CN112460036A

CN112460036A - Pump head

Info

Publication number: CN112460036A
Application number: CN202011430068.5A
Authority: CN
Inventors: 陈斌
Original assignee: Zhejiang Wigo Co ltd
Current assignee: Zhejiang Wigo Co ltd
Priority date: 2020-12-09
Filing date: 2020-12-09
Publication date: 2021-03-09

Abstract

The invention provides a pump head, which belongs to the technical field of water pumps. It solves the problem of insufficient pressurization of the water flow by the existing water pump. The pump head includes a housing, the housing has a mounting part for connecting the motor, the mounting part has a booster cavity for accommodating the motor, the number of the mounting parts is at least two, and the pump head also includes a connection between two adjacent boosters. The communication pipe of the pressure chamber, the communication pipe has an inflow section located between two adjacent installation parts, and the inflow section is communicated with the pressurization cavity of one of the installation parts, and the communication pipe also has an outflow section located in front of the other installation part , and the outflow section is communicated with its pressurizing chamber, and the transition between the inflow section and the outflow section is smooth. The pump head has the advantage of increasing the pressurization of the water flow by the pump.

Description

Pump head

Technical Field

The invention belongs to the technical field of water pumps and relates to a pump head.

Background

The pump is a machine for conveying fluid or pressurizing fluid, and can transfer the mechanical energy of prime mover or other external energy to liquid to increase the energy of liquid, and it is mainly used for conveying water, oil, acid-base liquid, emulsion, suspoemulsion and liquid metal. The pump is including the pump head that has the pressure boost chamber and the motor of connecting the pump head, and epaxial being equipped with of motor is located the impeller in pressure boost chamber, and the pump head has inlet tube and drain pipe, and when motor during operation, external water flows into pressure boost chamber through the inlet tube, and the impeller rotation makes rivers produce centrifugal force, and then the water in pressure boost chamber is discharged from the drain pipe.

Conventional pumps, for example, chinese patent literature documents disclose canned motor pumps for transporting particulate-containing liquid media [ patent nos.: 201420207865.0, respectively; application publication No.: CN203809306U ], which comprises a casing and a pump body with an inner pump cavity, wherein a rotor is installed in the casing, the end of the rotor extends out of the casing, an impeller is fixed on the end of the extending end, an inlet communicated with the inner pump cavity is arranged at the side end of the pump body, and a water outlet communicated with the pump cavity is arranged at the upper end of the body.

The power and the rotation speed of one motor are determined, namely the pressure of the water flow output from the pump body is determined, and if the pressure of the water flow is increased, a mode which is more powerful and has higher rotation speed is selected by a person skilled in the art in a conventional and easily imaginable mode. However, the price of a single high-power motor is higher than that of a plurality of low-power motors, so that the manufacturing cost of the pump is high, and the popularization is not facilitated.

Disclosure of Invention

The invention aims to provide a pump head aiming at the problems in the prior art, and solves the problem that the existing pump is insufficient in water flow pressurization.

The purpose of the invention can be realized by the following technical scheme: the utility model provides a pump head, which comprises a housin, the casing has the installation department that is used for connecting the motor, the installation department has a pressure boost chamber that is used for holding the motor, a serial communication port, the quantity of installation department is two at least, and the pump head still includes the communicating pipe that communicates two adjacent pressure boost chambers, communicating pipe has the inflow section that is located between two adjacent installation departments, and the pressure boost chamber intercommunication of inflow section and one of them installation department, communicating pipe still has the outflow section that is located another installation department front portion, and outflow section and pressure boost chamber intercommunication thereof, the rounding off between inflow section and the outflow section.

Because the casing has at least two installation departments that are used for connecting the motor for a plurality of motors of mountable on the casing, the motor can select for use existing motor among the prior art as required. The motor can carry out the pressure boost to the rivers of its place pressure boost intracavity, and communicating pipe establishes ties two adjacent pressure boost chambeies for a plurality of motors all can carry out the pressure boost to the rivers that flow into in the casing, in order to improve the pressure boost effect of pump. Wherein, because of having pressure by the rivers that a pressure boost chamber flows, when rivers flow in the communicating pipe, rivers can take place the friction with the pipe wall of communicating pipe, and the friction leads to the pressure loss of rivers, in conventional cognition, in order to reduce the pressure loss when rivers flow through communicating pipe, can shorten the length of communicating pipe as far as possible usually to accelerate rivers and pass through the speed of communicating pipe.

