CN215390085U

CN215390085U - Powder spraying type valve

Info

Publication number: CN215390085U
Application number: CN202121757522.8U
Authority: CN
Inventors: 汤少康
Original assignee: Hengguan Meiyan Health Industry Guangzhou Co ltd
Current assignee: Hengguan Meiyan Health Industry Guangzhou Co ltd
Priority date: 2021-07-29
Filing date: 2021-07-29
Publication date: 2022-01-04
Anticipated expiration: 2031-07-29

Abstract

The utility model discloses a powder spraying valve, which comprises a sealing cup and a valve chamber, wherein a sealing ring is arranged between the sealing cup and the valve chamber, an air inlet hole is arranged on the side surface of the valve chamber, a valve rod penetrating through the sealing ring and a spring for upwards pressing the valve rod are arranged in the valve chamber, a channel with an opening at the upper end and a closed lower end is arranged on the valve rod, the channel consists of an upper channel and a lower channel, the side wall of the lower channel is provided with an inlet which can be blocked by the sealing ring when the valve rod is bounced and is exposed in the valve chamber when the valve rod is pressed down, the upper channel is larger than the lower channel and forms a step structure, a conical part for transitionally connecting the upper channel and the lower channel is arranged between the upper channel and the lower channel, a ball body which can freely move in the upper channel is arranged at the conical part, a limiting rod which extends into the upper channel and limits the upward moving height of the ball body is fixed at the upper end of the valve rod, the limiting rod is hollow and is always communicated with the upper channel, a side groove which is inwards concave towards the side surface and can vertically communicate the upper channel and the lower channel when the ball body falls on the upper channel is arranged on the conical part, has the characteristic of uniform powder spraying.

Description

Powder spraying type valve

[ technical field ] A method for producing a semiconductor device

The utility model relates to a powder spraying type valve.

[ background of the utility model ]

Powder spraying type valves are generally applied to pressure containers, powder and gas are packaged in the containers under high pressure, and the powder is driven to be sprayed out through the gas when a valve rod is pressed down. The existing powder spraying valve has poor powder spraying uniformity due to the influence of airflow and valve structure in the process of spraying powder under the drive of gas.

The present invention has been made based on such a situation.

[ Utility model ] content

The utility model aims to overcome the defects of the prior art and provides the powder spraying type valve which is simple in structure and can spray powder uniformly.

The utility model is realized by the following technical scheme:

a powder spraying valve comprises a sealing cup, a valve chamber is fixed in the middle of the sealing cup, air inlet holes communicated with the inside and the outside are formed in the side face of the valve chamber, a sealing ring is arranged between the sealing cup and an upper end opening of the valve chamber, a valve rod penetrating through the sealing ring is arranged in the valve chamber, a spring used for upwards pressing the valve rod is arranged in the valve chamber, a channel with an open upper end and a closed lower end is arranged on the valve rod and comprises an upper channel and a lower channel, an inlet which can be blocked by the sealing ring when the valve rod is bounced and is exposed in the valve chamber when the valve rod is pressed down is arranged on the side wall of the lower channel, the upper channel is larger than the lower channel and forms a stepped structure, a conical part which is in transition connection with the upper channel and the lower channel is arranged between the upper channel and the lower channel, a ball body which can freely move in the upper channel is arranged at the conical part, a limiting rod which extends into the upper channel and limits the upward movement height of the ball body is fixed at the upper end of the valve rod, the limiting rod is hollow and is communicated with the upper channel all the time, and the conical part is provided with a side groove which is concave towards the side surface and can vertically communicate the upper channel and the lower channel when the ball body falls on the side groove.

In the powder injection valve, the upper channel and the lower channel are coaxial and have circular cross sections, and the outer diameter of the sphere is smaller than that of the upper channel and larger than that of the lower channel.

According to the powder spraying type valve, the limiting rod is provided with the bottom plate for sealing the lower port of the limiting rod, the bottom plate is provided with the upwards-concave spherical arc surface from the edge of the bottom plate, the radius of the spherical arc surface is larger than that of a sphere, the center of the top of the spherical arc surface is provided with the downwards-convex top bag, and the bottom plate is provided with a plurality of communicating holes which are used for communicating the limiting rod and the upper channel from top to bottom around the outer side of the top bag.

According to the powder spraying valve, the upper end of the limiting rod is provided with the flange which protrudes laterally and is pressed against the upper end of the valve rod, the side surface of the upper channel is provided with the concave clamping groove, and the side surface of the limiting rod is provided with the buckle which is buckled in the clamping groove so as to prevent the limiting rod from being separated from the valve rod.

According to the powder spraying type valve, the valve rod is provided with the step column which is positioned below the sealing ring and forms a step clamped below the sealing ring, the side surface of the step column is circumferentially provided with a plurality of outwards-protruding separation strips, and a gap is reserved between each separation strip and the inner wall of the valve chamber.

