A powder feeding device

Abstract

The present invention provides a powder feeding device, which includes a feeding housing. A feeding pipe is installed through the feeding housing. A first discharge port for discharging excess powder is formed on the top surface of the middle section of the feeding pipe. A spray pipe mechanism for blowing the excess powder out of the feeding pipe and a sealing mechanism for sealing the first discharge port are installed in the feeding housing. A power mechanism for actuating the sealing mechanism is installed on the front end face of the feeding housing. The sealing mechanism includes a sealing cover in an arc shape and closely attached to the top surface of the feeding pipe and a first support rod that can rotate axially. The connecting end of the sealing cover is movably sleeved outside the first support rod. An opening cover sleeve is threadedly sleeved on the support rod. One end of the opening cover sleeve is movably connected to one end of an opening cover rod, and the other end is movably connected to the top surface of the sealing cover. The present invention can enable a single transportation scraper to carry an appropriate amount of powder during the pipe chain transportation mode, so as to avoid jamming or damage during the movement of the pipe chain.

Description

Technical Field

[0001] The present invention relates to the technical field of powder tube chain transportation, and particularly relates to a powder feeding device. Background Art

[0002] In the prior art, during the powder processing process, the powder is usually transported by means of tube chain transportation. That is, a feeding device is used to load the powder into the transportation tube, and the scraper on the tube chain in the transportation tube drives an appropriate amount of powder to move in the transportation tube to achieve the transportation of the powder. However, in actual use, the amount of powder transported by each scraper cannot be controlled. If the amount of powder transported by a single scraper is too much, the friction between the powder and the inside of the transportation tube is too large, which easily causes the tube chain to get stuck, and the scraper and the corresponding connecting parts bear too much tensile force, easily resulting in the tube chain being pulled off. Summary of the Invention

[0003] In view of this, the problem to be solved by the present invention is to provide a powder feeding device that can enable a single transportation scraper to carry an appropriate amount of powder to avoid jamming or damage during the movement of the tube chain.

[0004] To solve the above technical problems, the technical solution adopted by the present invention is:

[0005] A powder feeding device includes a feeding housing, a feeding tube is installed through the feeding housing, a first discharge port for discharging excess powder is opened on the top surface of the middle section of the feeding tube, a spray tube mechanism for blowing the excess powder out of the feeding tube and a sealing mechanism for sealing the first discharge port are installed in the feeding housing, and a power mechanism for actuating the sealing mechanism is installed on the front end surface of the feeding housing;

[0006] The sealing mechanism includes a sealing cover in an arc shape and closely attached to the top surface of the feeding tube and a first support rod that can rotate axially. The connecting end of the sealing cover is movably sleeved outside the first support rod, an opening cover sleeve is threadedly sleeved on the support rod, one end of the opening cover sleeve is movably connected to one end of an opening cover rod, and the other end is movably connected to the top surface of the sealing cover.

[0007] Further, both ends of the opening cover rod are movably connected to the sealing cover and the opening cover sleeve through universal joints.

[0008] Further, the spray tube mechanism includes a powder removing spray tube, one end of the powder removing spray tube is movably connected to the feeding housing, and the other outlet end groove faces the first discharge port;

[0009] A positioning sleeve for horizontally rotating the powder removing spray tube is movably installed on the outer wall of the opening cover sleeve, and the positioning sleeve is movably sleeved on the middle section of the powder removing spray tube.

[0010] Further, one end of the first support rod extends out of the front end surface of the feeding housing, and the power mechanism includes a driving cylinder;

[0011] A rack is installed at the extending end of the driving cylinder, a gear is installed at the extending end of the first support rod, and the rack meshes with the gear.

[0012] Furthermore, the power mechanism includes a mounting frame. A first mounting plate for connecting with the driving cylinder is arranged at the upper end of the mounting, and a second mounting plate is arranged at the left end of the mounting frame;

[0013] An air pipe mounting hole and a sliding hole for installing an air pipe are formed in the second mounting plate. The middle section of a connecting ear is clamped in the sliding hole. One end of the connecting ear is fixedly connected with the rack, and the other end is fixedly connected with the extending end of the driving cylinder.

