阅读说明：本技术 一种设有内导流结构的喷射泵 (Jet pump with inner flow guide structure ) 是由 黄宇斌 吴登昊 于 2021-01-18 设计创作，主要内容包括：本发明一种设有内导流结构的喷射泵,在泵体中,从前至后依次设有喷射器、前旋涡盖、环形导液、叶轮室和后旋涡盖。本发明的设计是：在喷射器和前旋涡盖之间设置一个内导流件；内导流件中心处设有连接通道,连接通道内部设有隔板,连接通道与内导流件外壁之间设有若干螺旋形导流叶片；喷射器后端的喷管内接于内导流件的连接通道；叶轮室与所述的喷管、连接通道连通。本发明的优异效果是：流体秩序化流动,流体压力波动趋于平稳,对泵体内部的无序冲击更少,减少损耗,效率更高,噪音更低,机械配件寿命更长。(The invention relates to an injection pump with an internal flow guide structure. The design of the invention is as follows: an inner flow guide part is arranged between the ejector and the front vortex cover; a connecting channel is arranged at the center of the inner flow guide piece, a partition plate is arranged in the connecting channel, and a plurality of spiral flow guide blades are arranged between the connecting channel and the outer wall of the inner flow guide piece; the spray pipe at the rear end of the sprayer is internally connected with the connecting channel of the inner flow guide piece; the impeller chamber is communicated with the spray pipe and the connecting channel. The invention has the following excellent effects: the fluid ordered flow, fluid pressure fluctuation tends to be steady, and is less to the unordered impact of pump body inside, reduces the loss, and efficiency is higher, and the noise is lower, and mechanical parts life-span is longer.)

1. A jet pump with an inner flow guide structure is characterized in that a pump body (1) is cylindrical with an opening at the rear end, a pump body water inlet (1.1) is formed in the front end of the pump body (1), and a pump body water outlet (1.2) is formed in the rear end of the pump body; an ejector (2), a front vortex cover (4), an annular liquid guide (6), an impeller chamber (5) and a rear vortex cover (7) are sequentially arranged in the pump body (1) from front to back; the ejector (2) consists of an ejector water inlet (2.1), a nozzle (2.2) and a spray pipe (2.3); the ejector (2) is fixed by an ejector water inlet (2.1) at the head part and internally connected with a pump body water inlet (1.1); the lower end of the water inlet (2.1) of the ejector is provided with a conical nozzle (2.2), and the rear end of the nozzle (2.2) is provided with a cylindrical spray pipe (2.3) concentric with the nozzle; the front vortex cover (4) is sequentially connected with an annular liquid guide (6) at the rear end and a rear vortex cover (7); the annular liquid guide (6) is arranged between the front vortex cover (4) and the rear vortex cover (7), the front vortex cover and the rear vortex cover are tightly attached to each other, and the rear vortex cover (7) is tightly buckled on the front vortex cover (4) and seals the front vortex cover and the rear vortex cover in the pump body (1); an impeller chamber (5) is formed in the center between the front vortex cover (4) and the rear vortex cover (7) of the annular liquid guide (6), and an impeller is arranged in the impeller chamber (5); the method is characterized in that:

an inner flow guide part (3) is arranged between the ejector (2) and the front vortex cover (4).

2. The injection pump provided with the inner guide structure as set forth in claim 1, wherein: the inner flow guide piece (3) is in a tapered cylinder shape, the front end with a small caliber faces the ejector (2), a connecting channel (3.1) is arranged at the center of the inner flow guide piece (3), a partition plate (3.3) is arranged inside the connecting channel (3.1), and a plurality of spiral flow guide blades (3.2) are arranged between the connecting channel (3.1) and the outer wall of the inner flow guide piece (3); a spray pipe (2.3) at the rear end of the ejector (2) is internally connected with a connecting channel (3.1) of the inner flow guide piece (3); the impeller chamber (5) is communicated with the spray pipe (2.3) and the connecting channel (3.1).

3. The injection pump provided with the inner guide structure as set forth in claim 1, wherein: the water inlet (1.1) of the pump body is positioned at the position close to the upper part of the front end of the pump body (1), and the water outlet (1.2) of the pump body is positioned at the position above the rear end of the pump body (1).

4. The ejector pump provided with the inner guide structure according to claim 1 or 2, wherein: the front end of the inner flow guide piece (3) is connected with the back of the ejector (2) in a fastening way.

5. The ejector pump provided with the inner guide structure according to claim 1 or 2, wherein: a flow channel is formed between the outer wall of the inner flow guide part (3) and the inner wall of the pump body (1).

