CN118148892A - Reverse flow damping vibration isolation diaphragm pump - Google Patents
Reverse flow damping vibration isolation diaphragm pump Download PDFInfo
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- CN118148892A CN118148892A CN202410583866.3A CN202410583866A CN118148892A CN 118148892 A CN118148892 A CN 118148892A CN 202410583866 A CN202410583866 A CN 202410583866A CN 118148892 A CN118148892 A CN 118148892A
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- 238000013016 damping Methods 0.000 title claims abstract description 49
- 238000002955 isolation Methods 0.000 title claims abstract description 22
- 239000007788 liquid Substances 0.000 claims abstract description 362
- 238000005192 partition Methods 0.000 claims description 48
- 230000009466 transformation Effects 0.000 claims description 23
- 230000002093 peripheral effect Effects 0.000 claims description 7
- 230000007423 decrease Effects 0.000 claims description 3
- 239000012528 membrane Substances 0.000 description 21
- 238000000034 method Methods 0.000 description 8
- 230000008569 process Effects 0.000 description 8
- 238000005086 pumping Methods 0.000 description 6
- 238000010586 diagram Methods 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- 239000000463 material Substances 0.000 description 4
- 230000007246 mechanism Effects 0.000 description 4
- 230000035939 shock Effects 0.000 description 4
- 230000003139 buffering effect Effects 0.000 description 3
- 239000002861 polymer material Substances 0.000 description 3
- 238000007789 sealing Methods 0.000 description 3
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 2
- 230000010349 pulsation Effects 0.000 description 2
- 230000001105 regulatory effect Effects 0.000 description 2
- 239000000741 silica gel Substances 0.000 description 2
- 229910002027 silica gel Inorganic materials 0.000 description 2
- 125000006850 spacer group Chemical group 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 238000010521 absorption reaction Methods 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002355 dual-layer Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 239000010410 layer Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035485 pulse pressure Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
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Abstract
The invention belongs to the field of diaphragm pumps, and discloses a reverse flow damping vibration isolation diaphragm pump, which comprises: the low-pressure liquid inlet cavity is arranged at the center of the pump body, and the high-pressure liquid outlet cavity is arranged at the periphery of the pump body; a one-way valve assembly; the diaphragms, the multiple pressure-changing cavities pump the liquid in the low-pressure liquid inlet cavity into the high-pressure liquid outlet cavity alternately through the movement of the diaphragms. According to the invention, the low-pressure liquid inlet cavity is arranged at the center part of the pump body, the high-pressure liquid outlet cavity is arranged at the periphery side of the pump body, the distance difference between each liquid inlet interface and each liquid inlet is smaller, when the liquid inlet flow is smaller or the liquid inlet flow is unstable, the liquid inlet quantity of each liquid inlet interface is relatively uniform, so that the liquid quantity pumped by a plurality of pressure-changing cavities is relatively uniform, the air pumped into the pressure-changing cavities is avoided, the fluctuation of the liquid inlet pressure can be balanced, and the flow of the pressure-changing cavities, the high-pressure liquid outlet cavity and the liquid outlet are uniform and the pressure is stable.
Description
Technical Field
The invention relates to the field of diaphragm pumps, in particular to a reverse flow damping vibration isolation diaphragm pump.
Background
Diaphragm pumps, which are commonly used for water heater pressurization, high-rise pipeline pressurization, water purifier pressurization and the like, are a common booster pump.
The diaphragm pump generally utilizes the driving mechanism to drive the flexible diaphragm to move repeatedly, so that the size of the pressure changing cavity is changed repeatedly, and the pressurization of the conveyed liquid is realized. In the working process, the flexible diaphragm moves along the direction of the driving mechanism intermittently towards the increasing pressure changing cavity, or the flexible diaphragm moves along the direction of the driving mechanism intermittently towards the reducing pressure changing cavity, and intermittent pressure increasing is realized in the repeated intermittent movement process, so that pulse pressure increasing liquid is obtained at the liquid outlet position of the diaphragm pump.
The traditional diaphragm pump comprises a low-pressure liquid inlet cavity, a pressure-variable cavity and a high-pressure liquid outlet cavity, wherein the low-pressure liquid inlet cavity, the pressure-variable cavity and the high-pressure liquid outlet cavity are sequentially communicated, the low-pressure liquid inlet cavity is provided with a liquid inlet, the high-pressure liquid outlet cavity is provided with a liquid outlet, pumping of liquid is realized by adopting the mode of the single pressure-variable cavity, and the pulse period is long.
