Blockage detection device and method for nutrition pump and nutrition pump
阅读说明：本技术 一种营养泵的阻塞检测装置、检测方法及营养泵 (Blockage detection device and method for nutrition pump and nutrition pump ) 是由 黎志杰 马坤荣 龚伟 于 2020-06-03 设计创作，主要内容包括：本发明属于营养泵领域,公开了一种营养泵的阻塞检测装置、检测方法及营养泵,其装置包括：滑动件,滑动件可滑动地设置于营养泵的支架上,滑动件包括相对设置的第一端面和第二端面,第一端面用于与设置于支架上的泵管的进液区域抵接,第二端面用于与泵管的出液区域抵接；磁性件,磁性件设置于滑动件上；传感器,传感器设置于支架上,用于根据磁性件的磁感强度变化检测泵管的阻塞；当进液区域发生阻塞时,进液区域处的泵管截面变小,使滑动件带动磁性件朝向进液区域移动；当出液区域发生阻塞时,出液区域处的泵管截面变大,使滑动件带动磁性件朝向进液区域移动。本发明不仅可直接检测泵管是否发生阻塞,而且功耗更小,对使用环境要求较低。(The invention belongs to the field of nutrition pumps, and discloses a blockage detection device and a blockage detection method for a nutrition pump and the nutrition pump, wherein the device comprises: the sliding piece is arranged on the bracket of the nutrition pump in a sliding manner and comprises a first end face and a second end face which are oppositely arranged, the first end face is used for being abutted against a liquid inlet area of a pump pipe arranged on the bracket, and the second end face is used for being abutted against a liquid outlet area of the pump pipe; the magnetic part is arranged on the sliding part; the sensor is arranged on the bracket and used for detecting the blockage of the pump pipe according to the change of the magnetic induction intensity of the magnetic part; when the liquid inlet area is blocked, the section of the pump pipe at the liquid inlet area is reduced, so that the sliding part drives the magnetic part to move towards the liquid inlet area; when the liquid outlet area is blocked, the section of the pump pipe at the liquid outlet area is enlarged, so that the sliding part drives the magnetic part to move towards the liquid inlet area. The invention can directly detect whether the pump pipe is blocked or not, has lower power consumption and lower requirement on the use environment.)
1. An occlusion detection device for a nutritional pump, comprising:
the sliding piece is arranged on a support of the nutrition pump in a sliding mode and comprises a first end face and a second end face which are arranged oppositely, the first end face is used for being abutted to a liquid inlet area of a pump pipe arranged on the support, and the second end face is used for being abutted to a liquid outlet area of the pump pipe;
the magnetic piece is arranged on the sliding piece;
the sensor is arranged on the bracket and used for detecting the magnetic induction intensity when the position of the magnetic part changes and detecting the blockage of the pump pipe according to the magnetic induction intensity;
when the liquid inlet area is blocked, the section of a pump pipe at the liquid inlet area is reduced under the action of a conveying mechanism of the nutrition pump, so that the sliding piece drives the magnetic piece to move towards the liquid inlet area;
when the liquid outlet area is blocked, the section of the pump pipe at the liquid outlet area is enlarged under the action of the conveying mechanism, so that the sliding piece drives the magnetic piece to move towards the liquid inlet area.
2. The occlusion detection device of claim 1, wherein,
the sliding part comprises a first plate, a second plate and a column body, the first plate and the second plate are respectively arranged on two sides of the column body, one end, far away from the column body, of the first plate is abutted to a liquid inlet area of the pump pipe, and one end, far away from the column body, of the second plate is abutted to a liquid outlet area of the pump pipe;
the magnetic part is arranged in the column body.
3. The occlusion detection device of claim 2, wherein,
a first distance from the first end face to the center of the column is equal to a second distance from the second end face to the center of the column;
the sensor is located below the magnetic member.
