CN213387904U - Frequency conversion constant-pressure device of pretreatment system of water production equipment for hemodialysis - Google Patents
Frequency conversion constant-pressure device of pretreatment system of water production equipment for hemodialysis Download PDFInfo
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- CN213387904U CN213387904U CN202021261240.4U CN202021261240U CN213387904U CN 213387904 U CN213387904 U CN 213387904U CN 202021261240 U CN202021261240 U CN 202021261240U CN 213387904 U CN213387904 U CN 213387904U
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Abstract
The utility model discloses a hemodialysis is with system water equipment pretreatment systems frequency conversion constant voltage equipment. The device includes: the centrifugal pump, inverter motor, the manometer, the converter support, the converter, the five-way valve, pressure transmitter and pressure package, pressure transmitter detects the pressure of intaking in the five-way valve, convert the pressure of intaking into electric current or voltage signal and send into the converter, the converter compares electric current or voltage signal and default through the comparator, under the condition that electric current or voltage signal are greater than the default, reduce the frequency of converter output, reduce inverter motor's rotational speed, reduce the pressure of intaking, under the condition that electric current or voltage signal are less than the default, increase the frequency of converter output, promote inverter motor's rotational speed, increase the pressure of intaking, finally reach a balance point, stabilize pressure at a value, provide invariable pressure for water preparation equipment pretreatment systems for hemodialysis, compact structure, area is little, job stabilization.
Description
Technical Field
The utility model relates to a healthy equipment technical field, concretely relates to hemodialysis is with system water equipment pretreatment systems frequency conversion constant voltage equipment.
Background
The pretreatment system of the water production equipment for hemodialysis is used for primarily filtering raw water to obtain soft protective water meeting the water inlet requirement of a reverse osmosis membrane. The pretreatment system mainly comprises a filter tank, filter materials, a control valve, a pipeline and the like. The existing water preparation equipment pretreatment system for hemodialysis has the problem of unstable raw water pressure, and if the raw water pressure is unstable, the following hazards are caused: the service life of the filter tank is influenced, and the risk of tank body breakage exists; the service life of the control head is influenced, and the valve body, the valve core and the sealing ring of the control head are damaged; the quality of the pretreated softened water is influenced, and the service life of a reverse osmosis membrane of the main machine is reduced: the water supply pressure is high, the flow rate is high, the contact time with the filter material is shortened, the chloride ions and the iron ions in the softened water exceed the standard, the reverse osmosis membrane is poisoned, and the water quality is reduced; the water supply pressure is low, and raw water cannot smoothly pass through each filter tank, so that the water yield of the reverse osmosis main machine is influenced. Therefore, there is a need to provide a variable frequency constant pressure device of a pretreatment system of a water production device for hemodialysis to solve the above problems.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a hemodialysis is with system water equipment pretreatment systems frequency conversion constant voltage equipment to solve current hemodialysis and exist the unstable problem of raw water pressure with system water equipment pretreatment systems.
The utility model provides a hemodialysis is with system water preparation equipment pretreatment systems frequency conversion constant voltage equipment, include: the device comprises a centrifugal pump, a variable frequency motor, a pressure gauge, a frequency converter bracket, a frequency converter, a five-way valve, a pressure transmitter and a pressure bag;
the centrifugal pump is provided with a pump shaft, the variable frequency motor is provided with a motor shaft, the variable frequency motor is arranged on one side of the centrifugal pump, the pump shaft of the centrifugal pump is in transmission connection with the motor shaft of the variable frequency motor, the frequency converter support is arranged above the variable frequency motor, and the frequency converter is arranged on the frequency converter support;
one end of the centrifugal pump is provided with a water inlet, the top of the centrifugal pump is provided with a five-way valve, one connector of the five-way valve is provided with a water outlet, and the other four connectors of the five-way valve are respectively connected with the centrifugal pump, a pressure gauge, a pressure transmitter and a pressure bag;
the pressure transmitter is electrically connected with the frequency converter and is used for detecting the water inlet pressure in the five-way valve, converting the water inlet pressure into a current or voltage signal and sending the current or voltage signal to the frequency converter;
the frequency converter is electrically connected with the variable frequency motor, a comparator is arranged in the frequency converter, the frequency converter is used for comparing the current or voltage signal with a preset value through the comparator, the frequency output by the frequency converter is reduced under the condition that the current or voltage signal is greater than the preset value, and the frequency output by the frequency converter is increased under the condition that the current or voltage signal is less than the preset value.
