CN207701340U - A kind of pressure limiting pump - Google Patents
A kind of pressure limiting pump Download PDFInfo
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- CN207701340U CN207701340U CN201820064321.1U CN201820064321U CN207701340U CN 207701340 U CN207701340 U CN 207701340U CN 201820064321 U CN201820064321 U CN 201820064321U CN 207701340 U CN207701340 U CN 207701340U
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Abstract
The utility model discloses a kind of pressure limiting pumps, including pump head body, further include the pressure relief assembly being installed in pump head body, the pressure relief assembly is for throttling to source aquaporin；Further include the reflux assembly being installed in pump head body, the reflux assembly is set between high pressure runner and low pressure chamber two, and the reflux assembly is used to control the connected state between high pressure runner and low pressure chamber two.This pressure limiting pumps a kind of form as booster pump, can not only complete source water supercharging, while can limit the output pressure of output end.
Description
Technical field
The utility model is related to conveying equipment for fluid substances technical fields, are pumped more particularly to a kind of pressure limiting.
Background technology
Booster pump is the equipment for doing work to fluid important in fluid delivery process, in existing industrial production and the mankind
There is extensive utilization in life.
Reverse osmosis water purifier is a kind of important form in domestic water purifying machine, to source water during osmosis filtration
There are certain pressure requirements, and more have certain steady requirement to the pressure, such source water can effectively pass through reverse osmosis
Permeable membrane produces more preferable more guaranteed clean water, and hypotony or the excessively high normal water processed for being all unable to reach reverse osmosis membrane are wanted
It asks.Therefore, the performance of booster pump directly affects the performance of reverse osmosis water purifier.
In terms of the function setting of existing booster pump, it is exported and has great defect, Wu Fashi in the limitation of hydraulic pressure
The performance of existing voltage stabilizing, especially in the case of source water water pressure fluctuations are larger, the output pressure of booster pump can be with source water hydraulic pressure
It fluctuates and generates and neglect low suddenly high phenomenon, when especially source water pressure increases, since source water hydraulic pressure and booster pump supercharging are imitated
The superposition of fruit usually will produce the excessively high phenomenon of booster pump output hydraulic pressure.It is light then be also easy to produce household reverse osmosis water purifier leak, weight
It can then cause the Partial filtration unit in household water-purifying machine machine to burst, serious product safety accident occurs.Therefore, in a word
Come, the restriction of booster pump output hydraulic pressure has become the key issues of household water-purifying machine industry technology promotion.
Utility model content
The utility model is for the important equipment that booster pump set forth above is in reverse osmosis water purifier, the performance of booster pump
The problem of directly affecting the performance of reverse osmosis water purifier, provides a kind of pressure limiting pump, this pressure limiting pumps a kind of shape as booster pump
Formula can not only complete source water supercharging, while can limit the output pressure of output end.
A kind of pressure limiting pump provided by the utility model is solved the problems, such as by following technical essential：A kind of pressure limiting pump, including
Pump head body, is provided with low pressure chamber two, high pressure chest, reflux assembly in the pump head body, low pressure chamber two, high pressure chest respectively with water inlet
Mouthful, water outlet connect, the water route that water inlet and low pressure chamber two are connected is equipped with pressure relief assembly, reflux assembly both ends respectively with low pressure
Chamber two, high pressure chest are connected,
The pressure relief assembly includes spring one, control piece, seal head, sealing ring and pressure-sensitive diaphragm；It is set on the pump head body
It is equipped with the first installation cavity surrounded by pump head body and gland two, the pressure-sensitive diaphragm is opened as control piece top and the first installation cavity
The intermediate connector at mouth end, and sealing element of the pressure-sensitive diaphragm as gap between control piece top and the first installation cavity open end；
