can be rotatably sleeved on the rotary shaft, a storage groove and a T-shaped sliding groove which are parallel to each other are formed in the end face of the rear rotary disc, which is opposite to the front rotary disc, the circle centers of the arc structures of the storage groove and the T-shaped sliding groove are superposed with the rotation center of the rotary disc, a plurality of injection ports are further arranged at the bottom of the storage groove and communicated with an external input pipe, the end face of the front rotary disc, which is opposite to the rear rotary disc, is sunken to form a mounting; the valve body is attached to the rear turntable in an annular sliding fit manner around the rotating shaft as a circle center, and the valve body and the front turntable are adjustably and fixedly installed on the end face of the rear turntable through the matching of the corresponding T-shaped bolt and the T-shaped sliding groove respectively, so that the two turntables and the valve body embedded into the installation cavity between the two turntables are connected into a whole; a bar-shaped valve hole with a blind hole structure is formed in the valve body, a lead-in hole which is always communicated with the storage groove is formed in the hole wall of the bar-shaped valve hole, one end of the elastic piece is installed at the hole bottom, the other end of the elastic piece is fixedly connected with one end of the valve rod, the other end of the valve rod penetrates through the valve hole in a sliding fit manner and extends out of the front rotary disc, and the other end of the valve rod is always in contact with the cavity wall of the matching cavity of the shell under the pushing action of the elastic piece; the valve rod is also provided with a drainage hole penetrating through the valve rod, and the drainage hole is connected with an external discharge pipe;

all telescopic valves are arranged along the rotary shaft in a spiral path-shaped annular mode, so that when the rotary shaft rotates, the other ends of all valve rods are sequentially in smooth contact with the first matching side wall to enable the valve rods to retract into the valve hole, when the valve rods retract into the valve hole, the drainage holes are communicated with the introduction holes in the valve hole, and the other ends of the valve rods can enable the introduction holes and the drainage holes to be completely staggered when entering the crescent-shaped gaps.

2. The intelligent nursing liquid medicine conveying device according to claim 1, characterized in that: the valve comprises a valve body, a rotary disc, a valve hole, a valve rod, a valve hole, a guide hole and a guide hole, wherein the valve hole is arranged in the radial direction of the rotary disc, and the guide hole in the valve hole is arranged at a position which ensures that the guide hole is still blocked by the valve rod when the valve rod extends out for the longest distance.

3. The intelligent nursing liquid medicine conveying device according to claim 1, characterized in that: the end face of the other end of the valve rod is hemispherical, the elastic piece is a cylindrical spring or a conical spring, and when the elastic piece is the conical spring, the large end of the conical spring is connected to the bottom of the valve hole.

4. The intelligent nursing liquid medicine conveying device according to claim 1, characterized in that: the diameter of the leading-in hole is smaller than that of the drainage hole, and the drainage hole penetrates through the valve rod along the diameter direction.

Technical Field

The invention relates to the field of medical treatment, in particular to an intelligent conveying device for medical liquid for nursing.

Background

In the medical industry, some liquid medicines need to be sequentially conveyed in batches and quantitatively, at present, a series of high-precision automatic control equipment is usually adopted for conveying the liquid medicines, the effect is good, the structure is complex, the number of matched components is large, the cost is high, common operators cannot automatically disassemble and maintain due to the professional electrical control of the operators, the operators can only call the operators to repair the liquid medicines on site when faults occur, the problems of work pause caused by after-sale delay are often encountered, and the conveying of the liquid medicines is very urgent. On the other hand, because of numerous electric elements, elements such as sensors or liquid crystal display panels have higher requirements on environmental temperature, humidity and the like, the use working conditions have higher requirements than mechanical control, and the wiring is more complicated; moreover, in practice, many liquid medicines do not need extremely high flow control precision, and the basic requirement is to realize sequential and quantitative delivery, while the existing control equipment has no reasonable object for economic use to be selected and used or has no spare tool to be replaced temporarily.

Disclosure of Invention

The invention aims to solve the problems of the prior art, provides an intelligent conveying device for liquid medicine for nursing, solves the problems of complex automatic conveying control structure, high cost and inconvenient use and maintenance of the liquid medicine in the prior art, and is more suitable for frequent assembly, disassembly and maintenance.

