CN109331243B

CN109331243B - Automatic hydrops drainage device

Info

Publication number: CN109331243B
Application number: CN201811135026.1A
Authority: CN
Inventors: 黄狄文; 崔书中; 唐鸿生; 阮强; 王才丰
Original assignee: Guangzhou Bright Medical Technology Co ltd
Current assignee: GUANGZHOU BRIGHT MEDICAL TECHNOLOGY Co.,Ltd.
Priority date: 2018-09-28
Filing date: 2018-09-28
Publication date: 2021-02-19
Anticipated expiration: 2038-09-28
Also published as: CN112156250A; CN109331243A; CN112826993A; CN112741932A

Abstract

The invention relates to the field of medical equipment, and discloses an automatic effusion drainage device which is composed of a support component, a weighing type suspension support component, a drainage adjusting component, a controller and a power supply component, wherein the weighing type suspension support component, the drainage adjusting component, the controller and the power supply component are supported by the support component; the weight-measuring suspension support component can provide support for the drainage bag and feed back a weight signal to the controller; the controller can regulate and control the working state of the drainage regulating assembly based on the acquired weight signal, a preset drainage mode and drainage parameters, so that the drainage regulating assembly can extrude the drainage tube in different modes to realize the operation and control of negative pressure drainage and normal pressure drainage; this automatic hydrops drainage device adopts intelligent design, uses the automatic control that can realize drainage at regular time, ration drainage and constant speed drainage with current conventional drainage subassembly cooperation, has improved the security and the stability of drainage operation, and it has two kinds of drainage modes of ordinary pressure drainage and negative pressure drainage, can satisfy most clinical drainage needs, has wide application prospect clinically.

Description

Automatic hydrops drainage device

Technical Field

The invention relates to the technical field of medical instruments, in particular to an automatic effusion drainage device which can automatically control various drainage operations clinically.

Background

Under normal conditions, a small amount of liquid is in the chest cavity and the abdominal cavity of a human body, so that the visceral organs in the cavity are lubricated, and if the liquid amount in the cavity is increased beyond a normal physiological range under a pathological condition, a disease such as hydrothorax and ascites can be caused. The causes of the abdominal dropsy and the pleural effusion are many and are very common clinical symptoms, and although the abdominal dropsy and the pleural effusion are only one sign, a large amount of the abdominal dropsy and the pleural effusion can cause a series of complications and are not beneficial to treatment of the causes, and even can endanger life in severe cases. Therefore, in cases with a large amount of peritoneal and pleural effusion, drainage of the effusion must be performed first in clinical treatment.

In the clinical operation process of draining a large amount of effusion, the clinical parameters such as daily drainage times, each drainage quantity, drainage speed and the like are required according to the state of illness of a case, in the actual clinical operation, the clinical parameters in the drainage process are generally realized by artificial subjective control of medical care personnel or family members of a patient, and the current artificial control mode has certain disadvantages, on one hand, the drainage process is not performed according to the expected mode of a doctor due to misunderstanding or negligence of the operating personnel and the like in oral delivery of medical advice, discomfort and injury are brought to the patient due to improper drainage, even the life of the patient is threatened, on the other hand, the real-time drainage quantity and the drainage speed are judged by artificial observation in the drainage process, the error is large, the drainage effect is difficult to guarantee, and simultaneously, the current control mode obviously increases the burden of medical staff and family members of patients.

The drainage bag is a relatively cheap medical article, is the best choice as a terminal container in clinical hydrops drainage, but can only be applicable to conventional hydrothorax drainage operation under normal pressure, but can not be applicable to negative pressure drainage, and if negative pressure drainage is carried out, a water-sealed bottle with a higher price than the drainage bag is usually needed, so that a certain economic burden is brought to a patient.

Disclosure of Invention

The invention aims to provide an automatic effusion drainage device which adopts an intelligent design, can be matched with the existing drainage bag and a drainage tube for use to realize normal-pressure drainage and negative-pressure drainage, and can automatically control each drainage process according to preset drainage starting time, single drainage quantity, single drainage speed and other drainage parameters.

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

an automatic effusion drainage device, comprising:

the support component consists of a base, a vertical column which is supported by the base and extends vertically, and a setting plate which is supported by the vertical column, positioned above the base and positioned at the front side of the vertical column;

the weighing type suspension support assembly is supported by the placing plate, a weighing sensor is arranged in the weighing type suspension support assembly, and a suspension part is arranged at the lower end of the weighing type suspension support assembly; the drainage bag support device is used for providing only support for the drainage bag and enabling the drainage bag to be suspended below the placement plate, the height of the drainage bag can be adjusted, and the weighing sensor outputs a weight signal capable of reflecting the weight change state of accumulated liquid in the drainage bag;

the drainage adjusting component comprises a squeezing mechanism, a driving motor, a concave seat arranged on the front side of the placing plate, an introducing groove, a leading-out groove and a communicating groove; the squeezing mechanism is limited in the recess, a tube placing gap for accommodating the drainage tube is respectively formed between the squeezing mechanism and the upper side wall and the lower side wall of the recess, the end parts of the two tube placing gaps positioned on one side are respectively communicated with the introduction groove and the extraction groove, and the end parts of the two tube placing gaps positioned on the other side are communicated through the communication groove, so that the drainage tube can sequentially extend through the two tube placing gaps under the guidance of the introduction groove, the communication groove and the extraction groove; the extrusion mechanism comprises a longitudinal pressing block and two transverse pressing blocks positioned on the same side of the longitudinal pressing block, and the longitudinal pressing block and the two transverse pressing blocks do not extrude the drainage tube at the initial position; the driving motor is in transmission fit with the longitudinal pressing block and the two transverse pressing blocks through the transmission mechanism, so that the longitudinal pressing block and the two transverse pressing blocks can be driven to move; when the driving motor continuously outputs in the forward direction, the transmission mechanism drives the longitudinal pressing block to move towards the leading-in end of the drainage tube, the longitudinal pressing block stops moving after the leading-in end is extruded to a blocking state, then the transmission mechanism drives the two transverse pressing blocks to be away, the two transverse pressing blocks can respectively extrude the drainage tube in the gap between the two tubes to the blocking state at the same time, and in the process that the two transverse pressing blocks respectively extrude the drainage tube in the gap between the two tubes, fluid in the drainage tube in the gap between the two tubes flows out from the leading-out end, namely primary fluid output is completed; when the driving motor continuously outputs reversely, the transmission mechanism drives the longitudinal pressing block to move towards the leading-out end of the drainage tube, the longitudinal pressing block stops moving after the leading-out end is extruded to a blocking state, then the transmission mechanism drives the two transverse pressing blocks to approach, the two transverse pressing blocks can be reset to the initial position simultaneously, and when the flattened drainage tube in the gap between the two tubes recovers the original shape, the accumulated liquid on the front side of the leading-in end enters the drainage tube in the gap between the two tubes, namely primary fluid suction is completed;

the controller is fixed on the placing plate, and a setting key and a display screen are arranged on the front side of the controller; the setting key is used for inputting a drainage mode, drainage parameters and a startup and shutdown instruction of each drainage into the controller, the drainage mode comprises normal-pressure drainage and negative-pressure drainage, the drainage parameters comprise drainage starting time, effusion weight drained in unit time in the drainage process, namely drainage speed, and effusion weight drained in single drainage, namely single drainage amount; the controller can acquire a weight signal continuously fed back by the weighing sensor in real time, and the real-time drainage speed and the single real-time drainage quantity are calculated according to the weight signal; the controller can adjust the positions of the longitudinal pressing block and the two transverse pressing blocks based on the regulation and control of the working state of the driving motor; in the negative pressure drainage mode, the controller enables the driving motor to alternately perform forward output and reverse output to drive fluid output and fluid suction to be alternately performed, so that negative pressure drainage is realized, and meanwhile, the controller regulates and controls the operation states of the fluid output and the fluid suction based on the real-time drainage speed, the single real-time drainage quantity and the preset drainage parameters, so that the timed drainage, the constant-speed drainage and the quantitative drainage are realized; in the normal-pressure drainage mode, normal-pressure drainage is realized based on a siphon effect, the controller enables the driving motor to run at a low speed, and on the premise that the two transverse press blocks are kept at initial positions, the extrusion degree of the longitudinal press blocks on the introduction end is adjusted based on the real-time drainage speed, the single real-time drainage quantity and preset drainage parameters, so that the timed drainage, the constant-speed drainage and the quantitative drainage are realized; after the controller receives a shutdown instruction, the longitudinal pressing block and the two transverse pressing blocks are adjusted to initial positions and then shutdown is executed; the display screen is used for displaying the data information held by the palm in the controller;

and the power supply assembly is arranged on the mounting plate, consists of a storage battery and a plurality of voltage transformation modules and is used for providing working current for the elements in the weighing type suspension support assembly, the drainage adjusting assembly and the controller.

The use method and the working principle of the automatic effusion drainage device are as follows:

the automatic effusion drainage device is placed on the ground or a platform, the upper end of a drainage bag is fixed on a suspension part, so that the drainage bag is suspended above a base, and if normal-pressure drainage is carried out, the drainage bag is required to be lower than a drainage source; leading the middle lower section of the drainage tube into a corresponding tube placing gap through an introduction groove, then leading the drainage tube into another tube placing gap through a communication groove, finally leading the drainage tube out through a leading-out groove, leading the drainage tube to sequentially pass through the two tube placing gaps, connecting the lower end of the drainage tube with a drainage bag, adjusting the height of the drainage bag through a hanging part, leading the part of the drainage tube between the leading-out groove and the drainage bag to be in a natural extension state, communicating and fixing the front end of the drainage tube with a chamber to be drained of a patient according to conventional drainage operation, adjusting an automatic effusion drainage device to a starting state through a set key, presetting a drainage mode and drainage parameters in a controller by utilizing the set key according to clinical requirements, and finishing the early preparation work of the drainage operation; then, in a negative pressure drainage mode, the controller regulates and controls the working state of the drainage regulating assembly, so that the longitudinal pressing block and the two transverse pressing blocks change stations according to a preset rule, corresponding extrusion is applied to the drainage tube, the drainage tube alternately outputs and sucks fluid, accumulated fluid in the drainage tube is continuously caused to flow towards the direction of the drainage bag, the accumulated fluid is forced to flow into the drainage bag from a human body, and negative pressure drainage is realized; in the normal pressure drainage mode, can realize the drainage based on the siphon effect, the controller is based on real-time drainage speed, single real-time drainage volume and preset drainage parameter, adjusts the position of vertical briquetting, and the extrusion degree of vertical briquetting to the drainage tube introduction end is adjusted to indirect promptly, realizes regularly drainage, constant speed drainage and ration drainage from this.

