CN210484012U - Constant pressure pump - Google Patents
Constant pressure pump Download PDFInfo
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- CN210484012U CN210484012U CN201921570722.5U CN201921570722U CN210484012U CN 210484012 U CN210484012 U CN 210484012U CN 201921570722 U CN201921570722 U CN 201921570722U CN 210484012 U CN210484012 U CN 210484012U
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- pressure sensing
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Abstract
The utility model provides a constant pressure pump, it relates to pump technical field, concretely relates to constant pressure pump. The bottom end of the water pump is connected with the variable frequency motor, the water outlet end of the water pump is provided with a pressure sensing device, the pressure sensing device is connected with a controller, one end of the controller is connected with a power supply, and the other end of the controller is connected with the variable frequency motor; the pressure sensing device comprises an upper shell, a lower shell, an adjusting screw, a cushion block, a pressure sensing film and an elastic diaphragm, wherein the bottom of the upper shell is connected with the lower shell, the elastic diaphragm is arranged on the inner side of the lower shell, the pressure sensing film is arranged at the upper end of the elastic diaphragm, the cushion block is arranged at the upper end of the pressure sensing film, the upper end of the cushion block is in contact with the adjusting screw, the adjusting screw is connected with the upper shell, and the pressure sensing film is connected with the controller. After the technical scheme is adopted, the utility model discloses beneficial effect does: the output rotating speed of the motor can be automatically adjusted according to different pressures, so that the booster pump with constant output pressure of the water pump is achieved, and the service life of the water inlet device is prolonged.
Description
Technical Field
The utility model relates to a pump technical field, concretely relates to constant pressure pump.
Background
Diaphragm pumps, also known as control pumps, are the main type of actuator that is operated by power to vary the fluid flow by receiving a control signal from a regulating control unit. The diaphragm pump is used in the control process to receive the control signal of the regulator or the computer and change the flow rate of the regulated medium to maintain the regulated parameters in the required range, so as to realize the automation of the production process. If the automatic adjustment system is compared to a manual adjustment process, the detection unit is the human eye and the adjustment control unit is the human brain, the execution units, the membrane pumps, are the human hand and foot.
At present, common water purifiers in the market are divided into a pipe pressure type (a water source is municipal tap water) and a self-suction type (no water inlet pressure or small water inlet pressure). The pipe pressure type water purifier is mostly used in places with municipal tap water in cities, while the self-absorption type water purifier is mostly used in rural areas, especially in backward areas without tap water in mountainous areas, or the requirement that the water pressure of the municipal tap water cannot be met due to poor tap water conditions. And as logistics develops, both models can be applied in opposite scenes by channel conflict. However, when the pipe-press type water purifier is used in areas without tap water or with low water pressure, water cannot be produced or the water production amount is seriously insufficient. When the self-priming water purifier is used under a municipal tap water source, the working pressure of the water purifier is ultrahigh, the water leakage of the whole water purifier is possibly bad, and the service life of an RO (reverse osmosis) membrane is influenced.
In most domestic buildings, secondary water supply is provided, water tanks are arranged on the floors, and water pipes are connected to each house at every moment, so that the difference of water pressure of different floors of the same building is large, and the phenomenon that the water purifier is used on different floors can cause the difference of water inlet pressure of the water purifier to be large, the pressure of the higher floor is insufficient, and the pressure of the lower floor is higher. And then make the water purifier when higher floor during operation, the flow is not enough, and system water inefficiency and power consumptive, and lower floor uses the water purifier can lead to operating pressure to be on the high side, influences water purifier life, and more serious probably leads to the too high bad phenomenon of leaking of complete machine pressure appearance.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to prior art's defect and not enough, provide a constant pressure pump, its stable in structure can carry out the regulation motor output speed by oneself according to different pressure, reaches the booster pump that water pump output pressure is invariable, prolongs the life of water intaking ware.