In order to achieve the purpose, the invention adopts the following technical scheme:

an intelligent conveying device for nursing liquid medicine, which comprises a shell and a plurality of telescopic valves arranged in the shell, wherein,

the shell comprises a matching cavity for mounting the rotary disc, the cavity wall of the matching cavity comprises a first matching side wall and a second matching side wall which are connected with each other, and the surface of the first matching side wall is a section of smooth cylindrical surface;

the telescopic valves at least comprise two telescopic valves, each telescopic valve comprises a pair of turntables which are opposite to each other and are arranged in a close fit manner, a valve body, an elastic part and a valve rod, the turntables are of a circular plate-shaped structure and comprise a front turntable and a rear turntable which are arranged concentrically, the circle center of the rear turntable is positioned on the circle center of the first matching side wall, so that one section of cylindrical side surface of the rear turntable is in smooth contact with the first matching side wall, and a crescent-shaped gap is formed between the other cylindrical side surfaces of the rear turntable and the second matching side wall; the rotary shaft of the rotary disc is mounted on the front end and the rear end of the shell in a rotating manner, wherein the rear rotary disc is fixed on the rotary shaft, the front rotary disc can be rotatably sleeved on the rotary shaft, a storage groove and a T-shaped sliding groove which are parallel to each other are formed in the end face of the rear rotary disc, which is opposite to the front rotary disc, the circle centers of the arc structures of the storage groove and the T-shaped sliding groove are superposed with the rotation center of the rotary disc, a plurality of injection ports are further arranged at the bottom of the storage groove and communicated with an external input pipe, the end face of the front rotary disc, which is opposite to the rear rotary disc, is sunken to form a mounting; the valve body is attached to the rear turntable in an annular sliding fit manner around the rotating shaft as a circle center, and the valve body and the front turntable are adjustably and fixedly installed on the end face of the rear turntable through the matching of the corresponding T-shaped bolt and the T-shaped sliding groove respectively, so that the two turntables and the valve body embedded into the installation cavity between the two turntables are connected into a whole; a bar-shaped valve hole with a blind hole structure is formed in the valve body, a lead-in hole which is always communicated with the storage groove is formed in the hole wall of the bar-shaped valve hole, one end of the elastic piece is installed at the hole bottom, the other end of the elastic piece is fixedly connected with one end of the valve rod, the other end of the valve rod penetrates through the valve hole in a sliding fit manner and extends out of the front rotary disc, and the other end of the valve rod is always in contact with the cavity wall of the matching cavity of the shell under the pushing action of the elastic piece; the valve rod is also provided with a drainage hole penetrating through the valve rod, and the drainage hole is connected with an external discharge pipe;

all telescopic valves are arranged along the rotary shaft in a spiral path-shaped annular mode, so that when the rotary shaft rotates, the other ends of all valve rods are sequentially in smooth contact with the first matching side wall to enable the valve rods to retract into the valve hole, when the valve rods retract into the valve hole, the drainage holes are communicated with the introduction holes in the valve hole, and the other ends of the valve rods can enable the introduction holes and the drainage holes to be completely staggered when entering the crescent-shaped gaps.

During the concrete implementation, in order to keep the input pipe from winding when the rotary table rotates, so as to protect the input pipe and the stability and reliability of the connection of the input pipe, the input pipe can be controlled to comprise an input pipe section and an output pipe section, wherein the input pipe section is connected to the leading-in hole, the output pipe section is connected to a liquid medicine storage device, and the axis of the output pipe section is coaxial with the axis of the rotary table, namely coaxial with the rotating shaft. This configuration may also be used for the discharge pipes to avoid the corresponding pipes from becoming entangled during rotation.

In addition, as for the structure of the valve rod, the invention can also adopt the following structure to replace the structure: the valve rod is not provided with the drainage hole, but the rod section which is originally provided with the drainage hole on the valve rod is processed into a reduced rod neck part, namely the valve rod comprises two sections of sliding shafts with equal thickness and one section of connecting rod which is smaller than the sliding shafts, and the connecting rod is coaxially connected between the two sliding shafts to realize the integral fixed connection of the two sliding shafts.