This automatic hydrops drainage device has following beneficial effect:

the automatic hydrops drainage device adopts an intelligent design, can be used by being matched with the conventional drainage tube and drainage bag clinically, can be compatible with two working modes of normal pressure drainage and negative pressure drainage, can automatically control the whole drainage operation according to the preset drainage parameters after presetting drainage parameters such as the initial time of each drainage, the drainage quantity of a single drainage, the drainage speed of each drainage and the like, realizes automatic intelligent drainage with timing, quantification and constant speed, greatly lightens the work burden of medical personnel because no human interference is needed in the drainage process, avoids the situation that the drainage cannot be carried out according to an expected mode due to negligence or improper operation, improves the safety and stability of the clinical liquid drainage operation, and fully ensures the drainage effect; the automatic effusion drainage device is used for controlling the drainage quantity and the drainage speed based on the coordination of the sensing device, the controller and the electric system, and compared with the manual observation and control in the prior art, the automatic effusion drainage device is more accurate in operation and control, so that the drainage effect is further ensured; the automatic effusion drainage device realizes the adjustment of the drainage speed and the generation of the drainage negative pressure based on the extrusion of components in the drainage adjusting assembly to the drainage tube in different modes, ensures the sealing property of an effusion drainage pipeline, ensures the absolute isolation of effusion from the automatic effusion drainage device, is safe and sanitary, and has low use cost because all the components involved in the clinical use process of the automatic effusion drainage device are suitable for recycling; meanwhile, the drainage adjusting assembly adopts scientific and ingenious structural design, the utilization rate of components is exerted to the maximum, the structure of the automatic effusion drainage device is more compact, the implementation cost is lower, meanwhile, the automatic effusion drainage device adopts a driving motor to provide power required by work, and the operation energy consumption is very low; to sum up, this automatic hydrops drainage device uses very conveniently, uses very nimble, and the operation is very simple, its compact structure, and design benefit can reciprocate to circulate and use, measures the accuracy, and cost of manufacture and use are lower, and extremely be fit for using widely in medical institution.

Drawings

Fig. 1 is a schematic view of the entire structure of the automatic effusion drainage device in embodiment 1.

Fig. 2 is a second schematic view of the automatic effusion drainage device in the embodiment 1.

Fig. 3 is a schematic structural view of the upper half of the automatic effusion drainage device in embodiment 1.

FIG. 4 is a schematic view of the structure of the drainage regulating assembly combined with a drainage tube in example 1.

FIG. 5 is a schematic view showing the operation of the drainage regulating assembly for promoting the fluid output of the drainage tube in the embodiment 1.

FIG. 6 is a schematic view showing the operation of the drainage regulating assembly for causing the drainage tube to suck fluid in the embodiment 1.

FIG. 7 is a schematic diagram of the operation of the drainage regulating assembly for controlling the drainage state in the normal pressure drainage in the embodiment 1.

Fig. 8 is a schematic view of the automatic effusion drainage device in accordance with one of the clinical states of use in embodiment 1.

Fig. 9 is a second schematic view of the automatic effusion drainage device in accordance with the embodiment 1 in clinical use.

Fig. 10 is a control schematic diagram of the automatic effusion drainage device in the embodiment 1 during operation.

Fig. 11 is a schematic structural view of a weighted suspension assembly in embodiment 1.

FIG. 12 is a schematic view showing that the driving motor of embodiment 1 preferentially drives the longitudinal pressing block to move through the transmission mechanism.

FIG. 13 is a schematic diagram of the embodiment 1, wherein a driving motor drives two transverse pressing blocks to move through a transmission mechanism and keeps a longitudinal pressing block at a constant position.

Fig. 14 is a schematic view of a connection structure of the weighted suspension assembly and the installation plate in embodiment 2.

FIG. 15 is a schematic view showing the connection of the swing seat, the installation plate and the weight-measuring suspension assembly according to embodiment 2.

Fig. 16 is a schematic structural view illustrating that the installation plate can be combined with the fastener and the pillar via the combination seat in embodiment 3.

FIG. 17 is a schematic view of the automatic effusion drainage device in example 3 supported by an infusion rod.

Fig. 18 is a schematic structural diagram of a card firmware in embodiment 3 after further improvement.

FIG. 19 is a schematic view of the embodiment 3 with the clamping member further modified to be combined with the infusion rod.

Fig. 20 is a schematic view illustrating the cooperation between the cover plate and the installation plate in the working state of the automatic effusion drainage device in embodiment 4.

Fig. 21 is a schematic view of the automatic effusion drainage device in embodiment 4 in cooperation with the cover plate and the placement plate in a non-operating state.

FIG. 22 is a schematic view showing the locking mechanism, the cover plate and the mounting plate according to embodiment 4.

Fig. 23 is a schematic view of the one-way output joint in the embodiment 5 when the fluid is output and the fluid is a liquid accumulation.

FIG. 24 is a schematic view of the one-way output connector of example 5 showing that the float ball prevents the backflow of the accumulated liquid after the fluid output is completed.

Fig. 25 is a schematic view of the one-way output joint in the embodiment 5 when the fluid is output and the fluid is air.

Fig. 26 is a schematic view showing the arrangement of the mounting plate, the driving motor, the transmission mechanism, and the pressing mechanism in embodiment 6.

Fig. 27 is a schematic view showing the combination of the driving motor, the transmission mechanism, and the pressing mechanism in embodiment 6.

Fig. 28 is a schematic structural view of the first screw and its connecting part in embodiment 6.

Fig. 29 is a schematic view of the operation of the transmission mechanism in the fluid output process in embodiment 6.

Fig. 30 is a schematic view showing the operation of the transmission mechanism in the fluid suction process in embodiment 6.

FIG. 31 is a schematic view showing the operation of the transmission mechanism in the normal pressure drainage control process in embodiment 6.

Detailed Description

Example 1

Referring to fig. 1 and 2, the present embodiment discloses an automatic effusion drainage device, which comprises five parts, namely a support assembly, a weight-measuring suspension support assembly 3, a drainage regulation assembly, a controller and a power supply assembly 15;

referring to fig. 1 and 2, the support assembly is composed of a base 1, a column 2 and a setting plate 6, wherein the column 2 is supported by the base 1 and extends vertically, and the setting plate 6 is supported by the column 2 and is located above the base 1 and at the same time is located at the front side of the column 2; the placing plate 6 is used for providing a supporting and installing space for other components;

as shown in fig. 1, 2, 8 and 10, the weight-measuring suspension assembly 3 is supported by a mounting plate 6, a load cell 16 is arranged in the weight-measuring suspension assembly, and a suspension part 13 is arranged at the lower end of the weight-measuring suspension assembly; the weight-measuring suspension support assembly 3 is used for providing only support for the drainage bag 18 and enabling the drainage bag 18 to suspend below the placing plate 6, the height of the drainage bag 18 can be adjusted, and the weighing sensor 16 outputs a weight signal capable of reflecting the weight change state of accumulated liquid in the drainage bag 18;

as shown in fig. 1, 3, 4 and 8, the drainage regulating assembly includes a pressing mechanism, a driving motor 14, a recess 8, an introducing groove 7, an extracting groove 4 and a communicating groove 10, the recess 8, the introducing groove 7, the extracting groove 4 and the communicating groove 10 are all arranged on the front side wall of the mounting plate 6, and the pressing mechanism is limited in the recess 8; a pipe placing gap capable of accommodating the drainage pipe 17 is formed between the extrusion mechanism and the upper side wall of the recess 8, another pipe placing gap capable of accommodating the drainage pipe 17 is formed between the extrusion mechanism and the lower side wall of the recess 8, the two pipe placing gaps are parallel, the end parts of one side of the extrusion mechanism and the lower side wall of the recess 8 are respectively communicated with the introduction groove 7 and the extraction groove 4, the end parts of the other side of the two pipe placing gaps are communicated through the communication groove 10, and the drainage pipe 17 can sequentially extend through the two pipe placing gaps in a U shape under the guidance of the introduction groove 7, the communication groove 10 and the extraction groove 4; the extrusion mechanism comprises a longitudinal pressing block 5 and two transverse pressing blocks 9, the two transverse pressing blocks 9 are positioned on the same side of the longitudinal pressing block 5, and the longitudinal pressing block 5 and the two transverse pressing blocks 9 do not extrude the drainage tube 17 at the initial position; the driving motor 14 is in transmission connection with the longitudinal pressing block 5 and the two transverse pressing blocks 9 through a transmission mechanism, so that the longitudinal pressing block 5 and the two transverse pressing blocks 9 can be driven to move; referring to fig. 5 and 10, when the driving motor 14 continuously outputs in the forward direction, the transmission mechanism firstly drives the longitudinal pressing block 5 to move towards the introducing end of the drainage tube 17, the squeezing action of the longitudinal pressing block 5 on the introducing end is gradually enhanced, after the introducing end is squeezed to the blocking state, if the driving motor 14 continuously outputs in the forward direction, the transmission mechanism does not drive the longitudinal pressing block 5 to move, but drives the two transverse pressing blocks 9 to move away, so that the squeezing action of the two transverse pressing blocks 9 on the drainage tube 17 in the two tube placing gaps is respectively enhanced, finally the two transverse pressing blocks 9 can respectively squeeze the drainage tube 17 in the two tube placing gaps to the blocking state at the same time, and in the process that the two transverse pressing blocks 9 respectively squeeze the drainage tube 17 in the two tube placing gaps, the fluid in the drainage tube 17 in the tube placing gaps flows out from the leading-out end, namely, one-time fluid output is completed; referring to fig. 6 and 10, when the driving motor 14 continuously outputs in the reverse direction, the transmission mechanism firstly drives the longitudinal pressing block 5 to move towards the leading-out end of the drainage tube 17, the squeezing action of the longitudinal pressing block 5 on the leading-out end is gradually enhanced, after the leading-out end is squeezed to a blocking state, if the driving motor 14 continues to output in the reverse direction, the transmission mechanism does not drive the longitudinal pressing block 5 to move, but drives the two transverse pressing blocks 9 to approach, so that the squeezing action of the two transverse pressing blocks 9 on the drainage tube 17 in the gap between the two tubes is weakened, and finally the two transverse pressing blocks 9 can be reset to the initial position and do not squeeze the drainage tube 17 in the gap between the two tubes, and when the collapsed drainage tube 17 in the gap between the two tubes is gradually restored to the original shape, the effusion in front of the leading-in end enters the drainage tube 17 in the gap between the tubes, i.e.; the leading-in end and the leading-out end of the drainage tube 17 respectively refer to the tube sections of the drainage tube 17 positioned in the tube placing gap and close to the leading-in groove 7 and the leading-out groove 4;

