CN211692958U - Pump head structure and frequency conversion self priming pump of using thereof - Google Patents
Pump head structure and frequency conversion self priming pump of using thereof Download PDFInfo
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- CN211692958U CN211692958U CN202020124705.5U CN202020124705U CN211692958U CN 211692958 U CN211692958 U CN 211692958U CN 202020124705 U CN202020124705 U CN 202020124705U CN 211692958 U CN211692958 U CN 211692958U
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Abstract
The utility model relates to a pump head structure and a variable frequency self-priming pump applied by the same, which comprises a pump head main body, and a water inlet cavity, an impeller cavity and a water outlet cavity which are arranged in the pump head main body and are sequentially communicated, wherein the pump head main body is provided with a water inlet communicated with the water inlet cavity, the pump head main body is provided with a water outlet communicated with the water outlet cavity, and the pump head main body is internally provided with a clapboard for dividing the water outlet cavity into a first cavity and a second cavity; the first chamber is communicated with the impeller cavity, the second chamber is communicated with the water outlet, the partition board is provided with a water through hole, and a one-way valve is arranged in the water through hole. This application separates the play water cavity through the baffle, only realizes the one-way circulation of first cavity to second cavity through the check valve, avoids the water backward flow in the second cavity to first cavity to avoid the water to flow back to the low-pressure area from the high-pressure area, consequently should to the flow of delivery port change condition repeatedly by a wide margin, can improve impeller operating stability, energy saving's loss to a certain extent.
Description
Technical Field
The utility model belongs to the technical field of the technique of self priming pump and specifically relates to a pump head structure and frequency conversion self priming pump of using thereof is related to.
Background
The shortage of water resources and energy resources is an important factor for restricting the economic development of China, and the water and energy conservation is the basic national policy for the sustainable development of the social economy of China. In urban and rural water supply and water pump pumping and irrigating systems, a motor runs at a rated rotating speed, and when the water consumption is reduced, a water pump still supplies water at a rated water yield, so that the waste of electric energy is caused.
At present, traditional frequency conversion self priming pump includes the pump head main part, the motor of being connected with the pump head main part, and the variable frequency control box of being connected with the motor, wherein, pump head main part sectional structure is as shown in fig. 1, be provided with water filling port 7 on the pump head main part 1, water inlet 5 and delivery port 6, be provided with intake antrum 2 that communicates in proper order in the pump head main part 1, impeller chamber 3 and play water cavity 4, be provided with the impeller in the impeller chamber 3, the output shaft of motor is on the impeller, be provided with pressure sensor and overhead tank on the pump head main part 1, pressure sensor connects in the variable frequency control box, delivery port 6 communicates with each other with play water cavity 4, water inlet 5 and water filling port 7 communicate with each other with intake.
The main working mode of the variable-frequency self-priming pump is that before the motor is started, the water inlet cavity of the pump head main body is filled with water through the water filling port, the belt wheel impeller rotates at a high speed after the motor is started, and the water body is thrown to the water outlet cavity under the action of centrifugal force, so that the water body flows to the water outlet cavity from the water inlet cavity.
The pressure sensor is used for detecting the pressure condition of the water outlet cavity, when the flow of the water outlet is reduced, the pressure of the water outlet cavity is increased, the frequency conversion control box reduces the rotating speed of the control motor, and the pressure of the water outlet cavity is dropped to a set value; when the flow of the water outlet is increased, the pressure of the water outlet cavity is reduced, the rotating speed of the motor is controlled to be increased by the variable frequency controller, the pressure of the water outlet cavity is increased to a set value, and the constant pressure control of the water outlet cavity is realized through the variable frequency control of the pressure sensor and the motor.
When traditional pump head main part reply frequency conversion self priming pump constant voltage control, reduce to be close to zero (in order to show the pipe network in the demand of no water) as the delivery port flow, go out the water cavity and be in high-pressure state, frequency conversion control box control motor stall or low-speed wriggling, but the intake antrum is in low pressure state (the water pressure of intake antrum is less than out the water cavity promptly), and the rivers in the play water cavity will flow back to the intake antrum this moment.
If there is the water demand in the pipe network this moment, the delivery port flow promotes by a wide margin, and variable frequency control box control motor rotates the water pressure with in the intake antrum and goes out the water cavity, and the impeller will form the offset with the water of backward flow this moment to influence impeller pivoted stability, consequently, traditional pump head main part when dealing with the condition that the delivery port flow changes repeatedly, have certain improvement part on the operating stability.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a pump head structure can improve operating stability to a certain extent.