In order to achieve the above purpose, the utility model adopts the following technical scheme: the water pump comprises a water pump, a pressure sensing device, a controller and a power supply, wherein the bottom end of the water pump is connected with a variable frequency motor, the pressure sensing device is arranged at the water outlet end of the water pump and connected with the controller, one end of the controller is connected with the power supply, and the other end of the controller is connected with the variable frequency motor; the pressure sensing device comprises an upper shell, a lower shell, an adjusting screw, a cushion block, a pressure sensing film and an elastic diaphragm, wherein the bottom of the upper shell is connected with the lower shell, the elastic diaphragm is arranged on the inner side of the lower shell, the pressure sensing film is arranged at the upper end of the elastic diaphragm, the cushion block is arranged at the upper end of the pressure sensing film, the upper end of the cushion block is in contact with the adjusting screw, the adjusting screw is connected with the upper shell, and the pressure sensing film is connected with the controller.
Furthermore, the pressure sensing device is connected with the water outlet pipeline of the water pump in a split mode or is connected with the water inlet end of the water pump in an integrated mode.
Furthermore, the cushion block is made of hard materials.
Furthermore, the upper shell and the lower shell are in interference tight fit connection with the elastic diaphragm. The upper shell and the lower shell are in interference tight fit connection with the elastic diaphragm and can bear water pressure of more than 3.0 MPa.
Furthermore, the lower shell is connected with the water outlet end of the water pump.
The utility model discloses a theory of operation: the upper shell and the lower shell are in interference fit connection with the elastic diaphragm according to the position of the device, so that the device can bear high water pressure; the cushion is the stereoplasm material cushion, its hardness is higher, and is not fragile, the bottom and the contact of forced induction module of cushion, the pressure of forced induction module response water pump play water end, then give the controller with the pressure transmission who senses, the controller can be adjusted inverter motor rotational speed according to pressure-sensitive device's feedback signal, make the export pressure of water pump be in the default operation all the time, different pressure carry out the self-regulated inverter motor output rotational speed, reach water pump output pressure constancy.
After the technical scheme is adopted, the utility model discloses beneficial effect does: the water feeder has stable structure, can automatically adjust the output rotating speed of the motor according to different pressures, achieves a booster pump with constant output pressure of the water pump, and prolongs the service life of the water feeder.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
Fig. 1 is a schematic structural diagram of the present invention;
fig. 2 is a schematic structural diagram of the middle pressure sensing device 3 of the present invention.
Description of reference numerals: the device comprises a water pump 1, a variable frequency motor 2, a pressure sensing device 3, a controller 4, a power supply 5, an upper shell 31, a lower shell 32, an adjusting screw 33, a cushion block 34, a pressure sensing film 35 and an elastic diaphragm 36.
Detailed Description
Referring to fig. 1 to 2, the technical solution adopted by the present embodiment is: the water pump comprises a water pump 1, a variable frequency motor 2, a pressure sensing device 3, a controller 4 and a power supply 5, wherein the bottom end of the water pump 1 is connected with the variable frequency motor 2, the pressure sensing device 3 is arranged at the water outlet end of the water pump 1, the pressure sensing device 3 is connected with the controller 4, one end of the controller 4 is connected with the power supply 5, the other end of the controller 4 is connected with the variable frequency motor 2, and the controller 4 can regulate the rotating speed of the variable frequency motor 2 in a feedback manner through the pressure sensing device 3; the pressure sensing device 3 comprises an upper shell 31, a lower shell 32, an adjusting screw 33, a cushion block 34, a pressure sensing film 35 and an elastic diaphragm 36, wherein the bottom of the upper shell 31 is connected with the lower shell 32, the inner side of the lower shell 32 is provided with the elastic diaphragm 36, the upper end of the elastic diaphragm 36 is provided with the pressure sensing film 35, the cushion block 34 is arranged at the upper end of the pressure sensing film 35, the upper end of the cushion block 34 is in contact with the adjusting screw 33, the adjusting screw 33 is connected with the upper shell 31, and the pressure sensing film 35 is connected with the controller 4.
The pressure induction device 3 is connected with the water outlet pipeline of the water pump 1 in a split mode or is connected with the water inlet end of the water pump 1 in an integrated mode.
The cushion block 34 is a hard cushion block.
The upper shell 31 and the lower shell 32 are in interference fit connection with the elastic diaphragm 36. The upper shell 31 and the lower shell 32 are in interference tight fit connection with the elastic diaphragm and can bear water pressure of more than 3.0 MPa.