referring to fig. 1, 3 and 10, the controller is fixed on the setting plate 6, and a setting key 11 and a display screen 12 are arranged on the front side of the controller; the setting key 11 is used for inputting a drainage mode, drainage parameters and a startup and shutdown instruction of each drainage into the controller, the drainage mode comprises normal-pressure drainage and negative-pressure drainage, the drainage parameters comprise drainage starting time, effusion weight drained in unit time in the drainage process, namely drainage speed, and effusion weight drained in single drainage, namely single drainage amount; the controller can obtain a weight signal continuously fed back by the weighing sensor 16 in real time, and calculate the real-time drainage speed and the single real-time drainage quantity according to the weight signal; the controller can regulate and control the working states of the driving motor 14 such as starting and stopping, output direction, rotating speed and the like, so that the positions of the longitudinal pressing block 5 and the two transverse pressing blocks 9 can be regulated; referring to fig. 5, 6 and 10, in the negative pressure drainage mode, the controller makes the driving motor 14 alternately perform forward output and reverse output to drive fluid output and fluid suction to be alternately performed, so as to implement negative pressure drainage, and meanwhile, the controller regulates and controls the operation states of the fluid output and the fluid suction based on the real-time drainage speed, the single real-time drainage amount and the preset drainage parameters, so as to implement the control purposes of timing drainage, constant-speed drainage and quantitative drainage; referring to fig. 7 and 10, in the normal pressure drainage mode, normal pressure drainage can be realized based on the siphon effect, the controller enables the driving motor 14 to run at a low speed, and on the premise that the two transverse pressing blocks 9 are kept at the initial positions, the extrusion degree of the longitudinal pressing block 5 to the introduction end is adjusted based on the real-time drainage speed, the single real-time drainage quantity and the preset drainage parameters, so that the control purposes of timing drainage, constant-speed drainage and quantitative drainage are realized; the fluid is accumulated liquid or air in the drainage tube 17; after receiving a shutdown instruction, the controller firstly adjusts the longitudinal pressing block 5 and the two transverse pressing blocks 9 to initial positions and then performs shutdown, so that the drainage tube 17 can be smoothly separated from the tube placing gap after the drainage operation is finished, and the drainage tube 17 can be smoothly placed in the tube placing gap when the automatic effusion drainage device is used next time; the display screen 12 is used for displaying data information held by the palm in the controller, including information such as real-time drainage speed, single real-time drainage quantity, set drainage mode and drainage parameters, and also displaying drainage states indirectly obtained based on the information, such as working states of drainage in-process, drainage pause, drainage end and the like, so that an operator can know drainage conditions in time;

as shown in fig. 2, the power supply module 15 is mounted on the mounting plate 6, and is composed of a storage battery and a plurality of voltage transformation modules, and is used for supplying operating current to the weighing suspension assembly 3, the current-guiding adjustment assembly, and the components in the controller; the structure of the power module 15 and its connection to other components are not described in detail since they can be easily implemented using conventional techniques.

referring to fig. 8, the automatic effusion drainage device is placed on the ground or on a platform, the upper end of the drainage bag 18 is fixed on the hanging part 13, the drainage bag 18 is suspended above the base 1, and if normal pressure drainage is carried out, the drainage bag 18 is ensured to be lower than a drainage source; the middle lower section of a drainage tube 17 is arranged in a corresponding tube placing gap through an introduction groove 7, the rear drainage tube 17 is arranged in the other tube placing gap through a communication groove 10, finally the drainage tube 17 is led out through a leading-out groove 4, so that the drainage tube 17 sequentially passes through the two tube placing gaps, the lower end of the drainage tube 17 is connected with a drainage bag 18, the height of the drainage bag 18 is adjusted through a hanging part 13, the part of the drainage tube 17, which is positioned between the leading-out groove 4 and the drainage bag 18, is in a natural extension state, the front end of the drainage tube 17 is communicated with a chamber to be drained of a patient and fixed according to the conventional drainage operation, an automatic hydrops drainage device is adjusted to a starting state through a setting key 11, a drainage mode and drainage parameters are preset in a controller according to clinical requirements by using the setting key 11, and the early preparation work of the drainage operation is completed; afterwards, the controller alright carry out automatic control to drainage adjusting part's operating condition based on real-time drainage speed, single real-time drainage volume and preset drainage mode and drainage parameter, and concrete regulation and control mode is:

(1) as shown in fig. 5, 6, 7, 10, in the normal pressure drainage mode:

A. when the primary drainage is carried out, firstly, the controller regulates and controls the working state of the driving motor 14, so that the fluid output and the fluid suction are alternately carried out, the fluid in the drainage tube 17 flows towards the drainage bag, when the weighing sensor 16 senses the weight change, the situation that partial effusion enters the drainage bag 18 is shown, then, the controller enables the two transverse pressing blocks 9 to reset to the initial position, and adjusts the position of the longitudinal pressing block 5, so that the leading-in end and the leading-out end of the drainage tube 17 in the tube placing gap are kept in a conducting state, at the moment, the primary drainage is started, and the normal pressure drainage can be normally carried out by means of the siphon effect; in each drainage, the controller adjusts the position of the longitudinal pressing block 5 according to the preset initial time of each drainage to enable the drainage tube 17 to be in a conducting state, namely, the timed drainage is realized;

B. in the drainage process, the controller enables the driving motor 14 to run at a low speed, and on the premise that the two transverse pressing blocks 9 are kept at the initial positions, the extrusion degree of the longitudinal pressing block 5 to the leading-in end of the drainage tube 17 in the tube gap is adjusted, so that the effusion speed in the drainage tube 17 is increased or reduced, and finally the real-time drainage speed is approximately equal to the preset drainage speed, namely, the constant-speed drainage is realized;

C. in the drainage process, the controller calculates the single real-time drainage amount from the initial drainage to the current one, when the single real-time drainage amount reaches the preset single drainage amount, the controller adjusts the position of the longitudinal pressing block 5, so that the longitudinal pressing block 5 extrudes the introduction end of the drainage tube 17 in the tube placing gap to a blocking state, and the quantitative drainage is realized when the drainage is finished;

(2) referring to fig. 5, 6, 10, in the negative pressure drainage mode:

A. according to the preset drainage starting time, the controller regulates and controls the working state of the driving motor 14, so that the fluid output and the fluid suction are alternately performed, and the fluid in the drainage tube 17 continuously flows towards the drainage bag, namely, the timing drainage is realized;

B. in the drainage process, the controller adjusts the working state of the driving motor 14 according to the real-time drainage speed, namely adjusts the running states of fluid output and fluid suction, and finally enables the real-time drainage speed to be approximately equal to the preset drainage speed, namely constant-speed drainage is realized; the operation states of the fluid output and the fluid suction comprise start-stop, duration and working frequency of the fluid output and the fluid suction;

C. in the drainage process, the controller calculates the single real-time drainage volume of the initial drainage to the current time in real time, after the single real-time drainage volume reaches the preset single drainage volume, the controller enables the driving motor 14 to reversely output until the longitudinal pressing block 5 extrudes the leading-out end of the drainage tube 17 to a blocking state and the two transverse pressing blocks 9 reset to the initial position and then stop running, at the moment, the drainage is finished, and at the moment, the drainage tube 17 is extruded by the longitudinal pressing block 5 to keep a blocking state, so that the quantitative drainage is realized.

In the negative pressure drainage mode, after drainage is finished each time, the controller enables the driving motor 14 to reversely output until the longitudinal pressing block 5 extrudes the leading-out end of the drainage tube 17 to a blocking state and the two transverse pressing blocks 9 reset to the initial position and then stop running; the technical characteristics are that when the negative pressure drainage is suspended or finished, the leading-out end of the drainage tube 17 is extruded to a blocking state by the longitudinal pressing block 5 to avoid the effusion flowing in the drainage tube 17, and the two transverse pressing blocks 9 are both positioned at the initial positions and do not extrude the drainage tube 17, so that the drainage tube 17 in the tube placing gap can be automatically restored to the original state, namely, the cylindrical shape, the long-term flattening state is avoided, the elasticity is greatly reduced, and the stable performance of the subsequent negative pressure drainage is ensured.

Referring to fig. 2, 3, 5 and 6, in the automatic effusion drainage device, the driving motor 14 has two power output modes of 'forward output' and 'reverse output', and the two power output modes can promote the extrusion mechanism to complete two different effects on the drainage tube 17; the above-mentioned "forward direction" and "reverse direction" are only relative terms, and are only a reference of a power output direction set for convenience of description, because in the concrete implementation, the matching manner of the driving motor 14, the transmission mechanism, the squeezing mechanism and the drainage tube 17 is not limited to a specific one, and in the matching implementation with different components, the actual turning direction of the output shaft of the driving motor 14 during the fluid output is not necessarily the same, and at the same time, in the matching implementation with different components, the actual turning direction of the output shaft of the driving motor 14 during the fluid suction is not necessarily the same; therefore, in the automatic liquid accumulation drainage device, the output state when the drive motor 14 causes the fluid to be output is defined as "forward output", and conversely, the output state is defined as "reverse output".

