CN111926210B

CN111926210B - Powder spraying device with pressure relief function and capable of accurately controlling spraying quantity

Info

Publication number: CN111926210B
Application number: CN202010792633.6A
Authority: CN
Inventors: 严维燕
Original assignee: Individual
Current assignee: Individual
Priority date: 2020-08-09
Filing date: 2020-08-09
Publication date: 2022-02-11
Anticipated expiration: 2040-08-09
Also published as: CN111926210A

Abstract

The invention discloses a powder spraying device with a pressure relief function and capable of accurately controlling spraying quantity, which comprises a base, wherein the middle part of the base is provided with a partition part, and the inside of the base is divided into a bin and a mixing bin; a blanking port is arranged in the dividing part and is connected with a stock bin and a mixing bin; a slot is arranged in the dividing part in the horizontal direction, a sliding quantitative baffle is arranged in the slot, and a quantitative opening is formed in the sliding quantitative baffle; the tail end of the sliding quantitative baffle is provided with a pull rod; a high-pressure air inlet pipe is arranged on the side edge of the mixing bin, the high-pressure air inlet pipe is connected with an air distribution part, the air distribution part is provided with an air injection pipe and a constant pressure pipe, the air injection pipe is inserted into the mixing bin, and the constant pressure pipe is connected with the top of the bin; the side of the mixing bin is provided with an aluminum liquid pool, the mixing bin is provided with a stretched graphite pipe, and the graphite pipe is inserted into the aluminum liquid pool. The invention can quickly and accurately control the ejection quantity of the refining agent and ensure the continuous and stable concentration of the ejected gas-powder mixture; in the event of a blockage of the spray bar, the delivery of the refining agent can be suspended.

Description

Powder spraying device with pressure relief function and capable of accurately controlling spraying quantity

Technical Field

The invention relates to a powder spraying device with a pressure relief function and capable of accurately controlling a spraying amount.

Background

The refining agent is white powder or granular flux, is prepared by mixing a plurality of inorganic salts according to a certain proportion after drying treatment, and is mainly used for removing hydrogen and floating oxidation slag inclusion in molten aluminum.

In the aluminum alloy refining process, a powder spraying device is needed for carrying out powder spraying operation on a refining agent, however, the powder spraying device in the prior art has the following defects: the conveying capacity of the refining agent is difficult to adjust in time according to the front spraying condition, the concentration of the sprayed gas-powder mixture cannot be conveniently adjusted according to needs, and the concentration of the sprayed gas-powder mixture cannot be ensured to be continuous and stable; when the graphite pipe or the spray rod is completely blocked, the refining agent conveying mechanism may not obtain a feedback signal in time and is still conveying continuously, so that the refining agent inside the whole pipeline is excessively accumulated and is difficult to clean; the conveying speed of the refining agent may be related to the amount of refining agent in the vessel, and the conveying speed of the refining agent may not be uniform. When the refining agent in the container is more, the weight is larger, and the conveying speed is relatively high; and the weight is smaller and the conveying speed is relatively low when the refining agent in the container is less.

Disclosure of Invention

The invention aims to provide a powder spraying device with a pressure relief function and capable of accurately controlling the spraying amount, which can quickly and accurately control the spraying amount of a refining agent and ensure that the concentration of a sprayed gas-powder mixture is continuously and stably; in the event of a blockage of the spray bar, the air pressure can be removed, halting the delivery of the refining agent.

