CN108730149A - Pneumatic type double-acting pump - Google Patents
Pneumatic type double-acting pump Download PDFInfo
- Publication number
- CN108730149A CN108730149A CN201710255916.5A CN201710255916A CN108730149A CN 108730149 A CN108730149 A CN 108730149A CN 201710255916 A CN201710255916 A CN 201710255916A CN 108730149 A CN108730149 A CN 108730149A
- Authority
- CN
- China
- Prior art keywords
- partition
- room
- type double
- pneumatic type
- rooms
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B9/00—Piston machines or pumps characterised by the driving or driven means to or from their working members
- F04B9/08—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid
- F04B9/12—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air
- F04B9/129—Piston machines or pumps characterised by the driving or driven means to or from their working members the means being fluid the fluid being elastic, e.g. steam or air having plural pumping chambers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B49/00—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00
- F04B49/22—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves
- F04B49/225—Control, e.g. of pump delivery, or pump pressure of, or safety measures for, machines, pumps, or pumping installations, not otherwise provided for, or of interest apart from, groups F04B1/00 - F04B47/00 by means of valves with throttling valves or valves varying the pump inlet opening or the outlet opening
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/10—Valves; Arrangement of valves
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F04—POSITIVE - DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
- F04B—POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS
- F04B53/00—Component parts, details or accessories not provided for in, or of interest apart from, groups F04B1/00 - F04B23/00 or F04B39/00 - F04B47/00
- F04B53/14—Pistons, piston-rods or piston-rod connections
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Reciprocating Pumps (AREA)
Abstract
The present invention relates to a kind of pneumatic type double-acting pumps,Pump main body is set to be separated into two rooms with three partition boards,And the first partition between two rooms is made to be equipped with a piston rod,And first piston set by piston rod both ends and second piston is made to distinguish position in two rooms,Entrance set by the first partition is set sequentially to be connected with a switching valve and air flow valve with pipeline again,And the other end each group for making two rooms connect with first partition is connected to second partition and third partition board,And the second partition and its entrance of third partition board and exit is made respectively to be connected with working line,Whereby,Switched using the valve position of switching valve,The piston that can be driven two rooms is held fluid inside pressurization output,In addition,Piston feed speed is then can control by air flow valve,Accordingly,Reach the fluid output once by least two different zones,And activity adjustment fluid conveying frequency and flow velocity and other effects.
Description
Technical field
The present invention relates to a kind of pneumatic type double-acting pump, it is espespecially a kind of can be once defeated by the fluid of at least two different zones
Go out, and can pneumatic type double-acting pump that is easy and accurately carrying out the adjustings such as fluid conveying frequency and flow velocity.
Background technology
Existing pump is mainly made of body, motor and blade etc., is motor being installed on body side, and motor is made to connect
Drive shaft penetrate in body, to be connected with group with the blade in body.It can be by fluid by body one when motor start
Side entrance drains in body, and pressurizes by means of blade movement, and fluid is exported by body and is exported, according to this, defeated to improve fluid
Pressurization pressure, and fluid is pushed from lower toward eminence.
And the fluid thrust of existing pump is to be pressurizeed to fluid caused by motor band movable vane piece generates centrifugal force in order to obtain
Required centrifugal force, therefore, motor rotary speed must maintain high rotating speed；However, the motor that runs at high speed not only consumes energy and component is caused to grind
Consumption separately can also make pump internal temperature increase damage fluid mass, if motor rotary speed to be reduced pumps spoilage and to fluid to slow down
Damage, it has been found that low-speed running motor can not generate push centrifugal force of fluid with movable vane piece, and lose pumping function.Therefore, existing
Pump is only suitable for quickly conveying and to conveying the relatively low fluid of quality requirement, and can not be applicable in the thick property fluid that must be adopted and convey at a slow speed
Deng, and existing pump is once also only capable of being applicable in single fluid conveying, without having the fluid conveying and other effects of two kinds of area above.