Optionally, the water outlet is arranged above the water inlet in parallel.
Optionally, the pressure bag is located at the top of the five-way valve, and the pressure gauge and the pressure transmitter are located on two sides of the water outlet.
Optionally, the variable frequency motor is connected with a 220V power supply.
Optionally, the device further comprises a water outlet guide device, wherein the water outlet guide device comprises a bottom support table, a stand column, an annular guide channel, support legs, universal wheels, a water inlet channel of the water outlet guide device, a first water outlet channel of the water outlet guide device and a plurality of second water outlet channels of the water outlet guide device;
four the supporting legs is vertical connect in the bottom sprag platform bottom surface, the supporting legs bottom is provided with the universal wheel, the stand set up perpendicularly in bottom sprag platform upper surface central point puts, annular direction passageway pass through the connecting plate rotate connect in the top of stand, go out water guider inlet channel with annular direction passageway's the outside connect and with annular direction passageway is tangent, go out the first outlet channel of water guider with annular direction passageway's the outside connect and with annular direction passageway is tangent, go out water guider inlet channel with the axis collineation and the extending direction of the first outlet channel of water guider are opposite, several play water guider second outlet channel set gradually in go out one side of the first outlet channel of water guider, several play water guider second outlet channel in proper order with annular direction passageway's the outside connect and with the tangent one side of annular direction passageway The water outlet guide device comprises a water inlet channel, a water outlet guide device first water outlet channel and a plurality of water outlet guide device second water outlet channels, wherein the end parts of the water inlet channel of the water outlet guide device, the first water outlet channel of the water outlet guide device and the second water outlet channels of the plurality of water outlet guide devices are respectively provided with a water pipe connector, the water pipe connector on the water inlet channel of the water outlet guide device is connected with the water outlet, and the water pipe connectors at the water inlet channel of the water outlet guide device, the first water outlet channel of the water outlet guide device and the second water outlet channels.
The utility model discloses following beneficial effect has: the utility model provides a frequency-conversion constant-pressure device of a pretreatment system of water production equipment for hemodialysis, the pressure transmitter can be used for detecting the water inlet pressure in the five-way valve, converting the water inlet pressure into a current or voltage signal and sending the current or voltage signal to the frequency converter, the frequency converter compares the current or voltage signal with a preset value through the comparator, when the current or voltage signal is larger than the preset value, the frequency output by the frequency converter is reduced, so that the rotating speed of the variable frequency motor is reduced, the water inlet pressure is further reduced, under the condition that the current or voltage signal is less than the preset value, the frequency output by the frequency converter is increased, so that the rotating speed of the variable frequency motor is increased, and then increase the pressure of intaking, finally reach a balance point, stabilize pressure at a value, for the system pretreatment system of water preparation equipment for hemodialysis provides invariable pressure, the device compact structure, area is little, job stabilization.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is the utility model provides a hemodialysis is with system water preparation equipment pretreatment systems frequency conversion constant voltage equipment's schematic structure.
Figure 2 is the utility model provides a hemodialysis is with system water preparation equipment pretreatment systems frequency conversion constant voltage equipment's electricity connection framework.
Fig. 3 is the utility model provides a hemodialysis is with system water preparation equipment pretreatment systems frequency conversion constant voltage equipment's play water guider structure chart.
Fig. 4 is the utility model provides a hemodialysis is with system water preparation equipment pretreatment systems frequency conversion constant voltage equipment's play water guider bottom structure chart.
Fig. 5 is the utility model provides a hemodialysis is with system water preparation equipment pretreatment systems frequency conversion constant voltage equipment's play water guider top view.
Illustration of the drawings: 1-a centrifugal pump; 2-a variable frequency motor; 3-a pressure gauge; 4-a frequency converter support; 5-a frequency converter; 6-five-way valve; 7-a pressure transmitter; 8-pressure pack; 9-water outlet; 10-a water inlet; 51-a comparator; 11-a bottom support table; 12-a column; 13-an annular guide channel; 14-supporting feet; 15-universal wheels; 16-a water inlet channel of the water outlet guide device; 17-a first water outlet channel of the water outlet guide device; 18-a second water outlet channel of the water outlet guide device; 19-water pipe connection; 131-connecting plate.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments. It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
Exemplary embodiments according to the present application will now be described in more detail with reference to the accompanying drawings. These exemplary embodiments may, however, be embodied in many different forms and should not be construed as limited to only the embodiments set forth herein. It is to be understood that these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the concept of the exemplary embodiments to those skilled in the art, in the drawings, the thicknesses of layers and regions are exaggerated for clarity, and the same devices are denoted by the same reference numerals, and thus the description thereof will be omitted.