[0014] Furthermore, a sensor for detecting the powder transportation volume is hermetically and fixedly installed on the top surface of the input end of the material distribution pipe.

[0015] Furthermore, a second discharge port is formed in the side wall at the lower end of the material distribution shell, and the ground of the material distribution shell is inclined.

[0016] Furthermore, a right-handed thread and a left-handed thread are formed on the first support rod, and the cover opening sleeve includes a right-handed sleeve and a left-handed sleeve;

[0017] The right-handed sleeve and the left-handed sleeve are respectively sleeved outside the right-handed thread and the left-handed thread. Both the right-handed sleeve and the left-handed sleeve are movably connected with both ends of the sealing cover through cover opening rods.

[0018] Furthermore, a spare spray pipe with the same installation method as the powder removal spray pipe is installed in the material distribution shell. The middle sections of the powder removal spray pipe and the spare spray pipe are respectively sleeved in the positioning sleeves below the right-handed sleeve and the left-handed sleeve.

[0019] Furthermore, the first discharge port is of a trapezoidal structure.

[0020] The advantages and positive effects of the present invention are:

[0021] (1) By connecting a material distribution device to the transportation pipe of the tube chain transportation, when the sensor detects that the powder carried by the transportation scraper in the transportation pipe is excessive, the power mechanism is activated to rotate the first support rod. The first support rod rotates the sealing cover forward through the cover opening sleeve and the cover opening rod, exposing the first discharge port. The spray pipe mechanism blows the excess powder carried by the transportation scraper into the material distribution shell, so that each transportation scraper carries an appropriate amount of powder, avoiding jamming or damage during the movement of the tube chain.

[0022] (2) The material distribution device is used to blow out the powder of the material distribution scraper. By controlling the air volume of the gas blown out by the spray pipe mechanism, the spray pipe mechanism blows out all the powder carried by the transportation scraper every other transportation scraper, playing the role of powder diversion. Description of the Drawings

[0023] The accompanying drawings are used to provide a further understanding of the present invention, and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention, but do not constitute a limitation to the present invention. In the accompanying drawings:

[0024] Figure 1 is the front view of a powder feeding device of the present invention;

[0025] Figure 2 is the front sectional view of a powder feeding device of the present invention;

[0026] Figure 3 is the top view of a powder feeding device of the present invention;

[0027] Figure 4 is the top view of the powder feeding pipe of a powder feeding device of the present invention;

[0028] Figure 5 is Figure 1 the enlarged schematic view of part A in

[0029] In the figures: 1, powder feeding shell; 101, second discharge port; 2, powder feeding pipe; 201, first discharge port; 3, power mechanism; 301, mounting rack; 302, gear; 303, rack; 304, driving cylinder; 3041, threaded connecting pipe; 305, air pipe; 4, sealing mechanism; 401, first support rod; 402, cover opening sleeve; 403, cover opening rod; 404, sealing cover; 5, spray pipe mechanism; 501, powder removing spray pipe; 5011, spare spray pipe; 502, positioning sleeve; 6, pipe chain; 601, transport scraper. Detailed Embodiments

[0030] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0031] It should be noted that when a component is referred to as being "fixed to" another component, it can be directly on the other component or there may also be an intermediate component. When a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be an intermediate component at the same time. When a component is considered to be "disposed on" another component, it can be directly disposed on the other component or there may be an intermediate component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are only for the purpose of illustration.

[0032] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field to which this invention belongs. The terms used in the description of this invention herein are for the purpose of describing specific embodiments only and are not intended to limit the invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0033] The present invention provides a powder feeding device. As Figures 1 to 2 shown, the feeding device is usually installed at the rear end of the feeding device. The feeding device loads the powder into the transport pipe. An axially movable pipe chain 6 is installed in the transport pipe, and transport scrapers 601 in the form of discs are installed at intervals on the pipe chain 6. When transporting the powder, the pipe chain 6 moves axially, and the transport scraper 601 pushes an appropriate amount of powder to move in the transport pipeline.

