CN215370186U - Diaphragm pump is carried and is prevented taking out integrated unit - Google Patents
Diaphragm pump is carried and is prevented taking out integrated unit Download PDFInfo
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- CN215370186U CN215370186U CN202120755937.5U CN202120755937U CN215370186U CN 215370186 U CN215370186 U CN 215370186U CN 202120755937 U CN202120755937 U CN 202120755937U CN 215370186 U CN215370186 U CN 215370186U
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Abstract
The utility model discloses a diaphragm pump conveying reverse pumping integrated unit, which comprises: the diaphragm pump assembly is provided with a liquid inlet and a liquid outlet and is used for providing liquid power; the reversing valve assembly comprises a valve body, a reversing rod, a first reversing shaft sleeve and a second reversing shaft sleeve, wherein a first cavity and a second cavity are formed in the valve body, an intermediate cavity is connected between the two cavities and is in butt joint communication with a liquid inlet, the first reversing shaft sleeve is arranged in the first cavity, the second reversing shaft sleeve is arranged in the second cavity, a runner communicated with the liquid outlet is respectively formed in the first reversing shaft sleeve and the second reversing shaft sleeve, the reversing rod sequentially penetrates through the first reversing shaft sleeve, the first cavity, the intermediate cavity, the second cavity and the second reversing shaft sleeve, and a first sealing bulge and a second sealing bulge are formed in the reversing rod; and the electromagnet assembly is used for driving the reversing rod to switch between the first position and the second position.
Description
Technical Field
The utility model relates to the technical field of diaphragm pumps, in particular to a diaphragm pump conveying reverse pumping integrated unit.
Background
Diaphragm pumps generally have a diaphragm driven by a drive mechanism to reciprocate, creating a vacuum in the diaphragm chamber, and atmospheric pressure forces the liquid into the pump and out an outlet. The diaphragm pump is generally provided with two one-way valves at an inlet and an outlet, liquid can only flow in one direction, the liquid is sucked at the inlet and is discharged at the outlet. In some specific occasions, such as a urea supply pump in a selective catalytic conversion system SCR of a diesel engine, a reverse pumping function is required, so that after the engine is stopped, liquid in the urea pump and a pipeline is pumped back and cleaned, and urea crystallization is avoided, and the system is damaged. Therefore, there is a need to further optimize the structure of existing diaphragm pumps.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a diaphragm pump delivery and reverse pumping integrated unit, which increases the reverse pumping function of a diaphragm pump and is suitable for all occasions requiring forward delivery and reverse delivery of liquid.
In order to achieve the purpose, the utility model adopts the following technical scheme:
a diaphragm pump delivery suck-back integrated unit, comprising:
the diaphragm pump assembly is provided with a liquid inlet and a liquid outlet and is used for providing liquid power;
the reversing valve assembly comprises a valve body, a reversing rod, a first reversing shaft sleeve and a second reversing shaft sleeve, wherein a first cavity and a second cavity are arranged in the valve body, an intermediate cavity is connected between the two cavities and is in butt joint communication with the liquid inlet, the first reversing shaft sleeve is arranged in the first cavity, the second reversing shaft sleeve is arranged in the second cavity, and the first reversing shaft sleeve and the second reversing shaft sleeve are respectively provided with a flow passage communicated with the liquid outlet, the reversing rod sequentially passes through the first reversing shaft sleeve, the first cavity, the middle cavity, the second cavity and the second reversing shaft sleeve in a transverse mode, and is provided with a first sealing bulge and a second sealing bulge, when the reversing rod is positioned at the first position, the first sealing bulge is in contact sealing with the first reversing shaft sleeve, meanwhile, the second sealing bulge is in contact sealing with the middle cavity, so that the first cavity is communicated with the liquid inlet, and the second cavity is communicated with the liquid outlet; when the reversing rod is positioned at the second position, the first sealing bulge is in contact sealing with the middle cavity, and the second sealing bulge is in contact sealing with the second reversing shaft sleeve at the same time, so that the first cavity is communicated with the liquid outlet, the second cavity is communicated with the liquid inlet, a first valve port communicated with the first cavity and a second valve port communicated with the second cavity are formed in the surface of the valve body, and the first valve port and the second valve port can alternately feed liquid or discharge liquid;
and the electromagnet assembly is used for driving the reversing rod to switch between the first position and the second position.
