CN212251207U

CN212251207U - Flow-adjustable vacuum generator

Info

Publication number: CN212251207U
Application number: CN202020732545.2U
Authority: CN
Inventors: 樊瑜瑾; 李浙昆; 刘剑雄; 何伟
Original assignee: Kunming University of Science and Technology
Current assignee: Kunming University of Science and Technology
Priority date: 2020-05-07
Filing date: 2020-05-07
Publication date: 2020-12-29
Anticipated expiration: 2030-05-07

Abstract

The utility model relates to an adjustable flow vacuum generator belongs to pneumatic element technical field. The utility model discloses a spray tube, case, tube socket, blast pipe make each part connection fixed as an organic whole through threaded connection, have set up a case in the entrance of spray tube, adjust compressed air flow through the conical surface of adjusting the case and the gap size at air jet edge in the use, reach the purpose of adjustment vacuum generator's suction flow and vacuum, the utility model discloses structure and manufacturing process are simple, and convenient to use can be applied to in all kinds of occasions that need the vacuum.

Description

Flow-adjustable vacuum generator

Technical Field

The utility model relates to an adjustable flow vacuum generator belongs to pneumatic element technical field.

Background

The vacuum generator is an economic and efficient small-sized vacuum component which utilizes compressed air to generate negative pressure, the working principle of the vacuum generator is that the compressed air forms high-speed jet flow at the outlet of a spray pipe and generates a sucking action, so that the air around the outlet of the spray pipe is continuously sucked, the pressure in a mixing cavity is reduced to form vacuum, the vacuum generator is widely applied to the fields of machinery, electronics, packaging, printing, plastics, robots and the like, and the defects exist that the suction flow and the vacuum degree of the vacuum generator are not only related to the structure and the size of the vacuum generator but also related to the air pressure and the flow of the compressed air, and the flow and the pressure of an external air source are often related to the adjustment of the suction flow and the vacuum degree.

Disclosure of Invention

An object of the utility model is to provide an adjustable flow vacuum generator, with common vacuum generator difference be at the entrance of spray tube set up a toper case, under the certain condition of flow and pressure of outside air supply, adjust the compressed air flow that the jet orifice edge of toper case and spray tube just can adjust the inflow spray tube in the gap, reach the purpose of adjustment vacuum generator's suction flow and vacuum.

The utility model adopts the technical proposal that: a flow-adjustable vacuum generator comprises a spray pipe, a valve core, a pipe seat and an exhaust pipe, wherein the spray pipe comprises an internal thread I, an air injection port edge, an external thread I, an external thread II and an air injection hole, the valve core comprises a hexagonal head, an external thread III, an overflowing hole and a conical surface, and the pipe seat comprises an internal thread II, a mixing cavity, an external thread IV, a vacuum port and an internal thread III; the exhaust pipe comprises an exhaust hole, an external thread V and an external thread VI;

the internal thread I of spray tube is fixed with the external thread III threaded connection of case, and the external thread I and the outside intake pipe threaded connection of spray tube are fixed, and the external thread II of spray tube is fixed with the internal thread II threaded connection of tube socket, and the external thread V of blast pipe is fixed with the internal thread III threaded connection of tube socket, and the external thread VI of blast pipe is fixed with outside blast pipe threaded connection, and the external thread IV of tube socket is fixed with outside vacuum mouth trachea threaded connection.

The utility model has the advantages that: the utility model connects and fixes the spray pipe and the valve core through the thread connection and connects and fixes the spray pipe and the exhaust pipe with the pipe seat into a whole; when using compressed air enters into the spray tube entrance from outside intake pipe, the gap between overflowing hole and case conical surface that passes the case and the spray tube jet orifice edge forms the efflux from the high-speed blowout of fumarole, and fluidic entrainment effect makes the pressure reduction of the hybrid chamber of tube socket reach the purpose that forms the vacuum, and the rotary valve case can adjust the gap between case conical surface and the spray tube jet orifice edge and adjust compressed air flow before the use, and then reaches the purpose of adjusting vacuum generator's suction flow and vacuum, the utility model discloses structure and manufacturing process are simple, and convenient to use can be applied to in all kinds of occasions that need the vacuum.

Drawings

FIG. 1 is a schematic diagram of the present invention;

FIG. 2 is a schematic structural view of the nozzle;

FIG. 3 is a schematic structural view of the valve cartridge;

FIG. 4 is a schematic view of a header structure;

FIG. 5 is a schematic view of the exhaust pipe;

the reference numbers in the figures are: 1-spray pipe, 2-valve core, 3-valve seat, 4-exhaust pipe, 11-internal thread I, 12-air nozzle edge, 13-external thread I, 14-external thread II, 15-air nozzle, 21-hexagonal head, 22-external thread III, 23-overflowing hole, 24-conical surface, 31-internal thread II, 32-mixing cavity, 33-external thread IV, 34-vacuum port, 35-internal thread III, 41-exhaust hole, 42-external thread V, 43-external thread VI.