Therefore, the present inventor is borrowing it for many years in related field in view of existing pump in still having above-mentioned missing using upper
Manufacture and design experiences and knowledge assist, and through multi-party clever thought, research and create the present invention.
Invention content
The present invention relates to a kind of pneumatic type double-acting pumps, can be once by least two differences its purpose is to provide one kind
The fluid in region exports, and can pneumatic type double-acting pump that is easy and accurately carrying out the adjustings such as fluid conveying frequency and flow velocity.
In order to reach above-mentioned implementation purpose, the present inventor is discussing and formulating following pneumatic type double-acting pump, is equipped with a hollow pump master
Body, the pump main body are separated to form at least two rooms by least three partition boards, and three partition boards for separating two rooms respectively constitute two
The end walls of the room, the partition board between two rooms is equipped with a perforation in its centre, and is worn in the perforation
Equipped with a piston rod, the both ends of the piston rod are respectively connected with a piston, and two pistons distinguish position in two rooms, and two
The room respectively in secondly formed at end wall an at least entrance and at least one outlet, and make the entrance and outlet through its molding
The partition board.
Pneumatic type double-acting pump as described above, wherein three partition boards are defined as first partition, second partition and third
Partition board, two rooms are defined as the first room and the second room, and the partition board between first room and the second room is
First partition, and first room and second room one end is made to connect with the first partition, and make first room and the second appearance
In the opposite other end to connect with the first partition, group is connected to the second partition and third partition board respectively for room, the first partition up to
Two entrances, the end of first room and the second room that two entrances are constituted through the first partition are formed less
Wall, to be communicated respectively with first room and the second room, on the second partition and third partition board it is each at least form one this enter
Mouthful, the entrance on the second partition and third partition board extends through first room that the second partition and third partition board are constituted
And second room end wall, and communicated with first room and the second room, which is molded in its opposite inlet side
Have the outlet, the end wall for first room that the outlet of the second partition is constituted through the second partition, and with this first
Room communicates, which forms the outlet in its opposite inlet side, and so that the outlet of the third partition board is run through should
The end wall for second room that third partition board is constituted, and communicated with second room.
Pneumatic type double-acting pump as described above, wherein the pneumatic type double-acting pump further includes multiple working lines, should
The entrance and outlet of second partition and third partition board are respectively connected with the working line, and a check is equipped in the working line
Valve.
Pneumatic type double-acting pump as described above, wherein the pneumatic type double-acting pump further includes a switching valve, this first
Two entrances of partition board are connected with a pipeline with the switching valve respectively.
Pneumatic type double-acting pump as described above, wherein the pneumatic type double-acting pump further includes an air flow valve, should
Switching valve is connected with a pipeline with the air flow valve.
Pneumatic type double-acting pump as described above, wherein the switching valve is two-position four way change valve.
Whereby, pneumatic type double-acting pump of the invention utilizes the valve bit map of switching valve, can drive the piston of each room will
It holds fluid inside pressurization output, to reach the once fluid output effect by least two different zones, is cut further through adjusting
Change each valve position switching frequency of valve, you can it is simple accurately to reach fluid output frequency effect in each room of control, in addition, passing through sky
Throughput valve then can control pressure-air output flow, and then control piston feed speed, reaches easy and precisely adjusts fluid
Transport Stream effect.