In order to achieve the purpose, the invention provides the following technical scheme: a powder spraying device with a pressure relief function and capable of accurately controlling spraying quantity comprises a base, wherein a partition part is arranged in the middle of the base and divides the inner space of the base into an upper storage bin and a lower mixing bin; a blanking port with a square cross section is vertically arranged in the dividing part and is connected with the stock bin and the mixing bin; a slot is arranged in the dividing part in the horizontal direction, a sliding quantitative baffle is arranged in the slot in a sliding manner, a quantitative opening with a square cross section is arranged on the sliding quantitative baffle, and the opening area of the quantitative opening is not smaller than that of the blanking opening; the tail end of the sliding quantitative baffle is provided with a pull rod, and the position of the sliding quantitative baffle in the slot can be adjusted through the pull rod, so that the quantitative port and the blanking port are completely overlapped from non-overlapping to complete overlapping, and the flow is adjusted; a high-pressure air inlet pipe is arranged on the side edge of the mixing bin, the high-pressure air inlet pipe is connected with an air distribution part, the air distribution part is provided with an air injection pipe and a constant pressure pipe, the air injection pipe is inserted into the mixing bin, and the constant pressure pipe is connected with the top of the bin; an aluminum liquid pool is arranged on the other side of the mixing bin, the mixing bin is provided with a protruded graphite pipe, and the graphite pipe is inserted into aluminum liquid in the aluminum liquid pool to provide a refining agent for the aluminum liquid.

In the above technical solution, preferably, the mixing bin is provided with an inclined bottom surface, a pressure relief bin is arranged below the mixing bin, the pressure relief bin is connected with a temporary storage bin, the inclined bottom surface is provided with a pressure relief opening, the pressure relief opening is provided with a convex blocking head, a spring is arranged at the bottom of the blocking head, and the spring pushes the blocking head against the pressure relief opening; the side wall of the pressure relief bin is provided with a pressure relief pipe, and the pressure relief pipe extends out of the pressure relief bin and is provided with a pressure relief valve at the end part.

In the above technical scheme, preferably, the protruding portion of the plugging head enters the pressure relief opening, the base plate of the plugging head presses the side edge below the pressure relief opening to form a sealing effect, and the upper surface of the base plate of the plugging head is covered with the sealing gasket.

In the above technical solution, preferably, the spring pushes the plugging head against the pressure relief opening, and bears the air pressure in the mixing bin during normal operation, so as to keep the plugging head in place; the graphite pipe leads to the atmospheric pressure in the mixing bin to rise after blocking, and high atmospheric pressure acts on the plugging head, thereby overcoming the spring force effect and making the plugging head move, and communicating the pressure relief bin with the mixing bin.

In the above technical solution, preferably, the inner end wall of the graphite tube is connected to the lowest surface of the inclined bottom surface.

Among the above-mentioned technical scheme, preferably, the feed bin top is provided with the roof, be provided with agitator motor on the roof, agitator motor is connected with the stirring rod, the stirring rod is provided with from last to having set gradually wave form stirring arm and a plurality of horizontal stirring arm down, the stirring rod bottom is close to blanking mouth department is provided with down oblique stirring arm.

In the above technical scheme, preferably, the cross-sectional shape of the storage bin is in the shape of an inverted gourd, and the storage bin comprises a material storage part above and a material discharge part below, the waveform stirring arm is located in the material storage part, and the transverse stirring arm and the downward inclined stirring arm are located in the material discharge part.

In the above technical solution, preferably, the end of the downward-inclined stirring arm is provided with a downward bending portion, so that the auxiliary powder moves downward when rotating; the length of the transverse stirring arm is gradually shortened from top to bottom, and the end part of the transverse stirring arm is provided with an upward bent part, so that powder is stirred to be loosened during rotation.

Among the above-mentioned technical scheme, preferably, the feed bin top is provided with the charge door, the sealed reinforced apron that is provided with the ability of opening on the charge door.

In the above technical solution, preferably, a distance measuring probe is disposed at an inner end of the slot, and the distance measuring probe is configured to detect a distance from an end surface of the sliding quantitative baffle to the end surface, so as to calculate a movement amount of the sliding quantitative baffle, thereby determining an opening degree of the blanking port.