The above technical purpose of the present invention can be achieved by the following technical solutions:
a pump head structure comprises a pump head main body, and a water inlet cavity, an impeller cavity and a water outlet cavity which are arranged in the pump head main body and sequentially communicated, wherein a water inlet communicated with the water inlet cavity is formed in the pump head main body, a water outlet communicated with the water outlet cavity is formed in the pump head main body, and a partition plate used for dividing the water outlet cavity into a first cavity and a second cavity is arranged in the pump head main body;
the first chamber is communicated with the impeller cavity, the second chamber is communicated with the water outlet, a water through hole is formed in the partition plate, and a one-way valve is installed in the water through hole.
Through above-mentioned technical scheme, the impeller cavity is used for installing the impeller, and the water inlet is connected on the inlet tube, and the delivery port is connected on the outlet pipe, and the outlet pipe inserts in the pipe network, and the impeller orders about through the motor and rotates, realizes the frequency conversion control to the motor through the pressure condition that detects water in the second chamber.
This application separates the play water cavity through the baffle, only realizes the one-way circulation of first cavity to second cavity through the check valve, avoids the water in the second cavity to flow back to first cavity, consequently should increase substantially the repetition change condition to the flow of delivery port, can improve operating stability, the loss of the energy saving to a certain extent.
It is specific, reduce at the delivery port flow and approach to zero (in order to show the anhydrous demand in the pipe network), this application detects and is in high-pressure state in the second cavity, the frequency conversion control box will control motor stall or low-speed wriggling, but the water pressure in first cavity and the intake antrum is less than the second cavity, prevent the water backward flow in the second cavity to first cavity and intake antrum through the check valve, consequently even there is the water demand to lead to delivery port flow to promote by a wide margin in the pipe network, the water that also can not have a large amount of refluxes forms the hedging with the impeller in the impeller cavity, thereby reach the mesh that improves impeller operating stability to a certain extent.
Preferably, the partition plate horizontally and transversely divides the water outlet cavity.
Through above-mentioned technical scheme, the baffle level is horizontal to be divided out the water cavity to make things convenient for during the water body is impressed the second cavity from first cavity smoothly.
Preferably, the pump head main body is provided with a sensor mounting port communicated with the second chamber.
Through above-mentioned technical scheme, the sensor installing port is used for installing pressure sensor, and pressure sensor connects in the frequency conversion controller of frequency conversion self priming pump, and pressure sensor is arranged in detecting the water pressure condition in the second cavity, and then realizes the frequency conversion control to the motor according to the water pressure condition in the second cavity, wherein, through the setting of sensor installing port to make things convenient for pressure sensor's ann to tear open.
Preferably, the pump head main body is provided with a pressure tank mounting port communicated with the second chamber.
Through above-mentioned technical scheme, the overhead tank installing port is used for installing the overhead tank, and the overhead tank is used for keeping the second cavity with sufficient pressure to can compress tightly the check valve, fall with the pressure of avoiding in the second cavity.
Preferably, the pump head main body is further provided with a water filling port, and the water filling port is communicated with the water inlet cavity.
Through above-mentioned technical scheme, the water filling port is arranged in the intake antrum water injection to make things convenient for the first start-up of self priming pump.
Preferably, the check valve comprises a mounting support, a valve cover and a return spring, the mounting support is fixed in the water outlet, the valve cover is used for being matched with the water through opening, a valve rod inserted on the mounting support is arranged on the valve cover, and the return spring is sleeved on the valve rod and is located between the mounting support and the valve cover.
Through above-mentioned technical scheme, the setting of above-mentioned check valve for realize the water flow direction second cavity in the first cavity, but the water backward flow in the separation second cavity is to the first cavity in, simple structure easily realizes.
Preferably, the mounting bracket is screwed into the water outlet.
Through the technical scheme, the mounting bracket is in threaded connection with the water outlet, so that the mounting bracket is convenient to mount and dismount.
An object of the utility model is to provide a frequency conversion self priming pump can improve operating stability to a certain extent.
The above technical purpose of the present invention can be achieved by the following technical solutions:
a frequency conversion self priming pump comprises the pump head structure according to the technical scheme.
Through above-mentioned technical scheme, reduce at the delivery port flow and approach to zero (in order to show the anhydrous demand in the pipe network), this application detects to be in high-pressure state in the second cavity, the frequency conversion control box will control motor stall or low-speed wriggling, but the water pressure in first cavity and the intake antrum is less than the second cavity, prevent the water backward flow in the second cavity to first cavity and intake antrum through the check valve, consequently even there is the water demand to lead to delivery port flow to promote by a wide margin in the pipe network, the water that also can not have a large amount of refluxes forms the hedging with the impeller in the impeller cavity, thereby reach the purpose that improves impeller operating stability to a certain extent.