[0034] If too much powder is pushed by a certain transport scraper 601, when passing through the feeding device, the feeding device blows out the excessive powder to prevent the pipe chain 6 from getting stuck or damaged during subsequent movement due to uneven amounts of powder carried by the transport scraper 601.

[0035] The feeding device includes a feeding housing 1, and a feeding pipe 2 is installed through the feeding housing 1 (both ends of the feeding pipe 2 extend out of the front and rear end faces of the feeding housing 1). When installing the feeding device, the two ends of the feeding pipe 2 are connected to the transport pipe to connect the feeding device to the transport pipe. As Figure 3 shown, a sensor 202 is fixedly installed in a sealed manner on the top surface of the input end of the feeding pipe 2. The output end of the sensor 202 is connected to a host computer, and the host computer receives the data obtained by the sensor 202 for feedback and controls the feeding device to blow out the powder.

[0036] As Figure 4 shown, a first discharge port 201 starts from the top surface of the middle section of the feeding pipe 2. A spray pipe mechanism 5 is installed in the feeding housing 1. The spray pipe mechanism 5 includes a powder-removing spray pipe 501 that can blow out gas, and the outlet end of the powder-removing spray pipe 501 is arranged facing the first discharge port 201. When the powder-removing spray pipe 501 works, gas is blown out from the outlet end, and the gas enters the feeding pipe 2 from the first discharge port 201, blowing out the excessive powder in the feeding pipe 2 from the first discharge port 201 and falling into the feeding housing 1.

[0037] A second discharge port 101 is installed on the side wall at the lower end of the feeding housing 1, and the second discharge port 101 is used to connect to an external device. When the external device is a feeding device, the blown-out powder returns to the feeding device for secondary feeding, and at this time the feeding device functions to discharge the excess powder; when the external device is another transport pipe, the blown-out powder enters another transport pipe for dual-channel transportation, and at this time the feeding device functions to divert. To facilitate the powder to discharge from the second discharge port 101 by itself, the bottom surface of the feeding housing 1 is inclined.

[0038] As shown Figure 3 in the figure, a sealing mechanism 4 is installed in the material distribution housing 1. When it is not necessary to discharge excessive powder, the sealing mechanism 4 is used to seal the first discharge port 201 to enable the powder to be sealed during transportation. When it is necessary to discharge excessive powder, the sealing mechanism 4 can expose the first discharge port 201 to facilitate the powder removal spray pipe 501 to blow out the powder in the material distribution pipe 2.

[0039] The sealing mechanism 4 includes a sealing cover 404. The sealing cover 404 has an arc structure and is closely attached to the top surface of the material distribution pipe 2 without affecting the normal movement of the pipe chain 6. The sealing mechanism 4 includes a first support rod 401. The first support rod 401 is movably installed on the inner wall of the material distribution housing 1 to support the first support rod 401 at a certain height. The connecting end of the sealing cover 404 is movably connected to the first support rod 401 to facilitate the sealing cover 404 to rotate around the axis of the first support rod 401.

[0040] A cover opening sleeve 402 is threadedly sleeved on the first support rod 401. One end of an opening rod 403 is movably connected to the outer side wall of the cover opening sleeve 402, and the other end of the opening rod 403 is movably connected to the outer side wall of the sealing cover 404. During operation, when the first support rod 401 rotates forward along the axis, the cover opening sleeve 402 moves along the axis direction of the first support rod 401, and the opening rod 403 drives the sealing cover 404 to rotate forward to expose the first discharge port 201; when the first support rod 401 rotates reversely along the axis, the sealing cover 404 rotates reversely to cover the first discharge port 201. Preferably, both ends of the opening rod 403 are movably connected to the driving sleeve and the sealing cover 404 through universal joints.