The diaphragm pump assembly comprises a sucker, a partition plate, a pressing plate and a diaphragm, the sucker is arranged on one side of the partition plate and forms a vacuum cavity with the sucker, the pressing plate is arranged on the other side of the partition plate, a liquid inlet and a liquid outlet are arranged on the pressing plate, a first sealing edge is arranged on the pressing plate corresponding to the liquid inlet, a second sealing edge is arranged on the partition plate opposite to the liquid outlet, the diaphragm is driven by a motor to reciprocate between the pressing plate and the partition plate, and the diaphragm is alternately in contact with the first sealing edge and the second sealing edge to form sealing due to pressure difference.
The electromagnet assembly is arranged at the first end of the reversing rod and provides an axial pushing force for the reversing rod, and the second end of the reversing rod is provided with a return spring.
The first reversing shaft sleeve is arranged on the first end of the reversing rod, the second reversing shaft sleeve is arranged on the second end of the reversing rod, and the second end of the reversing rod extends out of the first reversing shaft sleeve.
The motor adopts an outer rotor direct current brushless motor and integrates a crank link mechanism, and the crank link mechanism is connected with the diaphragm.
Wherein the diaphragm is any one of a disc valve, a ball valve and a reed valve.
Wherein, be provided with pressure sensor on the valve body, pressure sensor is used for detecting the runner internal pressure.
The bottom of the valve body is provided with a liquid outlet communicated with the flow channel, an anti-freezing diaphragm is arranged on the liquid outlet, and the anti-freezing diaphragm is made of compressible rubber and used for releasing the volume of the frozen and expanded liquid.
Wherein, the contact surface of the diaphragm pump assembly and the reversing valve assembly is provided with a sealing ring for strengthening the sealing of the liquid inlet and the liquid outlet.
In conclusion, compared with the prior art, the diaphragm pump conveying and back-pumping integrated unit has the advantages that the diaphragm pump is combined with the two-position four-way reversing valve, so that forward conveying and reverse conveying functions are simply realized, the back-pumping requirement of the diaphragm pump is met, the pipeline cleaning in application occasions is facilitated, the structure is compact, the cost is low, and the performance is reliable.
Drawings
FIG. 1 is a structural outline view of a diaphragm pump delivery and back-suction integrated unit provided by an embodiment of the utility model;
fig. 2 is an exploded view of a diaphragm pump delivery and back-pumping integrated unit provided by an embodiment of the present invention;
fig. 3 is an exploded view of a diaphragm pump assembly in a diaphragm pump delivery/reverse pumping integrated unit according to an embodiment of the present invention;
FIG. 4 is a cross-sectional view of a diaphragm pump assembly in a diaphragm pump delivery/reverse pumping integrated unit provided by an embodiment of the present invention;
fig. 5 is a cross-sectional view of a reversing valve assembly in a diaphragm pump delivery/back-suction integrated unit provided by an embodiment of the present invention.
Detailed Description
The technical scheme of the utility model is further explained by the specific implementation mode in combination with the attached drawings.
Referring to fig. 1 to 5, the present embodiment provides a diaphragm pump delivery and back pumping integrated unit, which includes a diaphragm pump assembly 100, a reversing valve assembly 200 and an electromagnet assembly 300.
The diaphragm pump assembly 100 is provided with a liquid inlet 101 and a liquid outlet 102 for providing hydrodynamic force. The vacuum sealing device specifically comprises a suction cup 103, a partition plate 104, a pressure plate 105 and a diaphragm 106, wherein the suction cup 103 is arranged on one side of the partition plate 104 and forms a vacuum cavity 107 with the partition plate 104, the pressure plate 105 is arranged on the other side of the partition plate 104, a liquid inlet 101 and a liquid outlet 102 are arranged on the pressure plate 105, a first sealing edge 108 is arranged on the pressure plate 105 corresponding to the liquid inlet 101, a second sealing edge 109 is arranged on the partition plate 104 opposite to the liquid outlet 102, the diaphragm 106 is driven by a motor 110 to reciprocate between the pressure plate 105 and the partition plate 104, and the diaphragm 106 is alternately contacted with the first sealing edge 108 and the second sealing edge 109 to form sealing through pressure difference. The diaphragm pump assembly 100 and the reversing valve assembly 200 are provided with sealing rings 111 on their contact surfaces to enhance the sealing of the liquid inlet 101 and the liquid outlet 102.
The motor 110 is an external rotor brushless dc motor and is integrated with a crank link mechanism, which is connected to the diaphragm 106, or other types of motors 110 that drive the crank link mechanism to move and reciprocate up and down using electromagnetic force as driving force.
The diaphragm 106 may be used in the form of a flap valve, a ball valve, a reed valve, or the like.
The diaphragm pump assembly 100 may be any other type of pump assembly, such as a plunger pump, a vane pump, a screw pump, a rotor pump, a peristaltic pump, an electromagnetic plunger pump, etc.