The invention provides a powder spraying device with a pressure relief function and capable of accurately controlling the spraying amount, which can quickly and accurately control the spraying amount of a refining agent and ensure that the concentration of sprayed gas-powder mixture is continuously and stably; in the event of a blockage of the spray bar, the air pressure can be removed, halting the delivery of the refining agent.

Drawings

FIG. 1 is a schematic view of the structure of the present invention.

FIG. 2 is a schematic view of the structure of the sliding quantitative baffle of the present invention.

FIG. 3 is a schematic structural diagram of the structural dividing part according to the present invention.

FIG. 4 is a schematic view of a pressure relief chamber according to the present invention.

In the figure: 1 is a machine base, 11 is a partition part, 111 is a slot, 112 is a distance measuring probe, 12 is a top plate, 121 is a feeding port, and 13 is a feeding cover plate; 2 is a storage bin, 21 is a discharging part, 22 is a material storing part, and 23 is a blanking port; 3, a mixing bin, 31, a high-pressure air inlet pipe, 32, an air distributing part, 321, an air injection pipe, 322, a constant-pressure pipe and 33, wherein the mixing bin is a graphite pipe; 4, a stirring motor, 41, a stirring rod, 42, a waveform stirring arm, 43, a transverse stirring arm and 44, a downward inclined stirring arm; 5 is a sliding quantitative baffle, 51 is a quantitative opening, 52 is a pull rod, and 53 is an end surface; 6 is an aluminum liquid pool; 7 is a pressure relief bin, 71 is a blocking head, 72 is a spring, 73 is a pressure relief pipe, and 731 is a pressure relief valve; and 8 is a temporary storage bin.

Detailed Description

The technical solutions of the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is to be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments described herein without the need for inventive work, are within the scope of the present invention.

As shown in fig. 1 to 4, a powder spraying device with a pressure relief function and capable of accurately controlling a spraying amount comprises a base 1, wherein a dividing part 11 is arranged in the middle of the base 1, and the dividing part 11 divides the inner space of the base 1 into an upper bin 2 and a lower mixing bin 3; a blanking port 23 with a square cross section is vertically arranged in the dividing part 11, and the blanking port 23 is connected with the storage bin 2 and the mixing bin 3; a slot 111 is horizontally arranged in the dividing part 11, a sliding quantitative baffle 5 is arranged in the slot 111 in a sliding manner, the sliding quantitative baffle 5 is provided with a quantitative port 51 with a square cross section, and the opening area of the quantitative port 51 is not smaller than that of the blanking port 23; the tail end of the sliding quantitative baffle 5 is provided with a pull rod 52, and the position of the sliding quantitative baffle 5 in the slot 111 can be adjusted through the pull rod 52, so that the quantitative port 51 and the blanking port 23 are completely overlapped from non-overlapping to complete overlapping, and the flow rate is adjusted; a high-pressure air inlet pipe 31 is arranged on the side edge of the mixing bin 3, the high-pressure air inlet pipe 31 is connected with an air distribution part 32, the air distribution part 32 is provided with an air injection pipe 321 and a constant pressure pipe 322, the air injection pipe 321 is inserted into the mixing bin 3, and the constant pressure pipe 322 is connected with the top of the bin 2; an aluminum liquid pool 6 is arranged on the other side of the mixing bin 3, the mixing bin 3 is provided with a protruded graphite pipe 33, and the graphite pipe 33 is inserted into aluminum liquid in the aluminum liquid pool 6 to provide a refining agent for the aluminum liquid.

The mixing bin 3 is provided with an inclined bottom surface 35, a pressure relief bin 7 is arranged below the mixing bin 3, the pressure relief bin 7 is connected with a temporary storage bin 8, the inclined bottom surface 35 is provided with a pressure relief opening, the pressure relief opening is provided with a convex blocking head 71, the bottom of the blocking head 71 is provided with a spring 72, and the blocking head 71 is pushed against the pressure relief opening by the spring 72; the side wall of the pressure relief bin 7 is provided with a pressure relief pipe 73, and the pressure relief pipe 73 extends out of the pressure relief bin 7 and is provided with a pressure relief valve 731 at the end part.