Referring to fig. 5, 6 and 10, when the automatic effusion drainage device is clinically used, in the negative pressure drainage process, the driving motor 14 under the control of the controller causes the longitudinal pressing block 5 and the two transverse pressing blocks 9 to perform corresponding extrusion action on the drainage tube 17 according to a specific rule, so that negative pressure drainage is realized and the negative pressure drainage state can be controlled; in the negative pressure drainage process, the structure that vertical briquetting 5, two horizontal briquetting 9 and lie in two drainage tubes 17 of putting in the pipe clearance and constitute can be regarded as a displacement pump, and theory of operation is very similar with the diaphragm pump, and based on this, drainage adjusting part can realize the negative pressure drainage and can carry out corresponding control to the negative pressure drainage state under the regulation and control of controller, and concrete theory of operation is as follows:

outputting the fluid:

after the primary fluid suction is finished, the longitudinal pressing block 5 is positioned at a position for extruding the leading-out end of the drainage tube 17 to a blocking state, and the two transverse pressing blocks 9 are positioned at an initial position; when the controller enables the driving motor 14 to carry out forward output, the transmission mechanism drives the longitudinal pressing block 5 to extrude the introducing end of the drainage tube 17 to a blocking state, then drives the transverse pressing block 9 to respectively extrude the drainage tube 17 in the gap between the two arranged tubes, the volume of the drainage tube 17 in the gap between the two arranged tubes is gradually reduced, and the internal accumulated liquid flows to the direction of the drainage bag 18 through the leading-out end, so that the fluid output is realized; in the process that the longitudinal pressing block 5 moves from the leading-out end to the leading-in end, a unblocked period exists when the leading-in end, the leading-out end and the drainage tube 17 between the leading-in end and the leading-out end are all in a conducting state, but generally, a one-way valve mechanism for preventing the backflow of fluid basically exists in the conventional common drainage assembly, so that the backflow of the fluid in the drainage tube 17 in the unblocked period can be prevented; in the other step, even if the drainage assembly does not have the function of enabling the fluid to flow in a single direction, the technical requirement of preventing the fluid from flowing back can be easily met by adding the existing one-way valve mechanism at the joint of the drainage tube 17 and the drainage bag 18;

fluid intake:

after the primary fluid output is finished, the longitudinal pressing block 5 is positioned at the position for extruding the leading-in end of the drainage tube 17 to be in a blocking state, the two transverse pressing blocks 9 are respectively positioned at the position for extruding the drainage tube 17 in the gap between the two tubes to be in the blocking state, and the drainage tube 17 in the gap between the two tubes is in a flattened state; when the controller enables the driving motor 14 to reversely output, the transmission mechanism drives the longitudinal pressing block 5 to extrude the leading-out end of the drainage tube 17 to a blocking state, then drives the two transverse pressing blocks 9 to approach and finally reset to an initial position, the drainage tube 17 in the tube placing gap gradually recovers to be cylindrical by virtue of elasticity of the drainage tube 17, and accumulated liquid enters the drainage tube 17 in the tube placing gap from the leading-in end along with the gradual increase of the volume, so that the fluid suction is realized; meanwhile, the effusion in the human body also enters the drainage tube 17 along with the suction of the fluid;

the realization of negative pressure drainage:

under the control of the controller, when the fluid output and the fluid suction are alternately carried out, the fluid in the drainage tube 17 can be ensured to flow towards the drainage bag all the time, thereby realizing the negative pressure drainage;

adjusting the negative pressure drainage state:

when the controller enables the driving motor 14 to work in the manner, the negative pressure drainage is realized; when the driving motor 14 stops working and the leading-out end of the drainage tube 17 is extruded to a blocking state by the longitudinal pressing block 5, the negative pressure drainage is suspended or ended; when the frequency of the fluid output and the fluid suction is increased and the duration of the fluid output and the fluid suction is shortened, the drainage speed can be increased, and otherwise, the drainage speed is reduced.

Referring to fig. 8 and 9, in the automatic effusion drainage apparatus, the weight-measuring suspension support assembly 3 has two functions, on one hand, the weight-measuring suspension support assembly 3 provides stable support for the drainage bag 18, so that the drainage bag 18 is in a suspension shape and has a basic function of containing drainage effusion in the drainage process, and on the other hand, the weighing sensor 16 in the weight-measuring suspension support assembly 3 can output a weight signal reflecting the weight change state of the effusion in the drainage bag 18 in the drainage process, so as to provide basic data for data processing of the controller; meanwhile, the weight-counting type suspension support component 3 can also adjust the height of the drainage bag 18 within a certain range, so that after the drainage bag 18, the drainage tube 17 and the automatic effusion drainage device are combined, the part of the drainage tube 17 between the lead-out groove 4 and the drainage bag 18 can be adjusted to be in a natural extension shape; in terms of the prior art, the weight-measuring suspension support assembly 3 can be obtained by slightly improving the structure of the existing electronic scale, and the specific structure has various implementation modes; however, in order to make the weighing suspension support assembly 3 more compact and more stable under the condition that it satisfies the above requirements, the weighing suspension support assembly 3 is preferably implemented by adopting the following structure:

as shown in fig. 11, the weight-measuring suspension assembly 3 includes a sliding sleeve 20, a weighing rod 21, a load cell 16 and a suspension portion 13; the sliding sleeve 20 is fixed on the placing plate 6, an inner cavity with an open lower end and a blind upper end is arranged on the sliding sleeve 20, the middle upper part of the weighing rod 21 is positioned in the sliding sleeve 20, the sliding sleeve 20 and the weighing rod 21 can only slide up and down relatively, and the weighing sensor 16 is fixed in the sliding sleeve 20 and provides upward support for the weighing rod 21; the upper end of the suspension part 13 is connected with the lower end of the weighing rod 21 in an inserting way, and a locking mechanism 19 for locking the relative positions of the suspension part and the weighing rod is arranged between the suspension part and the weighing rod; after the drainage bag 18 is fixedly connected with the hanging part 13, the weighing sensor 16 can pick up the weight change state of the accumulated liquid in the drainage bag 18 and output a corresponding weight signal;

in addition, generally speaking, most of the drainage bags 18 in clinical use at present are provided with a hanging ring at the top for convenient hanging, so that the lower end of the hanging part 13 can be provided with a hook 22 for matching with the hanging ring of the drainage bag 18, and in order to prevent the drainage bag 18 and the hanging part 13 from rotating relatively, the hook 22 can be made of a bent strip-shaped material; meanwhile, the lower end of the hanging part 13 can also be provided with a clamping mechanism which can clamp and fix the upper end of the drainage bag 18;

in the structure of the weight-counting suspension support assembly 3, the suspension part 13 cannot rotate relative to the placing plate 6, so that stable support can be provided for the drainage bag 18, and the phenomenon that the weight counting is not accurate due to the rotation or shaking of the drainage bag 18 in the drainage process is avoided; the hanging part 13 and the weighing rod 21 can transmit the weight change of the accumulated liquid in the drainage bag 18 to the weighing sensor 16; the hanging part 13 can be adjusted in position in the vertical direction so as to adjust the height of the drainage bag 18; the structure meets the basic function requirement of the weight-measuring type suspension support component 3, and has the advantages of simple structure, accurate measurement, small size, compactness and easy implementation.

Referring to fig. 5 and 6, when the automatic effusion drainage device is clinically used, in the negative pressure drainage process, the drainage tube 17 deforms through the self elastic capacity to provide necessary pressure for negative pressure drainage, generally speaking, the drainage tube 17 clinically used at present has better elasticity, in the initial stage of negative pressure drainage, the elastic performance of the drainage tube 17 is optimal, the negative pressure requirement can be met, but as the extrusion times increase, the elastic performance of the drainage tube 17 positioned in the tube placing gap is weakened, and the maximum negative pressure provided by the self elastic capacity is reduced; however, in the use process of the automatic effusion drainage device, the automatic effusion drainage device can be placed at a position lower than a patient, in addition, the extrusion mechanism acts on the middle lower part of the drainage tube 17, the gravitational potential energy of effusion in the drainage tube 17 can relieve the required negative pressure requirement in the drainage process, the additionally provided negative pressure is smaller in the situation, and even if the elasticity of the drainage tube 17 in the tube placing gap is weakened, enough negative pressure can be still provided for negative pressure drainage.

Referring to fig. 9 and 10, in the clinical use of the automatic effusion drainage device, the weight of the drainage bag 18 and the effusion inside the drainage bag is almost completely borne by the hanging part 13, that is, almost the entire weight of the drainage bag 18 and the effusion inside the drainage bag is finally transmitted to the weighing sensor 16 through the hanging part 13, the weights of the hanging part 13 and the drainage bag 18 after installation are constant and unchangeable in the drainage process, so that the weight change sensed by the weighing sensor 16 is all caused by the increase of the effusion in the drainage bag 18, therefore, the controller can calculate the effusion weight actually drained in unit time, that is, the real-time drainage speed, and can calculate the accumulated weight increase of the effusion in the drainage bag 18 during the period from the beginning of drainage to the present time, that is, the single real-time drainage quantity, therefore, the technical requirement that the controller can calculate the real-time drainage speed and the single real-time drainage quantity based on the weight signal continuously fed back by the weighing sensor 16 in real time can be realized by adopting the prior art;

based on the working principle adopted by the automatic effusion drainage device, a certain time interval exists between two adjacent effusion outputs in the drainage process, namely the effusion flows in a pulse mode, so that the unit time based on which the controller calculates and obtains the data of the real-time drainage speed is not too short, and the controller is better to generate at least two fluid outputs in one unit time; in addition, although the effusion is pulsed in the drainage process, the effusion generally does not bring discomfort to the patient, and the pulse feeling generated in the drainage process can be reduced by additionally arranging a buffer container on the drainage tube 17.

Referring to fig. 8 and 9, when the automatic effusion drainage device is clinically used, the drainage bag 18 is fixedly connected with the tail end of the drainage tube 17 in the drainage process, the drainage tube 17 inevitably generates a certain acting force on the drainage bag 18, the acting force may change along with the deformation of the drainage bag 18, and the force and the change of the force are inevitably picked up by the weighing sensor 16 and fed back to the controller, so that certain influence is caused on the data accuracy of the real-time drainage speed and the single real-time drainage quantity; however, in the automatic effusion drainage device, before clinical drainage is implemented, the height of the drainage bag 18 can be adjusted through the weight-measuring type suspension support assembly 3, so that the part of the drainage tube 17, which is positioned between the lead-out groove 4 and the drainage bag 18, is in a natural extension state, the acting force of the lower end of the drainage tube 17 on the drainage bag 18 can be reduced, and the acting force between the drainage tube 17 and the drainage bag 18 tends to be constant, thereby reducing the influence of the factors on the data accuracy of the real-time drainage speed and the single real-time drainage quantity to the maximum extent.