To sum up, the utility model discloses a beneficial technological effect does:
this application separates the play water cavity through the baffle, only realizes the one-way circulation of first cavity to second cavity through the check valve, avoids the water in the second cavity to flow back to first cavity, consequently should increase substantially the repetition change condition to the flow of delivery port, can improve operating stability, the loss of the energy saving to a certain extent.
Drawings
FIG. 1 is a schematic cross-sectional view of a pump head body of the prior art;
fig. 2 is a schematic structural diagram of a pump head main body in the technical solution of the present invention;
fig. 3 is a schematic cross-sectional view of a pump head main body according to the technical solution of the present invention;
fig. 4 is a schematic structural view of the check valve in the technical solution of the present invention.
Reference numerals: 1. a pump head main body; 2. a water inlet cavity; 3. an impeller cavity; 4. a water outlet cavity; 41. a first chamber; 42. a second chamber; 5. a water inlet; 6. a water outlet; 7. a water injection port; 8. a flange structure; 9. a partition plate; 10. a water inlet; 11. a one-way valve; 111. mounting a bracket; 1111. an inner ring; 1112. an outer ring; 1113. a connecting rod; 112. a valve cover; 113. a return spring; 114. a valve stem; 115. a guide bar; 12. a sensor mounting port; 13. a pressure tank mounting port.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. It should be noted that: the relative arrangement of parts and steps set forth in these embodiments does not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
The first embodiment;
the utility model provides a pump head structure uses in the frequency conversion self priming pump, uses the pump head structure of this application can reach the purpose of practicing thrift frequency conversion self priming pump electric energy loss.
Referring to fig. 2 and 3, the pump head structure includes a pump head main body 1, a water inlet cavity 2, an impeller cavity 3 and a water outlet cavity 4 are arranged in the pump head main body 1, and the water inlet cavity 2, the impeller cavity 3 and the water outlet cavity 4 are sequentially communicated. The pump head main body 1 is provided with a water inlet 5 and a water outlet 6, the water inlet 5 is communicated with the water inlet cavity 2, the water outlet 6 is communicated with the water outlet cavity 4, the water inlet 5 is arranged at the side position of the pump head main body 1, and the water outlet 6 is arranged at the top position of the pump head main body 1.
Still be provided with water filling port 7 on the pump head main part 1, water filling port 7 sets up the top position at pump head main part 1, and water filling port 7 communicates with each other with intake antrum 2, and 7 accessible plug screws of water filling port seal.
A partition plate 9 used for dividing the water outlet cavity 4 into a first cavity 41 and a second cavity 42 is arranged in the pump head main body 1, the partition plate 9 horizontally and transversely divides the water outlet cavity 4, the first cavity 41 is communicated with the impeller cavity 3, the second cavity 42 is communicated with the water outlet 6, and the volume of the first cavity 41 is smaller than that of the second cavity 42. Wherein, a water through opening 10 is arranged on the clapboard 9, and a one-way valve 11 is arranged in the water through opening 10.
It is worth explaining that, the pump head main body 1 is provided with a sensor mounting port 12, the sensor mounting port 12 is communicated with the second chamber 42, the sensor mounting port 12 is used for mounting a pressure sensor, the pressure sensor is used for detecting the water pressure condition in the second chamber 42, and the pressure sensor is connected to a variable frequency control box of the variable frequency self-priming pump.
The pump head main body 1 is further provided with a pressure tank mounting port 13, the pressure tank mounting port 13 is communicated with the second chamber 42, the pressure tank mounting port 13 is used for mounting a pressure tank, the pressure tank is used for maintaining the water pressure in the second chamber 42, and further the check valve 11 is pressed tightly, so that the water in the second chamber 42 is prevented from leaking into the first chamber 41, and the pressure in the second chamber 42 is prevented from being reduced.
In one embodiment, as shown in fig. 4, the check valve 11 includes a mounting bracket 111, a valve cover 112 and a return spring 113, the mounting bracket 111 is fixed in the water outlet 6, the mounting bracket 111 is screwed into the water outlet 6, so as to fix the mounting bracket 111 in the water outlet 6, and the mounting bracket 111 includes an inner ring 1111, an outer ring 1112 and a plurality of connecting rods 1113 connecting the inner ring 1111 and the outer ring 1112.