The reversing valve assembly 200 includes a valve body 201, a reversing lever 202, a first reversing hub 203, and a second reversing hub 204. A first cavity 205 and a second cavity 206 are formed in the valve body 201, an intermediate cavity 207 is connected between the two cavities, the intermediate cavity 207 is in butt joint communication with the liquid inlet 101, the first reversing shaft sleeve 203 is arranged in the first cavity 205, the second reversing shaft sleeve 204 is arranged in the second cavity 206, a flow passage 210 communicated with the liquid outlet 102 is respectively formed in the first reversing shaft sleeve 203 and the second reversing shaft sleeve 204, the reversing rod 202 sequentially penetrates through the first reversing shaft sleeve 203, the first cavity 205, the intermediate cavity 207, the second cavity 206 and the second reversing shaft sleeve 204, and a first sealing protrusion 208 and a second sealing protrusion 209 are arranged on the reversing rod 202.
When the reversing lever 202 is in the first position, the first sealing protrusion 208 is in contact with the first reversing shaft sleeve 203 for sealing, and the second sealing protrusion 209 is in contact with the intermediate cavity 207 for sealing, so that the first chamber 205 is communicated with the liquid inlet 101, and the second chamber 206 is communicated with the liquid outlet 102.
When the reversing lever 202 is in the second position, the first sealing protrusion 208 is in contact with the intermediate cavity 207 and the second sealing protrusion 209 is in contact with the second reversing collar 204, so that the first chamber 205 is communicated with the liquid outlet 102 and the second chamber 206 is communicated with the liquid inlet 101.
The surface of the valve body 201 is provided with a first valve port 211 communicated with the first chamber 205 and a second valve port 212 communicated with the second chamber 206, so that the first valve port 211 and the second valve port 212 alternately feed or discharge liquid.
The diverter valve assembly 200 is illustrated herein as a two-position, four-way valve configuration, and the deformation can be extended based thereon.
The valve body 201 is provided with a pressure sensor 213, and the pressure sensor 213 detects the pressure in the flow path 210.
The bottom of the valve body 201 is provided with a liquid outlet 214 communicated with the flow channel 210, the liquid outlet 214 is provided with an anti-freezing membrane 215, and the anti-freezing membrane 215 is made of compressible rubber and used for releasing the volume of frozen and expanded liquid and avoiding damage of components.
The electromagnet assembly 300 is used for driving the reversing lever 202 to switch between the first position and the second position. Specifically, the electromagnet assembly 300 is disposed at a first end of the reversing rod 202 to provide an axial pushing force for the reversing rod 202, the second end of the reversing rod 202 is disposed with a return spring 216, the return spring 216 is disposed in the second reversing axle sleeve 204, the first end of the reversing rod 202 extends out of the first reversing axle sleeve 203, and a reversing diaphragm 217 for maintaining sealing is disposed at a rod end.
When the electromagnet assembly 300 is not electrified, the reversing rod 202 is acted by the return spring 216 to be in the first position, and liquid enters from the first valve port 211 and exits from the second valve port 212, so that the liquid is conveyed in the forward direction.
When the electromagnet assembly 300 is powered on, the reversing lever 202 is pushed to overcome the spring force to reach the second position, and liquid enters from the second valve port 212 and exits from the first valve port 211, so that reverse liquid conveying is realized.
In conclusion, the diaphragm pump conveying and back-pumping integrated unit combines the diaphragm pump with the two-position four-way reversing valve, so that the forward conveying and reverse conveying functions are simply realized, the back-pumping requirement of the diaphragm pump is met, the pipeline cleaning in the application occasion is convenient, the structure is compact, the cost is low, and the performance is reliable.
The foregoing embodiments are merely illustrative of the principles and features of this invention, which is not limited to the above-described embodiments, but is capable of various modifications and changes without departing from the spirit and scope of the utility model, which are intended to be within the scope of the appended claims. The scope of the utility model is defined by the appended claims and equivalents thereof.
