阅读说明：本技术 一种带有环装喷口的真空喷射器 (Vacuum ejector with annular nozzle ) 是由 刘雪生 张韶 于 2019-08-16 设计创作，主要内容包括：一种带有环装喷口的真空喷射器,包括进气室、挡板和排气室；所述进气室呈半胶囊状,圆形那一端设置进气口,连接空气压缩机,另一端设置法兰盘Ⅰ,侧壁上靠近法兰盘Ⅰ一侧设置类J型真空管道,类J型真空管道底部伸入进气室底部,一直延伸到法兰盘Ⅰ平面,并且与进气室内壁形成环形狭小缝隙喷口；所述排气室呈圆柱形一端设置法兰盘Ⅱ,另一端设置出气口；所述进气室通过法兰盘Ⅰ与排气室的法兰盘Ⅱ连接；所述挡板安装在进气室和排气室之间,顶部铰链连接,能够朝排气室一侧打开,整个结构仅用三大部分组成,制造成本更低,结构简单新颖、不易损坏、使用寿命长、更省水,更符合现有轨道列车真空集便系统使用。(A vacuum ejector with an annular nozzle comprises an air inlet chamber, a baffle plate and an exhaust chamber; the air inlet chamber is in a half capsule shape, an air inlet is formed in one end of the round air inlet chamber and connected with an air compressor, a flange plate I is arranged at the other end of the round air inlet chamber, a J-like vacuum pipeline is arranged on one side, close to the flange plate I, of the side wall of the air inlet chamber, the bottom of the J-like vacuum pipeline extends into the bottom of the air inlet chamber and extends to the plane of the flange plate I, and an annular narrow gap nozzle is formed between the; one cylindrical end of the exhaust chamber is provided with a flange plate II, and the other end of the exhaust chamber is provided with an air outlet; the air inlet chamber is connected with a flange plate II of the exhaust chamber through a flange plate I; the baffle is installed between air inlet chamber and exhaust chamber, and top hinged joint can open towards exhaust chamber one side, and whole structure only comprises three major parts, and manufacturing cost is lower, and simple structure is novel, not fragile, long service life, more water-saving, more accords with current rail train vacuum collection just system and uses.)

1. A vacuum ejector with an annular nozzle is characterized in that: comprises an air inlet chamber, a baffle plate and an air outlet chamber; the air inlet chamber is in a half capsule shape, an air inlet is formed in one end of the round shape and connected with an air compressor, a flange plate I is arranged at the other end of the round shape, a J-like vacuum pipeline is arranged on one side, close to the flange plate I, of the side wall, the bottom of the J-like vacuum pipeline extends into the bottom of the air inlet chamber and extends to the plane of the flange plate I, a narrow gap nozzle is formed between the bottom of the J-like vacuum pipeline and the inner wall of the air inlet chamber, and the cross sections of the air inlet chamber and the J-like vacuum pipeline; one cylindrical end of the exhaust chamber is provided with a flange plate II, and the other end of the exhaust chamber is provided with an air outlet; the air inlet chamber is connected with a flange plate II of the exhaust chamber through a flange plate I; the baffle is installed between air inlet chamber and the air discharge chamber, and the top is hinged and can be opened towards one side of the air discharge chamber.

2. The vacuum ejector with an annular nozzle of claim 1, wherein: and the flange plate I and the flange plate II are provided with a layer of rubber pad and are connected through bolts, so that the air tightness of the vacuum ejector is ensured.

3. The vacuum ejector with an annular nozzle of claim 1, wherein: the flange plate I and the flange plate II are inclined, and the top of the flange plate I is inclined towards the air inlet chamber.

4. The vacuum ejector with annular nozzle of claim 3, wherein: the side face of the shaft at the upper end of the J-like vacuum pipeline is parallel to the plane I of the flange plate.

5. The vacuum ejector with an annular nozzle of claim 1, wherein: the baffle is circular, and the top sets up the sleeve pipe, installs between ring flange I and ring flange II through a round axle.

6. the vacuum ejector with an annular nozzle of claim 5, wherein: a stepped circular boss is arranged on one side of the baffle close to the air inlet chamber, the boss just extends into the J-like vacuum pipeline to block the J-like vacuum pipeline, and other edges block the narrow gap nozzle; the other side of the baffle is provided with a plurality of reinforcing ribs, the tops of the reinforcing ribs are connected with the sleeve, and the lower ends of the reinforcing ribs extend to the lower end of the baffle.