The bonnet 112 is adapted to the water passage port 10, and when the bonnet 112 covers the water passage port 10, the bonnet 112 can seal the water passage port 10. Wherein, the outer circle surface of the valve cover 112 is provided with a rubber ring, and the rubber ring is used for improving the sealing performance between the valve cover 112 and the water through opening 10. The top of the bonnet 112 is vertically provided with a valve rod 114, the valve rod 114 is used for being inserted into the mounting bracket 111, and specifically, the valve rod 114 is adapted to the inner ring 1111 of the mounting bracket 111, wherein the bottom of the bonnet 112 is vertically provided with a plurality of guide rods 115 downwards, and the guide rods 115 are used for abutting against the inner hole wall of the water through port 10. The return spring 113 is sleeved on the valve rod 114, the return spring 113 is positioned between the mounting bracket 111 and the valve cover 112, one end of the return spring 113 props against the valve cover 112, and the other end of the return spring 113 props against the inner ring 1111 of the mounting bracket 111.
The working process of the application is as follows:
after the variable frequency self-priming pump is started, the pressure sensor is used for detecting the pressure condition of the water body in the second cavity 42, when the flow of the water outlet 6 is reduced, the water pressure in the second cavity 42 is increased, the pressure sensor detects the water pressure condition in the second cavity 42, the variable frequency control box reduces the rotating speed of the control motor, and the water pressure in the second cavity 42 falls back to a set value;
when 6 flows of delivery port increase, will make water pressure reduce in the second cavity 42, pressure sensor detects the water pressure condition in the second cavity 42, and the frequency conversion control box promotes the rotational speed of control motor, and then rises the water pressure in the second cavity 42 to the setting value, and the frequency conversion self priming pump passes through the frequency conversion control of pressure sensor and motor to realize the constant voltage control of second cavity 42 and delivery port 6.
Wherein, this application separates outlet chamber 4 through baffle 9, only realizes the one-way circulation of first cavity 41 to second cavity 42 through check valve 11, avoids the water among the second cavity 42 to flow back to first cavity 41, consequently deals with the flow in delivery port 6 and changes the condition repeatedly by a wide margin, can improve the stability of impeller operation, the loss of the energy saving to a certain extent.
Specifically, when the flow at the water outlet 6 decreases and approaches zero (indicating no water demand or low water demand in the pipe network), the water pressure in the second chamber 42 will rise, and the variable frequency controller will control the motor to stop rotating or creep at a low speed. Wherein the high pressure in the second chamber 42 will compress the one-way valve 11 and prevent the water in the second chamber 42 from flowing back into the first chamber 41.
Thus, when the flow at the outlet 6 suddenly increases (indicating a demand for useful water in the network), which will cause the water pressure in the second chamber 42 to decrease, the variable frequency controller will control the motor to rotate at a high speed to effect the supply of water into the second chamber 42. It can be seen that the present application prevents the backflow of the water in the second chamber 42 into the first chamber 41 through the check valve 11, wherein the second chamber 42 is defined as a high pressure region and the first chamber 41 is defined as a low pressure region, and the backflow of the water from the high pressure region into the low pressure region can be prevented through the check valve 11.
Therefore, when the motor drives the impeller to rotate at a low speed and a high speed to switch from a useless water demand to a useful water demand in a pipe network, a large amount of backflow water bodies and the impeller do not form opposite impact, and therefore the purposes of improving the running stability of the impeller and saving energy loss are achieved to a certain extent.
Example two;
the utility model provides a frequency conversion self priming pump, includes like motor, frequency conversion control box and as above-mentioned technical scheme the pump head structure, the motor is connected in the frequency conversion control box, is provided with the impeller in the pump head structure, and the output shaft of motor stretches into in the pump head structure in order to connect on the impeller.
The pump head is structurally provided with a pressure sensor and a pressure tank, the pressure sensor is connected to the variable frequency control, the pressure sensor is used for detecting the water pressure condition in the pump head structure, the water pressure condition is fed back to the variable frequency control box to form a data signal, and the control of the variable frequency control box on the rotating speed of the motor is realized through the water pressure condition in the pump head structure so as to output the water constant pressure from the pump head structure.
The working process of the embodiment is as follows:
after the variable frequency self-priming pump is started, the pressure sensor is used for detecting the pressure condition of the water body in the second cavity 42, when the flow of the water outlet 6 is reduced, the water pressure in the second cavity 42 is increased, the pressure sensor detects the water pressure condition in the second cavity 42, the variable frequency control box reduces the rotating speed of the control motor, and the water pressure in the second cavity 42 falls back to a set value;
when 6 flows of delivery port increase, will make water pressure reduce in the second cavity 42, pressure sensor detects the water pressure condition in the second cavity 42, and the frequency conversion control box promotes the rotational speed of control motor, and then rises the water pressure in the second cavity 42 to the setting value, and the frequency conversion self priming pump passes through the frequency conversion control of pressure sensor and motor to realize the constant voltage control of second cavity 42 and delivery port 6.