And this application will flow into the section and locate between two adjacent installation departments, this structure has prolonged the length of communicating pipe, has slowed down the speed that rivers passed through communicating pipe under the unchangeable prerequisite of circulation cross-section promptly. Further, the setting position of inflow section makes the rivers that flow from the installation department flow to the inflow section in smoothly, avoids rivers impact the inner wall of inflow section, and the at utmost reduces rivers and the friction that flows in between the section inner wall, reduces the pressure loss of rivers. Simultaneously, because of the outflow section is located the front portion of installation department and rather than the chamber intercommunication that pressurizes, with smooth and sly transition between inflow section and the outflow section, avoid communicating pipe to bend, lead to rivers striking communicating pipe's inner wall at the flow in-process, and avoid as far as possible the rivers flow in-process because of overcoming with the pressure loss that leads to between the communicating pipe wall, reduce rivers from this and flow the pressure loss who produces between different pumps.

In foretell pump head, the pressure boost chamber is the opening chamber, and the pressure boost chamber sets up the rear portion in the installation department, set up the water inlet that is used for supplying liquid to flow into the pressure boost chamber on the installation department and be used for supplying the delivery port that liquid flows out the pressure boost chamber, the water inlet is located the diapire in pressure boost chamber, the delivery port is located the lateral wall in pressure boost chamber and is formed with and is curved water conservancy diversion face, the diapire in water conservancy diversion face and pressure boost chamber all with the inner wall smooth transition of inflow section. The opening cavity enables the motor to conveniently extend into the pressurizing cavity, and the motor is conveniently connected with the mounting part. Because of the rivers that flow from the delivery port have pressure, the water conservancy diversion leads to the flow direction of rivers, and smooth transition makes rivers flow smoothly and gently from the installation department to the in-process of inflow section, avoids the velocity of flow of rivers to improve to reduce rivers and flow into and cut friction between the section inner wall, reduce the pressure loss of rivers from this.

In foretell pump head, the cross-section of installation department is square, the section that flows in links to each other and realizes the intercommunication with the junction on installation department both sides limit, the section that flows out links to each other and realizes the intercommunication with the middle part of installation department. Because of the rivers can flow along the chamber wall in pressure boost chamber when flowing in the pressure boost chamber, and the inflow section sets up its arrangement position according to the shape of installation department, makes the inflow section communicate with the minimum in pressure boost chamber as far as possible, avoids producing the difference in height between the delivery port of installation department and the inflow section for the water flow that flows out by the installation department delivery port is smooth and easy flows to the inflow section, with reduce the friction between rivers and the inflow section inner wall as far as possible.

In the pump head, the communicating pipe further comprises an arc-shaped transition section, the inflow section is connected with the outflow section through the transition section, and the sectional area of the connection part of the outflow section and the transition section is larger than the caliber of the connection part of the outflow section and the pressurizing cavity. Because the inflow section and the outflow section are not positioned in the same plane, an inflection point exists between the inflow section and the outflow section, and the transition section is arranged into an arc-shaped structure, so that the water flow in the inflow section smoothly flows into the outflow section. Furthermore, through the structure that the sectional area of the connection part of the outflow section and the transition section is larger than the caliber of the communication part of the outflow section and the pressurizing cavity, the change of the section of the communication pipe is avoided to accelerate the flow velocity of water flow in the communication pipe, so that the water flow is smooth and smooth, and the friction between the water flow and the inner wall of the communication pipe is reduced as much as possible.