7. The vacuum ejector with an annular nozzle of claim 6, wherein: one side that the exhaust chamber inner wall top is close to ring flange II sets up a circular recess, and the outer wall and the exhaust chamber outer wall of recess are equal, when the baffle was opened, can just in time fall into the recess, make the baffle can open to the biggest.

8. the vacuum ejector with an annular nozzle of claim 1, wherein: two concave type mount pads are arranged at the top of the flange I, the concave type mount pads are internally semicircular and matched with mounting grooves formed at the top of the flange II, and a circular shaft penetrated with a sleeve is mounted in the concave type mount pads, so that the baffle can rotate around the circular shaft.

9. the vacuum ejector with an annular nozzle of claim 1, wherein: the one end that the air inlet chamber is close to ring flange I is inside to set up round convex step, guarantees to form narrow and small gap spout width even with the air inlet chamber inner wall.

10. A vacuum ejector with an annular nozzle as claimed in any one of claims 1 to 9, wherein: when the air compressor is used, compressed air enters the air inlet chamber from the air inlet, enters the air outlet chamber through the narrow gap nozzle and is then discharged through the air outlet, the baffle is in a one-way opening structure, and the compressed air blows the baffle up to the air outlet chamber and falls into the groove; the flow speed of the compressed air at the nozzle of the annular narrow gap is increased sharply, vacuum negative pressure is generated at the J-shaped vacuum pipeline according to the Venturi effect, and the J-shaped vacuum pipeline is connected with a transfer box of the vacuum excrement collecting system to achieve the vacuumizing effect; when the vacuum ejector stops working, the baffle falls back to the original position by the self gravity to prevent the foreign matter of the transfer box from flowing back; the air compressor controls the pressure of the compressed air, and the vacuum degree of the ejector can be freely adjusted.

Technical Field

The invention relates to the technical field of vacuumizing equipment, in particular to a vacuum ejector with an annular nozzle.

Background

The vacuum generator is widely applied to the fields of machinery, electronics, packaging, printing, plastics, robots and the like in industrial automation, is a novel, efficient, clean, economic and small vacuum component for generating negative pressure by utilizing a positive pressure air source, and makes it very easy and convenient to obtain the negative pressure in a place with compressed air or a place needing the positive and negative pressure simultaneously in a pneumatic system.

disclosure of Invention

In order to solve the problems in the prior art, the invention provides the vacuum ejector with the annular nozzle, the air acceleration outlet is designed into the annular narrow gap nozzle according to the Venturi effect, the whole structure only comprises three parts, the manufacturing cost is lower, the structure is simple and novel, the damage is not easy, the service life is long, water is saved, and the vacuum ejector is more suitable for the use of the existing rail train vacuum excrement collecting system.

In order to achieve the purpose, the invention adopts the following technical scheme: a vacuum ejector with an annular nozzle comprises an air inlet chamber, a baffle plate and an exhaust chamber; the air inlet chamber is in a half capsule shape, an air inlet is formed in one end of the round shape and connected with an air compressor, a flange plate I is arranged at the other end of the round shape, a J-like vacuum pipeline is arranged on one side, close to the flange plate I, of the side wall, the bottom of the J-like vacuum pipeline extends into the bottom of the air inlet chamber and extends to the plane of the flange plate I, a narrow gap nozzle is formed between the bottom of the J-like vacuum pipeline and the inner wall of the air inlet chamber, and the cross sections of the air inlet chamber and the J-like vacuum pipeline; one cylindrical end of the exhaust chamber is provided with a flange plate II, and the other end of the exhaust chamber is provided with an air outlet; the air inlet chamber is connected with a flange plate II of the exhaust chamber through a flange plate I; the baffle is installed between air inlet chamber and the air discharge chamber, and the top is hinged and can be opened towards one side of the air discharge chamber.

Furthermore, the flange plate I and the flange plate II are provided with a layer of rubber gasket and connected through bolts, so that the air tightness of the vacuum ejector is guaranteed.

Furthermore, the flange plate I and the flange plate II are inclined, and the top of the flange plate I and the top of the flange plate II are inclined towards the air inlet chamber.

