CN201535238U - Pump head of positive displacement pump - Google Patents
Pump head of positive displacement pump Download PDFInfo
- Publication number
- CN201535238U CN201535238U CN2009202574240U CN200920257424U CN201535238U CN 201535238 U CN201535238 U CN 201535238U CN 2009202574240 U CN2009202574240 U CN 2009202574240U CN 200920257424 U CN200920257424 U CN 200920257424U CN 201535238 U CN201535238 U CN 201535238U
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- CN
- China
- Prior art keywords
- pump
- pump core
- shell
- core
- outer shell
- 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.)
- Expired - Fee Related
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Abstract
The utility model discloses a pump head of a positive displacement pump which comprises an outer shell, a pump core, a pump gland and a membrane plate, wherein the outer shell is fixedly connected with the pump gland, the inner end of the outer shell is provided with a ring-shaped lug boss, the end surface of the pump core is provided with a ring-shaped groove, the ring-shaped groove is provided with a first sealing ring inside, one end of the ring-shaped lug boss of the outer shell is clamped in a ring-shaped groove of the pump core, the pump core divides the inner cavity of the outer shell into a water inlet cavity and a water outlet cavity, the ring-shaped lug boss is provided with a water discharge passage which is communicated with the water outlet cavity and extends out of the outer shell, the membrane plate is pressed between the pump core and the pump gland, a pump core water inlet hole and a pump core water outlet hole are arranged on the pump core, the pump core is connected with a first one-way valve and a second one-way valve, a valve plate of the first one-way valve is located in the water inlet cavity, a valve plate of the second one-way valve is located in the water outlet cavity, the outer shell is provided with a water inlet, the conjunction between the outer shell and the pump core is further provided with a second sealing ring, and the junction between the outer shell and the pump gland is further provided with a third sealing ring. The pump head has excellent sealing performance.
Description
Technical field
The utility model relates to a kind of pump head of positive displacement pump.
Background technique
The sealing of positive displacement pump at present mainly is that the pressured diaphragm that is contained between pump core and the pump pressure lid is realized, the elasticity of this diaphragm manufactured materials is relatively poor, the back is installed because the hydraulic pressure height of current is different, diaphragm is also along with the height of hydraulic pressure produces distortion, just be not easy to recover former state, this diaphragm is main sealed member, if this diaphragm produces distortion, the sealing effect of the pump head of whole positive displacement pump has just disappeared, therefore can only control the size of hydraulic pressure, it is too serious to allow diaphragm not be out of shape, otherwise just can't guarantee the sealing of whole positive displacement pump.
Summary of the invention
The purpose of this utility model is to provide a kind of pump head of positive displacement pump of good seal performance.
In order to achieve the above object, the technical solution of the utility model is: a kind of pump head of positive displacement pump, comprise shell, pump core, pump pressure lid and diaphragm, shell is fixedlyed connected with the pump pressure lid, shell the inner has annular protrusion, have on the end face of pump core and have first seal ring in annular groove and the annular groove, an end of the annular protrusion of shell is installed in the annular groove of pump core, and the pump core is divided into water-inlet cavity and water chamber to the inner chamber of shell; Has the exhalant canal that communicates with water chamber and stretch out shell on the annular protrusion, be pressed with diaphragm between pump core and the pump pressure lid, have pump core water inlet and pump core osculum on the pump core, be fitted with first one-way valve and second one-way valve on the pump core, and the valve block of first one-way valve is positioned at water-inlet cavity, and the valve block of second one-way valve is positioned at water chamber, has water intake on the shell, the joint of described shell and pump core also is provided with second seal ring, and the joint of shell and pump pressure lid also is provided with the 3rd seal ring.
Described shell and pump pressure lid are bolted to connection.
After adopting said structure, under the excessive situation of hydraulic pressure, when diaphragm deformation is serious, at two places crucial leakage place load two seal rings, if the excessive sealing effect that loses of diaphragm deformation, two seal rings also can produce seal action, thereby have guaranteed the sealability of positive displacement pump structure.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the A-A sectional view of Fig. 1;
Fig. 3 is the explosive view of Fig. 1.
Embodiment
The embodiment who provides below in conjunction with accompanying drawing is described in further detail the utility model.
Shown in Fig. 1,2,3,1, a kind of pump head of positive displacement pump, comprise shell 1, pump core 2, pump pressure lid 3 and diaphragm 4, shell 1 covers 3 with pump pressure fixedlys connected, shell 1 the inner has annular protrusion 1-3, have on the end face of pump core 2 and have first seal ring 7 in annular groove 2-1 and the annular groove 2-1, the end of the annular protrusion 1-3 of shell 1 is installed in the annular groove 2-1 of pump core 2, and pump core 2 is divided into water-inlet cavity 10 and water chamber 11 to the inner chamber of shell 1; Has the exhalant canal 1-3-1 that communicates with water chamber 11 and stretch out shell 1 on the annular protrusion 1-3, be pressed with diaphragm 4 between pump core 2 and the pump pressure lid 3, have pump core water inlet 2-2 and pump core osculum 2-3 on the pump core 2, be fitted with first one-way valve 8 and second one-way valve 9 on the pump core 2, and the valve block of first one-way valve 8 is positioned at water-inlet cavity 10, the valve block of second one-way valve 9 is positioned at water chamber 11, has water intake 1-1 on the shell 1, the joint of described shell 1 and pump core 2 also is provided with second seal ring 5, and the joint of shell 1 and pump pressure lid 3 also is provided with the 3rd seal ring 6.