Further include water inlet pipe, one end of the water inlet pipe is water inlet, and the other end of water inlet pipe is water cut off device；Water shutoff oral area
The water inlet pipe pipeline section of position is introduced by the bottom of the first installation cavity in the first installation cavity；
The bottom end of control piece is embedded in the first installation cavity, and the bottom of control piece surrounds air chamber with the first installation cavity, is sealed
Source water cavity is constituted between head and water cut off device, further includes the gland two being connected with pump head body, gland two, pump head body, pressure-sensitive diaphragm, control
Low pressure chamber one is surrounded between product；
The control piece is to be provided with the column structure of through-hole, and the through-hole runs through the bottom end and top of control piece
End, the through-hole include the lower end through-hole close to control piece bottom and the low pressure through-hole at the top of control piece, the low pressure chamber
One is connected with water inlet pipe by the through-hole on control piece, and the low pressure chamber one is connected with low pressure chamber two by communicating passage；
Spring one is installed in the air chamber, and the elastic force of spring one is oriented parallel to the length direction of lower end through-hole；
The water inlet pipe pipeline section at water cut off device position is inserted into the through-hole of lower end；
The seal head is installed on control piece, and seal head is matched with water cut off device；
The sealing ring is as the axial sealing ring between the water inlet pipe pipeline section and lower end through-hole at water cut off device position；
Source water cavity fluid is A to the hydraulic pressure area of control piece hydraulic pressure direction towards pressure-sensitive diaphragm side, in low pressure chamber one
It is B that fluid, which generates pressure relief assembly the hydraulic pressure area for forcing control piece to be moved to water cut off device, and B is more than A, and control piece is made in hydraulic pressure
It can be moved reciprocatingly along the depth direction of the first installation cavity with lower.
In the present solution, water inlet pipe, source water cavity, low pressure chamber one, communicating passage, low pressure chamber two are respectively the upper source of this pressure limiting pump
A part for aquaporin, pipeline section is the circulation passage of water after being pressurized on this pressure limiting pump between high pressure chest, high pressure chest and water outlet：
It is pressurized aquaporin.When source, water enters in low pressure chamber one, and since the B is more than A, hydraulic pressure is enough pressure caused by pressure relief assembly
Overcome the elastic force of spring one, and then change position of the control piece in the first installation cavity, between causing between seal head and water cut off device
Gap changes, and can reach the purpose realized by pressure relief assembly and adjust hydraulic pressure.
Preferably, the set-up mode of above first installation cavity be the first installation cavity depth direction along vertical direction
When, it is set as：Water inlet pipe is made of horizontal segment and vertical section, and the end of horizontal segment is water inlet, and water inlet is located at pump head body
The end of outside, vertical section is seal head, and vertical section is embedded in by the first installation cavity bottom in the first installation cavity, and vertical section is upper
In the embedded lower end through-hole in end, sealing ring is as the axial sealing ring between vertical section and lower end through-hole.
Further technical solution is：
As a kind of control piece implementation for facilitating pressure relief assembly to assemble, the control piece includes upper control piece and lower control
Product, the upper control piece are threadedly coupled with lower control piece, and fixation of the pressure-sensitive diaphragm on control piece passes through in pressure-sensitive diaphragm
Side is held between control piece and lower control piece and realizes；
It is provided on the lower control piece in the poroid centre bore of step, sealing ring is mounted in the centre bore, described
Upper control piece is threadedly connected in the centre bore, and upper control piece is deeply into the step on the end face of hole one end and centre bore
Face limits position of the sealing ring on centre bore axis.
Mounting means as the specific implementation of reflux assembly and on pump head body is provided on the pump head body
Second installation cavity, the reflux assembly are installed in second installation cavity, the reflux assembly include gland one, gasket,
Pressing plate one and spring two.