Description of the drawings
The following drawings are only intended to schematically illustrate and explain the present invention, not delimit the scope of the invention.Wherein：
Fig. 1：The sectional view of the present invention；
Fig. 2：The usage state diagram of the present invention
Accompanying drawings symbol description：
1 pump main body
11 first rooms
12 second rooms
2 partition boards
21 first partitions
211 perforation
212 leak-proof gaskets
213 entrances
214 entrances
22 second partitions
221 entrances
222 outlets
23 third partition boards
231 entrances
232 outlets
3 piston rods
31 first pistons
32 second pistons
33 leak-proof gaskets
4 switching valves
5 air flow valves
6 working lines
61 non-return valves
Specific implementation mode
For the effect that makes the technological means of the present invention and its can reach, can have more complete and clearly disclose, now in detail
It is carefully described as follows, also referring to the attached drawing and figure number of exposure：
First, refering to Figure 1, for pneumatic type double-acting pump of the invention, it is equipped with a hollow pump main body 1, and make this
Hollow pump main body 1 is separated at least two rooms by least three partition boards 2, and three partition boards 2 for separating two rooms is made to respectively constitute this
The end walls of two rooms, it is first partition 21, second partition 22 and third partition board 23 that the present invention, which defines three partition board 2, it is another this two
Room is defined as the first room 11 and the second room 12, and makes the partition board 2 between first room 11 and the second room 12 be
First partition 21, and first room and second room one end is made to connect with the first partition, and make first room 11 and
In the opposite other end to connect with the first partition 21, group is connected to the second partition 22 and third partition board 23 to two rooms 12 respectively, again
So that the centre of the first partition 21 is equipped with a perforation 211, and a piston rod 3 is equipped in the perforation 211, separately makes the piston rod
3 both ends are connected separately with a first piston 31 and a second piston 32, and the first piston 31 and second piston 32 is made to distinguish
Position in first room 11 and the second room 12, first room 11 and the second room 12 by first partition 21, second every
The end walls distance that plate 22 and third partition board 23 are constituted, the as first piston 31 and the actuating travel of second piston 32, and make
The first piston 31 and 32 peripheral wall each group of second piston are connected to an at least leak-proof gasket 33, so that the first piston 31 and second is lived
Plug 32 is in contact by leak-proof gasket 33 with the locular wall of first room 11 and the second room 12, separately in the first partition 21
The hole wall of perforation 211 also organize and be equipped with an at least leak-proof gasket 212 so that the leakproof of the hole wall of the piston rod 3 and the perforation 211
Washer 212 is in contact, and 21 side of first partition is made to form two entrances 213,214, and so that the one entrance 213 is run through should
11 end wall of the first room that first partition 21 is constituted, and communicates with first room 11, another entrance 214 through this first every
12 end wall of the second room that plate 21 is constituted, and communicates with second room 12, but make two entrances 213,214 respectively with a pipeline with
One switching valve 4 is connected, which can be two-position four way change valve, separately make the switching valve 4 with pipeline and an air flow valve
5 are connected, and the second partition 22 and third partition board 23 is made respectively to form an entrance 221,231 and one outlet at its both sides
222,232, and the first room 11 for making the entrance 221 of the second partition 22 and outlet 222 be constituted through the second partition 22
End wall, and communicated with first room 11, so that the entrance 231 of the third partition board 23 and outlet 232 is run through the third partition board 23
12 end wall of the second room constituted, and being communicated with second room 12, and make entering for the second partition 22 and third partition board 23
Mouthfuls 221,231 and outlet 222,232 be respectively connected with a working line 6, and in being respectively provided with a non-return valve 61 in the working line 6,
Non-return valve 61 in the working line 6 of the entrance 221,231 of the second partition 22 and third partition board 23 connection can prevent fluid from noting
Countercurrently go out after entering first room 11 and the second room 12, the outlet 222,232 of the another second partition 22 and third partition board 23
After non-return valve 61 in the working line 6 of connection can then prevent fluid from being exported by first room 11 and the second room 12, adverse current
Return the first room 11 and the second room 12.
Accordingly, when using implementing, the air flow valve 5 is made to be connected with an air compressor with pipeline, and this is made to cut
Valve 4 and air flow valve 5 to be changed mutually to couple with a control unit, the valve position to control the switching valve 4 by the control unit switches, with
And 5 delivery air flow-rate adjustment of air flow valve etc..When by first fluid by entrance 221 of the working line 6 through second partition 22
When inputting the first room 11, second fluid is also made to inject the second room 12 by entrance 231 of the working line 6 through third partition board 23
In, and by setting non-return valve 61 in working line 6, prevent from injecting first room 11 and fluid countercurrent current in the second room 12 and
Go out.