Compared with the prior art, the invention has the following beneficial effects: the invention mainly adopts a mechanical control structure for automatic control, has simple structure, easy manufacture and no professional sensor and liquid crystal display technology, so that common workers can automatically assemble, disassemble and maintain after once knowing the structure of the invention, can be used as liquid medicine control equipment with general precision requirements, and can also be used as temporary emergency equipment for standby. Specifically, the invention realizes gradual opening or instant opening through the matching of the valve rod of the telescopic valve and the corresponding shell body side wall, and orderly realizes conduction (opening) through a plurality of telescopic valves arranged in sequence, the setting sequence of the telescopic valves represents the communication sequence of corresponding pipelines, the first matching side wall determines a rated full opening time of all the telescopic valves, and certain areas of crescent-shaped pores determine the opening degree (namely the flow passing size) of the telescopic valves, so that effective automatic control is carried out from the opening sequence and the conduction time of the telescopic valves. In addition, because the valve rod position is the core position, involves the cooperation intercommunication of passageway, has consequently designed into and has dismantled the valve body structure, when daily patrolling and examining or using for a long time, can directly change valve body and inside valve rod and elastic component in the lump, and all the other positions then can continue to be used, improve holistic life, make full use of this device.

In addition, the invention can be used for conveying liquid medicine, other liquid with similar work requirements, even gas, and has strong adaptability.

Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.

Drawings

FIG. 1 is a schematic cross-sectional view of the present invention taken in a cross-section perpendicular to the axis of rotation;

FIG. 2 is a schematic end view of the valve body of FIG. 1 cut away as it is covered by its respective front disk;

FIG. 3 is a schematic end view of a spiral path arrangement of 4 telescoping valves;

FIG. 4 is a schematic view of a connection structure of the input pipe;

FIG. 5 is a schematic view of another embodiment of the valve stem;

FIG. 6 is a schematic diagram of a control mechanism according to an embodiment of the present invention;

FIG. 7 is a schematic view of the control mechanism in a non-operational state;

fig. 8 is an enlarged view of the return spring of fig. 7.

Wherein, the shell 1, the second matching side wall 101, the first matching side wall 102, the front rotary disc 201, the rear rotary disc 202, the rotating shaft 3, the valve body 4, the valve rod 5, the drainage hole 6, the elastic piece 7, the leading-in hole 8, the storage groove 9, the connecting rod 10, the input pipe 11, the access pipe 1101, the output pipe 1102, the storage 12, the injection port 13, the storage groove 14, the perforation hole15The hydraulic support comprises a T-shaped bolt 16, a T-shaped chute 17, a telescopic valve 18, a front support 19, a rear support 20, a base 21, a driving rod 22, a steel ball 23, a return spring 24, a limiting rod 25, an outer gear ring 26, a rack 27 and a pressure bearing plate 28.

Detailed Description

In order to make the technical means, the creation characteristics, the achievement purposes and the functions of the invention clearer and easier to understand, the invention is further explained by combining the drawings and the detailed implementation mode:

as shown in fig. 1-2, the present embodiment provides an intelligent delivery device for medical liquids, which comprises a housing 1 and a plurality of telescopic valves 18 installed in the housing 1. The housing 1 comprises a matching cavity for mounting the turntable, the cavity wall of the matching cavity comprises a first matching side wall 102 and a second matching side wall 101 which are connected with each other, and the surface of the first matching side wall 102 is a section of smooth cylindrical surface.