The gland one is fixedly connected on pump head body, and the side and the side of pressing plate one of gasket are affixed, the spring
Two are held between one other end of pressing plate and gland one, and play partition supercharging aquaporin in gasket is connected to feelings with return flow line
Under condition, the other side of the gasket and the bottom of the second installation cavity are affixed, and the hydraulic pressure suffered by gasket is more than the bullet of spring two
When power, the side where the gasket towards pressing plate one moves.In the present solution, completing the spring two after assembly is in compression shape
State, after spring two is transferred to gasket to the elastic force of pressing plate one, caused by supercharging both aquaporin and return flow line hydraulic pressure
When towards elastic force of the insufficient pressure of pressing plate one to overcome spring two, gasket is in and blocks station；And supercharging aquaporin with
When the pressure change of both return flow lines causes gasket to be pushed away by the bottom of the second installation cavity, water pressure pushing gasket is to spring
Two places side move so that gasket is in seal failure station.And as those skilled in the art, by as above analyzing, due to
The interior pressure of return flow line can be controlled by pressure relief assembly, therefore the principal element for influencing gasket movement comes from supercharging aquaporin
Pressure, i.e., pressurized water in-passage pressure increase to a certain extent when, reflux assembly control return flow line work.It is used as ability simultaneously
Field technique personnel beyond all doubt can obtain, mainly be determined by the deformation of the parameter of spring two and spring two with upper threshold value.
The utility model has the advantages that：
In the present solution, reflux assembly is set by being pumped in pressure limiting, and setting pressure relief assembly, source water can not only be completed
Supercharging, while the output pressure of output end can be limited.
Description of the drawings
Attached drawing described herein is used for providing further understanding the utility model embodiment, constitutes the one of the application
Part does not constitute the restriction to the utility model embodiment.In the accompanying drawings：
Fig. 1 is the structure sectional view that a kind of pressure limiting provided by the utility model pumps a specific embodiment；
Fig. 2 is the sectional view that the directions A-A shown in FIG. 1 along in Fig. 1 carry out section view.
Label and corresponding parts title in attached drawing：01, water inlet, 02, pump head body, 03, spring one, 04, sealing ring,
05, water cut off device, 06, source water cavity, 07, air chamber, 08, water outlet, 09, high pressure chest, 10, high pressure seal ring, 11, low pressure runner, 12,
Spring two, 13, pressing plate one, 14, gasket, 15, gland one, 16, high pressure runner, 17, upper control piece, 18, seal head, 19, low
Press chamber one, 20, low pressure through-hole, 21, gland two, 22, pressure-sensitive diaphragm, 23, lower control piece, 24, source water flow passage, 25, communicating passage,
26, low pressure chamber two.
Specific implementation mode
To make the purpose of this utility model, technical solution and advantage be more clearly understood, with reference to embodiment and attached drawing,
The utility model is described in further detail, and the exemplary embodiment and its explanation of the utility model are only used for explaining this
Utility model is not intended to limit the scope of the present invention.
Embodiment 1：
As depicted in figs. 1 and 2, a kind of pressure limiting pumps, including pump head body 02, and low pressure chamber two is provided in the pump head body 02
26, high pressure chest 09, reflux assembly, low pressure chamber 2 26, high pressure chest 09 are connected with water inlet 01, water outlet 08 respectively, water inlet 01
It is equipped with pressure relief assembly with the water route that low pressure chamber 2 26 is connected, reflux assembly both ends connect with low pressure chamber 2 26, high pressure chest 09 respectively
It is logical,
The first installation cavity surrounded by pump head body 02 and gland 2 21 is provided on the pump head body 02；The pressure relief assembly
Including spring 1, control piece, seal head 18, sealing ring 04 and pressure-sensitive diaphragm 22, the control piece is to be provided with through-hole
Column structure, and the through-hole runs through the bottom end and top of control piece, and the through-hole is made of two sector hole sections, two sector hole section packets
It includes lower end through-hole and the low pressure through-hole 20 at the top of control piece, two hole sections close to control piece bottom and passes through the tangent company in end
It is logical；
The bottom end of control piece is embedded in the first installation cavity, and the bottom of control piece surrounds air chamber 07, bullet with the first installation cavity
Spring 1 is installed in the air chamber 07, and the elastic force of spring 1 is oriented parallel to the length direction of lower end through-hole；
Intermediate connector of the pressure-sensitive diaphragm 22 as control piece top and the first installation cavity open end, and pressure-sensitive diaphragm