4. The occlusion detection device of a nutrient pump according to any of claims 1-3,
the abutting pressure of the first end surface to the liquid inlet area of the pump pipe is the same as that of the second end surface to the liquid outlet area of the pump pipe.
5. A nutrition pump, characterized in that it comprises a frame, a pump tube, a delivery mechanism and a clogging detection means of the nutrition pump according to any of the preceding claims 1-4;
the pump pipe is arranged on the support and comprises a liquid inlet area, a conveying area and a liquid outlet area which are sequentially connected, and the liquid inlet area and the liquid outlet area are oppositely arranged;
the conveying mechanism is arranged on the support, the conveying area is sleeved on the conveying mechanism, and the conveying mechanism is used for conveying the nutrient solution in the solution inlet area to the solution outlet area from the conveying area;
the blockage detection device is arranged on the support and used for detecting the blockage of the pump pipe.
6. A nutrition pump as claimed in claim 5,
the conveying mechanism comprises a turntable and more than two rollers;
the rotary disc is rotatably arranged on the bracket;
the roller is rotatably arranged on the turntable and is abutted against the conveying area of the pump pipe;
when the turntable rotates, the roller is driven to move, and when the roller moves, the roller rotates in sequence to extrude the conveying area of the pump pipe, so that the nutrient solution in the pump pipe is pushed forwards.
7. A nutrition pump as claimed in claim 5,
further comprising:
the fixing frame is arranged on the support, one side of the fixing frame, which is close to the support, is provided with a plurality of clamping sleeves, and the pump pipe is fixed on the fixing frame through the clamping sleeves.
8. A nutrition pump as claimed in claim 7,
one side of the fixed frame, which is close to the bracket, is also provided with a sliding rail;
the sliding part is arranged in the sliding rail in a sliding mode.
9. A nutrition pump as claimed in claim 8,
further comprising:
the cover plate covers one side, far away from the fixed frame, of the sliding piece and is fixedly connected with the fixed frame.
10. A method for detecting a clogging detection device of a nutrient pump, characterized in that the clogging detection device of the nutrient pump is the clogging detection device of the nutrient pump according to any one of claims 1 to 4, wherein the method for detecting comprises:
in the initial state, the sensor detects the initial magnetic induction intensity of the magnetic piece;
when the nutrition pump operates, the sensor detects the magnetic induction intensity after the position of the magnetic part changes in real time;
and when the difference value between the magnetic induction intensity and the initial magnetic induction intensity is larger than a preset threshold value, detecting that the pump pipe is blocked.
Technical Field
The invention belongs to the technical field of nutrition pumps, and particularly relates to a blockage detection device and a blockage detection method for a nutrition pump and the nutrition pump.
Background
The enteral nutrition pump is a nutrition type infusion pump for nasal feeding, and can input water, nutrient solution and homemade meal milk with certain concentration through a nasal feeding tube. In the conveying process, the pump pipe is easy to be blocked due to the phenomena of bending and the like of the pump pipe and overlarge particles in the self-made rice milk.
At present, the drip chamber is generally used for judging whether the nutrition pump is in a normal working state or an abnormal working state or not, and then an alarm is given. Due to the fact that no liquid drips at the dropping funnel, for example, blockage occurs, a transmission system fails, no nutrient solution is contained in the feeding liquid bag, and the like, whether the pump pipe is blocked or not cannot be accurately judged through the method. Another way is to detect the pipeline of the pump tube by infrared photoelectric principle (using a photoelectric coupling tube), and when the expansion of the pipeline is detected, the pipeline of the pump tube is considered to be blocked. However, the photoelectric coupling tube has large power consumption, and no interference of dirt, water vapor and the like exists between the infrared transmitting end and the receiving end, so that the requirement on the use environment is high.
Disclosure of Invention
The invention aims to provide a blockage detection device and a blockage detection method of a nutrition pump and the nutrition pump, which can directly detect whether a pump pipe is blocked or not, and have lower power consumption and lower requirements on the use environment.