The protruding part of the blocking head 71 enters the pressure relief opening, the bottom plate of the blocking head 71 presses the side edge below the pressure relief opening to form a sealing effect, and the upper surface of the bottom plate of the blocking head 71 is covered with a sealing gasket.

The spring 72 pushes the plugging head 71 against the pressure relief opening, bears the air pressure in the mixing bin 3 during normal operation and still keeps the plugging head 71 in place; after the graphite pipe 33 is blocked, the air pressure in the mixing bin 3 rises, and high air pressure acts on the blocking head 71, so that the blocking head 71 is moved by overcoming the elastic force of the spring 72, and the pressure relief bin 7 is communicated with the mixing bin 3.

The inner end wall of the graphite tube 33 is connected with the lowest surface of the inclined bottom surface 35. By the arrangement, after the high-pressure gas and the powder are mixed, most of the high-pressure gas can enter the graphite pipe 33 at the first time under the guiding action of the inclined bottom surface 35. While some of the powder that has not entered the graphite tube 33 at the first time can still enter the graphite tube 33 along the inclined bottom surface 35 under the action of the internal air pressure flow and the guidance of gravity.

2 tops in feed bin are provided with roof 12, be provided with agitator motor 4 on roof 12, agitator motor 4 is connected with stirring rod 41, stirring rod 41 is provided with from last to having set gradually wave form stirring arm 42 and a plurality of horizontal stirring arm 43 down, stirring rod 41 bottom is close to blanking mouth 23 department is provided with down-tilting stirring arm 44.

The section of the storage bin 2 is in an inverted gourd shape, the storage bin comprises a storage part 22 above and a discharge part 21 below, the waveform stirring arm 42 is positioned in the storage part 22, and the transverse stirring arm 43 and the downward inclined stirring arm 44 are positioned in the discharge part 21. The wave-shaped stirring arm 42 is positioned in the upper material storage part 22, and after the wave-shaped stirring arm is driven by the stirring motor to rotate, the wave-shaped stirring arm can generate the up-and-down action of regular circulation on the powder in the material storage part 22, so that the accumulated powder can be loosened and is convenient to move downwards.

The end of the downward inclined stirring arm 44 is provided with a downward bent part so as to assist the powder to move downwards when rotating; the length of the transverse stirring arm 43 is gradually shortened from top to bottom, and the end of the transverse stirring arm 43 is provided with an upward bent part, so that the powder is stirred to be loosened during rotation.

The top of the storage bin 2 is provided with a feed inlet 121, and an openable feed cover plate 13 is hermetically arranged on the feed inlet 121.

The inner end of the slot 111 is provided with a distance measuring probe 112, and the distance measuring probe 112 is used for detecting the distance from the end face 53 of the sliding quantitative baffle 5 to the end face, so as to calculate the movement amount of the sliding quantitative baffle 5, and determine the opening degree of the blanking port 23.

Referring to fig. 2, the total length of the sliding quantitative baffle of the device is L1+ L2+ L3, wherein: l2 is the length of the dosing port 51; l1 is the length of the front section of the dosing port 51; l3 is the length of the rear section of the metering orifice 51.

The depth of the slot 111 of the device is larger than the total length of the sliding quantitative baffle, and part of the pull rod 52 can be accommodated in the slot.

Referring to fig. 3, the length of the blanking opening 23 of the device is La, and the length of the slot 111 partially located at the front side of the blanking opening 23 is Lb.

In the device: l2 is more than or equal to La; lb is more than or equal to L2+ L1; l3 > La. And L3 > La + (Lb- (L2 + L1)).

Through the parameter setting, the device can smoothly and perfectly complete the work mission.