In this, shown in Fig. 2, when being intended to export the first fluid pressurization in the first room 11, by controlling
Unit drives 4 start of switching valve, switching valve 4 is adjusted to the first valve position, at this point, by air compressor through air flow valve
The pressure-air of 5 outputs the one entrance 213 through first partition 21 can enter under the hole position guiding of the first valve position of switching valve 4
In first room 11, and the first piston 31 in the first room 11 is pushed toward 22 direction of second partition, and makes injection the
First fluid in one room 11 exports 222 through connection under 31 squeezing action of first piston, by second partition 22 is set
The pressurization output of working line 6, and using setting non-return valve 61 in the working line 6, it is defeated by the outlet 222 of second partition 22 to prevent
The fluid gone out is reversely flowd back towards again in the first room 11.Separately when being intended to export the second fluid pressurization in the second room 12, then by controlling
Unit processed drives switching valve 4 to adjust to the second valve position, so that pressure-air is in the hole position guiding of the second valve position of the switching valve 4
Under, another entrance 214 through first partition 21 enters in the second room 11, and the second piston 32 in second room 12 is past
23 direction of third partition board pushes, so as to the second fluid in the second room 12 be injected under the second piston 32 extruding, by third
Working line 6 pressurization output of the outlet 232 of partition board 23 through connection, and using set non-return valve 61 in the working line 6, prevent
The fluid exported by the outlet 232 of third partition board 23 is reversely flowd back towards again in the second room 12.
According to this, pneumatic type double-acting pump design through the invention, you can once at least to first fluid and second fluid etc.
Two kinds of different fluids are conveyed, and the fluid output operation of at least two different zones is provided with profit, another of the invention by instrumentation tubes
Road 6 is different from second partition 22 and 222,232,221,231 progress of entry and exit of third partition board 23 with postponing, and can generate difference
The outlet 222 of second partition 22 is such as connected with the entrance 231 of third partition board 23 with 6 phase of working line by task performance, separately by
The outlet 232 of three partition boards 23 is connected with the entrance 221 of second partition 22 with 6 phase of working line, in this way, can reach make fluid in
12 reciprocal reflowing result of first room 11 and the second room, furthermore, the present invention is by controlling switching valve 4 in the first valve position and second
Valve position switching frequency, you can adjustment first piston 31 and second piston 32 add the fluid in the first room 11 and the second room 12
Frequency of delivery is pressed, separately then can control pressure-air output flow using air flow valve 5, and then adjust first piston 31 and second
32 feed speed speed of piston, whereby, to reach easy and accurate adjustment fluid conveying frequency and flow velocity and other effects, to be applicable in not
Needed for the conveyings such as density fluid, especially when by the present invention pneumatic type double-acting pump be implemented on fluid in pipeline liquid injecting device or cavity
When exchange, by making the first room 11 and the second room 12 in tool same volume space, and is driven with same piston rod 3 and to be located at the
One room 11 and the first piston 31 in the second room 12 and 32 start of second piston design, you can ensure the pneumatic type of the present invention
When the first room 11 and the second room 12 of double-acting pump are extracted and are conveyed to the fluid in the pipeline liquid injecting device or cavity respectively
Flow, flow velocity and pressure etc. keep impartial, and will not occur to extract uneven with feed flow, flow velocity and pressure, and keep this close
The situations such as negative pressure are generated in stopped pipe road or cavity, accordingly, make fluid communication operation in the offer pipeline liquid injecting device or cavity it is accurate,
Safety.
By above structure and embodiment it is found that the invention has the advantages that：
1. the pneumatic type double-acting pump of the present invention is equipped at least two rooms, and is provided with piston in each room, and makes each appearance
The piston coaxial of room connects, and whereby, utilizes the valve bit map of switching valve, you can the piston of each room is driven to be held fluid inside
Pressurization output, in this, you can reach the fluid output equivalent fruit once by least two different zones.