22 sealing element as gap between control piece top and the first installation cavity open end；
Further include water inlet pipe, one end of the water inlet pipe is water inlet 01, and the other end of water inlet pipe is going out for water cut off device 05
Water end (W.E.) is discharged the water inlet pipe pipeline section at end position and is inserted into the through-hole of lower end by the aperture of lower end through-hole；
The seal head 18 is installed on control piece, and seal head 18 is matched with water cut off device 05；
The sealing ring 04 is as the axial sealing ring between water inlet tube wall and lower end through-hole；
When introducing source water by water inlet pipe, source water cavity 06 is constituted between seal head 18 and water cut off device 05, further includes and pump head
The connected gland 2 21 of body 02, low pressure chamber 1 is surrounded between gland 2 21, pump head body 02, pressure-sensitive diaphragm 22, control piece,
The low pressure chamber 1 is connected with water inlet pipe by the through-hole on control piece, and the low pressure chamber 1 passes through company with low pressure chamber 2 26
Circulation passage 25 is connected；
Fluid is A, low pressure chamber to the hydraulic pressure area of control piece hydraulic pressure direction towards 22 side of pressure-sensitive diaphragm in source water cavity 06
It is B that fluid, which generates pressure relief assembly the hydraulic pressure area for forcing control piece to be moved to water inlet pipe water outlet side, in one 19, and B is more than A,
And when control piece moves reciprocatingly under the pressure effect of water along the depth direction of the first installation cavity, water inlet pipe is embedded in lower end
Depth in through-hole changes.
When the above pressure limiting pump plays water function of increasing pressure, if water pressure after supercharged is excessive, after being pumped to being connected to this pressure limiting
The equipment at end impacts, and when such as the pressure of water after supercharged is more than follow-up pressure resistant vessel bearing capacity, can cause follow-up equipment
By destruction safety accident etc. even occurs for cisco unity malfunction, pressure resistant vessel.
In the present solution, water inlet pipe, source water cavity 06, low pressure through-hole 20, low pressure chamber 1, communicating passage 25, low pressure chamber 2 26
It is respectively a part for the upper source aquaporin of this pressure limiting pump, pipeline section is this limit between high pressure chest 09, high pressure chest 09 and water outlet 08
The circulation passage of water after being pressurized on press pump：It is pressurized aquaporin.When source water by water inlet pipe introduce source water cavity 06 after, lower end through-hole
The conducting of two hole sections is realized with the tangent position of low pressure through-hole 20, in this way, source water enters pressure-sensitive diaphragm 22 by low pressure through-hole 20
Side far from the first installation cavity bottom enters in low pressure chamber 1.Since the numerical value of the B and A is different, the B and A's
When concrete numerical value determines that hydraulic pressure changes in the aquaporin of source, size of the hydraulic pressure to pressure produced by pressure relief assembly：It may make
Pressure relief assembly has the hydraulic pressure resultant force towards the first installation cavity bottom always under the pressure of source water, when source water pressure changes,
It changes along the resultant force size of the depth direction hydraulic pressure of the first installation cavity, the bullet of the above resultant force size synthesis spring 1
Power can reach the purpose for changing control piece position in the first installation cavity, and after the above position change, seal head 18 and water cut off device
Gap changes between 05, and the above gap is the channel section on the aquaporin of source, in this way, the circulation area of the channel section changes
After change, the purpose depressurized to higher raw water hydraulic pressure by pressure relief assembly can reach.And can be obtained as those skilled in the art,
When space for installing spring 1 is a closed air chamber 07, consider control piece along the first installation cavity depth direction
When the resultant force of stress, it is equivalent to that there is also the active forces of an air spring；Since the outer rim needs of pressure-sensitive diaphragm 22 are fixed
In the outside of the first installation cavity opening, in this way, the concrete numerical value of the above B is actually an Effective Numerical：Such as pressure-sensitive diaphragm 22
It is top surface close to the side of low pressure chamber 1, pressure-sensitive diaphragm 22 is bottom surface close to the side of the first installation cavity, when the office in bottom surface
When portion is supported by the first installation cavity open end end face, the corresponding top surface areas in bottom surface region supported is under influence of hydraulic pressure, no
The power for forcing control piece to be moved to water inlet pipe water outlet side can be generated.