The technical scheme provided by the invention is as follows:
in one aspect, a blockage detection device for a nutrition pump is provided, comprising:
the sliding piece is arranged on a support of the nutrition pump in a sliding mode and comprises a first end face and a second end face which are arranged oppositely, the first end face is used for being abutted to a liquid inlet area of a pump pipe arranged on the support, and the second end face is used for being abutted to a liquid outlet area of the pump pipe;
the magnetic piece is arranged on the sliding piece;
the sensor is arranged on the bracket and used for detecting the magnetic induction intensity when the position of the magnetic part changes and detecting the blockage of the pump pipe according to the magnetic induction intensity;
when the liquid inlet area is blocked, the section of a pump pipe at the liquid inlet area is reduced under the action of a conveying mechanism of the nutrition pump, so that the sliding piece drives the magnetic piece to move towards the liquid inlet area;
when the liquid outlet area is blocked, the section of the pump pipe at the liquid outlet area is enlarged under the action of the conveying mechanism, so that the sliding piece drives the magnetic piece to move towards the liquid inlet area.
Further, the sliding part comprises a first plate, a second plate and a column body, the first plate and the second plate are respectively arranged on two sides of the column body, one end, far away from the column body, of the first plate is abutted to a liquid inlet area of the pump pipe, and one end, far away from the column body, of the second plate is abutted to a liquid outlet area of the pump pipe;
the magnetic part is arranged in the column body.
Further, a first distance from the first end surface to a center of the cylinder is equal to a second distance from the second end surface to the center of the cylinder;
the sensor is located below the magnetic member.
Further, the abutting pressure of the first end face to the liquid inlet area of the pump pipe is the same as the abutting pressure of the second end face to the liquid outlet area of the pump pipe.
In another aspect, a nutrition pump is provided, which comprises a bracket, a pump pipe, a conveying mechanism and any one of the blockage detection devices of the nutrition pump;
the pump pipe is arranged on the support and comprises a liquid inlet area, a conveying area and a liquid outlet area which are sequentially connected, and the liquid inlet area and the liquid outlet area are oppositely arranged;
the conveying mechanism is arranged on the support, the conveying area is sleeved on the conveying mechanism, and the conveying mechanism is used for conveying the nutrient solution in the solution inlet area to the solution outlet area from the conveying area;
the blockage detection device is arranged on the support and used for detecting the blockage of the pump pipe.
Further, the conveying mechanism comprises a turntable and more than two rollers;
the rotary disc is rotatably arranged on the bracket;
the roller is rotatably arranged on the turntable and is abutted against the conveying area of the pump pipe;
when the turntable rotates, the roller is driven to move, and when the roller moves, the roller rotates in sequence to extrude the conveying area of the pump pipe, so that the nutrient solution in the pump pipe is pushed forwards.
Further, still include:
the fixing frame is arranged on the support, one side of the fixing frame, which is close to the support, is provided with a plurality of clamping sleeves, and the pump pipe is fixed on the fixing frame through the clamping sleeves.
Furthermore, a slide rail is arranged on one side of the fixed frame close to the bracket;
the sliding part is arranged in the sliding rail in a sliding mode.
Further, still include:
the cover plate covers one side, far away from the fixed frame, of the sliding piece and is fixedly connected with the fixed frame.
In another aspect, a method for detecting an occlusion detection device of a nutrition pump is provided, including:
in the initial state, the sensor detects the initial magnetic induction intensity of the magnetic piece;
when the nutrition pump operates, the sensor detects the magnetic induction intensity after the position of the magnetic part changes in real time;
and when the difference value between the magnetic induction intensity and the initial magnetic induction intensity is larger than a preset threshold value, detecting that the pump pipe is blocked.