Detailed Description

The invention will be further described with reference to the following drawings and examples, but the scope of the invention is not limited thereto. Those skilled in the art will understand that the following examples are only for illustrating the present invention and should not be considered as limiting the scope of the present invention, the examples do not include specific techniques, connections or conditions, the techniques, connections, conditions or product specifications described in the literature in the field, and the materials, instruments or equipment used are not manufacturer's, but all conventional products obtained by purchasing.

Example 1: as shown in fig. 1-5, an adjustable flow vacuum generator comprises a nozzle 1, a valve core 2, a valve seat 3 and an exhaust pipe 4, wherein the nozzle 1 comprises an internal thread I11, a nozzle edge 12, an external thread I13, an external thread II14 and a nozzle hole 15, the valve core 2 comprises a hexagon head 21, an external thread III22, an overflowing hole 23 and a conical surface 24, and the valve seat 3 comprises an internal thread II31, a mixing cavity 32, an external thread IV33, a vacuum port 34 and an internal thread III 35; the exhaust pipe 4 comprises an exhaust hole 41, an external thread V42 and an external thread VI 43;

the internal thread I11 of spray tube 1 is fixed with the external screw thread III22 threaded connection of case 2, the external screw thread I13 of spray tube 1 is fixed with outside intake pipe threaded connection, the external screw thread II14 of spray tube 1 is fixed with the internal screw thread II31 threaded connection of tube socket 3, the external screw thread V42 of blast pipe 4 is fixed with the internal screw thread III35 threaded connection of tube socket 3, the external screw thread VI43 of blast pipe 4 is fixed with outside blast pipe threaded connection, the external screw thread IV33 of tube socket 3 is fixed with outside vacuum mouth trachea threaded connection.

The utility model discloses a theory of operation is: the utility model discloses at first make spray tube 1 and case 2 be connected fixedly through threaded connection, rethread threaded connection makes spray tube 1 and blast pipe 4 and tube socket 3 be connected fixedly as an organic whole, compressed air passes through the discharge orifice 23 of case 2 and the gap between the conical surface 24 of case 2 and the jet orifice edge 12 of spray tube 1 and spouts from fumarole 15 high-speed formation efflux when entering spray tube 1 entrance from outside intake pipe in use, the entrainment of efflux makes the pressure reduction in the hybrid chamber 32 of tube socket 3 produce the negative pressure, the air that the suction vacuum mouth 34 got into, reach and form the vacuous purpose, jet flow that fumarole 15 spouted and the air of negative pressure suction are discharged from the exhaust hole 41 of blast pipe 4; the gap between conical surface 24 that the use was preceding to rotate case 2 can adjust case 2 and the jet orifice edge 12 of spray tube 1 adjusts compressed air flow, and then reaches the purpose of adjusting vacuum generator's suction flow and vacuum, the utility model discloses structure and manufacturing process are simple, and convenient to use can be applied to in all kinds of occasions that need the vacuum.

While the present invention has been described in detail with reference to the embodiments shown in the drawings, the present invention is not limited to the embodiments, and various changes can be made without departing from the spirit of the present invention within the knowledge of those skilled in the art.

Claims

1. An adjustable flow vacuum generator, comprising: the device comprises a spray pipe (1), a valve core (2), a pipe seat (3) and an exhaust pipe (4), wherein the spray pipe (1) comprises an internal thread I (11), a gas injection port edge (12), an external thread I (13), an external thread II (14) and a gas injection hole (15), the valve core (2) comprises a hexagonal head (21), an external thread III (22), a overflowing hole (23) and a conical surface (24), and the pipe seat (3) comprises an internal thread II (31), a mixing cavity (32), an external thread IV (33), a vacuum port (34) and an internal thread III (35); the exhaust pipe (4) comprises an exhaust hole (41), an external thread V (42) and an external thread VI (43);

the internal thread I (11) of spray tube (1) is fixed with external screw thread III (22) threaded connection of case (2), external screw thread I (13) and outside intake pipe threaded connection of spray tube (1) are fixed, external screw thread II (14) and internal screw thread II (31) threaded connection of tube socket (3) of spray tube (1) are fixed, external screw thread V (42) and internal screw thread III (35) threaded connection of tube socket (3) of blast pipe (4) are fixed, external screw thread VI (43) and outside blast pipe threaded connection of blast pipe (4) are fixed, external screw thread IV (33) and outside vacuum mouth trachea threaded connection of tube socket (3) are fixed.