2. the pneumatic type double-acting pump of the present invention makes two rooms drive two in tool same volume space, and by same piston rod
Room inner carrier start, in this, when the present invention is implemented on to fluid communication in pipeline liquid injecting device or cavity, you can ensure that this is closed
Flow, flow velocity and pressure of fluid extraction and conveying in pipeline or cavity etc. keep impartial, are not the pipeline liquid injecting device or chamber
The situations such as negative pressure are generated in vivo, accordingly, to provide fluid communication job safety accuracy in pipeline liquid injecting device or cavity.
3. the pneumatic type double-acting pump of the present invention passes through each valve position switching frequency of adjusting switching valve, you can reach simple accurate
Fluid output frequency effect in room is controlled, in addition, then can control pressure-air output flow by air flow valve, and then is controlled
Piston feed speed processed reaches with simplicity and precisely adjustment fluid conveying flow velocity effect, according to this, each to be applicable in different densities etc.
Needed for formula fluid conveying.
4. the pneumatic type double-acting pump of the present invention can effectively avoid generates high temperature in the room of the injection of offer fluid and output,
According to this, to prevent improper high temperature from damaging fluid mass, and make to present invention can be suitably applied to conveying the higher stream of quality requirement
The conveying operation of body.
The foregoing is merely the schematical specific implementation modes of the present invention, are not limited to the scope of the present invention.It is any
Those skilled in the art, made equivalent variations and modification under the premise of not departing from design and the principle of the present invention,
The scope of protection of the invention should be belonged to.And it should be noted that each component part of the present invention is not limited in above-mentioned entirety
Using one can be selected individually to use according to actual needs for each technical characteristic described in specification of the invention or selection is more
Item combines use, and therefore, the present invention covers in the nature of things related with this case inventive point other to be combined and specifically answer
With.
Claims (6)
1. a kind of pneumatic type double-acting pump, which is characterized in that the pneumatic type double-acting pump be equipped with a hollow pump main body, the pump main body by
At least three partition boards are separated to form at least two rooms, and three partition boards for separating two rooms respectively constitute two room
End walls, the partition board between two room is equipped with a perforation in its centre, and a piston rod is equipped in the perforation,
The both ends of the piston rod are respectively connected with a piston, and two pistons distinguish positions in two rooms, two rooms respectively in
An at least entrance and at least one outlet are formed at its end walls, and the entrance and outlet run through its molding described partition board.
2. pneumatic type double-acting pump as described in claim 1, which is characterized in that three partition boards are defined as first partition,
Two partition boards and third partition board, two rooms are defined as the first room and the second room, and hold positioned at first room and second
Partition board between room is first partition, and first room and second room one end is made to connect with the first partition, but make this first
Group is connected to the second partition and third partition board respectively in the opposite other end to connect with the first partition for room and the second room, should
At least form two entrances in first partition, first room that two entrances are constituted through the first partition and the
The end wall of two rooms, to be communicated respectively with first room and the second room, on the second partition and third partition board it is each at least at
Type has the entrance, and the entrance on the second partition and third partition board extends through the second partition and third partition board constituted
The end wall of first room and the second room, and communicated with first room and the second room, which enters in opposite its
Mouth side forms the outlet, and the outlet of the second partition runs through the end wall for first room that the second partition is constituted,
And communicated with first room, which forms the outlet in its opposite inlet side, and makes the third partition board
The end wall for second room that outlet is constituted through the third partition board, and communicated with second room.
3. pneumatic type double-acting pump as claimed in claim 2, which is characterized in that the pneumatic type double-acting pump further includes multiple
The entrance of working line, the second partition and third partition board and outlet are respectively connected with the working line, and in the working line
Equipped with a non-return valve.
