Small injection pump structure assembly

Abstract

The utility model provides a small injection pump structure assembly and aims to solve the technical problems that in the prior art, a plurality of parts of an injection pump need to be machined in batches and then assembled, and the structure and assembly are complex. The check valve mainly comprises a valve core and a valve body, the injection pump is more compact in structural design and only comprises the valve body and the valve element, and the inlet channel, the feeding channel and the vacuum chamber of the injection pump are all formed in the valve body when the parts are machined; the pump is only composed of two parts, machining is convenient, assembly is avoided, and economical efficiency is better; meanwhile, the small-size and compact injection pump can be applied to a very small use scene, and the considerable mixing and conveying efficiency is still kept under the condition that the size is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of jet pumps, in particular to a small jet pump structural assembly. Background Art

[0002] The working principle of a jet pump is based on the conversion of kinetic and static energy. At the nozzle, high-speed gas creates negative pressure, which draws in and mixes other gases or liquids. During operation, gas is ejected from the nozzle at a high velocity, creating a low pressure in the vacuum chamber. This draws the conveying fluid into the vacuum chamber, where it then enters the mixing chamber, slows down, and is discharged, achieving the purpose of conveying the fluid.

[0003] The existing defects are: the existing jet pump is composed of multiple parts, and each component needs to be processed separately and then assembled; in the field of small and micro precision equipment, it is inconvenient to process and assemble, and the economic efficiency is poor. Utility Model Content

[0004] In response to the shortcomings of the above-mentioned prior art, the present application provides a small jet pump structural assembly, which is more compact in structural design and includes two parts: a valve body and a valve core. When processing the parts, the inlet channel, feed channel and vacuum chamber are all formed on the valve body; the pump consists of only two parts, which is convenient for processing and assembly-free, and more economical.

[0005] The technical solutions adopted by the present invention to solve the above technical problems are as follows:

[0006] A small jet pump structural assembly includes a valve core and a valve body. One end of the valve body is provided with an inlet channel for conveying a working fluid, and the other end is provided with a feed channel for conveying a mixed fluid. An annular vacuum chamber is also provided in the middle of the valve body. The end of the inlet channel is a nozzle connected to the vacuum chamber. The end of the feed channel is connected to the vacuum chamber. The valve core is arranged directly above the vacuum chamber, and an annular gap is formed between the inlet end face of the valve core and the protruding end face of the nozzle for generating negative pressure.

[0007] Furthermore, the inlet channel includes a large diameter section formed in the axial direction of the valve body, the end face of the large diameter section is formed to the outside of the diameter of the vacuum chamber, and a small diameter section is provided through the lower part of the large diameter section toward the center line of the vacuum chamber, and a nozzle is also formed perpendicular to the small diameter section.

[0008] Furthermore, the outer end surface of the nozzle is integrally formed with the bottom surface of the vacuum chamber, and the internal flow channel of the nozzle is connected with the small-diameter section.

[0009] Furthermore, the feeding channel includes a wide diameter section formed axially on the other side of the valve body, the end face of the wide diameter section is formed to the outside of the diameter of the vacuum chamber, and a narrow diameter section is formed with the center of the end face of the wide diameter section facing the vacuum chamber, and the narrow diameter section is connected to the vacuum chamber.

[0010] Furthermore, the working fluid in the inlet channel is high-pressure air.

[0011] Furthermore, the valve core comprises a mixing section, a throat section and an expansion section from bottom to top, and the inner diameter of the end face of the mixing section is larger than the outer diameter of the cross section of the nozzle to form an annular gap.

[0012] The beneficial effects of the utility model are as follows:

[0013] Compared with the existing technology, the jet pump provided by the present invention is more compact in structural design. It consists of two parts, a valve body and a valve core. When processing the parts, its inlet channel, feeding channel and vacuum chamber are all formed on the valve body. The pump is composed of only two parts, which is convenient for processing and assembly-free, and more economical. At the same time, this small-volume, compact jet pump can be used in very small usage scenarios, and still maintains considerable mixing and conveying efficiency when the volume is reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the utility model;

[0015] Figure 2 for Figure 1 Explosion diagram of

[0016] Figure 3 It is a schematic diagram of the internal structure of the utility model.

[0017] Among them: 1. Valve core; 11. Mixing section; 12. Throat section; 13. Expansion section;

[0018] 2. Valve body; 21. Vacuum chamber; 22. Nozzle; 23. Large diameter section; 24. Small diameter section; 25. Wide diameter section; 26. Narrow diameter section. DETAILED DESCRIPTION

[0019] The technical solution of the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0020] The utility model provides a small jet pump structural assembly, aiming to solve the problem that the jet pump in the prior art needs to process a plurality of parts in batches and then assemble them, which is complicated in assembly and structural design.