Referring to fig. 8 and 9, in the automatic effusion drainage device, the weighing sensor 16 can pick up the change state of the effusion weight in the drainage bag 18, and output a weight signal according to the change state to provide a data basis for the controller to calculate parameters such as real-time drainage speed, single real-time drainage quantity and the like, so that the accuracy of the weight signal output by the weighing sensor 16 is a key factor influencing whether the automatic effusion drainage device can accurately control the drainage process; the weight metering function part in the weight metering type suspension support assembly 3 can be regarded as a conventional weight metering mechanism, and as is well known, the weight metering mechanism can stably and accurately work only in a specific direction, namely, the accuracy of a weight signal output by the weighing sensor 16 can be ensured only when the automatic effusion drainage device is horizontally placed, otherwise, the gravity generated by effusion in the drainage bag 18 is decomposed, so that the weight signal output by the weighing sensor 16 is inaccurate; generally speaking, with the gradual improvement of ward conditions of medical units, the ground in the ward is relatively flat and tends to be horizontal, so when the automatic effusion drainage device is placed on the ground of the ward for use, the technical requirement of horizontal placement can be met, and the weight signal output by the weighing sensor 16 can be ensured to be relatively accurate;

step back, even if ground in the ward can not reach the requirement of tending to the horizontality, but the mode that the article were established to the pad in base 1 below is adjusted, makes automatic hydrops drainage device be the level and places, guarantees the accuracy nature of the weight signal of retransmission sensor output among the clinical drainage process.

In the automatic effusion drainage device, when the driving motor 14 outputs positive direction, the transmission mechanism firstly drives the longitudinal pressing block 5 to extrude the leading-in end of the drainage tube 17 to a blocking state, and then drives the two transverse pressing blocks 9 to be far away; when the driving motor 14 reversely outputs, the transmission mechanism firstly drives the longitudinal pressing block 5 to extrude the leading-out end to a blocking state, and then drives the two transverse pressing blocks 9 to approach; as for the prior art, the technical features are various embodiments, for example, as shown in fig. 12 and 13, the transmission mechanism may be composed of a transmission assembly a and a transmission assembly B, the transmission assembly a is used for driving the longitudinal pressing block 5 to move, the transmission assembly B is used for driving the two transverse pressing blocks 9 to move away from and close to each other, the transmission assembly a is in transmission connection with the driving motor 14 through the torque limiter, the transmission assembly B is in transmission connection with the driving motor 14 through a clutch mechanism, and the clutch mechanism is automatically switched to the closed state when the torque limiter is in the overload protection state; as shown in fig. 12, when the driving motor 14 outputs, power is preferentially transmitted to the transmission assembly a, the transmission assembly a drives the longitudinal pressing block 5 to move, the clutch mechanism is in a separation state, so that the transmission assembly B has no power input, and the two transverse sliding blocks 9 cannot move; as shown in fig. 13, after the longitudinal pressing block 5 presses the leading end of the drainage tube 17 to the blocking state, the transmission assembly a cannot continue to operate normally because the longitudinal pressing block 5 cannot continue to move, and then the torque limiter provides a constant torque force for the transmission assembly a, so that the longitudinal pressing block 5 keeps a constant position, and meanwhile, after the torque limiter is in the overload protection state, the clutch mechanism is switched to the closed state, and the transmission assembly B is driven by the driving motor 14 to drive the two transverse pressing blocks 9 to move away from and close to each other; thus, the technical purpose can be achieved;

the transmission assembly A and the transmission assembly B are transmission mechanisms with the function of converting rotary motion into linear motion, the torque limiter and the clutch mechanism are conventional transmission mechanisms commonly used in the electromechanical field, and the working state of the clutch mechanism is determined by the working state of the torque limiter and is easy to realize by adopting the prior art.

Referring to fig. 5, 6 and 10, in the automatic effusion drainage device, the controller can make the driving motor 14 alternately perform forward output and reverse output, and make the fluid output and the fluid suction alternately perform, thereby realizing negative pressure drainage; in terms of the existing electromechanical control technology, it is not difficult to achieve the above technical purpose, for example, the driving motor 14 adopts a servo motor, the controller can control the output rotation angle and the output direction of the output shaft of the servo motor, in the negative pressure drainage process, the controller enables the driving motor 14 to perform forward output and reverse output according to a preset rotation angle, and after each fluid output is completed, namely after the two transverse press blocks 9 respectively extrude the drainage tubes 17 in the two tube placing gaps to a blocking state, the driving motor 14 does not continue to output in the forward direction, but switches to output in the reverse direction; after the fluid suction is finished each time, namely after the two transverse pressing blocks 9 are reset to the initial positions, the driving motor 14 does not continue to output reversely, but is switched to output in the forward direction; therefore, the alternation of fluid output and fluid suction can be realized; the specific angle value corresponding to the aforementioned "predetermined rotation angle" is easily determined by calculation and adjustment.

Referring to fig. 7 and 10, in the automatic effusion drainage device, when normal pressure drainage is performed, the controller enables the driving motor 14 to operate at a low speed, and adjusts the extrusion degree of the longitudinal pressing block 5 to the leading-in end on the premise that the two transverse pressing blocks 9 are kept at the initial positions; in the case of the existing electromechanical control technology, it is not difficult to achieve the above technical objectives, for example, the driving motor 14 is a servo motor, and the controller can control the output rotation angle, the output direction and the rotation speed of the output shaft of the servo motor; in the normal-pressure drainage process, the controller enables the driving motor 14 to carry out forward output and reverse output in a preset rotation angle range, so that the longitudinal pressing block 5 can be adjusted in position between an initial position and a position where the leading-out end or the leading-in end can be extruded to a blocking state, and after the longitudinal pressing block 5 extrudes the leading-out end or the leading-in end to the blocking state, the driving motor 14 cannot continue to carry out output according to the current output direction; therefore, the two transverse pressing blocks 9 can be kept at the initial positions without extruding the drainage tube 17 in the adjusting process of the normal-pressure drainage state; the angle value corresponding to the aforementioned related rotation angle range is easy to be determined through calculation and debugging.

The automatic effusion drainage device adopts an intelligent design, and can realize functions of timed drainage, constant-speed drainage, quantitative drainage and the like according to preset drainage parameters in the clinical drainage operation, so that the aim of full-automatic drainage control is fulfilled, the labor burden is saved, and the safety, the stability and the accuracy of the drainage operation are improved; the automatic hydrops drainage device is matched with the conventional drainage bag and drainage tube for use, and the existing structures of the drainage bag and the drainage tube are not required to be changed, so that the automatic hydrops drainage device is easier to popularize and use; the automatic effusion drainage device has two working modes of normal-pressure drainage and negative-pressure drainage, can meet different drainage operation requirements of pleural effusion drainage, abdominal effusion drainage and the like, and has stronger applicability and wider application range; meanwhile, the automatic effusion drainage device has the advantages of small volume, convenient movement, convenient carrying, small occupied space, high flexibility and great clinical popularization value.

Example 2

Referring to fig. 9, in the automatic effusion drainage device disclosed in embodiment 1, the accuracy of the weighing signal output by the weighing sensor 16 is greatly influenced by whether the automatic effusion drainage device is horizontally placed; although the mode of establishing article through the pad below base 1 when meeting ground levelness relatively poor solves, nevertheless the operation is got up comparatively trouble, wastes time and energy, and for this reason, the automatic hydrops drainage device's that this embodiment discloses structure basis on, still has following improvement:

as shown in fig. 14 and 15, a first rotating shaft 25 extending horizontally and backwardly is fixed at the rear side of the installation plate 6, and a swing seat 24 is fixed by the first rotating shaft 25 and can swing left and right with a small amplitude; the upper end of the weight-measuring suspension support component 3 is connected with the swinging seat 24 through the second rotating shaft 23, so that the weight-measuring suspension support component 3 can swing back and forth in a small range; the first rotating shaft 25 and the second rotating shaft 23 are vertical to each other; when the drainage bag 18 is fixed by the hanging part 13, the weight-measuring type suspension support component 3 is driven by gravity to always maintain a specific direction, and the weight change state of the accumulated liquid in the drainage bag 18 can be accurately picked up by the weight sensor 16 in the specific direction;

after the automatic effusion drainage device is improved by adopting the structure, the weight-measuring suspension support component 3 has a direction automatic adjusting mechanism, even if the automatic effusion drainage device is not horizontally arranged in clinical use, the weight-measuring suspension support component 3 can automatically adjust to and maintain a specific direction through left-right swinging and front-back swinging, so that the weighing sensor 16 can stably and accurately work;

in the improved structure, the swing seat 24 can swing left and right in a small range, the weight-measuring suspension assembly 3 can swing front and back in a small range, and the front and back swing and the left and right swing are both in a small range, which is intended to limit the change of the relative position of the mounting plate 6 and the weight-measuring suspension assembly 3 within a small range, and avoid the inconvenience for the operation of mounting, carrying and the like of the automatic effusion drainage device caused by the unstable relative position of the mounting plate 6 and the weight-measuring suspension assembly 3; the specific swing angle range of the small amplitude has no accurate requirement, and the purpose is to ensure that the automatic effusion drainage device can stably and accurately work under most ground conditions;

meanwhile, the technical requirements that the weight-measuring suspension assembly 3 and the swinging seat 24 can only swing back and forth and swing left and right within a small amplitude range respectively can be easily realized by arranging corresponding angle limiting mechanisms 26 between the weight-measuring suspension assembly 3 and the swinging seat 24 and between the swinging seat 24 and the mounting plate 6;

for the technical requirement that the weight-measuring type suspension support assembly 3 can be automatically adjusted to and maintained in a specific direction under the drive of gravity, when the automatic effusion drainage device is manufactured, the specific structural form of the weight-measuring type suspension support assembly 3 is debugged, and a standard operation mode is set for the connection mode of the suspension part 13 and the drainage bag 18, so that the technical requirement is realized without difficulty; the specific direction refers to that the gravity generated by the accumulated liquid in the drainage bag 18 tends to be totally fed back to the weighing sensor 16 under the direction of the weight-measuring type suspension support assembly 3, so that the weighing sensor 16 can accurately pick up the weight change state of the accumulated liquid in the drainage bag 18.