In order to solve the technical problem that the single variable pressure cavity pumping mode has a long pulse period, the conventional diaphragm pump adopts the technical scheme that a plurality of variable pressure cavities are alternately arranged for supplying liquid to a high-pressure outlet cavity, and the technical scheme is as follows: the center of the diaphragm pump is provided with a high-pressure liquid outlet cavity, the periphery side of the diaphragm pump is provided with one or more low-pressure liquid inlet cavities in a circumferential direction, the low-pressure liquid inlet cavities and the high-pressure liquid outlet cavities are communicated with each other through a plurality of pressure transformation cavities, the pressure transformation cavities are isolated from each other, the low-pressure liquid inlet cavity is provided with a liquid inlet, and the high-pressure liquid outlet cavity is provided with a liquid outlet; the technical scheme comprises a swinging frame, wherein a driving mechanism drives the swinging frame to move up and down so that a plurality of pressure changing cavities supply liquid for a high-pressure liquid outlet cavity alternately, and pumped liquid is sequentially fed into the high-pressure liquid outlet cavity. However, the following problems exist in the technical scheme: 1. because the high-pressure liquid outlet cavity is arranged at the center of the diaphragm pump, the low-pressure liquid inlet cavity is annularly arranged at the outer peripheral side of the high-pressure liquid outlet cavity, the plurality of liquid inlet ports are annularly arranged at the outer peripheral side of the high-pressure liquid outlet cavity along the outline of the low-pressure liquid inlet cavity, the plurality of liquid inlet ports are correspondingly arranged with the pressure changing cavity, the inner diameter of the low-pressure liquid inlet cavity is larger than the outer diameter of the high-pressure liquid outlet cavity, the radial span of the low-pressure liquid inlet cavity is large, the diaphragm pump is generally provided with only one liquid inlet port at the outer peripheral side, the distance between each liquid inlet port and each liquid inlet port is larger, so that when the liquid inlet flow is smaller or the liquid inlet flow is unstable, the liquid inlet ports far away from the liquid inlet ports are difficult to ensure liquid inlet quantity, thereby leading to unstable flow of the pressure changing cavity far away from the liquid inlet ports, different liquid quantities pumped into the pressure changing cavities, even pumping air in the pressure changing cavity, noise is generated, and the phenomena of uneven liquid outlet flow and unstable pressure are easily caused; 2. the high-pressure liquid outlet cavity is arranged in the center, liquid is pumped into the center from the periphery, the high-pressure liquid outlet cavity is easy to have the condition of overhigh liquid pressure, and the liquid storage capacity of the high-pressure liquid outlet cavity is poor; 3. the low-pressure liquid inlet cavity is not provided with damping fins and does not have the capabilities of adjusting, isolating vibration and absorbing shock.
Disclosure of Invention
In order to overcome at least one defect of the prior art, the invention provides a reverse flow damping vibration isolation diaphragm pump, which is characterized in that a low-pressure liquid inlet cavity is arranged at the center part of a pump body, and a high-pressure liquid outlet cavity is arranged at the periphery side of the pump body, so that all liquid inlet interfaces are intensively arranged at the center part of the pump body and can be arranged close to the center shaft of the pump body, the distance between each liquid inlet interface and each liquid inlet is smaller, when the liquid inlet flow is smaller or the liquid inlet flow is unstable, the liquid inlet quantity of each liquid inlet interface is more uniform, the liquid quantity pumped by a plurality of pressure transformation cavities is more uniform, the air pumping in the pressure transformation cavities is avoided, the fluctuation of the liquid inlet pressure can be balanced, and the flow of the pressure transformation cavities, the high-pressure liquid outlet cavities and the liquid outlet are uniform and the pressure is stable.
The invention adopts the technical proposal for solving the problems that:
A reverse flow damping, shock-isolating diaphragm pump comprising:
the pump body is provided with a liquid inlet, a low-pressure liquid inlet cavity, a pressure-variable cavity, a high-pressure liquid outlet cavity and a liquid outlet, the low-pressure liquid inlet cavity is arranged at the center part of the pump body, the high-pressure liquid outlet cavity is arranged at the periphery side of the pump body, a plurality of pressure-variable cavities are arranged between the low-pressure liquid inlet cavity and the high-pressure liquid outlet cavity, the liquid inlet and the low-pressure liquid inlet cavity are communicated with each other, the high-pressure liquid outlet cavity is communicated with the liquid outlet, the low-pressure liquid inlet cavity and the high-pressure liquid outlet cavity are separated from each other, and a plurality of pressure-variable cavities are separated from each other;
The one-way valve assembly comprises a first one-way valve and a second one-way valve, a plurality of liquid inlet ports are arranged between the low-pressure liquid inlet cavity and the pressure changing cavity, at least one liquid inlet port is correspondingly arranged in each pressure changing cavity, the first one-way valve is arranged at the position of each liquid inlet port, a plurality of liquid outlet ports are arranged between the high-pressure liquid outlet cavity and the pressure changing cavity, at least one liquid outlet port is correspondingly arranged in each pressure changing cavity, and the second one-way valve is arranged at the position of each liquid outlet port;
the diaphragm is arranged in the pressure changing cavity, the diaphragm increases or reduces the pressure changing cavity through movement, and the plurality of pressure changing cavities alternately pump liquid in the low-pressure liquid inlet cavity into the high-pressure liquid outlet cavity through movement of the diaphragm.
In a preferred embodiment, the high-pressure liquid outlet cavity comprises a first high-pressure liquid outlet cavity and a second high-pressure liquid outlet cavity, the first high-pressure liquid outlet cavity and the second high-pressure liquid outlet cavity are arranged up and down along the axial direction of the pump body, the first high-pressure liquid outlet cavity is arranged close to the pressure transformation cavity, the first high-pressure liquid outlet cavity is communicated with the second high-pressure liquid outlet cavity, and the second high-pressure liquid outlet cavity is communicated with the liquid outlet.