Referring to fig. 1 to 5, an embodiment of the present invention provides a frequency-conversion constant-pressure device of a water preparation device pretreatment system for hemodialysis, including: centrifugal pump 1, variable frequency motor 2, manometer 3, converter support 4, converter 5, five-way valve 6, pressure transmitter 7 and pressure package 8.
Wherein, centrifugal pump 1 has the pump shaft, and inverter motor 2 has the motor shaft, and inverter motor 2 sets up in one side of centrifugal pump 1, and the pump shaft of centrifugal pump 1 is connected with inverter motor 2's motor shaft transmission to drive centrifugal pump 1 through inverter motor 2 and move. The frequency converter support 4 is arranged above the variable frequency motor 2, and the frequency converter 5 is arranged on the frequency converter support 4.
One end of the centrifugal pump 1 is provided with a water inlet 10, the top of the centrifugal pump 1 is provided with a five-way valve 6, one connector of the five-way valve 6 is provided with a water outlet 9, and the other four connectors of the five-way valve 6 are respectively connected with the centrifugal pump 1, a pressure gauge 3, a pressure transmitter 7 and a pressure bag 8.
The pressure transmitter 7 is electrically connected with the frequency converter 5, and the pressure transmitter 7 is used for detecting the water inlet pressure in the five-way valve 6, converting the water inlet pressure into a current or voltage signal and sending the current or voltage signal to the frequency converter 5. The frequency converter 5 is electrically connected with the variable frequency motor 2, a comparator 51 is arranged in the frequency converter 5, the frequency converter 5 is used for comparing a current or voltage signal with a preset value through the comparator 51, the frequency output by the frequency converter 5 is reduced under the condition that the current or voltage signal is greater than the preset value, and the frequency output by the frequency converter 5 is increased under the condition that the current or voltage signal is less than the preset value. The comparator 51 is a well-established technology, and can be implemented by an existing circuit structure.
The delivery port 9 parallel arrangement is in water inlet 10 top, and pressure package 8 is located the top of five-way valve 6, and manometer 3 and pressure transmitter 7 are located delivery port 9 both sides, and the effect of pressure package 8 is that the buffering water pump opens and stops the water hammer impact that produces, and the pressure fluctuation in the gentle water system reduces the start-stop frequency of water pump, stable system's pressure. The pressure gauge 3 can visually display the pressure of the water. The frequency conversion motor 2 is connected with a 220V power supply, 2 power plugs and the frequency conversion constant-pressure water supply device automatically works without the need of personnel on duty. The device has compact structure, small occupied area and stable work.
Furthermore, the device also comprises a water outlet guide device, wherein the water outlet guide device comprises a bottom support platform 11, a stand column 12, an annular guide channel 13, support legs 14, universal wheels 15, a water inlet channel 16 of the water outlet guide device, a first water outlet channel 17 of the water outlet guide device and a plurality of second water outlet channels 18 of the water outlet guide device.
Specifically, four supporting feet 14 are vertically connected to the bottom surface of a bottom supporting platform 11, universal wheels 15 are arranged at the bottoms of the supporting feet 14, an upright post 12 is vertically arranged at the center position of the upper surface of the bottom supporting platform 11, an annular guide channel 13 is rotatably connected to the top end of the upright post 12 through a connecting plate 131, a water outlet guide device water inlet channel 16 is connected with the outer side of the annular guide channel 13 and is tangent to the annular guide channel 13, a water outlet guide device first water outlet channel 17 is connected with the outer side of the annular guide channel 13 and is tangent to the annular guide channel 13, the axes of the water outlet guide device water inlet channel 16 and the water outlet guide device first water outlet channel 17 are collinear and extend in opposite directions, a plurality of water outlet guide device second water outlet channels 18 are sequentially arranged at one side of the water outlet guide device first water outlet channel 17, the plurality of water outlet guide device second water outlet channels 18 are sequentially connected with the outer side, the end parts of the water inlet channel 16 of the water outlet guiding device, the first water outlet channel 17 of the water outlet guiding device and the second water outlet channels 18 of the plurality of water outlet guiding devices are respectively provided with a water pipe joint 19, the water pipe joint 19 on the water inlet channel 16 of the water outlet guiding device is connected with the water outlet 9, and the water pipe joints 19 at the ends of the water inlet channel 16 of the water outlet guiding device, the first water outlet channel 17 of the water outlet guiding device and the second water outlet channels 18 of the plurality of water outlet guiding devices are respectively provided with a valve.