In foretell pump head, the outer wall of changeover portion links to each other with the installation department of connecting the outflow section, the cross-section of changeover portion is squarely, and the corner circular arc transition of changeover portion. This structure makes the shape of changeover portion regular, increases the connection area between changeover portion and the installation department, that is to say the changeover portion arranges along the profile of installation department, further makes the rivers flow along the installation department, and this structure reduces because of the interference that water inlet position and delivery port position led to the fact the flow of rivers for rivers are smooth and easy to flow in from the water inlet of installation department, and smooth and round transition reduces the friction between rivers and the changeover portion inner wall.

In foretell pump head, the installation department sets up along the inline, and the pump head still has the inlet tube that supplies liquid to pass through and the drain pipe that supplies liquid to pass through, the inlet tube links to each other with the installation department that is located one end, and the inlet tube communicates with its water inlet, the drain pipe links to each other with the installation department that is located the other end, and the drain pipe communicates with its delivery port, and the length of drain pipe is less than the length of inlet tube. The structure enables the shell to realize the inflow and outflow of the external water source through a water inlet pipe and a water outlet pipe. Simultaneously, be less than the length of inlet tube with the length of drain pipe, make the drain pipe storage have towards the rivers that the pressure boost chamber flows on the one hand, on the other hand accelerates the outflow speed behind the rivers pressure boost, reduces the friction between rivers and the drain pipe wall promptly, further reduces the pressure loss of rivers from this.

In the above pump head, the water inlet pipe is provided with a check valve for blocking the liquid from flowing from the water inlet of the mounting portion to the water inlet pipe. The setting of check valve makes external rivers can only follow the inlet tube inflow, and can not follow the inlet tube outflow, improves the stability that rivers flow in the casing.

In the pump head, the water inlet pipe is provided with a flow sensor for detecting flow, and the water outlet pipe is provided with a temperature sensor for detecting temperature and a pressure sensor for detecting pressure. The flow sensor is arranged on the water inlet pipe, so that the flow sensor can monitor the water flow flowing into the pump head in time; because of there is the deviation in the pressure boost that the motor produced rivers, through set up temperature sensor and pressure sensor on the drain pipe, the pressure boost numerical value and the temperature numerical value of the pump head that flow of acquireing that can be more definite to the maintainer is according to the pressure boost effect of reality, and then in time makes the adjustment to the pump.

In the above pump head, the housing and the communication pipe are of an integrated structure. This structure improves the flow stability of rivers on the one hand, and on the other hand makes the compact structure of pump head.

Compared with the prior art, the pump head provided by the invention has the following advantages:

1. through setting up a plurality of installation departments, and two adjacent installation departments set up through communicating pipe series connection, realize that a plurality of motors carry out the pressure boost to the rivers that flow into the casing, and the motor of different power can make up in order to reach the pressure boost effect of single high-power motor, this structure can be according to the power of the pressure boost demand adjustment motor of actual needs on the one hand, on the other hand has compensatied the defect that the manufacturing cost of the pump that single high-power motor accumulated and leads to high price than a plurality of low-power motors.

2. Through carrying out rational arrangement to the position of communicating pipe, avoid rivers impact the inner wall of communicating pipe, and with the delivery port wall of casing and the inner wall of inflow section, the inner wall smooth transition of changeover portion for rivers flow gently in the communicating pipe, with avoid rivers flow the in-process as far as possible because of overcome with communicating pipe wall between the pressure loss that leads to, reduce the pressure loss when rivers pass through communicating pipe from this.

Drawings

Fig. 1 is an overall structural schematic diagram of the front part of the pump head.

Fig. 2 is a schematic view of the overall structure of the rear part of the pump head.

Fig. 3 is a first cross-sectional view of the present pump head.

Fig. 4 is a second cross-sectional view of the pump head.

Fig. 5 is a schematic structural view of the pump head in an applied state.

In the figure, 1, a housing; 11. an installation part; 12. a pressurizing cavity; 13. a water inlet; 14. a water outlet; 141. a flow guide surface; 2. a communicating pipe; 21. an inflow section; 22. an outflow section; 23. a transition section; 3. a water inlet pipe; 4. a drain pipe; 5. a check valve; 6. an electric motor.