In a preferred embodiment, the pump body comprises a pump body, a first divider and a second divider;
The pump body and the first partition piece are nested, the first partition piece is inserted into the pump body, the first partition piece extends along the axial direction of the pump body, the first partition piece is used for forming a low-pressure liquid inlet cavity, and the first partition piece and the pump body are used for forming a high-pressure liquid outlet cavity;
The second separator is erected between the first separator and the pump body, and extends along the radial direction of the pump body, the second separator separates out first high-pressure liquid outlet sub-cavity and second high-pressure liquid outlet sub-cavity, a plurality of connecting holes are formed in the second separator, the connecting holes are distributed in a circumferential and spaced mode, and the connecting holes are communicated with the first high-pressure liquid outlet sub-cavity and the second high-pressure liquid outlet sub-cavity.
In a preferred embodiment, the pump body further includes a third partition, the first and second partitions are disposed at an upper portion of the pump body, the third partition and the diaphragm are disposed at a lower portion of the pump body, and the third partition and the diaphragm are used to form a plurality of variable pressure chambers.
In a preferred embodiment, the flow direction of the first one-way valve is the direction of the low-pressure liquid inlet cavity to the pressure changing cavity, the first one-way valve comprises a first flexible membrane, the first flexible membrane is arranged in the pressure changing cavity, and the first flexible membrane shields the liquid inlet port;
the flow direction of the second one-way valve is the direction of the pressure changing cavity flowing to the high-pressure liquid outlet cavity, the second one-way valve comprises a second flexible membrane, the second flexible membrane is arranged in the high-pressure liquid outlet cavity, and the second flexible membrane shields the liquid outlet interface;
The liquid inlet and outlet ports are arranged at one end of the pressure changing cavity, and the diaphragm is arranged at the other end of the pressure changing cavity.
In a preferred embodiment, the liquid inlet is provided on one side of the pump body and the liquid outlet is provided on the other side of the pump body.
In a preferred embodiment, the reverse flow damping vibration-isolating diaphragm pump comprises a damping sheet, the damping sheet comprises a first damping part and a second damping part, the first damping part is arranged in the low-pressure liquid inlet cavity, and the second damping part is arranged in the high-pressure liquid outlet cavity.
In a preferred embodiment, the damping fin is of unitary construction.
In a preferred embodiment, the reverse flow damping vibration isolation diaphragm pump comprises a support member, wherein the support member and the pump body are mutually spliced, the axial section of the diaphragm is H-shaped, the upper end of the edge of the diaphragm is spliced with the pump body, and the lower end of the edge of the diaphragm is spliced with the support member.
In a preferred embodiment, the reverse flow damping vibration isolation diaphragm pump comprises a driving unit, an eccentric wheel and a swinging frame, wherein the driving unit drives the swinging frame to move up and down through the eccentric wheel;
the swing frame is fixedly connected with the diaphragm, a plurality of fixing points are arranged between the swing frame and the diaphragm, and at least one fixing point is correspondingly arranged in each transformation cavity.
In summary, the invention has the following technical effects:
1. According to the invention, the low-pressure liquid inlet cavity is arranged at the center part of the pump body, the high-pressure liquid outlet cavity is arranged at the periphery side of the pump body, so that all liquid inlet interfaces are intensively arranged at the center part of the pump body and can be arranged close to the central shaft of the pump body, the distance difference between each liquid inlet interface and each liquid inlet interface is smaller, when the liquid inlet flow is smaller or the liquid inlet flow is unstable, the liquid inlet quantity of each liquid inlet interface is more uniform, the liquid quantity pumped by a plurality of pressure transformation cavities is more uniform, the air pumping in the pressure transformation cavities is avoided, the fluctuation of the liquid inlet pressure can be balanced, and the flow of the pressure transformation cavities, the high-pressure liquid outlet cavity and the liquid outlet are uniform and the pressure is stable.
2. According to the invention, the liquid is pumped into the high-pressure liquid outlet cavity at the peripheral side from the low-pressure liquid inlet cavity at the central part, and the liquid is collected from the center to the periphery, which is different from the flow mode that the liquid is collected from the periphery to the center in the prior art, the liquid is discharged from the liquid inlet through the low-pressure liquid inlet cavity, the pressure-changing cavity, the first high-pressure liquid outlet cavity and the second high-pressure liquid outlet cavity, the first high-pressure liquid outlet cavity conducts primary collection on the liquid in the axial direction of the pump body, the second high-pressure liquid outlet cavity conducts secondary collection on the liquid in the radial direction of the pump body, and the first high-pressure liquid outlet cavity and the second high-pressure liquid outlet cavity conduct secondary buffering on the pressurized liquid, so that the situation of overhigh liquid outlet pressure is avoided; and the first high-pressure liquid outlet separating cavity is provided with liquid storage energy, so that pressure stabilization is realized, and the liquid outlet flow is uniform and pressure is stable.
3. The first high-pressure liquid outlet separating cavity and the second high-pressure liquid outlet separating cavity form a double-layer high-pressure liquid outlet cavity, so that the pulsation of high-pressure liquid outlet can be relieved, the flow rate of liquid outlet can be stabilized, the impact of liquid on pipelines and/or equipment can be reduced, and vibration and noise can be reduced.
4. The low-pressure liquid inlet cavity and the high-pressure liquid outlet cavity have the functions of adjusting, shock insulation and shock absorption; and the damping fin with an integrated structure can improve the pressure fluctuation of liquid in and out and reduce the integral vibration of the reverse flow damping vibration isolation diaphragm pump.