Example 3

Drainage is a medical means which is commonly used in clinic at present, the clinical drainage process is mostly carried out in a ward, and an automatic hydrops drainage device needs to be frequently moved back and forth between wards and instrument rooms; when the automatic effusion drainage device disclosed by the embodiment is clinically used, as shown in fig. 1 and 2, the whole device can be stably supported by the base 1, the base 1 is necessarily large and heavy, the automatic effusion drainage device is labor-consuming to move integrally and is influenced by the base 1, the automatic effusion drainage device is large in integral volume, large in occupied space during use and poor in flexibility;

generally speaking, the infusion support is a necessary medical device in a ward, the structure is relatively simple, the occupied space is small, and if the automatic effusion drainage device can be used with the infusion support by removing a heavy base 1 part, a great deal of convenience is brought to the clinical drainage operation; based on the above reasons, the present embodiment has further improvements to the clinical drainage control device disclosed in the foregoing embodiments, and the specific implementation structure is as follows:

referring to fig. 16 and 17, the automatic effusion and drainage device further comprises a clamping member 28 which can be clamped and fixed on an infusion rod 32 of an infusion support; a combined seat 31 is arranged at the rear side of the placing plate 6, and the combined seat 31 is connected with the upper end of the upright post 2 in a detachable way; an assembling mechanism is arranged between the clamping member 28 and the combined seat 31, and when the clamping member 28 is connected with the combined seat 31, the automatic effusion drainage device can be supported by the transfusion rod 32 to work; the combined seat 31 and the upright post 2 can adopt an inserting structure to realize the technical purpose of disassembly and assembly, and the disassembly and assembly operation is more convenient;

from this one, in clinical use, automatic hydrops drainage device can not rely on base 1 to provide the support, and can cooperate the infusion support that the ward all possessed usually to carry out work for automatic hydrops drainage device's removal is more convenient, uses more in a flexible way, and the operation is more convenient.

In the above improved structure, the fastening member 28 and the combination seat 31 can be connected by means of the assembling mechanism, in order to ensure that the fastening member 28 can provide sufficient and stable support for the automatic effusion drainage device, as for the prior art, the assembling mechanism has various embodiments, but in order to ensure the stability and the convenience of disassembling and assembling after the fastening member 28 and the combination seat 31 are combined, the assembling mechanism preferably adopts the following design, and the specific structure is as follows:

as shown in fig. 16, the assembling mechanism is composed of a T-shaped groove 30 disposed on one side of the combining seat 31 and a T-shaped rib 29 disposed on the clamping member 28, the T-shaped groove 30 extends up and down, the upper end is a blind end, the lower end is an open end, the T-shaped rib 29 and the T-shaped groove 30 can be combined, and a damping pad 27 for clamping the T-shaped groove 30 is disposed at the lower end of the T-shaped rib 29;

referring to fig. 16 and 17, based on the above structure adopted by the assembling mechanism, the T-shaped rib 29 of the clamping member 28 is inserted into the T-shaped groove 30 of the combination seat 31 from bottom to top, so that the assembly of the combination seat 31 and the clamping member 28 is completed, otherwise, the combination seat 31 and the clamping member 28 can be separated; when the T-shaped rib 29 and the T-shaped groove 30 are completely combined, the damping pad 27 tightly clamps the T-shaped groove 30 to lock the relative positions of the T-shaped rib 29 and the T-shaped groove 30, thereby preventing the clamping member 28 from being separated from the combination seat 31.

Referring to fig. 17, in the above improved structure, the fastening member 28 is used for fastening and matching with the infusion rod 32 to provide a stable support for the automatic effusion drainage device, and as far as the prior art is concerned, the fastening member 28 has various embodiments, for example, a clamping mechanism for clamping the infusion rod 32 may be arranged on the fastening member 28, or a C-shaped clamp may be arranged on the fastening member 28, and fastening screws are additionally arranged on the clamping mechanism and the C-shaped clamp, and an anti-slip gasket is additionally arranged on a contact surface with the infusion rod 32 to improve the stability after the fastening member 28 and the infusion rod 32 are combined; although the clamping piece 28 can meet the basic technical requirement of providing support for the automatic effusion drainage device by adopting the structure, the clamping piece has the defects of not simple structure, not beautiful appearance, troublesome use and the like; meanwhile, generally speaking, the types of infusion supports used by the same medical institution are mostly the same, that is, the diameters of the infusion rods 32 are the same, but no exception exists, and the implementation structure adopted by the clamping member 28 is difficult to be compatible with the infusion rods 32 with different sizes for use, and certain limitations are certainly formed in clinical use; therefore, the present embodiment also provides a novel implementation manner for the fastener 28, and the specific structure is as follows:

as shown in fig. 18 and 19, a clamping opening 39 for accommodating the infusion rod 32 is formed in one side of the clamping member 28, two opposite side walls of the clamping opening 39 are respectively provided with a limiting seat 33, a floating holding block 34 is respectively arranged in the limiting seat 33, opposite end portions of the two floating holding blocks 34 are arc-shaped ends 38, end surfaces of the two arc-shaped ends 38 are both arc-shaped and are respectively fixed with an anti-skid rubber pad 35, and the two arc-shaped ends 38 are respectively used for holding two sides of the infusion rod 32; the floating holding block 34 and the limiting seat 33 are matched through a guide mechanism formed by the sliding chute 36 and the sliding block 37, so that the floating holding block 34 has an oblique floating stroke, when the two floating holding blocks 34 move upwards along respective floating strokes simultaneously, the two arc-shaped ends 38 gradually approach and enter the clamping opening 39, and when the two floating holding blocks 34 move downwards along respective floating strokes simultaneously, the two arc-shaped ends 38 gradually depart and finally retract into the corresponding limiting seats 33; the two limiting seats 33 are respectively provided with a return spring 40 which drives the corresponding floating holding block 34 to return to the uppermost end of the floating stroke;

as shown in fig. 19, after the clamping member 28 adopts the above structure, the clamping port 39 of the clamping member 28 is clamped outside the infusion rod 32, the two floating holding blocks 34 can clamp and hold the infusion rod 32 tightly from two opposite sides of the infusion rod 32, the weight of the automatic effusion drainage device can generate a downward acting force on the clamping member 28, and the two floating holding blocks 34 can respectively receive horizontal component force to further hold the infusion rod 32 tightly, in short, the larger the weight borne by the clamping member 28 is, the firmer the two floating holding blocks 34 hold the infusion rod 32 tightly, so that the relative movement between the clamping member 28 and the infusion rod 32 can be avoided, and the stability after the clamping member 28 and the infusion rod 32 are combined can be improved;

meanwhile, because the two floating holding blocks 34 have certain floating strokes, the distance between the two floating holding blocks can be automatically adjusted according to the different diameters of the transfusion rods 32, the applicability of the clamping member 28 is improved to a certain extent, and the clamping member can be matched with various transfusion rods 32 with different diameters for use.

Example 4

Referring to fig. 5, 6 and 7, in the automatic effusion drainage device disclosed in the foregoing embodiment, in the clinical drainage process, the drainage state is adjusted and controlled by extruding the drainage tube 17 in the tube gap by the longitudinal pressing block 5 and the two transverse pressing blocks 9 in different manners, so that the drainage tube 17 in the tube gap can be stably matched with the drainage adjusting assembly, which is a necessary condition for ensuring the stable operation of the automatic effusion drainage device; in the automatic hydrops drainage device disclosed in the foregoing embodiment, in order to facilitate the drainage tube 17 to make up and separate with the drainage regulating assembly, introduce groove 7, draw out groove 4 and put a tub clearance front side and all be open, there is drainage tube 17 from putting the risk of tub clearance front side slippage in the drainage process to the stability of automatic hydrops drainage device work has been reduced, for solving above-mentioned problem, this embodiment has further improvement to automatic hydrops drainage device:

as shown in fig. 20 and 21, a cover plate 44 is disposed on the front side of the installation plate 6, the inner end of the cover plate 44 is rotatably connected to the installation plate 6 through a hinge shaft 42, two pressing blocks 41 are disposed on one side wall of the cover plate 44, and the cover plate 44 has two station states and can be switched between the two station states by turning over; when the cover plate 44 is turned to a station state, the cover plate covers the front sides of the tube placing gap, the longitudinal pressing block 5 and the two transverse pressing blocks 9, and the two pressing and holding blocks 41 are respectively pressed into the introducing groove 7 and the leading-out groove 4 to firmly clamp and fix the drainage tube 17; when the cover plate 44 is turned to another station state, it covers the front sides of the display screen 12 and the setting keys 11; a locking mechanism 43 which can lock the cover plate 44 at two stations respectively is arranged between the cover plate 44 and the setting plate 6;

therefore, in the drainage process, as shown in fig. 20, the front side opening of the tube placing gap can be plugged by the cover plate 44, and the drainage tubes 17 led into the groove 7 and the lead-out groove 4 are respectively pressed by the two pressing blocks 41, so that the drainage tubes 17 can be prevented from slipping from the tube placing gap in the drainage process, the working stability of the automatic effusion drainage device is improved, meanwhile, external foreign matters can be prevented from entering the tube placing gap by the cover plate 44 in the drainage process, and the working accuracy of the automatic effusion drainage device is improved; when drainage is not performed, as shown in fig. 21, a better protection effect can be provided for the display screen 12 and the setting key 11 by the cover plate 44, so that damage to vulnerable electronic components such as the display screen 12 and the setting key 11 in the moving and idle processes of the automatic effusion drainage device is avoided.