Detailed Description

The following are specific embodiments of the present invention and are further described with reference to the drawings, but the present invention is not limited to these embodiments.

As shown in fig. 1 and 2, the pump head includes a housing 1 and a communication pipe 2, the housing 1 has at least two mounting portions 11 for connecting the motor 6, the mounting portions 11 have a pressure increasing chamber 12 for accommodating the motor 6, and the pressure increasing chambers 12 of two adjacent mounting portions 11 are communicated with each other through the communication pipe 2. The housing 1 and the communication pipe 2 are of an integrated structure.

As shown in fig. 3 and 4, the communication pipe 2 has an inflow section 21 located between two adjacent installation parts 11, the cross section of the installation part 11 is square, the inflow section 21 is connected with the intersection of two side edges of one installation part 11 and communicated with each other, the communication pipe 2 further has an outflow section 22 located in the front of the other installation part 11, and the outflow section 22 is connected with the middle of the installation part 11 and communicated with each other. The communicating pipe 2 further comprises an arc-shaped transition section 23, the inflow section 21 is connected with the outflow section 22 through the transition section 23, and smooth transition is formed between the inflow section 21 and the transition section 23 and between the transition section 23 and the outflow section 22. The cross-sectional area of the junction of the outflow section 22 and the transition section 23 is greater than the caliber of the junction of the outflow section 22 and the plenum chamber 12. The outer wall of changeover portion 23 links to each other with the installation department 11 of being connected outflow section 22, and the cross-section of changeover portion 23 is square, and the corner circular arc transition of changeover portion 23.

As shown in fig. 4, the pressurizing cavity 12 is an open cavity, the pressurizing cavity 12 is opened at the rear portion of the installation portion 11, a water inlet 13 for liquid to flow into the pressurizing cavity 12 and a water outlet 14 for liquid to flow out of the pressurizing cavity 12 are provided on the installation portion 11, the water inlet 13 is located on the bottom wall of the pressurizing cavity 12, the water outlet 14 is located on the side wall of the pressurizing cavity 12 and is formed with an arc-shaped flow guide surface 141, and the flow guide surface 141 and the bottom wall of the pressurizing cavity 12 are both in smooth transition with the inner wall of the inflow section 21.

As shown in fig. 4 and 5, in the present embodiment, the number of the mounting portions 11 is two, and in actual production, the number of the mounting portions 11 may be three or four. The mounting parts 11 are arranged in a straight line, and the water outlets 14 of the mounting parts 11 at the two ends are arranged in a staggered manner. The pump head still has inlet tube 3 that supplies liquid to pass through and the inlet tube 4 that supplies liquid to pass through, and inlet tube 3 links to each other with the installation department 11 that is located one end, and inlet tube 3 and its water inlet 13 intercommunication, and inlet tube 4 links to each other with the installation department 11 that is located the other end, and inlet tube 4 communicates with its delivery port 14, and the length of inlet tube 4 is less than the length of inlet tube 3.

As shown in fig. 4, a check valve 5 for blocking the flow of liquid from the water inlet 13 of the mounting portion 11 toward the water inlet pipe 3 is provided in the water inlet pipe 3. Be equipped with the flow sensor who is used for measuring flow on inlet tube 3, be equipped with the pressure sensor who is used for measuring the temperature sensor of temperature and is used for measuring pressure on inlet tube 4.

As shown in fig. 5, in the present embodiment, the motor 6 is a canned motor 6, and the canned motors 6 are two in number, one canned motor 6 is connected to one of the mounting portions 11, the other canned motor 6 is connected to the other mounting portion 11, and the canned motors 6 each have an impeller located in the pressure increasing chamber 12. When the shielding motor 6 works, the impeller rotates, an external water source flows into the pressurizing cavity 12 of one of the installation parts 11 through the water inlet pipe 3, the impeller in the pressurizing cavity 12 pressurizes the inflow water, the inflow water continuously flows in through the water inlet pipe 3, the inflow water in the pressurizing cavity 12 flows to the pressurizing cavity 12 of the other installation part 11 through the communicating pipe 2, the inflow water is secondarily pressurized through the impeller in the pressurizing cavity 12, and then the inflow water in the pressurizing cavity 12 flows out through the water inlet pipe 4.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications or additions may be made to the described embodiments or alternatives may be employed by those skilled in the art without departing from the spirit or ambit of the invention as defined in the appended claims.