Embodiment 2：
As depicted in figs. 1 and 2, the present embodiment is further qualified on the basis of embodiment 1：
As it is a kind of facilitate pressure relief assembly assemble control piece implementation, the control piece include upper control piece 17 and under
Control piece 23, the upper control piece 17 are threadedly coupled with lower control piece 23, and pressure-sensitive diaphragm 22 is annular in shape, and pressure-sensitive diaphragm 22 is controlling
Fixation on part, which is held in by the inside of pressure-sensitive diaphragm 22 between upper control piece 17 and lower control piece 23, to be realized；
It being provided on the lower control piece 23 in the poroid centre bore of step, sealing ring 04 is mounted in the centre bore,
The upper control piece 17 is threadedly connected in the centre bore, end face and centre bore of the upper control piece 17 deeply into hole one end
On step surface limit position of the sealing ring 04 on centre bore axis.
Fluid self-energy can be utilized as one kind, realizes whether reflux assembly control supercharging aquaporin leads with source aquaporin
Logical realization method, the reflux assembly are led to according to the hydraulic pressure of fluid in supercharging both aquaporin and return flow line with pressurized water
The pressure of fluid is as power, the connected state of control supercharging aquaporin and return flow line in road and return flow line：When described two
When being more than given threshold to the pressure of gasket 14 caused by the hydraulic pressure of fluid in person, supercharging aquaporin connects with return flow line
It is logical.
Specific implementation as reflux assembly and the mounting means on pump head body 02, the reflux assembly include
Gland 1, gasket 14, pressing plate 1 and spring 2 12 are provided with the second installation cavity, the reflux on the pump head body 02
Component is installed in second installation cavity, and the second installation cavity is communicated with supercharging aquaporin and return flow line, and the second installation
Chamber and the crosspoint of supercharging aquaporin and return flow line are respectively positioned on the bottom of the second installation cavity；
The gland 1 is fixedly connected on pump head body 02, and the side and the side of pressing plate 1 of gasket 14 are affixed,
The spring 2 12 is held between one 13 other end of pressing plate and gland 1, and partition supercharging aquaporin is played in gasket 14
With under the connection situation of return flow line, the other side of the gasket 14 and the bottom of the second installation cavity are affixed, in 14 institute of gasket
When being more than the elastic force of spring 2 12 by the pressure of water, the side where the gasket 14 towards pressing plate 1 moves.This programme
In, it completes the spring 2 12 after assembly and is in compressive state, after the elastic force of 2 12 pairs of pressing plates 1 of spring is transferred to gasket 14,
In being pressurized both aquaporin and return flow line fluid to the insufficient pressure of water caused by gasket 14 to overcome spring 2 12
Elastic force when, gasket 14 be in block station；And the pressure change in supercharging aquaporin and both return flow lines causes to seal
When pad 14 is pushed away by the bottom of the second installation cavity, water pushes gasket 14 to be moved to 2 12 place side of spring so that at gasket 14
In seal failure station.And as those skilled in the art, by as above analyzing, since the interior pressure of return flow line can be by depressurizing
Component controls, therefore influences the principal element that gasket 14 moves and come from the pressure being pressurized in aquaporin, that is, is pressurized in aquaporin
When pressure is increased to a certain extent, reflux assembly controls return flow line work.It simultaneously can be beyond all doubt as those skilled in the art
It obtains, is mainly determined by the deformation of the parameter of spring 2 12 and spring 2 12 with upper threshold value.
The gland 1 is the column structure for being provided with blind hole, open end the second installation cavity of direction of the blind hole
Bottom, the spring 2 12 is installed in the blind hole, and the side of the pressing plate 1 and the side of blind hole are affixed.This programme
In, blind hole has guide function to pressing plate 1, can reach the purpose for reducing radial-deformation when spring is further compressed, and
The size of friction when the reduction of the above radial-deformation can reduce reflux assembly action.