The pull rod 52 is arranged at the tail end of the sliding quantitative baffle 5 of the device, and the sliding of the sliding quantitative baffle 5 in the slot 111 can be controlled through the pull rod 52, so that the overlapping degree of the quantitative opening 51 and the blanking opening 23 is controlled, the actual opening and closing condition of the blanking opening 23 is finally controlled, and the flow regulation is realized. And the distance measuring probe 112 is matched to detect the movement of the end surface 53, so as to obtain movement data, and the actual opening and closing data of the blanking port 23 is calculated. When adjustment is needed, the precise control can be performed according to the data acquired by the ranging probe 112.

In addition, the moving power source of the pull rod 52 can be driven by an air cylinder or a hydraulic cylinder. Or a rack is arranged on the pull rod 52, the gear is matched with a motor to drive the gear to rotate, and the rack is meshed with the gear to drive the rack to move so as to control the pull rod 52 to move. It is also possible to make a thread on the pull rod 52, then to screw on the nut, to drive the nut in rotation by means of a motor and to display the displacement of the nut, thus moving the pull rod 52.

This device is connected with constant-pressure pipe 322 between feed bin 2 and mixing storehouse 3, and gas portion 32 is divided in the connection of constant-pressure pipe 322, and gas portion 32 is provided with a jet-propelled pipe 321 in addition and stretches into mixing storehouse 3. Set up like this and make the pressure differential between feed bin 2 and the mixing bin 3 not too big to guarantee that the powder can fall smoothly and get into mixing bin 3 in to carry out the gas-powder and mix.

This device has set up pressure release storehouse 7, and when the spray lance takes place to block up, also after graphite pipe 33 blocks up, the air pressure can rise in the mixing storehouse 3. High air pressure can apply pressure on the inner walls of the mixing bin 3, and acts on the blocking head 71, so that the blocking head 71 is moved against the elastic force of the spring 72, and the pressure relief bin 7 is communicated with the mixing bin 3. This allows the air pressure in the mixing chamber 3 to drop and, with the circulation of the air flow, a part of the powder falls into the decompression chamber 7 and into the temporary storage chamber 8.

In addition to being able to communicate with the mixing chamber 3 to provide additional space for pressure reduction, the pressure relief chamber 7 is provided with a pressure relief tube 73. The pressure relief pipe 73 extends out of the pressure relief chamber 7, and is provided with a pressure relief valve 731 at an end portion. When the air pressure is too large, the pressure release valve 731 can start to work, so that the air flow leaks from the pressure release valve 731, and thus the pressure release function can be realized. The powder falls into the temporary storage bin 8 due to the inclined bottom surface 35 and does not still fill the graphite tube 33. Therefore, the clogging effect can be alleviated.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are, therefore, to be considered in all respects as illustrative and not restrictive. The scope of the invention is indicated by the appended claims, rather than the foregoing description, and all changes that come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. The utility model provides a powder spray device with pressure release function and accurately control blowout volume which characterized in that: the device comprises a machine base (1), wherein a partition part (11) is arranged in the middle of the machine base (1), and the partition part (11) divides the inner space of the machine base (1) into an upper storage bin (2) and a lower mixing bin (3); a blanking port (23) with a square cross section is vertically arranged in the dividing part (11), and the blanking port (23) is connected with the stock bin (2) and the mixing bin (3); a slot (111) is arranged in the dividing part (11) in the horizontal direction, a sliding quantitative baffle (5) is arranged in the slot (111) in a sliding manner, the sliding quantitative baffle (5) is provided with a quantitative opening (51) with a square cross section, and the opening area of the quantitative opening (51) is not smaller than that of the blanking opening (23); the tail end of the sliding quantitative baffle (5) is provided with a pull rod (52), and the position of the sliding quantitative baffle (5) in the slot (111) can be adjusted through the pull rod (52), so that the quantitative port (51) and the blanking port (23) are overlapped from non-overlapping to complete overlapping, and the flow adjustment is realized; a high-pressure air inlet pipe (31) is arranged on the side edge of the mixing bin (3), the high-pressure air inlet pipe (31) is connected with an air distribution part (32), an air injection pipe (321) and a constant pressure pipe (322) are arranged on the air distribution part (32), the air injection pipe (321) is inserted into the mixing bin (3), and the constant pressure pipe (322) is connected with the top of the bin (2); an aluminum liquid pool (6) is arranged on the other side of the mixing bin (3), the mixing bin (3) is provided with a graphite pipe (33) which extends out, and the graphite pipe (33) is inserted into aluminum liquid in the aluminum liquid pool (6) to provide a refining agent for the aluminum liquid; the mixing bin (3) is provided with an inclined bottom surface (35), a pressure relief bin (7) is arranged below the mixing bin (3), the pressure relief bin (7) is connected with a temporary storage bin (8), the inclined bottom surface (35) is provided with a pressure relief opening, the pressure relief opening is provided with a convex blocking head (71), the bottom of the blocking head (71) is provided with a spring (72), and the spring (72) pushes the blocking head (71) against the pressure relief opening; the side wall of the pressure relief bin (7) is provided with a pressure relief pipe (73), and the pressure relief pipe (73) extends out of the pressure relief bin (7) and is provided with a pressure relief valve (731) at the end part.