Drawings
FIG. 1 is a schematic view of a first view of a portion of the external structure of a reverse flow damped vibration isolation diaphragm pump according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a second view of the external structure of a reverse flow damping vibration-isolating diaphragm pump according to an embodiment of the present invention;
FIG. 3 is a schematic view of a third view of the external structure of a portion of a reverse flow damping vibration-isolating diaphragm pump according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of the exploded structure of FIG. 1 according to an embodiment of the present invention;
FIG. 5 is a schematic flow diagram of liquid flowing from the low pressure inlet chamber into the variable pressure chamber according to an embodiment of the present invention;
FIG. 6 is a schematic flow diagram of a liquid flowing from a variable pressure chamber into a high pressure liquid outlet chamber according to an embodiment of the present invention;
FIG. 7 is a schematic view of a part of a pump body according to a first view angle;
FIG. 8 is a schematic view of a part of a pump body according to a second view angle of the pump body;
FIG. 9 is a schematic view showing a first view of a third spacer according to an embodiment of the present invention;
FIG. 10 is a schematic view of a third spacer according to a second embodiment of the present invention;
FIG. 11 is a schematic view of a third separator, a first check valve and a second check valve according to a first view angle of the present invention;
Fig. 12 is a schematic structural diagram of a third partition, a first check valve, and a second check valve according to a second view angle of an embodiment of the present invention.
Wherein the reference numerals have the following meanings:
10. Pump body, 101, inlet, 102, low pressure inlet, 103, pressure changing cavity, 104, high pressure outlet, 1041, first high pressure outlet, 1042, second high pressure outlet, 105, outlet, 106, inlet, 107, outlet, 108, pump body, 109, first divider, 110, second divider, 111, connecting hole, 112, third divider, 20, check valve assembly, 201, first check valve, 2011, first flexible membrane, 202, second check valve, 2021, second flexible membrane, 30, membrane, 40, sealing ring, 50, damping fin, 501, first damping portion, 502, second damping portion, 60, support, 70, swing frame, 80, pressure regulating valve.
Detailed Description
For a better understanding and implementation, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention.
In the description of the present invention, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, only for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the apparatus or elements to be referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
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 invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Referring to fig. 1-12, the present invention discloses a reverse flow damping vibration isolation diaphragm pump, comprising: the pump body 10, the pump body 10 is provided with a liquid inlet 101, a low-pressure liquid inlet cavity 102, a pressure changing cavity 103, a high-pressure liquid outlet cavity 104 and a liquid outlet 105, the low-pressure liquid inlet cavity 102 is arranged at the center part of the pump body 10, the high-pressure liquid outlet cavity 104 is arranged at the periphery side of the pump body 10, a plurality of pressure changing cavities 103 are arranged between the low-pressure liquid inlet cavity 102 and the high-pressure liquid outlet cavity 104, the liquid inlet 101 is communicated with the low-pressure liquid inlet cavity 102, the high-pressure liquid outlet cavity 104 is communicated with the liquid outlet 105, the low-pressure liquid inlet cavity 102 is separated from the high-pressure liquid outlet cavity 104, and a plurality of pressure changing cavities 103 are separated from each other; the one-way valve assembly 20, the one-way valve assembly 20 comprises a first one-way valve 201 and a second one-way valve 202, a plurality of liquid inlet ports 106 are arranged between the low-pressure liquid inlet cavity 102 and the pressure changing cavity 103, at least one liquid inlet port 106 is correspondingly arranged in each pressure changing cavity 103, the first one-way valve 201 is arranged at the position of each liquid inlet port 106, a plurality of liquid outlet ports 107 are arranged between the high-pressure liquid outlet cavity 104 and the pressure changing cavity 103, at least one liquid outlet port 107 is correspondingly arranged in each pressure changing cavity 103, and the second one-way valve 202 is arranged at the position of each liquid outlet port 107; the diaphragm 30 is arranged in the pressure changing cavity 103, the diaphragm 30 increases or decreases the pressure changing cavity 103 through movement, and the plurality of pressure changing cavities 103 alternately pump the liquid in the low-pressure liquid inlet cavity 102 into the high-pressure liquid outlet cavity 104 through movement of the diaphragm 30.
Therefore, the low-pressure liquid inlet cavity 102 is arranged at the center part of the pump body 10, the high-pressure liquid outlet cavity 104 is arranged at the periphery side of the pump body 10, so that all liquid inlet interfaces 106 can be arranged at the center part of the pump body 10 in a concentrated manner and are close to the central axis of the pump body 10, the distance between each liquid inlet interface 106 and the liquid inlet 101 is smaller, when the liquid inlet flow is smaller or the liquid inlet flow is unstable, the liquid inlet quantity of each liquid inlet interface 106 is more uniform, the liquid inlet quantity pumped by a plurality of pressure changing cavities 103 is more uniform, air pumped in the pressure changing cavities 103 is avoided, fluctuation of the liquid inlet pressure can be balanced, and the flow of the pressure changing cavities 103, the high-pressure liquid outlet cavity 104 and the liquid outlet 105 are uniform and the pressure is stable.
The invention is particularly suitable for water purifiers, thereby pressurizing water.
Preferably, the low-pressure liquid inlet cavity 102 is arranged at the center of the pump body 10, each liquid inlet port 106 surrounds and is close to the central axis of the pump body 10, the high-pressure liquid outlet cavity 104 is annular, and the high-pressure liquid outlet cavity 104 is sleeved on the outer peripheral side of the low-pressure liquid inlet cavity 102.