The pressing plate 1 is in ladder shaft-like, and the end of spring 2 12 acts on the step surface of pressing plate 1, and pressing plate
One 13 are embedded in towards one end of gland 1 in the endoporus of spring 2 12；
The inside of spring 2 12 and pressing plate 1 towards being affixed on the outside of one end of gland 1, the outside of spring 2 12 with
The bottom hole of blind hole is affixed.In the present solution, pressing plate 1 can be used for constraining the deformation of spring 2 12, blind hole can be used for bullet
The deformation of spring 2 12 is constrained, and the purpose for reducing radial-deformation when spring is further compressed is can reach, and above radial
The size of friction when the reduction of deflection can reduce reflux assembly action.
The hole depth direction that structure provided in this embodiment is such as installed as the first installation cavity is located at vertical direction, and the first installation
The bottom of chamber of chamber downward when, in pressure limiting pump work, as depicted in figs. 1 and 2, the circulation that source water is entered water inlet pipe by water inlet 01 is empty
Between be source water flow passage 24, water inlet pipe outlet end as the cavity between water cut off device 05 and seal head 18 be source water cavity 06, depressurize
When component acts, the size of source water cavity 06 changes, and the negotiability of source water cavity 06 also changes.Simultaneously in water cut off device 05
When being completely attached to seal head 18, source aquaporin is truncated completely.Along the flow direction of source water, the source water at 05 rear of water cut off device
Channel part is the downstream of source aquaporin.A part of the source water cavity 06 as source aquaporin, source water can pass through source water cavity 06
It is flowed in the hole section of the side side of continuing up, the hydraulic pressure of the hole section of above-mentioned top in it is due to the downstream in throttle point, therefore phase
It is low-pressure channel for the channel of throttle point upstream, then fluid enters 22 top of pressure-sensitive diaphragm by low pressure through-hole 20
In low pressure chamber 1, low pressure chamber 1 is also a part for source aquaporin.Meanwhile it being set in the pump head body 02 below pressure relief assembly
The low pressure chamber 2 26 communicated with low pressure chamber 1 is set, and low pressure chamber 2 26 is connected to low pressure chamber 1 by communicating passage 25, together
Boundary of the Shi Liyong high pressures seal ring 10 as supercharging aquaporin, supercharging aquaporin are the high pressure chest 09 in this pressure limiting pump.And it returns
Flow at component, the part that supercharging aquaporin and gasket 14 act on is high pressure runner 16, return flow line be shown in lowpressure stream
Road 11, one end of low pressure runner 11 are communicated with the second installation cavity, and the other end of low pressure runner 11 is communicated with low pressure chamber 2 26.Into
The detailed process of fluid of this pressure limiting pump is：By water inlet 01 enter source water flow passage 24, and after through water cut off device 05 outflow after enter
Source water cavity 06 then enters low pressure through-hole 20 by source water cavity 06, then enters low pressure chamber 1 by low pressure through-hole 20, then by low
Chamber 1 is pressed to enter low pressure chamber 2 26 by communicating passage 25, then supercharging device is high by being sent into after the water suction supercharging of low pressure chamber 2 26
Chamber 09 is pressed, the water outlet 08 for pumping out water for this pressure limiting is connected on high pressure chest 09, high pressure runner 16, low pressure runner 11 are as this
The return flow path of pressure limiting pump, under the action of reflux assembly, with two kinds of working conditions return flow path conducting or blocked.
In the present embodiment, for convenience of the installation of pressure relief assembly, be set as further include and 02 bolted gland of pump head body
2 21, the outside of the sealing plate that the gland 2 21 is isolated from the outside as low pressure chamber 1, pressure-sensitive diaphragm 22 is held in gland
Between 2 21 and pump head body 02.
As those skilled in the art, it is above as low pressure runner 11, high pressure runner 16, low pressure chamber 1, low pressure chamber 2 26,
High pressure, low pressure in high pressure chest 09, high pressure seal ring 10 etc., only actually are according to fluid circulating path when this pressure limiting pump work
Existing pressure difference, is named difference, the qualifiers such as the above low pressure, high pressure are not to runner, cavity, component in upper each section
In the presence of the effect for referring to specified pressure.
Above-described specific implementation mode, to the purpose of this utility model, technical solution and advantageous effect carried out into
One step is described in detail, it should be understood that the foregoing is merely specific embodiment of the present utility model, is not used to limit
Determine the scope of protection of the utility model, within the spirit and principle of the utility model, any modification for being made equally is replaced
It changes, improve, should be included within the scope of protection of this utility model.