According to the powder spraying valve, the lower end of the valve chamber is connected with the suction pipe.

Compared with the prior art, the utility model has the following advantages:

1. when the utility model is applied to a container which is packaged with high-pressure gas and powder, the ball body is inserted into the powder through a suction pipe, the ball body falls on the conical part under the action of gravity, the inlet is sealed by the sealing ring, when the valve rod is pressed down, the inlet enters the valve chamber to communicate the valve chamber with the lower channel, the gas in the container enters the valve chamber through the gas inlet, the powder enters the valve chamber through the suction pipe, the gas and the powder are initially mixed, then the gas and the powder pass through the inlet to enter the lower channel and are scattered after the ball body is blocked, a part of the gas flows to the upper channel from the side groove, a part of the gas and the powder rush up along the ball body to enter the upper channel, and the gas and the powder are fully mixed in the scattering process as well as the rolling and floating of the ball body, so that the uniformity of powder spraying is improved.

2. According to the utility model, through the arrangement of the side grooves, when the high-pressure gas and the powder in the container are reduced after being used for a period of time, the gas and the powder can pass through the side grooves and be sprayed out when the pressure is insufficient, and the situation that the gas and the powder cannot be sprayed out due to the blockage of the ball bodies is avoided.

3. The utility model has simple structure, convenient assembly and low production cost.

[ description of the drawings ]

The following detailed description of embodiments of the utility model is provided in conjunction with the appended drawings, in which:

FIG. 1 is a front view of a powder spray type valve of the present invention;

FIG. 2 is a cross-sectional view taken along A-A of FIG. 1;

a partial enlarged view at B in fig. 2 in fig. 3;

fig. 4 is an exploded view of the combined structure of the valve stem, ball and gag lever post.

[ detailed description ] embodiments

The utility model is further described below with reference to the accompanying drawings:

as shown in fig. 1 to 4, a powder spraying valve includes a sealing cup 1, a valve chamber 2 is fixed in the middle of the sealing cup 1, an air inlet 21 for communicating the inside and the outside is provided on the side surface of the valve chamber 2, a sealing ring 3 is provided between the sealing cup 1 and the upper end opening of the valve chamber 2, a valve rod 4 passing through the sealing ring 3 is provided in the valve chamber 2, a spring 5 for pressing the valve rod 4 upward is provided in the valve chamber 2, a passage with an open upper end and a closed lower end is provided on the valve rod 4, the passage is composed of an upper passage 41 and a lower passage 42, the side wall of the lower passage 42 is provided with an inlet 43 which can be blocked by the sealing ring 3 when the valve rod 4 is popped up and is exposed in the valve chamber 2 when the valve rod 4 is pressed down, the upper passage 41 is larger than the lower passage 42 and forms a stepped structure, a tapered portion 44 for connecting the upper passage 41 and the lower passage 42 is provided between them, the ball body 6 capable of freely moving in the upper channel 41 is arranged at the conical part 44, the outer diameter of the ball body 6 is larger than that of the lower channel 42 and cannot fall into the lower channel 42, the limiting rod 7 which extends into the upper channel 41 and limits the upward movement height of the ball body 6 is fixed at the upper end of the valve rod 4, the limiting rod 7 is hollow and is always communicated with the upper channel 41, and the conical part 44 is provided with a side groove 45 which is concave towards the side and can vertically communicate the upper channel 41 and the lower channel 42 when the ball body 6 falls on the upper surface.

The upper channel 41 and the lower channel 42 are coaxial and have circular cross sections, and the outer diameter of the sphere 6 is smaller than that of the upper channel 41 and larger than that of the lower channel 42, so that the structure is simple.

The lower end of the valve chamber 2 is connected with a suction pipe 8.

When the utility model is applied to a container which is sealed with high-pressure gas and powder, the suction pipe 8 is inserted into the powder, the ball 6 falls on the conical part 44 under the action of gravity, the inlet 43 is sealed by the sealing ring 3, when the valve rod 4 is pressed down, the inlet 43 enters the valve chamber 2 to communicate the valve chamber 2 with the lower channel 42, the gas in the container enters the valve chamber 2 through the air inlet 21, the powder enters the valve chamber 2 through the suction pipe 8, the gas and the powder pass through the inlet 43 after initial mixing to enter the lower channel 42 and are scattered after the ball 6 is blocked, a part of the gas and the powder flow to the upper channel 41 from the side groove 45, a part of the gas and the powder are flushed up along the ball 6 to enter the upper channel 41, and the gas and the powder are fully mixed during scattering and rolling and floating of the ball 6, so that the uniformity of powder spraying is improved.