Referring to fig. 20 and 21, in the above improved structure, a locking mechanism 43 is provided between the cover plate 44 and the setting plate 6, and the locking mechanism 43 is used for locking and maintaining the cover plate 44 in a two-station state respectively, that is, when the cover plate 44 is in a one-station state, the relative position of the cover plate 44 and the setting plate 6 can be locked by the locking mechanism 43, so that the cover plate 44 is maintained in the station state, and the corresponding function is exerted; based on this, as for the prior art, the locking mechanism 43 has various embodiments to satisfy the basic functions expected for the locking mechanism, but if the prior art is adopted for implementation, the above-mentioned embodiments have certain disadvantages, or the operation is not convenient enough, and the locking and unlocking are required to be performed manually, or the locking failure is easy to occur, or the mating member is complex, the service life is short, and so on, for this reason, a novel locking mechanism 43 is further provided in this embodiment, and its specific implementation structure is as follows:

as shown in fig. 22, the locking mechanism 43 includes a tongue 48 movably limited on the cover plate 44 and two locking magnetic sheets 45 installed on the installation plate 6, a strong magnet 47 is installed on the tongue 48, when the tongue 48 is in a reset state, the outer end of the tongue 48 is exposed outside the outer end of the cover plate 44, and a spring 46 for driving the tongue 48 to automatically reset is installed in the installation plate 6; when the tongue piece 48 is in a reset state and the cover plate 44 is in a working position state, the strong magnet 47 is positioned right above the corresponding locking magnet 45, and at the moment, the relative positions of the cover plate 44 and the placing plate 6 are locked by the strong magnet 47 and the locking magnet 45 through adsorption force; when the cover plate 44 is in a working position state, the tongue piece 48 is manually pushed to move inwards, so that the strong magnetic block 47 can be staggered with the corresponding locking magnetic sheet 45, the locking effect is relieved, and the cover plate 44 can be turned over;

after the locking mechanism 43 adopts the above structure and the cover plate 44 is adjusted to a station state, the strong magnetic block 47 and the corresponding locking magnetic sheet 45 lock the cover plate 44 through a large adsorption force, so that the cover plate 44 can play an expected function, although the strong magnetic block 47 and the locking magnetic sheet 45 have a large adsorption force when keeping the opposite direction, the shearing resistance is poor, therefore, when the station of the cover plate 44 needs to be adjusted, the tongue piece 48 can be easily pushed to move inwards, and then the strong magnetic block 47 and the corresponding locking magnetic sheet 45 are staggered, and the adsorption force between the two is greatly reduced, so that the cover plate 44 can be easily turned over to adjust the station state; the locking mechanism 43 has the advantages of ingenious structural design, stable work, easy implementation and no jamming fault, and overcomes the defects of the prior similar technology.

Example 5

Referring to fig. 5 and 6, in the automatic effusion drainage device disclosed in the foregoing embodiment, when negative pressure drainage is performed, in the process that the longitudinal pressing block 5 moves from the leading end to the leading end, there is a unblocked period in which the leading end, the leading end and the drainage tube 17 between the leading end and the leading end are all in a conducting state, but most of the conventional and commonly used drainage assemblies have a one-way valve mechanism for preventing fluid backflow, so that the fluid backflow can be prevented in the unblocked period; however, the exceptional situation is not lacked, when negative pressure drainage is carried out and the drainage assembly does not have the function of preventing backflow of fluid, backflow of fluid in the unblocked period is avoided by adding the one-way valve mechanism, and stable operation of negative pressure drainage can be guaranteed.

In the prior art, a one-way valve mechanism is a device commonly used in the field of fluid delivery, but has the problems that the conventional one-way valve mechanism is reset to a cut-off state through an elastic part, so that the conduction of the conventional one-way valve mechanism requires that internal fluid reaches higher pressure, the technical requirement of an automatic effusion drainage device for negative pressure drainage can be met, but certain resistance to effusion flow is not avoided, and the adoption of the one-way valve mechanism with lower working pressure can enable normal pressure drainage to be carried out, but the adjustable range of the drainage speed in normal pressure drainage is reduced; based on this, the automatic hydrops drainage device that this embodiment disclosed still includes an one-way output joint, and this one-way output joint design science is installed between drainage tube and drainage bag, can guarantee going on that negative pressure drainage and ordinary pressure drainage homoenergetic are stable, and its concrete implementation structure is:

referring to fig. 23, 24 and 25, the one-way output connector comprises a main body 61, an input port 64 is arranged at the upper end of the main body 61 and is connected with the lower end of the drainage tube, and an output port 59 is arranged at the lower end and is connected with the drainage bag 18; a column cavity 63 is formed in the main body 61, a liquid inlet hole 60 is formed in the bottom of the column cavity 63, a liquid discharging hole 66 is formed in the side wall of the middle lower part, and a vent hole 65 communicated with the atmosphere is formed in the upper end of the column cavity; the inlet 64 is communicated with the liquid inlet hole 60 through a flow passage, and the liquid outlet hole 66 is communicated with the outlet 59 through a flow passage; a floating ball 62 with a smooth surface is arranged in the valve cavity, a gap is formed between the floating ball 62 and the side wall of the column cavity 63, so that the liquid discharge hole 66 is always communicated with the vent hole 65, and the floating ball 62 sinks to the bottom of the column cavity 63 and then can be in sealing fit with the liquid inlet hole 60; when the liquid accumulation exists in the column cavity 63, the floating ball 62 floats on the upper surface of the liquid accumulation in the column cavity 63 to communicate the liquid inlet hole 60, the liquid outlet hole 66 and the vent hole 65, and when the liquid accumulation does not exist in the column cavity 63, the floating ball 62 sinks by gravity to seal the liquid inlet hole 60;

(1) as shown in fig. 23 and 24, when fluid is output and the fluid is accumulated, the accumulated fluid pushes the floating ball 62 upward and enters the column cavity 63 through the liquid inlet hole 60, the floating ball 62 rises with the increase of the accumulated fluid in the column cavity 63, the accumulated fluid in the column cavity 63 is discharged through the liquid discharge hole 66 and finally flows into the drainage bag 18, and the accumulated fluid does not overflow through the air hole 65 because the air hole 65 is higher than the liquid discharge hole 66; after the primary fluid output is finished, the accumulated liquid in the valve cavity can continuously flow into the drainage bag 18 because the drain hole 66 is communicated with the vent hole 65, the floating ball 62 sinks along with the decrease of the accumulated liquid in the column cavity 63, and if the accumulated liquid in the drainage tube flows back, the accumulated liquid in the column cavity 63 disappears, so that the floating ball 62 sinks to the bottom of the column cavity 63 to seal the liquid inlet hole 60, and the accumulated liquid in the drainage tube is prevented from flowing back;

(2) as shown in fig. 25, when the fluid is outputted and the fluid is air, the air pushes the floating ball 62 to rise and enter the column cavity 63 through the liquid inlet hole 60, then continuously flow upward through the gap between the floating ball 62 and the column cavity 63, and finally is discharged to the outside, if the drainage bag 18 is provided with an exhaust pipeline, part of the air in the column cavity 63 is also discharged into the drainage bag 18 through the liquid outlet hole 66, and finally is discharged to the outside through the exhaust pipeline of the drainage bag 18; after the primary fluid output is finished, the floating ball 62 sinks to the bottom of the column cavity 63 by means of self-weight to block the liquid inlet hole 60, so that air in the drainage tube is prevented from flowing back;

after the unidirectional output joint adopts the design, the unidirectional output joint has the unidirectional output characteristic of fluid, and can meet the technical requirements of negative pressure drainage and normal pressure drainage; in addition, because the floating ball 62 can float on the accumulated liquid, the density is low, the pressure required by the conduction of the floating ball is small, namely the working pressure is low, the flowing of the accumulated liquid can not be excessively hindered in the drainage process, and particularly in the normal-pressure drainage, the adjustable range of the drainage speed can be furthest improved;

meanwhile, the one-way output joint is reset to the cut-off state based on the gravity of the floating ball 62, and the reset force is not required to be provided by an additional elastic piece, so that the structure is simple, the working stability of the one-way output joint is ensured, and the service life is prolonged.

Example 6

Referring to fig. 5, 6 and 10, in the automatic effusion drainage device disclosed in the foregoing embodiment, the transmission mechanism can perform corresponding driving actions on the longitudinal pressing block 5 and the two transverse pressing blocks 9 according to the output state of the driving motor 14, and a specific implementation has been described in embodiment 1, although the foregoing transmission mechanism can achieve basic technical requirements, there are defects of many related parts, high precision requirement, not compact enough structure, poor stability and the like, and for this reason, the present embodiment provides a transmission mechanism with a more scientific, stable and compact structural design, and a specific implementation manner is as follows:

as shown in fig. 26, 27 and 28, the transmission mechanism includes a first screw 49 and a second screw 50 which are arranged in parallel and are supported by the setting plate 6; the first screw 49 and the first nut 52 form a screw pair, one end of the first screw 49 is in transmission connection with the driving motor 14, a shaft sleeve 53 is arranged outside the first nut 52, the central axes of the first screw and the first nut coincide, the axial position of the first screw and the first nut are relatively fixed, a damping mechanism 57 which provides rotary resistance for the first nut 52 and the shaft sleeve 53 is arranged between the first nut 52 and the shaft sleeve 53, the shaft sleeve 53 provides guiding action through a guide block 51 and only can axially move along the first screw 49, the shaft sleeve 53 is fixedly connected with the longitudinal pressing block 5, two sides of the first nut 52 are respectively provided with a front driving wheel 54, the two front driving wheels 54 are sleeved outside the first screw 49, the central axes of the two front driving wheels 54 and the three coincide, the two front driving wheels 54 and the first screw 49 can relatively rotate, but the axial relative positions of the three are fixed, and anti-slip parts 58 are arranged on the; the second screw 50 is a bidirectional screw, that is, a left-handed thread section and a right-handed thread section are arranged on the rod body, the left-handed thread section and a second nut 56 form a screw pair, the right-handed thread and another second nut 56 form a screw pair, the two second nuts 56 respectively provide a guiding effect through a guide block 51 and only can move axially along the second screw 50, the two second nuts 56 are respectively and fixedly connected with the two transverse press blocks 9, two rear transmission wheels 55 coaxial with the second screw 50 are fixed on the second screw 50, the two rear transmission wheels 55 are respectively in transmission connection with a front transmission wheel 54, and the rear transmission wheels 55 and the corresponding front transmission wheels 54 can realize transmission by adopting the existing modes of belts, gears and the like; as shown in fig. 26 and 29, when the drive motor 14 drives the first screw 49 to rotate by a forward output, the first nut 52 and the sleeve 53 will move axially in unison under the action of the damping mechanism 57, thereby driving the longitudinal pressing block 5 to move towards the leading-in end, when the first nut 52 is matched with the corresponding front driving wheel 54 by the anti-skid part 58, the longitudinal pressing block 5 just extrudes the leading-in end to a blocking state, and then the first nut 52 can not move continuously along the current direction, the first nut 52 overcomes the resistance provided by the damping mechanism 57 to drive the corresponding front driving wheel 54 to synchronously rotate along with the first screw 49, meanwhile, the rear driving wheel 55 is driven by the front driving wheel 54 to drive the second screw 50 to rotate, the two second nuts 56 respectively drive the two transverse pressing blocks 9 to be far away, and finally the two transverse pressing blocks 9 can simultaneously extrude the drainage tube 17 in the corresponding tube gap to be in a blocking state; as shown in fig. 26 and 30, when the driving motor 14 drives the first screw 49 to rotate by reverse output, the first nut 52 and the shaft sleeve 53 will synchronously move axially under the action of the damping mechanism 57, so as to drive the longitudinal pressing block 5 to move towards the leading-out end, when the first nut 52 is abutted and matched with the corresponding other front driving wheel 54 by the anti-slip portion 58, the longitudinal pressing block 5 just extrudes the leading-out end to a blocking state, and then the first nut 52 cannot move continuously in the current direction, the first nut 52 will overcome the resistance provided by the damping mechanism 57 and drive the corresponding front driving wheel 54 to synchronously rotate with the first screw 49, and meanwhile, the other rear driving wheel 55 is driven by the front driving wheel 54 to drive the second screw 50 to rotate, and the two second nuts 56 will respectively drive the two transverse pressing blocks 9 to approach, so as to finally, the two transverse pressing blocks 9 can be simultaneously reset to the initial positions; as shown in fig. 26 and 31, in the case that the first nut 52 is not in abutting engagement with the front driving wheel 54, the first nut 52 moves along the first screw 49, i.e. the position of the longitudinal pressing block 5 can be adjusted independently in the case that the two lateral pressing blocks 9 are not moved.