The telescopic valves 18 of the present embodiment are their respective flow control elements, which comprise at least two, and a specific number, for example 2, 3 or 5, is provided depending on the situation. Each telescopic valve 18 comprises a pair of rotary discs as well as a valve body 4, an elastic member 7 and a valve stem 5. The rotating disk of the present embodiment is a circular plate-shaped structure and has two front and back concentrically, specifically, the center of circle of the back rotating disk 202 is located at the center of circle of the first matching sidewall 102, so that one section of the cylindrical side surface of the back rotating disk 202 keeps smooth contact with the first matching sidewall 102, a crescent-shaped gap is formed between the other cylindrical side surfaces of the back rotating disk 202 and the second matching sidewall 101, and two ends of the rotating shaft 3 of the back rotating disk 202 are respectively and rotatably mounted on the front and back ends of the housing 1. Specifically, the rear turntable 202 is fixed on the rotating shaft 3, the front turntable 201 is rotatably sleeved on the rotating shaft 3, the end face of the rear turntable 202, which faces the front turntable 201, is provided with the storage groove 149 and the TT-shaped sliding groove 17 which are parallel to each other, and the circle centers of the arc structures of the storage groove 149 and the TT-shaped sliding groove 17 coincide with the rotating centers of the two turntables. Meanwhile, the bottom of the storage tank 149 is further provided with a plurality of injection ports 13, the injection ports 13 are communicated with an external input pipe 11, the end face of the front rotary table 201, which is opposite to the rear rotary table 202, is sunken to form an installation cavity for installing and containing the valve body 4, the shape and the size of the installation cavity are matched with those of the valve body 4, and the end faces between the two rotary tables can be mutually sealed and attached to realize the sealing of seams between the two end faces. In addition, the valve body 4 is attached to the rear turntable 202 in an annular sliding fit manner around the rotating shaft 3 as a center, the valve body 4 and the front turntable 201 are respectively and adjustably and fixedly mounted on the end surface of the rear turntable 202 through the matching of the corresponding TT-shaped bolt 16 and the TT-shaped sliding groove 17, so that the two turntables and the valve body 4 embedded into the mounting cavity between the two turntables are connected into a whole to form an integrally movable expansion valve 18 (the dotted lines in fig. 1 are respectively the expansion valves 18 between the other turntables, and only one of the expansion valves 18 is cut away for simplification), and the whole expansion valve 18 can integrally rotate along with the rotating shaft 3. The valve body 4 is internally provided with a strip valve hole with a blind hole structure, the hole wall of the strip valve hole is provided with an introduction hole 8 which is always communicated with the storage groove 149, the bottom of the hole is provided with one end of the elastic part 7, and the other end of the elastic part 7 is fixedly connected with one end of the valve rod 5, so that under the limiting action of the elastic part 7, the valve rod 5 cannot be twisted (rotated) or cannot be twisted too much, and the condition that the later-mentioned drainage hole 6 and the introduction hole 8 are completely staggered and cannot be communicated at a set position is avoided. And the other end of the valve rod 5 passes through the valve hole in a sliding fit manner to protrude out of the front rotary disk 201. The other end of the valve rod 5 is always kept in contact with the cavity wall of the matching cavity of the shell 1 under the pushing action of the elastic piece 7. Meanwhile, the valve rod 5 is also provided with a drainage hole 6 penetrating through the valve rod 5, the drainage hole 6 is connected with an external discharge pipe so as to lead out the liquid medicine to a corresponding target part, specifically, the drainage hole 6 is connected and aligned with a through hole 15 on the wall of the mounting cavity of the front turntable 201, and the discharge pipe is connected on the through hole 15.

The specific installation position relation of the above components is as follows: all the expansion valves 18 are annularly arranged along the rotating shaft 3 in a spiral path shape, and the simplified schematic end face diagram is shown in fig. 3, so that when the rotating shaft 3 rotates, the valve rod 5 of each expansion valve 18 can be in sequential extrusion contact with the wall of the matching cavity of the shell 1, so that when the rotating disc rotates, the other ends of all the valve rods 5 are sequentially in smooth contact with the first matching side wall 102 to enable the valve rods 5 to retract towards the inside of the valve hole, and when the valve rods 5 retract towards the inside of the valve hole, the drainage holes 6 are in direct communication with the drainage holes 8 on the valve hole, and when the other ends of the valve rods 5 enter the crescent-shaped gap, the drainage holes 8 and the drainage holes 6 can be completely staggered, so that the expansion valves 18 are completely closed. The above-mentioned spiral path-shaped annularly-arranged expansion valves 18 are in a three-dimensional spiral step-shaped distribution so that each expansion valve 18 is not in the same plane, so that more expansion valves 18 can be designed to correspond to more target containers for inputting liquid medicine, and if all the expansion valves 18 are in a circular array in the same plane, the number of the expansion valves 18 is limited, and the expansion valves can only be applied to the situations that the target containers are few and the structural requirements are compact and the occupied area is small.