[0041] To enable the sealing cover 404 to rotate smoothly, a positive thread section and a reverse thread section are provided on the first support rod 401. Similarly, the cover opening sleeve 402 includes a positive sleeve and a reverse sleeve, and the opening rod 403 includes a positive cover rod and a reverse cover rod. The positive sleeve is threadedly sleeved on the outside of the positive thread section, the reverse sleeve is threadedly sleeved on the outside of the reverse thread section, and the ends of the positive cover rod and the reverse cover rod far away from the cover opening sleeve 402 are respectively movably installed at both ends of the sealing cover 404.

[0042] The connecting end of the powder removal spray pipe 501 is movably installed on the side wall of the material distribution housing 1 to facilitate the horizontal rotation of the powder removal spray pipe 501. At the same time, a positioning sleeve 502 is movably installed on the outer wall of the cover opening sleeve 402. The positioning sleeve 502 is movably sleeved on the middle section of the powder removal spray pipe 501. When the cover opening sleeve 402 moves along the axis of the first support rod 401, it can drive the powder removal spray pipe 501 to rotate horizontally together, so that the outlet end of the powder removal spray pipe 501 can move along with the transportation scraper 601, effectively removing the excessive powder carried by a certain transportation scraper 601, and can also specifically remove the powder carried by a certain transportation scraper 601.

[0043] To ensure the efficiency of the powder removal by the nozzle mechanism 5, a spare nozzle 5011 is installed inside the material distribution shell 1, and the installation method of the spare nozzle 5011 is the same as that of the powder removal nozzle 501. The powder removal nozzle 501 is sleeved inside the positioning sleeve 502 outside the positive sleeve, and the spare nozzle 5011 is sleeved inside the positioning sleeve 502 outside the reverse sleeve. Taking Figure 3 as an example, when the first support rod 401 rotates forward, the positive sleeve and the powder removal nozzle 501 move horizontally to the right together, and the reverse sleeve and the spare nozzle 5011 move horizontally to the left together (the positive sleeve and the reverse sleeve approach each other, and the powder removal nozzle 501 and the spare nozzle 5011 approach each other), the sealing cover 404 opens smoothly. At the same time, the pipe chain 6 moves to the right, and the outlet end of the powder removal nozzle 501 moves to the right along with the transportation push plate. The powder removal nozzle 501 can remove the powder pushed by one transportation push plate.

[0044] After the sealing cover 404 is fully opened, the powder removal nozzle 501 stops blowing air. If it is found that the powder carried by this transportation push plate is still excessive, the outlet end of the spare nozzle 5011 starts to jet air. At the same time, the first support rod 401 rotates reversely, and the jet orifice of the spare nozzle 5011 moves to the right along with the transportation push plate to remove the powder carried by this transportation push plate. To match the moving paths of the outlet ends of the powder removal nozzle 501 and the spare nozzle 5011, the first discharge port 201 is set as a trapezoidal structure, which not only ensures the efficiency of the powder blown out by the powder removal nozzle 501 and the spare nozzle 5011, but also avoids the area of the first discharge port 201 being too large, resulting in too much powder being blown out and affecting the transmission efficiency.

[0045] As Figure 1 shown in Figure 5 and

[0046] A power mechanism 3 is installed on the front end face of the material distribution shell 1. The power mechanism 3 is used to rotate the first support rod 401. The power mechanism 3 includes a driving cylinder 304. The driving cylinder 304 is fixedly installed on the front end face of the material distribution shell 1. A rack 303 is installed at the connecting end of the single rod of the driving cylinder 304. A gear 302 is fixedly installed on a section of the first support rod 401 extending out of the front end face of the material shell. The gear 302 meshes with the rack 303. The single rod of the driving cylinder 304 drives the rack 303 to reciprocate, and the rack 303 makes the first support rod 401 rotate forward or reversely through the gear 302.On the front end face of the material distribution housing 1, a mounting bracket 301 for stably driving the air cylinder 304 and the rack 303 is fixedly installed. The mounting bracket 301 is vertically installed. At the upper end of the mounting bracket 301, there is a first mounting plate for fixedly connecting with the upper end of the driving air cylinder 304. At the left end of the mounting bracket 301, there is a second mounting plate, and the second mounting plate is located between the gear 302 and the driving air cylinder 304. The second mounting plate is provided with a mounting hole and a sliding hole for installing the air pipe 305. At the same time, a connecting ear is fixedly installed on the back surface of the rack 303, and the connecting ear passes through the sliding hole and is connected to the single rod of the driving air cylinder 304. When the single rod reciprocates, the back surface of the rack 303 closely adheres to the second mounting plate and moves up and down smoothly.