The blockage detection device and the blockage detection method for the nutrition pump and the nutrition pump provided by the invention can bring at least one of the following beneficial effects: according to the invention, the expansion and contraction relation between the liquid inlet area and the liquid outlet area is utilized to control the middle sliding part to move towards one direction, the magnetic part is arranged in the sliding part, and the magnetic part moves along with the sliding part, so that the magnetic induction intensity of the magnetic part detected by the sensor is changed, and whether the pump pipe is blocked or not is judged according to the change of the magnetic induction intensity of the magnetic part; the blockage detection device can directly detect whether the pump pipe is blocked or not, and is more beneficial to the troubleshooting work of operators when the nutrition pump is in a state; in addition, compared with an obstruction detection system formed by the existing photoelectric sensors, sensors such as a Hall sensor for detecting the magnetic induction intensity can enable the running power consumption of the nutrition pump to be smaller, and the nutrition pump can run more durably under the condition of emergency power supply; the detection of blockage cannot be influenced when dirt and water vapor exist between the magnetic part and the sensor, so that the reliability is better, the product cost and the processing requirement are lower, and the use cost can be reduced.
Drawings
The above features, technical features, advantages and implementations of an occlusion detection device and method for a nutritional pump will be further described in the following detailed description of preferred embodiments in a clearly understandable manner, with reference to the accompanying drawings.
FIG. 1 is a schematic structural diagram of an occlusion detection device of a nutrition pump, which is arranged on the nutrition pump;
FIG. 2 is a schematic view of the connection of the clogging detecting device of the nutrition pump with the pump tube and the roller according to the present invention;
FIG. 3 is a cross-sectional view of an occlusion detection device of a nutrition pump of the present invention when the pump tube is not occluded;
FIG. 4 is a cross-sectional view of an occlusion detection device of a nutrition pump of the present invention when a pump tube is occluded;
FIG. 5 is a schematic structural diagram of an obstruction detection device of a nutrition pump, a conveying mechanism, a pump tube and a fixing frame;
FIG. 6 is a schematic view of the clogging detecting device of the nutrition pump together with the rollers, the pump tube and the fixing frame;
FIG. 7 is a schematic view of a nutrition pump of the present invention;
FIG. 8 is a first schematic structural diagram of the conveying mechanism for conveying the nutrient solution in the pump pipe;
FIG. 9 is a second schematic structural diagram of the conveying mechanism conveying the nutrient solution in the pump pipe;
FIG. 10 is a third schematic structural diagram of the conveying mechanism for conveying the nutrient solution in the pump pipe;
FIG. 11 is a flow chart of the detection method of the clogging detection device for the nutrition pump according to the present invention.
Detailed Description
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following description will be made with reference to the accompanying drawings. It is obvious that the drawings in the following description are only some examples of the invention, and that for a person skilled in the art, other drawings and embodiments can be derived from them without inventive effort.
For the sake of simplicity, the drawings only schematically show the parts relevant to the present invention, and they do not represent the actual structure as a product. In addition, in order to make the drawings concise and understandable, components having the same structure or function in some of the drawings are only schematically illustrated or only labeled. In this document, "one" means not only "only one" but also a case of "more than one".