Wherein, this application separates outlet chamber 4 through pump head structure median septum 9, only realizes first cavity 41 to the one-way circulation of second cavity 42 through check valve 11, avoids the water among the second cavity 42 to flow back to first cavity 41, consequently deals with the flow in delivery port 6 and changes the condition repeatedly by a wide margin, can improve impeller operating stability, energy saving loss to a certain extent.
Specifically, when the flow at the water outlet 6 decreases and approaches zero (indicating no water demand or low water demand in the pipe network), the water pressure in the second chamber 42 will rise, and the variable frequency controller will control the motor to stop rotating or creep at a low speed. Wherein the high pressure in the second chamber 42 will compress the one-way valve 11 and prevent the water in the second chamber 42 from flowing back into the first chamber 41.
Thus, when the flow at the outlet 6 suddenly increases (indicating a demand for useful water in the network), which will cause the water pressure in the second chamber 42 to decrease, the variable frequency controller will control the motor to rotate at a high speed to effect the supply of water into the second chamber 42. It can be seen that, this application prevents through check valve 11 that the water in the second chamber 42 flows back to in the first chamber 41, therefore, from useless water demand to useful water demand in the pipe network, when the motor drives the impeller and rotates from low-speed to high-speed and switch, also can not have a large amount of water and the impeller formation clashing of backward flow to reach the purpose that improves impeller operating stability, energy saving loss to a certain extent.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. A pump head structure comprises a pump head main body (1), and a water inlet cavity (2), an impeller cavity (3) and a water outlet cavity (4) which are arranged in the pump head main body (1) and sequentially communicated, wherein the pump head main body (1) is provided with a water inlet (5) communicated with the water inlet cavity (2), the pump head main body (1) is provided with a water outlet (6) communicated with the water outlet cavity (4), and the pump head structure is characterized in that a partition plate (9) used for dividing the water outlet cavity (4) into a first cavity (41) and a second cavity (42) is arranged in the pump head main body (1);
the first chamber (41) is communicated with the impeller cavity (3), the second chamber (42) is communicated with the water outlet (6), a water through opening (10) is formed in the partition plate (9), and a one-way valve (11) is installed in the water through opening (10).
2. A pump head construction according to claim 1, wherein the partition (9) divides the outlet chamber (4) horizontally.
3. A pump head construction according to claim 1, wherein the pump head body (1) is provided with a sensor mounting port (12) in communication with the second chamber (42).
4. A pump head construction according to claim 1, wherein the pump head body (1) is provided with a pressure canister mounting port (13) which communicates with the second chamber (42).
5. A pump head structure as claimed in claim 1, wherein the pump head body (1) is further provided with a water inlet (7), and the water inlet (7) is communicated with the water inlet chamber (2).
6. A pump head structure as claimed in claim 1, wherein the one-way valve (11) comprises a mounting bracket (111), a valve cap (112) and a return spring (113), the mounting bracket (111) is fixed in the water outlet (6), the valve cap (112) is adapted to the water outlet (10), a valve rod (114) is arranged on the valve cap (112) and is connected to the mounting bracket (111), and the return spring (113) is connected to the valve rod (114) and is located between the mounting bracket (111) and the valve cap (112).
7. A pump head construction according to claim 6, wherein the mounting bracket (111) is screw-threaded into the outlet port (6).
8. A variable frequency self-priming pump comprising a pump head structure according to any one of claims 1 to 7.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020124705.5U CN211692958U (en) | 2020-01-19 | 2020-01-19 | Pump head structure and frequency conversion self priming pump of using thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020124705.5U CN211692958U (en) | 2020-01-19 | 2020-01-19 | Pump head structure and frequency conversion self priming pump of using thereof |
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| Publication Number | Publication Date |
|---|---|
| CN211692958U true CN211692958U (en) | 2020-10-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020124705.5U Active CN211692958U (en) | 2020-01-19 | 2020-01-19 | Pump head structure and frequency conversion self priming pump of using thereof |
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| Country | Link |
|---|---|
| CN (1) | CN211692958U (en) |
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2020
- 2020-01-19 CN CN202020124705.5U patent/CN211692958U/en active Active
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