Preferably, the diaphragm 30 is of a flexible structure, and the diaphragm 30 is of an integral structure, for example, the diaphragm 30 can be made of rubber or polymer materials, and the diaphragm 30 realizes the alternating change of the volumes of the plurality of variable-pressure cavities 103 through the up-and-down movement deformation of the diaphragm 30; of course, in other embodiments, the diaphragms 30 may be rigid structures, and the diaphragms 30 corresponding to the transformer cavities 103 are independent of each other, so that the volume of the corresponding transformer cavity 103 is changed by changing the up-down position of each diaphragm 30; the specific form of the diaphragm 30 is not limited thereto, depending on the actual application scenario.
In the embodiment of the present invention, the high-pressure liquid outlet cavity 104 includes a first high-pressure liquid outlet cavity 1041 and a second high-pressure liquid outlet cavity 1042, the first high-pressure liquid outlet cavity 1041 and the second high-pressure liquid outlet cavity 1042 are arranged up and down along the axial direction of the pump body 10, the first high-pressure liquid outlet cavity 1041 is disposed near the pressure transformation cavity 103, the first high-pressure liquid outlet cavity 1041 is communicated with the second high-pressure liquid outlet cavity 1042, and the second high-pressure liquid outlet cavity 1042 is communicated with the liquid outlet 105.
In the embodiment of the present invention, the pump body 10 includes a pump body 108, a first partition 109, and a second partition 110; the pump body 108 and the first partition 109 are nested, the first partition 109 is inserted into the pump body 108, the first partition 109 extends along the axial direction of the pump body 108, the first partition 109 is used for forming the low-pressure liquid inlet cavity 102, and the first partition 109 and the pump body 108 are used for forming the high-pressure liquid outlet cavity 104; the second partition member 110 is erected between the first partition member 109 and the pump body 108, and the second partition member 110 extends along the radial direction of the pump body 108, the second partition member 110 partitions the first high-pressure liquid outlet cavity 1041 and the second high-pressure liquid outlet cavity 1042, a plurality of connecting holes 111 are arranged on the second partition member 110, the plurality of connecting holes 111 are circumferentially arranged at intervals, and the connecting holes 111 are communicated with the first high-pressure liquid outlet cavity 1041 and the second high-pressure liquid outlet cavity 1042.
Preferably, the number of the liquid inlet interface 106, the liquid outlet interface 107, the connecting holes 111 and the pressure changing cavities 103 is five, the position of each pressure changing cavity 103 corresponds to one liquid inlet interface 106, one liquid outlet interface 107 and one connecting hole 111, the five pressure changing cavities 103 are arranged around the central axis of the pump body 10, and the five pressure changing cavities 103 are radially arranged; the specific number of the liquid inlet ports 106, the liquid outlet ports 107, the connecting holes 111 and the pressure transformation cavity 103 is determined according to practical application scenarios, and may be two, three, four, six, etc., but is not limited thereto.
Specifically, the size of the connection hole 111 is based on the fact that the flow of the liquid can be achieved.
Specifically, the first high-pressure liquid outlet cavity 1041 may be divided into a plurality of chambers that are mutually communicated or isolated, and the chambers are disposed in one-to-one correspondence with the voltage transformation cavity 103, and the specific shape of the first high-pressure liquid outlet cavity 1041 is determined according to the actual situation, so as to be capable of realizing confluence and buffering.
Preferably, the first high-pressure liquid outlet cavity 1041 is divided into a plurality of chambers which are mutually communicated by arranging a plurality of guide plates, the chamber is formed between two adjacent guide plates, the chamber is a guide chamber, the chamber extends along the axial direction of the pump body 10, two ends of the chamber are respectively and correspondingly provided with a connecting hole 111 and a liquid outlet interface 107, so that not only can the confluence be realized, but also the turbulent flow formed in the first high-pressure liquid outlet cavity 1041 can be avoided, and the realization of pressure stabilization and noise reduction is facilitated.
The multiple pressure-changing cavities 103 pump liquid from the low-pressure liquid inlet cavity 102 at the center part to the high-pressure liquid outlet cavity 104 at the outer peripheral side, and the liquid is converged from the center to the periphery, which is different from the flow mode that the liquid is converged from the periphery to the center in the prior art, in the invention, the flow direction of the liquid in the pump body 10 is opposite to the flow direction of the liquid in the prior art, the liquid is discharged from the liquid inlet 105 through the low-pressure liquid inlet cavity 102, the pressure-changing cavity 103, the first high-pressure liquid outlet cavity 1041 and the second high-pressure liquid outlet cavity 1042, the first high-pressure liquid outlet cavity 1041 converges the liquid for the first time in the axial direction of the pump body 10, the second high-pressure liquid outlet cavity 1042 converges the liquid after the pressurization for the second time in the radial direction of the pump body 10, and the condition that the liquid outlet pressure is too high is avoided; and the first high-pressure outlet liquid separation cavity 1041 has liquid storage energy and a pressure stabilizing function, so that the outlet liquid flow is uniform and the pressure is stable.