Shown in Fig. 1,2, for mounted pump gland 3, described shell 1 and pump pressure lid 3 are bolted to connection.
When the utility model uses, driven by motor diaphragm 4 is flexible, liquid enters water-inlet cavity 10 from the water intake 1-1 of shell 1, liquid is washed first one-way valve 8 open, enter adapter cavity 12, wash second one-way valve 9 again open, by the pump core osculum 2-3 of pump core 2, enter water chamber 11, the exhalant canal 1-3-1 by shell 1 discharges then.Under the excessive situation of hydraulic pressure, when diaphragm 4 distortion are serious, since at two places crucial leakage place load second seal ring 5 and the 3rd seal ring 6, if the excessive sealing effect that loses of diaphragm 4 distortion, second seal ring 5 and the 3rd seal ring 6 also can produce seal action, thereby have guaranteed the sealability of positive displacement pump pump head structure.
Claims (2)
1. the pump head of a positive displacement pump, comprise shell (1), pump core (2), pump pressure lid (3) and diaphragm (4), shell (1) is fixedlyed connected with pump pressure lid (3), shell (1) the inner has annular protrusion (1-3), have on the end face of pump core (2) in annular groove (2-1) and the annular groove (2-1) and have first seal ring (7), one end of the annular protrusion (1-3) of shell (1) is installed in the annular groove (2-1) of pump core (2), and pump core (2) is divided into water-inlet cavity (10) and water chamber (11) to the inner chamber of shell (1); Have on the annular protrusion (1-3) and communicate with water chamber (11) and stretch out the exhalant canal (1-3-1) of shell (1), be pressed with diaphragm (4) between pump core (2) and the pump pressure lid (3), have pump core water inlet (2-2) and pump core osculum (2-3) on the pump core (2), be fitted with first one-way valve (8) and second one-way valve (9) on the pump core (2), and the valve block of first one-way valve (8) is positioned at water-inlet cavity (10), the valve block of second one-way valve (9) is positioned at water chamber (11), has water intake (1-1) on the shell (1), it is characterized in that: the joint of described shell (1) and pump core (2) also is provided with second seal ring (5), and the joint of shell (1) and pump pressure lid (3) also is provided with the 3rd seal ring (6).
2. the pump head of positive displacement pump according to claim 1 is characterized in that: described shell (1) and pump pressure lid (3) are bolted to connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202574240U CN201535238U (en) | 2009-11-06 | 2009-11-06 | Pump head of positive displacement pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009202574240U CN201535238U (en) | 2009-11-06 | 2009-11-06 | Pump head of positive displacement pump |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201535238U true CN201535238U (en) | 2010-07-28 |
Family
ID=42535017
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009202574240U Expired - Fee Related CN201535238U (en) | 2009-11-06 | 2009-11-06 | Pump head of positive displacement pump |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201535238U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094794A (en) * | 2011-02-11 | 2011-06-15 | 贾念国 | Diaphragm pump diaphragm with combined sealing structure and diaphragm pump |
| CN108119323A (en) * | 2018-02-06 | 2018-06-05 | 安徽仁智电子科技有限公司 | Plunger type metering pump |
| CN108194418A (en) * | 2018-02-28 | 2018-06-22 | 芜湖奇点新能源科技有限公司 | The rear cover of water pump and connection structure of outer shell, water pump and the automobile using the water pump |
| CN109838366A (en) * | 2019-01-25 | 2019-06-04 | 邹昌红 | A kind of diaphragm booster pump of belt switch and the adjustment structure of protection |
-
2009
- 2009-11-06 CN CN2009202574240U patent/CN201535238U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102094794A (en) * | 2011-02-11 | 2011-06-15 | 贾念国 | Diaphragm pump diaphragm with combined sealing structure and diaphragm pump |
| CN108119323A (en) * | 2018-02-06 | 2018-06-05 | 安徽仁智电子科技有限公司 | Plunger type metering pump |
| CN108194418A (en) * | 2018-02-28 | 2018-06-22 | 芜湖奇点新能源科技有限公司 | The rear cover of water pump and connection structure of outer shell, water pump and the automobile using the water pump |
| CN109838366A (en) * | 2019-01-25 | 2019-06-04 | 邹昌红 | A kind of diaphragm booster pump of belt switch and the adjustment structure of protection |
| CN109838366B (en) * | 2019-01-25 | 2024-04-12 | 邹昌红 | Diaphragm booster pump with switch and protective adjusting structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100728 Termination date: 20121106 |