6. The ejector pump provided with the inner guide structure according to claim 1 or 2, wherein: the front vortex cover (4) is concentrically fixed by the top of the front vortex cover propping against the partition plate (3.3).

7. The injection pump provided with the inner guide structure as set forth in claim 1, wherein: the back of the annular liquid guide (6) is provided with an O-shaped ring groove.

8. The utility model provides a work flow of jet pump with interior water conservancy diversion structure which characterized in that: fluid enters the ejector (2) through a water inlet (1.1) of the pump body and then enters the impeller chamber (5) through the spray pipe (2.3) to complete pressurization and is thrown out by the impeller; when the fluid is thrown out, the fluid is guided to the inner flow guide piece (3) by the annular fluid guide (6), then is guided to the inlet of the nozzle (2.2) by the spiral flow guide blade (3.2) to be divided, one part of the fluid enters the nozzle (2.2) to be sprayed and pressurized, and the other part of the fluid directly flows out of the water outlet (1.2) of the pump body through a flow channel formed by the outer wall of the inner flow guide piece (3) and the inner wall of the pump body (1).

Technical Field

The invention relates to a mechanical structure of a pump, in particular to an injection pump with a flow guide structure arranged inside.

Background

The ejector pump is applied to various fields by virtue of the characteristic of high lift, the principle is that an ejector is additionally arranged on the basis of a common centrifugal pump, and partial fluid is subjected to secondary pressurization, so that the purpose of improving the lift is achieved, meanwhile, the fluid flow direction is relatively disordered due to the complication of an internal cavity, the efficiency is reduced, and more noises are brought. Traditional jet pump does not have interior water conservancy diversion facility, and some fluid directly flows to pump body delivery port, and another part is unordered towards pump body inside everywhere, and wherein unordered towards everywhere fluid has some again to pass through the nozzle, gets into the inside fluid that mixes by the entering of sprayer water inlet of sprayer, accomplishes to mix with higher speed, gets into the impeller chamber and carries out the secondary pressure boost. In the whole process, due to the disordered impact of the fluid, large energy loss is caused, and noise caused by the impact of the fluid on the pump body 1 is brought.

Disclosure of Invention

The invention aims to provide a mechanical scheme, improve the internal flow passage environment of the jet pump, improve the efficiency of the jet pump and reduce the noise.

The purpose of the invention is realized by the following technical scheme:

a jet pump with an internal flow guide structure is characterized in that a pump body is cylindrical with an opening at the rear end, a pump body water inlet is formed in the front end of the pump body, and a pump body water outlet is formed in the rear end of the pump body; an ejector, a front vortex cover, an annular liquid guide, an impeller chamber and a rear vortex cover are sequentially arranged in the pump body from front to back; the ejector consists of an ejector water inlet, a nozzle and a spray pipe; the ejector is fixed by an ejector water inlet of the head part and internally connected with a water inlet of the pump body; the lower end of the water inlet of the ejector is provided with a conical nozzle, and the rear end of the nozzle is provided with a cylindrical spray pipe concentric with the nozzle; the front vortex cover is sequentially connected with the annular liquid guide and the rear vortex cover at the rear end; the annular liquid guide is arranged between the front vortex cover and the rear vortex cover, the front vortex cover and the rear vortex cover are tightly attached, and the rear vortex cover is tightly buckled on the front vortex cover and seals the front vortex cover in the pump body; an impeller chamber is formed in the center between the annular liquid guide front vortex cover and the annular liquid guide rear vortex cover, and an impeller is arranged in the impeller chamber;

an inner flow guide member is disposed between the injector and the forward vortex cover.

The inner flow guide part is in a cylindrical shape with a taper, the front end with a small caliber faces the ejector, a connecting channel is arranged at the center of the inner flow guide part, a partition plate is arranged inside the connecting channel, and a plurality of spiral flow guide blades are arranged between the connecting channel and the outer wall of the inner flow guide part; the spray pipe at the rear end of the sprayer is internally connected with the connecting channel of the inner flow guide piece; the impeller chamber is communicated with the spray pipe and the connecting channel.

The water inlet of the pump body is positioned at the position close to the upper part of the front end of the pump body, and the water outlet of the pump body is positioned at the position above the rear end of the pump body.

The front end of the inner flow guide part is connected with the back of the ejector in a fastening way.

A flow passage is formed between the outer wall of the inner flow guide part and the inner wall of the pump body.

The front vortex cover is concentrically fixed by the top of the front vortex cover propping against the partition plate.

And an O-shaped ring groove is formed in the back of the annular liquid guide.