2. A powder spraying device as claimed in claim 1, in which: the protruding part of the blocking head (71) enters the pressure relief opening, the bottom plate of the blocking head (71) presses the side edge below the pressure relief opening to form a sealing effect, and a sealing gasket covers the upper surface of the bottom plate of the blocking head (71).

3. A powder spraying device as claimed in claim 2, in which: the spring (72) pushes the blocking head (71) against the pressure relief opening, bears the air pressure in the mixing bin (3) during normal operation and keeps the blocking head (71) in place; after the graphite pipe (33) is blocked, air pressure in the mixing bin (3) rises, and high air pressure acts on the blocking head (71), so that the blocking head (71) is moved by overcoming the elastic action of the spring (72), and the pressure relief bin (7) is communicated with the mixing bin (3).

4. A powder spraying device as claimed in claim 3, in which: the inner end wall of the graphite tube (33) is connected with the lowest surface of the inclined bottom surface.

5. A powder spraying device as claimed in claim 1, in which: feed bin (2) top is provided with roof (12), be provided with agitator motor (4) on roof (12), agitator motor (4) are connected with stirring rod (41), stirring rod (41) are provided with from last to having set gradually wave form stirring arm (42) and a plurality of horizontal stirring arm (43) down, stirring rod (41) bottom is close to blanking mouth (23) department is provided with down-tilting stirring arm (44).

6. A powder spraying device as claimed in claim 5, in which: feed bin (2) cross sectional shape is the shape of falling calabash, and it includes stock portion (22) of top and ejection of compact portion (21) of below, wave form rabbling arm (42) are located in stock portion (22), horizontal rabbling arm (43) with down-tilting rabbling arm (44) are located in ejection of compact portion (21).

7. A powder spraying device as claimed in claim 6, in which: the end part of the downward inclined stirring arm (44) is provided with a downward bent part so as to assist the powder to move downwards when rotating; the length of the transverse stirring arm (43) is gradually shortened from top to bottom, and the end part of the transverse stirring arm (43) is provided with an upward bent part, so that powder is stirred to be loosened during rotation.

8. A powder spraying device as claimed in claim 6, in which: feed bin (2) top is provided with charge door (121), sealed reinforced apron (13) that are provided with to open on feed door (121).

9. A powder spraying device as claimed in claim 1, in which: the distance measuring probe (112) is arranged at the inner end part of the slot (111), and the distance measuring probe (112) is used for detecting the distance between the end face (53) of the sliding quantitative baffle (5) and the distance measuring probe, so that the moving amount of the sliding quantitative baffle (5) is calculated, and the opening degree of the blanking port (23) is determined.