The invention provides an embodiment of a blockage detection device of a nutrition pump, as shown in fig. 1 to 7, the blockage detection device of the nutrition pump comprises a sliding part 1, a
when the liquid inlet area 51 is blocked, the section of the
when the
As shown in fig. 3, when the
As shown in fig. 4, when the liquid inlet region 51 of the
As shown in fig. 4, when the
The blockage detection device can also be provided with an alarm, and when the blockage of the
In the embodiment, the expansion and contraction relationship between the liquid inlet area 51 and the
In one embodiment, as shown in fig. 2, the sliding member 1 includes a first plate 13, a second plate 14 and a column 15, the first plate 13 and the second plate 14 are respectively disposed on two sides of the column 15, an end of the first plate 13 away from the column 15 is a first end surface 11, the first end surface 11 abuts against an inlet area 51 of the
The first plate 13, the second plate 14 and the column 15 may be integrally formed. An accommodating cavity for accommodating the
Preferably, as shown in fig. 3 and 4, a first distance from the first end face 11 to the center of the cylindrical body 15 is equal to a second distance from the second end face 12 to the center of the cylindrical body 15; the
The
Preferably, the abutting pressure of the first end face 11 to the liquid inlet area 51 of the
The abutting pressure of the first plate 13 to the liquid inlet area 51 of the
The present invention also provides an embodiment of a nutrition pump, as shown in fig. 1 to 7, which includes a
The blockage detection device of the nutrition pump comprises a sliding part 1, a
when the liquid inlet area 51 is blocked, the section of the
when the
As shown in fig. 3, when the
As shown in fig. 4, when the liquid inlet region 51 of the
As shown in fig. 4, when the
The blockage detection device can also be provided with an alarm, and when the blockage of the
In the embodiment, the expansion and contraction relationship between the liquid inlet area 51 and the
In one embodiment, as shown in fig. 2, the sliding member 1 includes a first plate 13, a second plate 14 and a column 15, the first plate 13 and the second plate 14 are respectively disposed on two sides of the column 15, an end of the first plate 13 away from the column 15 is a first end surface 11, the first end surface 11 abuts against an inlet area 51 of the
The first plate 13, the second plate 14 and the column 15 may be integrally formed. The cylinder 15 is hollow to form an accommodating cavity, the
Preferably, a first distance from the first end face 11 to the center of the column 15 is equal to a second distance from the second end face 12 to the center of the column 15; the
The
Preferably, the abutting pressure of the first end face 11 to the liquid inlet area 51 of the
The abutting pressure of the first plate 13 to the liquid inlet area 51 of the
In one embodiment, as shown in fig. 5 and 6, the
As shown in fig. 8 to 10, the rollers 62 are rotatably disposed on the
In the conveying process, the negative pressure of the nutrient pump and the nutrient solution suction are generated by the elasticity of the
The operation of the nutrition pump is as if a fluid filled hose is squeezed with a finger, as the finger slides forward, the fluid in the
In the embodiment, the fluid of the nutrition pump only contacts the
In one embodiment, as shown in fig. 5 to 7, the pump tube fixing device further includes a fixing
The fixing
Preferably, as shown in fig. 5 and 6, a
Preferably, as shown in fig. 3 and 4, the sliding device further comprises a
The present invention also provides an embodiment of a method for detecting an obstruction detection device of a nutrition pump, as shown in fig. 11, where the obstruction detection device of the nutrition pump is the obstruction detection device of the nutrition pump in the above embodiment, where the method includes:
s100, in an initial state, detecting the initial magnetic induction intensity of the magnetic piece by using a sensor;
s200, when the nutrition pump runs, the sensor detects the magnetic induction intensity after the position of the magnetic part changes in real time;
s300, when the difference value between the magnetic induction intensity and the initial magnetic induction intensity is larger than a preset threshold value, the pump pipe is detected to be blocked.
Specifically, in an initial state that the nutrition pump is not operated, the sensor detects the initial magnetic induction intensity of the magnetic member, and the initial magnetic induction intensity refers to the magnetic induction intensity detected by the sensor when the magnetic member is at the initial position.
In the operation process of the nutrition pump, the sensor detects the magnetic induction intensity of the magnetic part in real time, and when the position of the magnetic part changes, the magnetic induction intensity of the magnetic part detected by the sensor also changes.
In the running process of the nutrition pump, when the difference value between the magnetic induction intensity detected by the sensor and the initial magnetic induction intensity detected in the initial state is greater than a preset threshold value, the blockage of the pump pipe is judged. The preset threshold value can be set according to actual working requirements, if early warning is needed when the pump pipe is slightly blocked, the preset threshold value can be set to be smaller, and if early warning is needed when the pump pipe is seriously blocked, the preset threshold value can be set to be larger. Similarly, the blocking degree of the pump pipe can be judged according to the magnetic induction intensity detected in the operation process of the nutrition pump and the initial magnetic induction intensity.
It should be noted that the above embodiments can be freely combined as necessary. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
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