[0021] like Figures 1 to 3As shown, the small jet pump structure assembly includes a valve core 1 and a valve body 2. One end of the valve body 2 is provided with an inlet channel for conveying the working fluid, and the other end is provided with a feeding channel for conveying the mixed fluid. An annular vacuum chamber 21 is also provided in the middle of the valve body 2. The end of the inlet channel is a nozzle 22 connected to the vacuum chamber 21. The end of the feeding channel is connected to the vacuum chamber 21. The valve core 1 is arranged directly above the vacuum chamber 21, and the inlet end face of the valve core 1 and the protruding end face of the nozzle 22 form an annular gap for generating negative pressure.

[0022] In one embodiment of the present utility model, the inlet channel includes a large diameter section 23 formed in the axial direction of the valve body 2, the end face of the large diameter section 23 is formed to the outside of the diameter of the vacuum chamber 21, and a small diameter section 24 is provided through the lower part of the large diameter section 23 toward the center line of the vacuum chamber 21, and a nozzle 22 is also formed perpendicular to the small diameter section 24.

[0023] In one embodiment of the present invention, the outer end surface of the nozzle 22 is integrally formed with the bottom surface of the vacuum chamber 21 , and the internal flow channel of the nozzle 22 is connected to the small-diameter section 24 .

[0024] In one embodiment of the present utility model, the feeding channel includes a wide diameter section 25 formed axially on the other side of the valve body 2, the end face of the wide diameter section 25 is formed to the outside of the diameter of the vacuum chamber 21, and the center of the end face of the wide diameter section 25 is formed with a narrow diameter section 26 toward the vacuum chamber 21, and the narrow diameter section 26 is connected to the vacuum chamber 21.

[0025] In one embodiment of the present invention, the working fluid in the inlet channel is high-pressure air.

[0026] In one embodiment of the present invention, the valve core 1 includes a mixing section 11, a throat section 12 and an expansion section 13 from bottom to top. The inner diameter of the end face of the mixing section 11 is larger than the outer diameter of the cross section of the nozzle 22 to form an annular gap.

[0027] The specific structure and working principle of the utility model:

[0028] In order to simplify the structure, reduce the volume, and reduce the assembly process, the present invention structurally includes only two parts, a valve body 2 and a valve core 1, with an overall length of only 37 mm. When processing parts, its inlet channel, feed channel and vacuum chamber 21 are all formed on the valve body 2. One end of the valve body 2 is an air inlet channel for high-speed gas, and the other end is a feed channel for the fluid to be transported. The fluid, which can be a liquid, enters the vacuum chamber 21, and the high-speed gas is ejected from the nozzle 22 at high speed, forming a negative pressure at the gap with the valve core 1, so that the fluid entering the vacuum chamber 21 at the other end is simultaneously sucked into the cavity of the valve core 1, and the mixed fluid is ejected from the outlet of the valve core 1 to complete the transportation.

[0029] The above description is an explanation of the utility model, not a limitation of the utility model. The scope of the utility model is defined by the claims. Any form of modification can be made within the scope of protection of the utility model.

Claims

1. A small jet pump structure assembly, characterized by: The invention comprises a valve core (1) and a valve body (2), wherein one end of the valve body (2) is provided with an inlet channel for conveying a working fluid, and the other end thereof is provided with a feeding channel for conveying a mixed fluid, and an annular vacuum chamber (21) is further provided in the middle of the valve body (2), the end of the inlet channel is a nozzle (22) connected to the vacuum chamber (21), the end of the feeding channel is connected to the vacuum chamber (21), the valve core (1) is provided directly above the vacuum chamber (21), and an annular gap for generating negative pressure is formed between the inlet end face of the valve core (1) and the protruding end face of the nozzle (22).

2. A small jet pump structure assembly according to claim 1, characterized in that: The inlet channel comprises a large diameter section (23) formed in the axial direction of the valve body (2), the end face of the large diameter section (23) is formed to the outside of the diameter of the vacuum chamber (21), and a small diameter section (24) is formed through the lower part of the large diameter section (23) toward the center line of the vacuum chamber (21), and a nozzle (22) is also formed perpendicular to the small diameter section (24).

3. A small jet pump structure assembly according to claim 2, characterized in that: The outer end surface of the nozzle (22) and the bottom surface of the vacuum chamber (21) are integrally formed, and the internal flow channel of the nozzle (22) is connected to the small-diameter section (24).

4. A small jet pump structure assembly according to claim 1, characterized in that: The feeding channel includes a wide diameter section (25) formed axially on the other side of the valve body (2), the end face of the wide diameter section (25) is formed to the outside of the diameter of the vacuum chamber (21), and the center of the end face of the wide diameter section (25) is formed with a narrow diameter section (26) facing the vacuum chamber (21), and the narrow diameter section (26) is communicated with the vacuum chamber (21).

5. The small jet pump structure assembly according to claim 1, characterized in that: The working fluid in the inlet channel is high-pressure air.

6. A small jet pump structure assembly according to claim 1, characterized in that: The valve core (1) comprises a mixing section (11), a throat section (12) and an expansion section (13) from bottom to top. The inner diameter of the end face of the mixing section (11) is larger than the outer diameter of the cross section of the nozzle (22) to form an annular gap.

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