The invention has the following excellent effects:

1. the fluid flows orderly, the loss is reduced, the efficiency is higher, and the noise is lower;

2. the disorder impact of the fluid on the interior of the pump body is less, so that the service life of mechanical accessories is longer;

3. the fluid pressure fluctuation tends to be stable, and intelligent control is easier to realize;

4. the back of the annular liquid guide is provided with an O-shaped ring, so that the sealing effect of the impeller chamber is enhanced.

Description of the drawings:

FIG. 1 is a cross-sectional view of the structure of the present invention;

FIG. 2 is a front view of the inner baffle member of the present invention;

figure 3 is a flow diagram of the fluid movement within the pump body during operation of the present invention.

In the figure: 1. a pump body; 1.1, a water inlet of a pump body; 1.2, a water outlet of the pump body; 2. an ejector; 2.1, a water inlet of the ejector; 2.2, a nozzle; 2.3, spraying a pipe; 3. an inner flow guide member; 3.1, connecting a channel; 3.2, guide vanes; 3.3, a partition plate; 4. a front vortex cover; 5. an impeller chamber; 6. annular drainage; 7. and a rear vortex cover.

Detailed Description

Referring to fig. 1, a jet pump with an internal flow guiding structure, a pump body 1 is a cylinder with an opening at the rear end. In the pump body 1, an ejector 2, an inner flow guide part 3, a front vortex cover 4, an annular liquid guide 6, an impeller chamber 5 and a rear vortex cover 7 are arranged in sequence from front to back. The position that the front end of the pump body 1 is close to the top is equipped with the pump body water inlet 1.1, and pump body delivery port 1.2 is equipped with above the pump body 1 rear end.

The ejector 2 consists of an ejector water inlet 2.1, a nozzle 2.2 and a spray pipe 2.3, the ejector 2 is fixedly connected with a pump body water inlet 1.1 through the ejector water inlet 2.1 at the head part, the lower end of the ejector water inlet 2.1 is provided with the conical nozzle 2.2, and the rear end of the nozzle 2.2 is provided with the cylindrical spray pipe 2.3 concentric with the nozzle. The end of the nozzle 2.3 is connected with the connecting channel 3.1 of the inner flow guide part 3.

As shown in fig. 2, the inner flow guiding member 3 is a tapered cylinder, the front end with a small caliber faces the ejector 2, a connecting channel 3.1 is arranged at the center of the inner flow guiding member 3, and a partition plate 3.3 is arranged inside the connecting channel 3.1. A plurality of spiral guide vanes 3.2 are arranged between the connecting channel 3.1 and the outer wall of the inner guide member 3. Referring to fig. 1 again, the front end of the inner diversion piece 3 is connected with the back of the ejector 2 in a fastening way, and the nozzle 2.3 at the rear end of the ejector 2 is internally connected with the connecting channel 3.1 of the inner diversion piece 3. A flow passage is formed between the outer wall of the inner flow guide part 3 and the inner wall of the pump body 1. The front vortex cover 4 is concentrically fixed by the top against the partition 3.3. The front vortex cover 4 is sequentially connected with an annular liquid guide 6 at the rear end and a rear vortex cover 7, and the rear vortex cover 7 is tightly buckled on the front vortex cover 4 and seals the front vortex cover and the rear vortex cover in the pump body 1. The annular guide liquid 6 is arranged between the front vortex cover 4 and the rear vortex cover 7, the three are tightly attached, an impeller chamber 5 is formed in the center, and the impeller chamber 5 is communicated with the spray pipe 2.3 and the connecting channel 3.1. An impeller is provided in the impeller chamber 5.

An O-shaped ring groove is arranged at the back of the annular liquid guide 6.

The key technology of the invention is that the inner flow guide piece is added in the pump body to make the fluid entering the pump body output orderly. The operation of the jet pump of the present invention will now be briefly described:

as shown by arrows in figure 3, fluid enters the ejector 2 through the water inlet 1.1 of the pump body and then enters the impeller chamber 5 through the spray pipe 2.3 to complete pressurization and is thrown out of the impeller. In the invention, the inner flow guide part 3 is additionally arranged, when fluid is thrown out after being pressurized in the impeller 5, the fluid is guided to the inner flow guide part 3 by the annular liquid guide 6 (the back part of the annular liquid guide is additionally provided with an O-shaped ring groove, the sealing effect is further enhanced, so that the fluid flows to the inner flow guide part 3 more orderly), then the fluid is guided to an inlet of the nozzle 2.2 by the spiral flow guide blade 3.2 to be divided, one part of the fluid enters the nozzle 2.2 to be sprayed and pressurized, and the other part of the fluid directly flows out of a water outlet 1.2 of the pump body through a flow passage formed by the outer wall of the inner flow guide part 3 and.