The utility model discloses a hemodialysis is with system water equipment pretreatment systems frequency conversion constant voltage equipment's theory of operation as follows: detect the pressure of intaking in the five-way valve 6 through pressure transmitter 7, convert the pressure of intaking into electric current or voltage signal and send into converter 5, converter 5 compares electric current or voltage signal with the default through comparator 51, under the condition that electric current or voltage signal are greater than the default, reduce the frequency of converter 5 output, thereby reduce inverter motor 2's rotational speed, and then reduce the pressure of intaking, under the condition that electric current or voltage signal are less than the default, increase the frequency of converter 5 output, thereby promote inverter motor 2's rotational speed, and then increase the pressure of intaking, finally reach a balance point, stabilize pressure at a value, provide invariable pressure for water preparation equipment pretreatment systems for hemodialysis, the device compact structure, area is little, job stabilization.
The utility model discloses a hemodialysis is with system water equipment pretreatment systems frequency conversion constant voltage equipment can be according to the change of terminal water consumption point water consumption and water consumption round clock, and automated inspection adjusts the frequency of converter 5, changes centrifugal pump 1's rotational speed, keeps the constant voltage water supply, economizes on electricity, water conservation. The device also has a water-free protection function, a detection device is arranged to detect the current/pressure of the operation of the centrifugal pump 1 and transmit the current/pressure to the frequency converter 5, the current/pressure is compared with a corresponding preset target value through the comparator 51, and if the current/pressure is smaller than the preset target value of the frequency converter 5, the centrifugal pump 1 is controlled to stop and an alarm of low water inlet pressure is sent out.
In order to ensure the working stability of the device, the position of the centrifugal pump 1 is usually not easy to change after being fixed, and under the practical application environment, the position of the terminal water consumption point is different, so that the water discharged from the water outlet 9 can be bent when being connected to the terminal water consumption point through a pipeline, which can greatly affect the water pressure in the pipeline, the utility model discloses a water outlet guide device is arranged, the water outlet 9 can be connected with the water pipe joint 19 on the water inlet channel 16 of the water outlet guide device in practical use, and according to the difference of the position of the terminal water consumption point, the first water outlet channel 17 or the second water outlet channel 18 of the water outlet guide device in the corresponding position is opened, so that the water discharged from the water outlet 9 enters the annular guide channel 13 from the water inlet channel 16 of the water outlet guide device and is then discharged from the corresponding water outlet channel, and the water flows smoothly along the annular guide channel 13, and realize the steady direction to the play water through annular guide channel 13 to the terminal water consumption point of adaptation different position avoids the water that delivery port 9 discharged to be connected to the terminal water consumption point through the pipeline and can produce the bending of pipeline, leads to the problem that influences the water pressure in the pipeline.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
It should be noted that the terms "first," "second," and the like in the description and claims of this application and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the application described herein are, for example, capable of operation in sequences other than those illustrated or otherwise described herein.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. The utility model provides a hemodialysis is with system frequency conversion constant voltage equipment of system of making water equipment pretreatment, its characterized in that includes: the device comprises a centrifugal pump (1), a variable frequency motor (2), a pressure gauge (3), a frequency converter bracket (4), a frequency converter (5), a five-way valve (6), a pressure transmitter (7) and a pressure bag (8);
the centrifugal pump (1) is provided with a pump shaft, the variable frequency motor (2) is provided with a motor shaft, the variable frequency motor (2) is arranged on one side of the centrifugal pump (1), the pump shaft of the centrifugal pump (1) is in transmission connection with the motor shaft of the variable frequency motor (2), the frequency converter support (4) is arranged above the variable frequency motor (2), and the frequency converter (5) is arranged on the frequency converter support (4);
a water inlet (10) is formed in one end of the centrifugal pump (1), a five-way valve (6) is arranged at the top of the centrifugal pump (1), a water outlet (9) is formed in one connecting port of the five-way valve (6), and the other four connecting ports of the five-way valve (6) are respectively connected with the centrifugal pump (1), a pressure gauge (3), a pressure transmitter (7) and a pressure bag (8);
the pressure transmitter (7) is electrically connected with the frequency converter (5), and the pressure transmitter (7) is used for detecting the water inlet pressure in the five-way valve (6), converting the water inlet pressure into a current or voltage signal and sending the current or voltage signal to the frequency converter (5);
the frequency converter (5) is electrically connected with the variable frequency motor (2), a comparator (51) is arranged in the frequency converter (5), the frequency converter (5) is used for comparing the current or voltage signal with a preset value through the comparator (51), the frequency output by the frequency converter (5) is reduced under the condition that the current or voltage signal is greater than the preset value, and the frequency output by the frequency converter (5) is increased under the condition that the current or voltage signal is less than the preset value.