In the transmission mechanism, the damping mechanism 57 is used for providing proper rotation resistance for the first nut 52 and the shaft sleeve 53, and the rotation resistance can ensure that the first nut 52 cannot rotate relative to the shaft sleeve 53 before abutting against the front driving wheel 54, so that the longitudinal pressing block 5 can press the leading-in end or the leading-out end to a blocking state; when the first nut 52 abuts against the corresponding front driving wheel 54 and cannot move continuously, the aforementioned rotation resistance is overcome, so that the first nut 52 rotates synchronously with the first screw 49 and the shaft sleeve 53 is kept at a constant position; based on the above arrangement of the damping mechanism 57, the prior art implementation is not difficult, for example, the damping member may be a spring plunger mechanism disposed between the first nut 52 and the shaft sleeve 53 for locking the axial position of the first nut 52 and the shaft sleeve 53, or may be a non-slip mat disposed between the first nut 52 and the shaft sleeve 53 for increasing the rotation resistance of the first nut 52 and the shaft sleeve 53; when the transmission mechanism normally works, the required damping mechanism 57 provides the rotation resistance for the first nut 52 and the shaft sleeve 53, which can be easily determined through adjustment and control of specific parameters of the damping mechanism 57.

In the transmission mechanism, when the first nut 52 is abutted and matched with the corresponding front transmission wheel 54 through the anti-skid part 58, the longitudinal pressing block 5 just extrudes the leading-in end or the leading-out end to a blocking state; when the second screw 50 and the two second nuts 56 drive the two transverse pressing blocks 9 to be far away, the two transverse pressing blocks 9 can simultaneously extrude the drainage tube 17 in the corresponding tube gap to be in a blocking state; when the second screw 50 and the two second nuts 56 drive the two transverse pressing blocks 9 to approach, the two transverse pressing blocks 9 can be simultaneously reset to the initial positions; for the above technical features, it is not difficult to precisely control the dimensional parameters, relative positions, etc. of the respective components with respect to the matching relationship among the related components, such as the first screw 49, the first nut 52, the two front driving wheels 54, the longitudinal pressing block 5, the two second nuts 56, and the two transverse pressing blocks 9.

In the transmission mechanism, the anti-skid parts 58 are arranged on the opposite end surfaces of the first nut 52 and the two front transmission wheels 54; the anti-slip part 58 is used for improving the shearing force after the first nut 52 is abutted and matched with the front driving wheel 54, so that after the first screw 49 drives the first nut 52 to be abutted and matched with the front driving wheel 54, the first screw 49 continues to rotate according to the current direction, and the first nut 52 can drive the corresponding front driving wheel 54 to synchronously rotate; based on the arrangement of the anti-slip part 58, the anti-slip part 58 may be a friction plate disposed on the end surface of the first nut 52 opposite to the two front driving wheels 54, and the anti-slip part 58 may be a concave-convex abutting mechanism disposed on the end surface of the first nut 52 opposite to the two front driving wheels 54.

Claims

1. An automatic hydrops drainage device, its characterized in that, it includes:

2. An automatic fluid accumulation drainage device according to claim 1, wherein: the transmission mechanism comprises a first screw and a second screw which are arranged in parallel and are supported by the mounting plate; the first screw and the first nut form a screw pair, one end of the first screw is in transmission connection with the driving motor, a shaft sleeve is arranged outside the first nut, central shafts of the shaft sleeve and the first nut coincide, and the axial positions of the shaft sleeve and the first nut are relatively fixed; the second screw is a bidirectional screw, namely a left-handed thread section and a right-handed thread section are arranged on the rod body, the left-handed thread section and a second nut form a screw pair, the right-handed thread and another second nut form a screw pair, the two second nuts respectively provide a guiding effect through a guide block and can only move along the axial direction of the second screw, the two second nuts are respectively and fixedly connected with two transverse pressing blocks, two rear driving wheels coaxial with the second screws are fixed on the second screws, and the two rear driving wheels are respectively in transmission connection with a front driving wheel; when the driving motor drives the first screw rod to rotate through forward output, the first nut and the shaft sleeve synchronously and axially move under the action of the damping mechanism, so that the longitudinal pressing block is driven to move towards the leading-in end, when the first nut and the corresponding front driving wheel are abutted and matched through the anti-skidding part, the longitudinal pressing block just extrudes the leading-in end to be in a blocking state, the first nut cannot continuously move along the current direction, the first nut overcomes the resistance provided by the damping mechanism and drives the corresponding front driving wheel to synchronously rotate along with the first screw rod, meanwhile, the rear driving wheel is driven by the front driving wheel to drive the second screw rod to rotate, the two second nuts respectively drive the two transverse pressing blocks to be far away, and finally, the two transverse pressing blocks can simultaneously extrude the drainage tube in the corresponding tube placing gap to be in the blocking state; when the driving motor drives the first screw to rotate through reverse output, the first nut and the shaft sleeve synchronously and axially move under the action of the damping mechanism, so that the longitudinal pressing block is driven to move towards the leading-out end, when the first nut and the corresponding other front driving wheel are abutted and matched through the anti-skidding part, the longitudinal pressing block just extrudes the leading-out end to a blocking state, the first nut cannot continuously move in the current direction, the first nut overcomes the resistance provided by the damping mechanism to drive the corresponding front driving wheel to synchronously rotate along with the first screw, meanwhile, the other rear driving wheel is driven by the front driving wheel to drive the second screw to rotate, the two second nuts respectively drive the two transverse pressing blocks to approach, and finally, the two transverse pressing blocks can be simultaneously reset to the initial positions.

3. An automatic fluid accumulation drainage device according to claim 1 or 2, wherein: in the normal pressure drainage mode, the controller carries out automatic control to the operating condition of drainage adjusting part based on real-time drainage speed, single real-time drainage volume and preset drainage parameter, and concrete regulation and control mode is:

A. when the primary drainage is carried out, firstly, the controller regulates and controls the working state of the driving motor, so that the fluid output and the fluid suction are alternately carried out, the fluid in the drainage tube flows towards the direction of the drainage bag, when the weighing sensor senses the weight change, the controller enables the two transverse pressing blocks to reset to the initial positions, and adjusts the positions of the longitudinal pressing blocks, so that the leading-in end and the leading-out end of the drainage tube in the tube placing gap are kept in a conducting state, at the moment, the primary drainage is started, and the normal pressure drainage can be normally carried out by depending on the siphon effect; in each drainage thereafter, the controller adjusts the position of the longitudinal pressing block according to the preset initial time of each drainage, so that the drainage tube is in a conducting state, namely, the timed drainage is realized;

B. in the drainage process, the controller enables the driving motor to run at a low speed, and on the premise that the two transverse pressing blocks are kept at the initial positions, the extrusion degree of the longitudinal pressing blocks to the leading-in end of the drainage tube in the gap between the two transverse pressing blocks and the opposite tube is adjusted, so that the effusion speed in the drainage tube is increased or reduced, and finally the real-time drainage speed is approximately equal to the preset drainage speed, namely, the constant-speed drainage is realized;

C. in the drainage process, the controller calculates the single real-time drainage volume that this drainage is originated to reaching at present in real time, and when the single real-time drainage volume reached preset single drainage volume, the position of vertical briquetting was adjusted to the controller, makes vertical briquetting will put the introduction end extrusion of drainage tube to the state of blocking in the tub clearance, and this time drainage finishes this moment, realizes the ration drainage promptly.

4. An automatic fluid accumulation drainage device according to claim 1 or 2, wherein: in the negative pressure drainage mode, the controller carries out automatic control to the operating condition of drainage adjusting part based on real-time drainage speed, single real-time drainage volume and preset drainage parameter, and concrete regulation and control mode is:

A. according to the preset drainage starting time, the controller regulates and controls the working state of the driving motor, so that the fluid output and the fluid suction are alternately performed, and the fluid in the drainage tube continuously flows towards the drainage bag, namely, the timing drainage is realized;

B. in the drainage process, the controller adjusts the working state of the driving motor according to the real-time drainage speed, namely adjusts the running states of fluid output and fluid suction, and finally enables the real-time drainage speed to be approximately equal to the preset drainage speed, namely constant-speed drainage is realized; the operation states of the fluid output and the fluid suction comprise start-stop, duration and working frequency of the fluid output and the fluid suction;

C. in the drainage process, the controller calculates the single real-time drainage volume of the drainage from the beginning to the present time in real time, after the single real-time drainage volume reaches the preset single drainage volume, the controller enables the driving motor to reversely output until the longitudinal pressing block extrudes the leading-out end of the drainage tube to a blocking state and the two transverse pressing blocks reset to the initial position and then stop running, at the moment, the drainage is finished, and at the moment, the drainage tube is extruded by the longitudinal pressing block to keep a blocking state, so that quantitative drainage is realized.