When the intelligent nursing liquid medicine conveying device is used, the intelligent nursing liquid medicine conveying device is firstly connected to a pipeline between a liquid medicine storage 12 and a medicine supply target, the other ends of the valve rods 5 of all the telescopic valves 18 are not contacted with the first matching side wall 102 initially, and whether certain opening is kept when the other ends of the valve rods 5 are contacted with the second matching side wall or not is designed adaptively according to actual requirements, for example, certain overlapping amount of the leading-in holes 8 and the drainage holes 6 can be kept at certain areas of the crescent-shaped holes at the end parts of the valve rods 5, namely, certain conduction connection is realized, when the valve rods 5 gradually retreat into the valve holes in the rotating process of a rotary disc, the leading-in holes 8 are gradually aligned with the drainage holes 6 and are completely communicated, the full opening of rated flow is realized, and the full opening state that the leading-in holes 8 are gradually aligned with the drainage holes 6 can also be realized by utilizing the abrupt change of the interface at the intersection of the first matching side wall, when the valve rod 5 is in the crescent-shaped pore, the leading-in hole 8 and the drainage hole 6 have no overlapping amount and are not communicated with each other completely; since the reservoir 149 is arc-shaped and concentric with the turntable, when the reservoir 149 rotates within the arc-shaped path angle range of the front turntable 201, the introduction hole 8 is always communicated with the reservoir 149, that is, the introduction hole 8 is always communicated with the liquid medicine source. The working states can be designed according to requirements. The sequence of setting the telescopic valves 18 represents the communication sequence of the respective circuits, while the first cooperating lateral wall 102 determines a nominal full opening time of all the telescopic valves 18, so as to carry out an effective automatic control from the opening sequence and the conduction time of the telescopic valves 18, several of which are simple, reliable and very practical. When the interval between two telescopic valves 18 (the size of the included angle between two valve rods 5) needs to be adjusted, the front rotary disc 201 of one telescopic valve 18 is disassembled to be separated from the rear rotary disc 202, the valve body 4 is exposed, the TT-shaped bolt 16 is unscrewed, the valve body 4 is rotated to a corresponding position, the TT-shaped bolt 16 is screwed again to fix the valve body 4, the front rotary disc 201 is covered and rotated to the position to cover the valve body 4 again in a sealing manner, and the TT-shaped bolt 16 is used for fixing the front rotary disc 201, at the moment, the interval between the valve body 4 and the other valve body 4 is changed (the included angle of the valve rods 5 is changed), so that the time for the two valve rods 5 to extrude the first matching side wall 102 is changed successively, the time interval for the telescopic valves 18 to be opened completely is changed successively, and the time interval for the liquid medicine to be switched on or off of corresponding pipelines is flexibly adjusted.

As an implementation detail, in the above embodiment, the hole axis of the valve hole of the valve body 4 is arranged along the radial direction of the rotary disk so that the valve rod 5 slidingly protrudes outward. The position of the lead-in hole 8 in the valve hole needs to be such that when the valve rod 5 extends for the longest distance, the lead-in hole 8 is still blocked by the valve rod 5, thereby avoiding the communication between the lead-in hole 8 and the valve hole part where the elastic member 7 is located and protecting the elastic member 7. And the end face of the other end of the valve rod 5 is hemispherical so as to be smoothly and reliably contacted with the corresponding matched side wall, thereby improving the flexibility in rotation.

In addition, the elastic element 7 is a cylindrical spring or a conical spring, and when the elastic element is a conical spring, the large end of the conical spring is connected to the bottom of the valve hole. The diameter of the introduction hole 8 is smaller than that of the drainage hole 6 to sufficiently introduce the liquid medicine. And drainage hole 6 runs through the setting along the diameter direction of valve rod 5 to minimize valve rod 5's diameter, retrench structure.

In the specific implementation of the present invention, in order to ensure that the input pipe 11 is prevented from being wound and to protect the stability and reliability of the input pipe 11 and the connection thereof when the turntable rotates, especially when the turntable rotates for multiple revolutions during actual operation, as shown in fig. 4, the input pipe 11 may be made to include an input pipe section 1101 and an output pipe section 1102, wherein the input pipe 11 is connected to the injection port 13, the output pipe section 1102 is connected to the liquid storage 12, and the axis of the output pipe section 1102 is coaxial with the axis of the turntable, i.e., coaxial with the rotation shaft 3. This configuration may also be used for the discharge pipes to avoid the corresponding pipes from becoming entangled during rotation. The anti-winding structure ensures that the input tube 11 can not be wound and bound by itself when the turntable rotates, has very reliable connection, ensures the stable supply input or output of liquid medicine, is particularly important for improving the service performance of the anti-winding rotary table, and can greatly improve the convenience and the reliability of use.