2. The variable-frequency constant-pressure device of the pretreatment system of a water production device for hemodialysis according to claim 1, wherein the water outlet (9) is arranged in parallel above the water inlet (10).
3. The variable-frequency constant-pressure device of the pretreatment system of a water production device for hemodialysis as set forth in claim 2, wherein the pressure bag (8) is located at the top of the five-way valve (6), and the pressure gauge (3) and the pressure transmitter (7) are located at both sides of the water outlet (9).
4. The variable-frequency constant-voltage device of the pretreatment system of a water production device for hemodialysis as set forth in claim 3, wherein the variable-frequency motor (2) is connected to a 220V power supply.
5. The variable-frequency constant-pressure device of the pretreatment system of a water production device for hemodialysis according to claim 4, further comprising a water outlet guide device, wherein the water outlet guide device comprises a bottom support platform (11), a column (12), an annular guide channel (13), support legs (14), universal wheels (15), a water inlet channel (16) of the water outlet guide device, a first water outlet channel (17) of the water outlet guide device, and a plurality of second water outlet channels (18) of the water outlet guide device;
the four supporting legs (14) are vertically connected to the bottom surface of the bottom supporting table (11), universal wheels (15) are arranged at the bottom of the supporting legs (14), the stand column (12) is vertically arranged at the center of the upper surface of the bottom supporting table (11), the annular guide channel (13) is rotatably connected to the top end of the stand column (12) through a connecting plate (131), the water inlet channel (16) of the water outlet guide device is connected with the outer side of the annular guide channel (13) and tangent to the annular guide channel (13), the first water outlet channel (17) of the water outlet guide device is connected with the outer side of the annular guide channel (13) and tangent to the annular guide channel (13), the water inlet channel (16) of the water outlet guide device and the first water outlet channel (17) of the water outlet guide device are collinear in axis and opposite in extension direction, the plurality of second water outlet channels (18) of the water outlet guide devices are sequentially arranged at one side of the first water outlet channel (17) of the water outlet guide device, the second water outlet channels (18) of the plurality of water outlet guide devices are sequentially connected with the outer side of the annular guide channel (13) and are tangent to the annular guide channel (13), the ends of the water inlet channel (16) of the water outlet guide device, the first water outlet channel (17) of the water outlet guide device and the second water outlet channels (18) of the plurality of water outlet guide devices are respectively provided with a water pipe joint (19), a water pipe joint (19) on the water inlet channel (16) of the water outlet guide device is connected with the water outlet (9), and valves are respectively arranged on water pipe joints (19) at the water inlet channel (16) of the water outlet guide device, the first water outlet channel (17) of the water outlet guide device and the second water outlet channels (18) of the plurality of water outlet guide devices.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021261240.4U CN213387904U (en) | 2020-07-01 | 2020-07-01 | Frequency conversion constant-pressure device of pretreatment system of water production equipment for hemodialysis |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021261240.4U CN213387904U (en) | 2020-07-01 | 2020-07-01 | Frequency conversion constant-pressure device of pretreatment system of water production equipment for hemodialysis |
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| CN213387904U true CN213387904U (en) | 2021-06-08 |
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| CN202021261240.4U Active CN213387904U (en) | 2020-07-01 | 2020-07-01 | Frequency conversion constant-pressure device of pretreatment system of water production equipment for hemodialysis |
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