Although the terms of the housing 1, the mounting portion 11, the pressurizing chamber 12, the water inlet 13, the water outlet 14, the flow guide surface 141, the communication pipe 2, the inflow section 21, the outflow section 22, the transition section 23, the water inlet pipe 3, the water inlet pipe 4, the check valve 5, the motor 6, etc. are used more herein, the possibility of using other terms is not excluded. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed as being without limitation to any additional limitations that may be imposed by the spirit of the present invention.

Claims

1. The utility model provides a pump head, includes casing (1), casing (1) has installation department (11) that are used for connecting motor (6), installation department (11) have one be used for holding booster chamber (12) of motor (6), a serial communication port, the quantity of installation department (11) is two at least, and the pump head is still including communicating pipe (2) of two adjacent booster chambers (12) of intercommunication, communicating pipe (2) have inflow section (21) that are located between two adjacent installation departments (11), and inflow section (21) communicate with booster chamber (12) of one of them installation department (11), communicating pipe (2) still have outflow section (22) that are located another installation department (11) front portion, and outflow section (22) communicate with its booster chamber (12), smooth transition between inflow section (21) and outflow section (22).

2. A pump head as claimed in claim 1, wherein the pumping chamber (12) is an open chamber, and the pumping chamber (12) is opened at the rear of the mounting portion (11), the mounting portion (11) is opened with a water inlet (13) for liquid to flow into the pumping chamber (12) and a water outlet (14) for liquid to flow out of the pumping chamber (12), the water inlet (13) is located on the bottom wall of the pumping chamber (12), the water outlet (14) is located on the side wall of the pumping chamber (12) and is formed with an arc-shaped flow guide surface (141), and the bottom walls of the flow guide surface (141) and the pumping chamber (12) are both in smooth transition with the inner wall of the inflow section (21).

3. A pump head as claimed in claim 1 or 2, wherein the mounting portion (11) is square in cross-section, the inflow section (21) is connected to and communicates with the intersection of the two sides of the mounting portion (11), and the outflow section (22) is connected to and communicates with the middle of the mounting portion (11).

4. A pump head according to claim 3, wherein the communicating tube (2) further comprises an arc-shaped transition section (23), the inflow section (21) is connected to the outflow section (22) through the transition section (23), and the cross-sectional area of the connection between the outflow section (22) and the transition section (23) is larger than the diameter of the connection between the outflow section (22) and the pumping chamber (12).

5. A pump head according to claim 3, wherein the outer wall of the transition section (23) is connected to a mounting portion (11) connected to the outflow section (22), the cross-section of the transition section (23) is square, and the corners of the transition section (23) are rounded.

6. A pump head as claimed in claim 2, wherein the mounting portions (11) are arranged in a line, the pump head further having a liquid passing inlet tube (3) and a liquid passing inlet tube (4), the inlet tube (3) being connected to the mounting portion (11) at one end and the inlet tube (3) being in communication with a water inlet (13) thereof, the inlet tube (4) being connected to the mounting portion (11) at the other end and the inlet tube (4) being in communication with a water outlet (14) thereof, the length of the inlet tube (4) being less than the length of the inlet tube (3).

7. A pump head as claimed in claim 6, wherein the inlet tube (3) is provided with a check valve (5) therein for blocking flow of liquid from the inlet opening (13) of the mounting portion (11) towards the inlet tube (3).

8. A pump head as claimed in claim 6, wherein the inlet tube (3) is provided with a flow sensor for sensing flow, and the inlet tube (4) is provided with a temperature sensor for sensing temperature and a pressure sensor for sensing pressure.

9. A pumphead as claimed in claim 1 or 2, wherein the housing (1) and the feed-through tube (2) are of unitary construction.