In addition, as for the structure of the valve rod 5, the following structure can be adopted to replace the structure: the valve rod 5 is not provided with the drainage hole 6, but as shown in fig. 5, the rod section of the valve rod 5, which is originally provided with the drainage hole 6, is processed into a reduced rod neck part, that is, the valve rod 5 comprises two sections of sliding shafts with equal thickness and a section of connecting rod 10 smaller than the sliding shafts, and the connecting rod 10 is coaxially connected between the two sliding shafts to realize the integral fixed connection of the two sliding shafts. The structure ensures that the valve rod 5 is not limited to the design requirement that the valve rod 5 and the valve hole only allow relative axial sliding but cannot rotate, the valve rod 5 can freely rotate, the free telescopic movement of the valve rod 5 is more facilitated, and the control sensitivity and reliability of the telescopic valve 18 are improved.

Aiming at the embodiment, the extension and retraction of the valve rod 5 are different in the cavity wall of the matching cavity of the shell contacted by the rotating disc caused by the rotation of the rotating disc, and during actual manufacturing, the rotating disc can be fixed to enable the shell to rotate, so that the contact position of the valve rod 5 and the cavity wall of the matching cavity is changed. Referring to fig. 6-8, the details are as follows: a special control mechanism may be designed for controlling the opening and closing of the expansion valve 18 as a flow switch actuator. Wherein, control mechanism includes base 21 and preceding support 19, back support 20, actuating lever 22, and base 21 level sets up, and preceding support 19 is a straight-bar, and back support 20 is a hook-shaped member that the top is crooked forward, preceding support 19 and the bottom of back support 20 articulate on base 21, and the top of back support 20 articulates the middle part of actuating lever 22. Simultaneously, the corner point of preceding support 19 articulates at the front end of actuating lever 22 and the free end rigid coupling of hook portion department of preceding support 19 has a steel ball 23, the rear end of actuating lever 22 is the straight shank form hand (hold) that the level set up, install in the contained angle region between the front side of preceding support 19 and base 21 and be ﹀ type reset reed, the contained angle under this reset reed natural state is the obtuse angle, reset reed both ends department respectively has a bellying, two bellyings respectively towards corresponding preceding support 19 and base 21 surface protrusion setting, and with preceding support 19 complex bellying and preceding support 19 sliding fit, with base 21 complex arch and base 21 rigid coupling to protruding can self-adaptively slide in the spout on preceding support 19 when preceding support 19 rotates forward and extrudees rather than the complex arch. In addition, a limiting rod 25 is further fixed to the base 21 at the front side of the rear support 20, and the limiting rod 25 is used for limiting a limit position of the rear support 20 in forward rotation. Preferably, in the above embodiment, the cross section of the protrusion portion on the side close to the front support 19 is T-shaped, and the sliding groove on the front support 19, which is engaged with the protrusion portion, is also T-shaped. In addition, as a specific implementation detail, a diagonal spring (not shown) is further provided between the front side of the rear support 20 and the base 21, and the diagonal spring is used for limiting the rear support 20 to return to the initial position when the driving rod 22 is not pressed by an external force.

On the other hand, in the embodiment, the outer surface of the housing 1 is fixedly sleeved with the outer gear ring 26, a rack 27 is vertically arranged between the control mechanism and the outer gear ring 26, the rack 27 can slide in the vertical direction and is always meshed with the outer gear ring 26, a plurality of bearing plates 28 are arranged at intervals along the length direction on the surface of one side of the rack 27 facing the control mechanism, and when the steel ball 23 of the front support 19 of the control mechanism downwards presses the bearing plates 28, the rack 27 drives the housing 1 to rotate so as to change the expansion amount of the valve rod 5 of the invention.

When the valve rod adjusting device is used, the handle of the driving rod 22 is pressed downwards by hands or feet to drive the front support 19 to rotate forwards, so that the steel ball 23 of the hook part of the front support collides with the bearing plate 28 on the rack 27, the rack 27 is pushed to vertically move downwards to drive the outer gear ring 26 to rotate, the shell rotates, the expansion amount of the valve rod 5 is changed by the rotation of the shell, and the purpose of adjusting the expansion amount of the valve rod 5 to adjust the flow is achieved, and the valve rod adjusting device is particularly useful for temporary adjustment in an accidental situation.

Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.