The first high-pressure liquid outlet cavity 1041 and the second high-pressure liquid outlet cavity 1042 form a dual-layer high-pressure liquid outlet cavity 104, which can relieve pulsation of high-pressure liquid outlet and stabilize flow velocity of liquid outlet, and reduce impact of liquid on pipelines and/or equipment, such as impact of liquid on waterways of a water purifier, vibration and noise.
In the embodiment of the present invention, the pump body 10 further includes a third partition 112, the first partition 109 and the second partition 110 are disposed at an upper portion of the pump body 108, the third partition 112 and the diaphragm 30 are disposed at a lower portion of the pump body 108, and the third partition 112 and the diaphragm 30 are used to form a plurality of pressure transformation chambers 103.
It is understood that the pump body 108, the first partition 109, the second partition 110 and the third partition 112 may be separately formed and then integrally connected by a screw connection or a welding process; of course, the pump body 108, the first partition 109, the second partition 110, and the third partition 112 may be integrally formed.
In the embodiment of the present invention, the pump body 108, the first partition 109 and the second partition 110 are an integral structure, the integral structure and the third partition 112 are screwed with the integral structure through screws, and the sealing ring 40 is arranged between the integral structure and the integral structure for sealing, which is beneficial to processing and assembly.
Specifically, the pump body 108 and the first separator 109 are both sleeve-shaped, the second separator 110 is plate-shaped, the third separator 112 is casing-shaped, and the specific shapes of the pump body 108, the first separator 109, the second separator 110 and the third separator 112 are determined according to the actual application scenario, but are not limited thereto.
In the embodiment of the present invention, the flow direction of the first check valve 201 is the direction of the low pressure liquid inlet cavity 102 flowing to the pressure changing cavity 103, the first check valve 201 includes a first flexible membrane 2011, the first flexible membrane 2011 is disposed in the pressure changing cavity 103, and the first flexible membrane 2011 shields the liquid inlet port 106; the flow direction of the second one-way valve 202 is the direction of the pressure changing cavity 103 flowing to the high-pressure outlet cavity 104, the second one-way valve 202 comprises a second flexible membrane 2021, the second flexible membrane 2021 is arranged in the high-pressure outlet cavity 104, and the second flexible membrane 2021 shields the outlet interface 107; the liquid inlet 106 and the liquid outlet 107 are both arranged at one end of the pressure changing cavity 103, and the diaphragm 30 is arranged at the other end of the pressure changing cavity 103.
Specifically, the first flexible membrane 2011 and the second flexible membrane 2021 are both flexible structures, and the first flexible membrane 2011 and the second flexible membrane 2021 are made of rubber materials, silica gel materials or polymer materials; in use, the first flexible membrane 2011 is bent and deformed according to the volume and pressure of the pressure-variable cavity 103, so as to open and close the liquid inlet port 106, and the second flexible membrane 2021 is bent and deformed according to the volume and pressure of the pressure-variable cavity 103, so as to open and close the liquid outlet port 107.
In the embodiment of the present invention, the liquid inlet 101 is disposed on one side of the pump body 10, and the liquid outlet 105 is disposed on the other side of the pump body 10.
Specifically, the liquid inlet 101 is provided on one side in the radial direction of the pump body 10, and the liquid outlet 105 is provided on the other side in the radial direction of the pump body 10.
In the embodiment of the invention, the reverse flow damping vibration isolation diaphragm pump comprises a damping sheet 50, the damping sheet 50 comprises a first damping part 501 and a second damping part 502, the first damping part 501 is arranged in the low-pressure liquid inlet cavity 102, and the second damping part 502 is arranged in the high-pressure liquid outlet cavity 104.
In the embodiment of the invention, the damping fin 50 is of an integrated structure, the first damping part 501 and the second damping part 502 are integrally formed, and the damping fin of the integrated structure can improve the pressure fluctuation of liquid in and out and reduce the integral vibration of the reverse flow damping vibration-isolating diaphragm pump.
In the embodiment of the present invention, the pump body 10 is provided with a pressure regulating valve 80.
The low-pressure liquid inlet cavity 102 is internally provided with a first damping part 501, the high-pressure liquid outlet cavity 104 is internally provided with a second damping part 502, and the low-pressure liquid inlet cavity 102 and the high-pressure liquid outlet cavity 104 have the functions of adjusting, isolating vibration and absorbing shock.
Preferably, the damping fin 50 is a flexible structure, and the damping fin 50 is made of a rubber material, a silica gel material or a polymer material, so as to achieve a buffering effect.
Specifically, referring to fig. 5-6, a buffer gap is provided between the second high-pressure liquid outlet chamber 1042 and the damping fin 50, and a pump cover may be additionally provided, the pump cover is covered at an end portion of the pump body 108 in the axial direction, a low-pressure liquid inlet chamber 102 is defined between the pump cover and the first partition 109 and between the pump cover and the third partition 112, and a first high-pressure liquid outlet chamber 1041 is defined between the pump cover and the first partition 109 and between the pump body 108 and the second partition 110; of course, the pump cover portion may also be molded directly onto the pump body 108.
In the embodiment of the invention, the reverse flow damping vibration isolation diaphragm pump comprises a support piece 60, wherein the support piece 60 is mutually spliced with the pump body 10, the axial section of the diaphragm 30 is H-shaped, the upper end of the edge of the diaphragm 30 is spliced with the pump body 10, and the lower end of the edge of the diaphragm 30 is spliced with the support piece 60.