4. pneumatic type double-acting pump as claimed in claim 2, which is characterized in that the pneumatic type double-acting pump further includes all
Valve is changed, two entrances of the first partition are connected with a pipeline with the switching valve respectively.
5. pneumatic type double-acting pump as claimed in claim 4, which is characterized in that the pneumatic type double-acting pump further includes
Throughput valve, the switching valve are connected with a pipeline with the air flow valve.
6. pneumatic type double-acting pump as claimed in claim 4, which is characterized in that the switching valve is two-position four way change valve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710255916.5A CN108730149A (en) | 2017-04-18 | 2017-04-18 | Pneumatic type double-acting pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710255916.5A CN108730149A (en) | 2017-04-18 | 2017-04-18 | Pneumatic type double-acting pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108730149A true CN108730149A (en) | 2018-11-02 |
Family
ID=63924270
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710255916.5A Pending CN108730149A (en) | 2017-04-18 | 2017-04-18 | Pneumatic type double-acting pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108730149A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030171A (en) * | 2019-03-22 | 2019-07-19 | 卫德义 | Booster pump |
| CN110327767A (en) * | 2019-07-15 | 2019-10-15 | 新疆金禾山能源科技有限公司 | A kind of denitrfying agent spraying system of flue gas denitrification equipment |
| CN110701015A (en) * | 2019-10-09 | 2020-01-17 | 潘显敏 | Pneumatic pumping small-sized concrete conveying pump |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3624227A1 (en) * | 1986-07-17 | 1988-01-28 | Timmer Pneumatik Gmbh | Pneumatic pump unit |
| CN1172239A (en) * | 1996-06-21 | 1998-02-04 | 张继科 | Refrigerant overcirculating vapour compression refrigerator system |
| CN2331772Y (en) * | 1997-12-10 | 1999-08-04 | 陈文忠 | All-pneumatic water pump |
| CN201225264Y (en) * | 2008-05-06 | 2009-04-22 | 武汉理工大学 | Clearance stepless adjusting device of piston reciprocating compressor |
| CN201818463U (en) * | 2010-07-15 | 2011-05-04 | 毅安有限公司 | Refrigerant compressing device |
| CN201991718U (en) * | 2011-02-25 | 2011-09-28 | 程云虹 | Through-shaft serial three-cylinder self-control gas-liquid pump |
-
2017
- 2017-04-18 CN CN201710255916.5A patent/CN108730149A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3624227A1 (en) * | 1986-07-17 | 1988-01-28 | Timmer Pneumatik Gmbh | Pneumatic pump unit |
| CN1172239A (en) * | 1996-06-21 | 1998-02-04 | 张继科 | Refrigerant overcirculating vapour compression refrigerator system |
| CN2331772Y (en) * | 1997-12-10 | 1999-08-04 | 陈文忠 | All-pneumatic water pump |
| CN201225264Y (en) * | 2008-05-06 | 2009-04-22 | 武汉理工大学 | Clearance stepless adjusting device of piston reciprocating compressor |
| CN201818463U (en) * | 2010-07-15 | 2011-05-04 | 毅安有限公司 | Refrigerant compressing device |
| CN201991718U (en) * | 2011-02-25 | 2011-09-28 | 程云虹 | Through-shaft serial three-cylinder self-control gas-liquid pump |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110030171A (en) * | 2019-03-22 | 2019-07-19 | 卫德义 | Booster pump |
| CN110327767A (en) * | 2019-07-15 | 2019-10-15 | 新疆金禾山能源科技有限公司 | A kind of denitrfying agent spraying system of flue gas denitrification equipment |
| CN110701015A (en) * | 2019-10-09 | 2020-01-17 | 潘显敏 | Pneumatic pumping small-sized concrete conveying pump |
| CN110701015B (en) * | 2019-10-09 | 2020-12-15 | 湖南慧盟重工科技有限公司 | Pneumatic pumping small-sized concrete conveying pump |
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Application publication date: 20181102 |