Claims (9)
1. A diaphragm pump conveying back pumping integrated unit is characterized by comprising
The diaphragm pump assembly is provided with a liquid inlet and a liquid outlet and is used for providing liquid power;
the reversing valve assembly comprises a valve body, a reversing rod, a first reversing shaft sleeve and a second reversing shaft sleeve, wherein a first cavity and a second cavity are formed in the valve body, an intermediate cavity is connected between the two cavities and is in butt joint communication with the liquid inlet, the first reversing shaft sleeve is arranged in the first cavity, the second reversing shaft sleeve is arranged in the second cavity, a runner communicated with the liquid outlet is respectively formed in the first reversing shaft sleeve and the second reversing shaft sleeve, the reversing rod sequentially crosses the first reversing shaft sleeve, the first cavity, the intermediate cavity, the second cavity and the second reversing shaft sleeve, a first sealing bulge and a second sealing bulge are arranged on the reversing rod, when the reversing rod is located at a first position, the first sealing bulge is in contact sealing with the first reversing shaft sleeve, and the second sealing bulge is in contact sealing with the intermediate cavity to enable the first cavity to be communicated with the liquid inlet, the second chamber is communicated with the liquid outlet; when the reversing rod is positioned at the second position, the first sealing bulge is in contact sealing with the middle cavity, and the second sealing bulge is in contact sealing with the second reversing shaft sleeve at the same time, so that the first cavity is communicated with the liquid outlet, the second cavity is communicated with the liquid inlet, a first valve port communicated with the first cavity and a second valve port communicated with the second cavity are formed in the surface of the valve body, and the first valve port and the second valve port can alternately feed liquid or discharge liquid;
and the electromagnet assembly is used for driving the reversing rod to switch between the first position and the second position.
2. A diaphragm pump delivery suck-back integrated unit according to claim 1, wherein: the diaphragm pump assembly comprises a sucker, a partition plate, a pressing plate and a diaphragm, wherein the sucker is arranged on one side of the partition plate and forms a vacuum cavity with the partition plate, the pressing plate is arranged on the other side of the partition plate, the liquid inlet and the liquid outlet are arranged on the pressing plate, a first sealing edge is arranged on the pressing plate corresponding to the liquid inlet, a second sealing edge is arranged on the partition plate opposite to the liquid outlet, the diaphragm is driven by a motor to reciprocate between the pressing plate and the partition plate, and the diaphragm is alternately sealed by the first sealing edge and the second sealing edge due to pressure difference.
3. A diaphragm pump delivery suck-back integrated unit according to claim 2, wherein: the electromagnet assembly is arranged at the first end of the reversing rod and provides an axial pushing force for the reversing rod, and a reset spring is arranged at the second end of the reversing rod.
4. A diaphragm pump delivery suck-back integrated unit according to claim 3, wherein: the reset spring is arranged in the second reversing shaft sleeve, the first end of the reversing rod extends out of the first reversing shaft sleeve, and the rod end of the reversing rod is provided with a reversing diaphragm used for keeping sealing.
5. A diaphragm pump delivery suck-back integrated unit according to claim 2, wherein: the motor adopts an outer rotor direct current brushless motor and integrates a crank connecting rod mechanism, and the crank connecting rod mechanism is connected with the diaphragm.
6. A diaphragm pump delivery suck-back integrated unit according to claim 2, wherein: the diaphragm is any one of a disc valve, a ball valve and a reed valve.
7. A diaphragm pump delivery suck-back integrated unit according to claim 1, wherein: the valve body is provided with a pressure sensor, and the pressure sensor is used for detecting the pressure in the flow channel.
8. A diaphragm pump delivery suck-back integrated unit according to claim 1, wherein: the bottom of the valve body is provided with a liquid outlet communicated with the flow channel, an anti-freezing diaphragm is arranged on the liquid outlet, and the anti-freezing diaphragm is made of compressible rubber and used for releasing the volume of frozen and expanded liquid.
9. A diaphragm pump delivery suck-back integrated unit according to claim 1, wherein: and a sealing ring for reinforcing the sealing of the liquid inlet and the liquid outlet is arranged on the contact surface of the diaphragm pump assembly and the reversing valve assembly.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120755937.5U CN215370186U (en) | 2021-04-13 | 2021-04-13 | Diaphragm pump is carried and is prevented taking out integrated unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120755937.5U CN215370186U (en) | 2021-04-13 | 2021-04-13 | Diaphragm pump is carried and is prevented taking out integrated unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215370186U true CN215370186U (en) | 2021-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120755937.5U Active CN215370186U (en) | 2021-04-13 | 2021-04-13 | Diaphragm pump is carried and is prevented taking out integrated unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215370186U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112943586A (en) * | 2021-04-13 | 2021-06-11 | 凯龙高科技股份有限公司 | Diaphragm pump is carried and is prevented taking out integrated unit |
-
2021
- 2021-04-13 CN CN202120755937.5U patent/CN215370186U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112943586A (en) * | 2021-04-13 | 2021-06-11 | 凯龙高科技股份有限公司 | Diaphragm pump is carried and is prevented taking out integrated unit |
| CN112943586B (en) * | 2021-04-13 | 2024-06-21 | 凯龙高科技股份有限公司 | Diaphragm pump conveying back-pumping integrated unit |
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