[0047] One side of the driving air cylinder 304 opposite to the second mounting plate is the air pipe 305 connection surface (the air pipe 305 is connected to an air pump to input gas into the driving air cylinder 304). The air pipe 305 is connected to the driving air cylinder 304 through a threaded pipe joint 3041. A boss is added on the threaded pipe joint 3041 to fixedly connect the driving air cylinder 304 and the second mounting plate, further improving the installation stability of the driving air cylinder 304.

[0048] When the transportation push plate moves with the powder, the powder will accumulate on the working surface of the transportation push plate, forming a sloped powder pile. Preferably, the sensor 202 is a distance sensor. The powder pile passes under the distance sensor, and the distance sensor records the distance from the top of the powder pile to the sensor, which is not uploaded to the upper computer in real time. When the transportation push plate is under the distance sensor, the distance of the sensor is zero, which is counted as zero data.

[0049] The upper computer receives the data of the distance sensor. Taking two adjacent zero numbers as a cycle, it records and generates the contour data of the powder pile in real time, extracts the peak value of the contour data (the height of the vertex of the powder pile), and judges whether the peak value exceeds the set threshold. If it does not exceed the threshold, it is determined that the powder carried by the transportation push plate is not excessive, and the material distribution device does not act; if it exceeds the set threshold, it is determined that the powder carried by the transportation push plate is excessive, and the upper computer turns on the air pump to make the driving air cylinder 304 and the powder removal spray pipe 501 act to remove some of the powder carried by the push plate.

[0050] The working principle and process of the present invention are as follows:

[0051] The feeding device loads the powder into the transportation pipe. When the pipe chain 6 in the transportation pipe moves the powder to the right and enters the material distribution pipe 2, the sensor 202 obtains the distance from the top of the powder pile to the sensor and uploads it to the upper computer in real time. The upper computer determines whether the powder carried in the transportation push plate is excessive.

[0052] If it is determined to be yes, the driving cylinder 304 and the powder removal spray pipe 501 are activated. The single rod extends and drives the rack 303 to move downward. The rack 303 makes the first support rod 401 rotate forward through the gear 302. The positive sleeve and the reverse sleeve approach each other, and the sealing cover 404 slowly opens to expose the first discharge port 201. The positive sleeve and the reverse sleeve drive the powder removal spray pipe 501 and the spare spray pipe 5011 to approach each other. The outlet end of the powder removal spray pipe 501 moves to the right together with the transportation push plate, continuously blowing the powder carried by the transportation push plate into the material distribution shell 1.

[0053] After the single rod extends completely, it retracts. At the same time, the powder removal spray pipe 501 is closed and the spare spray pipe 5011 is opened (if it functions as a shunt, the spare spray pipe 5011 continues to be opened). During the movement of the spare spray pipe 5011 to the right, the powder carried by the transportation push plate is continuously blown into the material distribution shell 1. When the single rod retracts completely, the spare spray pipe 5011 is closed, and the sealing cover 404 seals the first discharge port 201. The powder in the material distribution shell 1 is discharged from the second discharge port 101.

[0054] The powder removal spray pipe 501 is in the closed state during the process of returning to its original position, that is, the powder carried by a transportation push plate will not be blown out during this process. It functions as a shunt when the feeding device operates continuously.

[0055] The above has described the embodiments of the present invention in detail, but the content described is only the preferred embodiments of the present invention and cannot be considered as limiting the scope of implementation of the present invention. Any equivalent changes and improvements made within the scope of the present invention should still fall within the scope covered by this patent.