Furthermore, the axial side face of the upper end of the J-like vacuum pipeline is parallel to the plane of the flange plate I.

Furthermore, the baffle is circular, the top of the baffle is provided with a sleeve, and the baffle is arranged between the flange plate I and the flange plate II through a circular shaft.

Furthermore, a stepped circular boss is arranged on one side, close to the air inlet chamber, of the baffle, the boss just extends into the J-like vacuum pipeline to block the J-like vacuum pipeline, and other edges block the narrow gap nozzle; the other side of the baffle is provided with a plurality of reinforcing ribs, the tops of the reinforcing ribs are connected with the sleeve, and the lower ends of the reinforcing ribs extend to the lower end of the baffle.

Furthermore, a circular groove is formed in one side, close to the flange plate II, of the top of the inner wall of the exhaust chamber, the outer wall of the groove is flush with the outer wall of the exhaust chamber, and when the baffle is opened, the baffle can just fall into the groove, so that the baffle can be opened to the maximum.

Furthermore, two concave mounting seats are arranged at the top of the flange I, the insides of the concave mounting seats are semicircular and matched with mounting grooves formed at the top of the flange II, and a circular shaft penetrating through a sleeve is mounted in the concave mounting seats, so that the baffle can rotate around the circular shaft.

Furthermore, a circle of convex steps are arranged inside one end, close to the flange plate I, of the air inlet chamber, and the nozzle width is uniform due to the fact that a narrow gap is formed between the air inlet chamber and the inner wall of the air inlet chamber.

When the air compressor is used, compressed air enters the air inlet chamber from the air inlet, enters the air outlet chamber through the narrow gap nozzle and is then discharged through the air outlet, the baffle is in a one-way opening structure, and the compressed air blows the baffle up to the air outlet chamber and falls into the groove; the flow speed of the compressed air at the nozzle of the annular narrow gap is increased sharply, vacuum negative pressure is generated at the J-shaped vacuum pipeline according to the Venturi effect, and the J-shaped vacuum pipeline is connected with a transfer box of the vacuum excrement collecting system to achieve the vacuumizing effect; when the vacuum ejector stops working, the baffle falls back to the original position by the self gravity to prevent the foreign matter of the transfer box from flowing back; the air compressor controls the pressure of the compressed air, and the vacuum degree of the ejector can be freely adjusted.

Compared with the prior art, the invention has the beneficial effects that:

1) The device utilizes the Venturi effect to gradually change the air outlet into the annular narrow gap nozzle so as to generate high-speed airflow, thereby generating vacuum; compared with the prior device, the device has simpler structure, lower manufacturing cost, time and labor saving in the assembling and installing processes, difficult damage in working, long service life, safety and reliability;

2) the invention adopts the annular narrow gap nozzle, has novel structure, can emit whistling sound when working, can judge the working state of the device through sound if a fault occurs, and judges the fault position;

3) the invention is applied to a vacuum excrement collecting system of a rail train, can realize emergency start and emergency stop, can adjust the required power at any time according to the requirement and can save more flushing water.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and those skilled in the art can also obtain other drawings according to the drawings without unique creative efforts.

FIG. 1 is a schematic structural view of the present invention;

FIG. 2 is a cross-sectional view of the present invention;

FIG. 3 is a schematic view of the structure of the intake chamber of the present invention;

FIG. 4 is a schematic view of an alternative inlet chamber configuration of the present invention;

FIG. 5 is a cross-sectional view of the intake chamber of the present invention;

FIG. 6 is a schematic structural view of a baffle of the present invention;

FIG. 7 is a schematic view of another aspect of the baffle of the present invention;

FIG. 8 is a schematic view of the construction of the exhaust chamber of the present invention;

FIG. 9 is a schematic view of an alternative view of the exhaust chamber of the present invention;

The device comprises an air inlet chamber 1, a baffle plate 2, an exhaust chamber 3, an air inlet 11, a flange I12, a J-like vacuum pipeline 13, a narrow gap nozzle 14, a concave mounting seat 15, a sleeve 21, a circular shaft 22, a boss 23, reinforcing ribs 24, a flange II 31, an air outlet 32, a groove 33 and a mounting groove 34.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.