The lower shell 32 is connected with the water outlet end of the water pump 1.
The controller 4 can adjust the rotating speed of the variable frequency motor 2 according to the feedback signal of the pressure sensing device 3, so that the outlet pressure of the water pump 1 is always in a preset value to operate.
The utility model discloses a theory of operation: the upper shell 31 and the lower shell 32 are in interference tight fit connection with the elastic diaphragm according to the position of the device, and can bear the water pressure of more than 3.0 MPa; cushion 34 is the stereoplasm material cushion, its hardness is higher, and is not fragile, the bottom and the contact of forced induction module 35 of cushion 34, forced induction module 35 responds to the pressure of water pump 1 play water end, then give controller 4 with the pressure transmission who senses, controller 4 can adjust inverter motor 2 rotational speed according to pressure-sensitive device 3's feedback signal, make the export pressure of water pump 1 be in the default operation all the time, different pressure carry out the output speed of self-regulation inverter motor 2, reach water pump output pressure invariant.
After the technical scheme is adopted, the utility model discloses beneficial effect does: the water feeder has stable structure, can automatically adjust the output rotating speed of the motor according to different pressures, achieves a booster pump with constant output pressure of the water pump, and prolongs the service life of the water feeder.
The above description is only for the purpose of illustrating the technical solutions of the present invention and not for the purpose of limiting the same, and other modifications or equivalent replacements made by those of ordinary skill in the art to the technical solutions of the present invention should be covered within the scope of the claims of the present invention as long as they do not depart from the spirit and scope of the technical solutions of the present invention.
Claims (5)
1. A constant pressure pump characterized by: the water pump comprises a water pump (1), a variable frequency motor (2), a pressure sensing device (3), a controller (4) and a power supply (5), wherein the bottom end of the water pump (1) is connected with the variable frequency motor (2), the water outlet end of the water pump (1) is provided with the pressure sensing device (3), the pressure sensing device (3) is connected with the controller (4), one end of the controller (4) is connected with the power supply (5), and the other end of the controller (4) is connected with the variable frequency motor (2); the pressure sensing device (3) comprises an upper shell (31), a lower shell (32), an adjusting screw (33), a cushion block (34), a pressure sensing film (35) and an elastic film (36), wherein the bottom of the upper shell (31) is connected with the lower shell (32), the inner side of the lower shell (32) is provided with the elastic film (36), the upper end of the elastic film (36) is provided with the pressure sensing film (35), the upper end of the pressure sensing film (35) is provided with the cushion block (34), the upper end of the cushion block (34) is in contact with the adjusting screw (33), the adjusting screw (33) is connected with the upper shell (31), and the pressure sensing film (35) is connected with the controller (4).
2. The constant pressure pump according to claim 1, wherein: the pressure sensing device (3) is connected with the water outlet pipeline of the water pump (1) in a split mode or is connected with the water inlet end of the water pump (1) in an integrated mode.
3. The constant pressure pump according to claim 1, wherein: the cushion block (34) is made of hard materials.
4. The constant pressure pump according to claim 1, wherein: the upper shell (31) and the lower shell (32) are in interference tight fit connection with the elastic diaphragm (36).
5. The constant pressure pump according to claim 1, wherein: the lower shell (32) is connected with the water outlet end of the water pump (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921570722.5U CN210484012U (en) | 2019-09-20 | 2019-09-20 | Constant pressure pump |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921570722.5U CN210484012U (en) | 2019-09-20 | 2019-09-20 | Constant pressure pump |
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| Publication Number | Publication Date |
|---|---|
| CN210484012U true CN210484012U (en) | 2020-05-08 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921570722.5U Active CN210484012U (en) | 2019-09-20 | 2019-09-20 | Constant pressure pump |
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| Country | Link |
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| CN (1) | CN210484012U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112539162A (en) * | 2019-09-20 | 2021-03-23 | 佛山市沃联电气有限公司 | Constant pressure pump |
-
2019
- 2019-09-20 CN CN201921570722.5U patent/CN210484012U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112539162A (en) * | 2019-09-20 | 2021-03-23 | 佛山市沃联电气有限公司 | Constant pressure pump |
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