Claims

1. A powder feeding device, characterized in that, it includes a feeding housing (1), a feeding pipe (2) is installed through the feeding housing (1), a first discharge port (201) for discharging excess powder is opened on the top surface of the middle section of the feeding pipe (2), a spray pipe mechanism (5) for blowing the excess powder out of the feeding pipe (2) and a sealing mechanism (4) for sealing the first discharge port (201) are installed in the feeding housing (1), and a power mechanism (3) for actuating the sealing mechanism (4) is installed on the front end surface of the feeding housing (1); The sealing mechanism (4) includes a sealing cover (404) in an arc shape and closely attached to the top surface of the feeding pipe (2) and a first support rod (401) that can rotate axially. The connecting end of the sealing cover (404) is movably sleeved outside the first support rod (401). An opening cover sleeve (402) is threadedly sleeved on the first support rod (401). One end of the opening cover sleeve (402) is movably connected to one end of an opening cover rod (403), and the other end is movably connected to the top surface of the sealing cover (404).

2. The powder feeding device according to claim 1, characterized in that, both ends of the opening cover rod (403) are movably connected to the sealing cover (404) and the opening cover sleeve (402) through universal joints.

3. The powder feeding device according to claim 1, characterized in that, the spray pipe mechanism (5) includes a powder removing spray pipe (501). One end of the powder removing spray pipe (501) is movably connected to the feeding housing (1), and the other outlet end groove is arranged towards the first discharge port (201); A positioning sleeve (502) for horizontally rotating the powder removing spray pipe (501) is movably installed on the outer wall of the opening cover sleeve (402). The positioning sleeve (502) is movably sleeved on the middle section of the powder removing spray pipe (501).

4. The powder feeding device according to claim 1, characterized in that, one end of the first support rod (401) extends out of the front end surface of the feeding housing (1). The power mechanism (3) includes a driving cylinder (304); A rack (303) is installed at the extending end of the driving cylinder (304). A gear (302) is installed at the extending end of the first support rod (401). The rack (303) is meshed with the gear (302).

5. The powder feeding device according to claim 4, characterized in that, the power mechanism (3) includes a mounting frame (301). A first mounting plate for fixedly connecting to the upper end of the driving cylinder (304) is arranged at the upper end of the mounting. A second mounting plate is arranged at the left end of the mounting frame (301); An installation hole and a sliding hole for installing an air pipe (305) are opened on the second mounting plate. The middle section of a connecting ear is clamped in the sliding hole. One end of the connecting ear is fixedly connected to the rack (303), and the other end is fixedly connected to the extending rod of the driving cylinder (304).

6. The powder feeding device according to claim 1, characterized in that, a sensor (202) for detecting the powder transportation amount is fixedly installed in a sealed manner on the top surface of the input end of the feeding pipe (2).

7. The powder feeding device according to claim 1, It is characterized in that a second discharge port (101) for connecting with an external device is formed in the side wall at the lower end of the material distribution shell (1), and the bottom surface of the material distribution shell (1) is inclined 8. A powder material distribution device according to any one of claims 1 to 7 It is characterized in that a right-handed thread and a left-handed thread are formed on the first support rod (401), and the cover opening sleeve (402) includes a right sleeve and a left sleeve the right sleeve and the left sleeve are respectively sleeved outside the right-handed thread and the left-handed thread, and both the right sleeve and the left sleeve are movably connected to both ends of the sealing cover (404) through an opening cover rod (403).

9. A powder material distribution device according to claim 8 It is characterized in that a spare spray pipe (5011) with the same installation method as the powder removing spray pipe (501) is installed in the material distribution shell (1), and the middle sections of the powder removing spray pipe (501) and the spare spray pipe (5011) are respectively sleeved in the positioning sleeves (502) below the right sleeve and the left sleeve 10. A powder material distribution device according to claim 8 It is characterized in that the first discharge port (201) is of a trapezoidal structure

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