It will be appreciated that the support 60 may be made of multiple parts that are separated and then integrally connected by a screw connection or a welding process; of course, the supporting member 60 may be an integral structure, and is not limited thereto according to the actual application.
In the embodiment of the invention, the reverse flow damping vibration isolation diaphragm pump comprises a driving unit, an eccentric wheel and a swinging frame 70, wherein the driving unit drives the swinging frame 70 to move up and down through the eccentric wheel; the swing frame 70 is fixedly connected with the diaphragm 30, a plurality of fixing points are arranged between the swing frame 70 and the diaphragm 30, and at least one fixing point is correspondingly arranged in each transformation cavity 103.
Specifically, the driving unit and the eccentric wheel are not shown, the driving unit is a motor, and the driving unit, the eccentric wheel and the swinging frame 70 are utilized to perform up-and-down motion, which belongs to the prior art, and are not described herein again; of course, a plurality of cylinders may alternatively drive the diaphragm 30 to alternatively move up and down, so that the diaphragm 30 increases or decreases the pressure-changing cavity 103 through movement, and the plurality of pressure-changing cavities 103 alternately pump the liquid in the low-pressure liquid inlet cavity 102 into the high-pressure liquid outlet cavity 104 through movement of the diaphragm 30.
The specific working process of the invention is as follows:
referring to fig. 5, the actual volume of one of the pressure-changing chambers 103 increases, the first check valve 201 opens the liquid inlet port 106, the second check valve 202 closes the liquid outlet port 107, and liquid enters the pressure-changing chamber 103 from the low-pressure liquid inlet chamber 102;
Referring to fig. 6, the actual volume of the pressure-variable cavity 103 is reduced, the first check valve 201 closes the liquid inlet 106, the second check valve 202 opens the liquid outlet 107, and the liquid enters the first high-pressure liquid-outlet chamber 1041 from the pressure-variable cavity 103 and the second high-pressure liquid-outlet chamber 1042 is discharged from the liquid outlet 105.
It can be understood that each of the pressure-changing chambers 103 of the reverse flow damping vibration-isolating diaphragm pump alternately performs the above-mentioned process, or a group of several pressure-changing chambers 103 are arranged, and the above-mentioned processes are alternately performed in groups, so that the specific working process of each pressure-changing chamber 103 is based on the fact that the pumping of the liquid can be realized.
The technical means disclosed by the scheme of the invention is not limited to the technical means disclosed by the embodiment, and also comprises the technical scheme formed by any combination of the technical features. It should be noted that modifications and adaptations to the invention may occur to one skilled in the art without departing from the principles of the present invention and are intended to be within the scope of the present invention.
Claims (10)
1. A reverse flow damping, shock-isolating diaphragm pump, comprising:
The pump body is provided with a liquid inlet, a low-pressure liquid inlet cavity, a pressure-variable cavity, a high-pressure liquid outlet cavity and a liquid outlet, wherein the low-pressure liquid inlet cavity is arranged at the central part of the pump body, the high-pressure liquid outlet cavity is arranged at the peripheral side of the pump body, a plurality of pressure-variable cavities are arranged between the low-pressure liquid inlet cavity and the high-pressure liquid outlet cavity, the liquid inlet and the low-pressure liquid inlet cavity are communicated with each other, the high-pressure liquid outlet cavity and the liquid outlet are communicated with each other, the low-pressure liquid inlet cavity and the high-pressure liquid outlet cavity are separated from each other, and a plurality of pressure-variable cavities are separated from each other;
The one-way valve assembly comprises a first one-way valve and a second one-way valve, a plurality of liquid inlet interfaces are arranged between the low-pressure liquid inlet cavity and the pressure transformation cavity, at least one liquid inlet interface is correspondingly arranged in each pressure transformation cavity, the first one-way valve is arranged at the position of each liquid inlet interface, a plurality of liquid outlet interfaces are arranged between the high-pressure liquid outlet cavity and the pressure transformation cavity, at least one liquid outlet interface is correspondingly arranged in each pressure transformation cavity, and the second one-way valve is arranged at the position of each liquid outlet interface;
The diaphragm is arranged in the pressure changing cavity, the diaphragm increases or decreases the pressure changing cavity through movement, and the plurality of pressure changing cavities alternately pump liquid in the low-pressure liquid inlet cavity into the high-pressure liquid outlet cavity through movement of the diaphragm.
2. The reverse flow damped vibration isolation diaphragm pump of claim 1, wherein: the high-pressure liquid outlet cavity comprises a first high-pressure liquid outlet cavity and a second high-pressure liquid outlet cavity, the first high-pressure liquid outlet cavity and the second high-pressure liquid outlet cavity are arranged up and down along the axial direction of the pump body, the first high-pressure liquid outlet cavity is close to the pressure transformation cavity, the first high-pressure liquid outlet cavity is communicated with the second high-pressure liquid outlet cavity, and the second high-pressure liquid outlet cavity is communicated with the liquid outlet.
3. The reverse flow damped vibration isolation diaphragm pump of claim 2, wherein: the pump body comprises a pump body, a first partition piece and a second partition piece;
The pump body and the first separator are nested, the first separator is inserted into the pump body, the first separator extends along the axial direction of the pump body, the first separator is used for forming the low-pressure liquid inlet cavity, and the first separator and the pump body are used for forming the high-pressure liquid outlet cavity;
The second separating piece is erected between the first separating piece and the pump body, the second separating piece extends along the radial direction of the pump body, the second separating piece separates out the first high-pressure liquid outlet separating cavity and the second high-pressure liquid outlet separating cavity, a plurality of connecting holes are formed in the second separating piece, the connecting holes are annularly arranged at intervals, and the connecting holes are communicated with the first high-pressure liquid outlet separating cavity and the second high-pressure liquid outlet separating cavity.