In order to keep the interior of the limiting rod 7 and the upper channel 41 communicated with each other all the time and avoid the situation that the ball 6 is stuck on the limiting rod 7 during powder spraying, a bottom plate 71 for sealing the lower port of the limiting rod 7 is arranged on the limiting rod 7, an upwards-concave spherical arc surface 72 is arranged on the bottom plate 71 from the edge of the bottom plate, the radius of the spherical arc surface 72 is larger than that of the ball 6, a downwards-convex top bag 73 is arranged at the center of the top of the spherical arc surface 72, and a plurality of communicating holes 74 which are communicated with the limiting rod 7 and the upper channel 41 up and down are arranged on the bottom plate 71 around the outer side of the top bag 73.

The upper end of gag lever post 7 is equipped with side direction protrusion and roof pressure flange 75 in the upper end of valve rod 4, be equipped with the draw-in groove 46 of indent on the side of last passageway 41, thereby the side of gag lever post 7 is equipped with the buckle 76 that the buckle is in draw-in groove 46 and prevents that gag lever post 7 from deviating from valve rod 4, simple structure, the equipment is convenient, through gag lever post 7 joint with spheroid 6 restriction in valve rod 4 on valve rod 4, the three can form an independent whole, but the independent production equipment, thereby improve the packaging efficiency of whole type valve of dusting, and applicable in the valve of different models, thereby effectively reduce manufacturing cost.

In the embodiment shown in fig. 4, the valve rod 4 is provided with a step column 47 which is located below the sealing ring 3 and forms a step clamped below the sealing ring 3, a plurality of outward-protruding division bars 48 are arranged on the side surface of the step column 47 around the circumferential direction, and the division bars 48 have a gap with the inner wall of the valve chamber 2. The initial mixing of the gas and powder is made more efficient by the initial break-up and turbulence of the gas and powder by the dividing strips 48.

Claims

1. The utility model provides a dusting type valve which characterized in that: the valve comprises a sealing cup (1), a valve chamber (2) is fixed in the middle of the sealing cup (1), air inlets (21) communicated with the inside and the outside are formed in the side face of the valve chamber (2), a sealing ring (3) is arranged between the sealing cup (1) and an upper end opening of the valve chamber (2), a valve rod (4) penetrating through the sealing ring (3) is arranged in the valve chamber (2), a spring (5) used for upwards jacking the valve rod (4) is arranged in the valve chamber (2), a channel with an upper end opening and a lower end being closed is arranged on the valve rod (4), the channel consists of an upper channel (41) and a lower channel (42), an inlet (43) which can be blocked by the sealing ring (3) when the valve rod (4) is sprung and is exposed in the valve chamber (2) when the valve rod (4) is pressed down is arranged on the side wall of the lower channel (42), and the upper channel (41) is larger than the lower channel (42) and forms a stepped structure, the ball valve is characterized in that a conical part (44) which is in transitional connection with the upper channel (41) and the lower channel (42) is arranged between the upper channel (41) and the lower channel (42), a ball body (6) which can freely move in the upper channel (41) is arranged at the conical part (44), a limiting rod (7) which stretches into the upper channel (41) and limits the upward moving height of the ball body (6) is fixed at the upper end of the valve rod (4), the limiting rod (7) is hollow and is always communicated with the upper channel (41), and a side groove (45) which is concave towards the side face and can vertically communicate the upper channel (41) and the lower channel (42) when the ball body (6) falls on the upper face is arranged on the conical part (44).

2. A powder injection valve as claimed in claim 1, wherein: the upper passage (41) and the lower passage (42) are coaxial and circular in cross section, and the outer diameter of the sphere (6) is smaller than that of the upper passage (41) and larger than that of the lower passage (42).

3. A powder injection valve as claimed in claim 2, wherein: be equipped with on gag lever post (7) with its lower port confined bottom plate (71), bottom plate (71) are equipped with spherical cambered surface (72) of upwards indent from its edge, the radius of spherical cambered surface (72) is greater than spheroid (6) radius, the central point at spherical cambered surface (72) top puts and is equipped with downward convex top package (73), be equipped with a plurality of intercommunicating pores (74) that communicate gag lever post (7) and upper channel (41) from top to bottom around the outside of top package (73) on bottom plate (71).

4. A powder injection valve as claimed in claim 1, wherein: the upper end of the limiting rod (7) is provided with a flange edge (75) which protrudes laterally and is pressed against the upper end of the valve rod (4), the side surface of the upper channel (41) is provided with an inwards concave clamping groove (46), and the side surface of the limiting rod (7) is provided with a buckle (76) which is buckled in the clamping groove (46) so as to prevent the limiting rod (7) from being separated from the valve rod (4).

5. A powder injection valve as claimed in claim 1, wherein: the valve rod (4) is provided with a step column (47) which is positioned below the sealing ring (3) and forms a step clamped below the sealing ring (3), a plurality of outwards-protruding separation strips (48) are arranged on the side surface of the step column (47) in a circumferential direction, and a gap is reserved between the separation strips (48) and the inner wall of the valve chamber (2).

6. A powder injection valve as claimed in claim 1, wherein: the lower end of the valve chamber (2) is connected with a suction pipe (8).