Claims (1)
1. a kind of pressure limiting pump, including pump head body (02), the pump head body (02) is interior to be provided with low pressure chamber two (26), high pressure chest
(09), reflux assembly, low pressure chamber two (26), high pressure chest (09) are connected with water inlet (01), water outlet (08) respectively, water inlet
(01) water route connected with low pressure chamber two (26) is equipped with pressure relief assembly, reflux assembly both ends respectively with low pressure chamber two (26), high
Chamber (09) is pressed to connect,
It is characterized in that, the pressure relief assembly includes spring one (03), control piece, seal head (18), sealing ring (04) and pressure-sensitive
Diaphragm (22)；The first installation cavity surrounded by pump head body (02) and gland two (21) is provided on the pump head body (02), it is described
Intermediate connector of the pressure-sensitive diaphragm (22) as control piece top and the first installation cavity open end, and pressure-sensitive diaphragm (22) is as control
The sealing element in gap between product top and the first installation cavity open end；
Further include water inlet pipe, one end of the water inlet pipe is water inlet (01), and the other end of water inlet pipe is water cut off device (05)；Water shutoff
The water inlet pipe pipeline section at mouth (05) position is introduced by the bottom of the first installation cavity in the first installation cavity；
The bottom end of control piece is embedded in the first installation cavity, and the bottom of control piece surrounds air chamber (07) with the first installation cavity, is sealed
Source water cavity (06) is constituted between head (18) and water cut off device (05), further includes the gland two (21) being connected with pump head body (02), gland
Low pressure chamber one (19) is surrounded between two (21), pump head body (02), pressure-sensitive diaphragm (22), control piece；
The control piece is to be provided with the column structure of through-hole, and the through-hole runs through the bottom end and top of control piece, institute
It includes the lower end through-hole close to control piece bottom and the low pressure through-hole (20) at the top of control piece, the low pressure chamber one to state through-hole
(19) it is connected by the through-hole on control piece with water inlet pipe, the low pressure chamber one (19) is (logical by being connected to low pressure chamber two (26)
Road (25) is connected；
Spring one (03) is installed in the air chamber (07), and the elastic force of spring one (03) is oriented parallel to the length of lower end through-hole
Direction；
The water inlet pipe pipeline section at water cut off device (05) position is inserted into the through-hole of lower end；
The seal head (18) is installed on control piece, and seal head (18) is matched with water cut off device (05)；
The sealing ring (04) is as the axial sealing ring between the water inlet pipe pipeline section and lower end through-hole at water cut off device (05) position；
Source water cavity (06) interior fluid is to control piece hydraulic pressure direction towards pressure-sensitive diaphragm 22) the hydraulic pressure area of side is A, low pressure chamber one
(19) it is B that interior fluid, which generates pressure relief assembly the hydraulic pressure area for forcing control piece to be moved to water cut off device (05), and B is more than A, and controls
Part can move reciprocatingly under hydraulic pressure effect along the depth direction of the first installation cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820064321.1U CN207701340U (en) | 2018-01-12 | 2018-01-12 | A kind of pressure limiting pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820064321.1U CN207701340U (en) | 2018-01-12 | 2018-01-12 | A kind of pressure limiting pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207701340U true CN207701340U (en) | 2018-08-07 |
Family
ID=63035316
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820064321.1U Expired - Fee Related CN207701340U (en) | 2018-01-12 | 2018-01-12 | A kind of pressure limiting pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207701340U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108005892A (en) * | 2018-01-12 | 2018-05-08 | 佛山市钻力电器科技有限公司 | A kind of pressure limiting pump |
-
2018
- 2018-01-12 CN CN201820064321.1U patent/CN207701340U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108005892A (en) * | 2018-01-12 | 2018-05-08 | 佛山市钻力电器科技有限公司 | A kind of pressure limiting pump |
| CN108005892B (en) * | 2018-01-12 | 2024-02-06 | 佛山市钻力电器科技有限公司 | Pressure limiting pump |
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