4. A counter flow damped vibration isolation diaphragm pump according to claim 3, wherein: the pump body further comprises a third partition, the first partition and the second partition are arranged on the upper portion of the pump body, the third partition and the diaphragm are arranged on the lower portion of the pump body, and the third partition and the diaphragm are used for forming a plurality of pressure changing cavities.
5. The reverse flow damped vibration isolation diaphragm pump of claim 1, wherein: the flow direction of the first one-way valve is the direction of the low-pressure liquid inlet cavity flowing to the pressure changing cavity, the first one-way valve comprises a first flexible diaphragm, the first flexible diaphragm is arranged in the pressure changing cavity, and the first flexible diaphragm shields the liquid inlet interface;
the flow direction of the second one-way valve is the direction of the pressure changing cavity flowing to the high-pressure liquid outlet cavity, the second one-way valve comprises a second flexible diaphragm, the second flexible diaphragm is arranged in the high-pressure liquid outlet cavity, and the second flexible diaphragm shields the liquid outlet interface;
The liquid inlet interface and the liquid outlet interface are both arranged at one end of the pressure transformation cavity, and the diaphragm is arranged at the other end of the pressure transformation cavity.
6. The reverse flow damped vibration isolation diaphragm pump of claim 1, wherein: the liquid inlet is arranged on one side of the pump body, and the liquid outlet is arranged on the other side of the pump body.
7. The reverse flow damped vibration isolation diaphragm pump of claim 1, wherein: the low-pressure liquid inlet cavity is internally provided with the first damping part, and the high-pressure liquid outlet cavity is internally provided with the second damping part.
8. The reverse flow damped vibration isolation diaphragm pump of claim 7, wherein: the damping fin is of an integrated structure.
9. The reverse flow damped vibration isolation diaphragm pump of claim 1, wherein: the novel diaphragm comprises a supporting piece, wherein the supporting piece is mutually spliced with the pump body, the axial section of the diaphragm is H-shaped, the upper end of the edge of the diaphragm is spliced with the pump body, and the lower end of the edge of the diaphragm is spliced with the supporting piece.
10. The reverse flow damped vibration isolation diaphragm pump of claim 1, wherein: the device comprises a driving unit, an eccentric wheel and a swinging frame, wherein the driving unit drives the swinging frame to move up and down through the eccentric wheel;
the swing frame is fixedly connected with the diaphragm, a plurality of fixing points are arranged between the swing frame and the diaphragm, and each pressure transformation cavity is internally provided with at least one fixing point.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410583866.3A CN118148892B (en) | 2024-05-11 | 2024-05-11 | Reverse flow damping vibration isolation diaphragm pump |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410583866.3A CN118148892B (en) | 2024-05-11 | 2024-05-11 | Reverse flow damping vibration isolation diaphragm pump |
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| Publication Number | Publication Date |
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| CN118148892A true CN118148892A (en) | 2024-06-07 |
| CN118148892B CN118148892B (en) | 2024-07-02 |
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| CN202410583866.3A Active CN118148892B (en) | 2024-05-11 | 2024-05-11 | Reverse flow damping vibration isolation diaphragm pump |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160305410A1 (en) * | 2013-12-13 | 2016-10-20 | Graco Minnesota Inc. | High-pressure to low-pressure changeover valve for a positive displacement pump |
| CN109026627A (en) * | 2018-05-30 | 2018-12-18 | 蔡应麟 | A kind of exhaust structure and its method for exhausting of diaphragm pump |
| CN114922800A (en) * | 2022-07-22 | 2022-08-19 | 佛山市顺德区美的洗涤电器制造有限公司 | Booster pump head, diaphragm booster pump and water treatment equipment |
| CN218542556U (en) * | 2022-09-19 | 2023-02-28 | 福建爱的电器有限公司 | Pump body structure of diaphragm pump |
| CN219654855U (en) * | 2023-06-01 | 2023-09-08 | 王芳林 | Miniature electric diaphragm pump |
-
2024
- 2024-05-11 CN CN202410583866.3A patent/CN118148892B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20160305410A1 (en) * | 2013-12-13 | 2016-10-20 | Graco Minnesota Inc. | High-pressure to low-pressure changeover valve for a positive displacement pump |
| CN109026627A (en) * | 2018-05-30 | 2018-12-18 | 蔡应麟 | A kind of exhaust structure and its method for exhausting of diaphragm pump |
| CN114922800A (en) * | 2022-07-22 | 2022-08-19 | 佛山市顺德区美的洗涤电器制造有限公司 | Booster pump head, diaphragm booster pump and water treatment equipment |
| CN218542556U (en) * | 2022-09-19 | 2023-02-28 | 福建爱的电器有限公司 | Pump body structure of diaphragm pump |
| CN219654855U (en) * | 2023-06-01 | 2023-09-08 | 王芳林 | Miniature electric diaphragm pump |
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| Publication number | Publication date |
|---|---|
| CN118148892B (en) | 2024-07-02 |
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