A jet-assisted loading device

Abstract

The utility model discloses a kind of jet power-assisted feeding devices, comprising: turnover bin, feeding bin, feeding pipe and high-pressure power-assisted air gun, the turnover bin is installed in the top of the feeding bin, the bottom of the feeding bin is equipped with discharging cover, the lower edge of the bin wall of the front of the feeding bin is equipped with horizontal discharge port, the horizontal discharge port is connected with feeding pipe, the bin wall on the back of the feeding bin is equipped with high-pressure power-assisted air gun, and the high-pressure power-assisted air gun comprises barrel, switchable air nozzle and gas pipe joint, the gas pipe joint is arranged at the tail of the barrel, the gas pipe joint is connected with high-pressure gas pipe, the top end of the barrel passes through the bin wall on the back of the feeding bin and enters the bin, the switchable air nozzle is installed at the top end of the barrel, and the gas outlet direction of the switchable air nozzle is aligned with the center of the horizontal discharge port. By the above-mentioned mode, the utility model can improve the stability of conveying low-density granular material.

Description

Technical Field

[0001] This utility model relates to the field of packaging machinery, and in particular to a jet-assisted feeding device. Background Technology

[0002] Some lightweight granular materials are prone to flying around due to their small mass and air agitation during the feeding and packaging process. Therefore, horizontal feeding is usually used instead of the conventional vertical feeding. When feeding horizontally, a screw feeder is usually added to the feeding pipe, and the screw's spiral motion completes the feeding action. However, in actual use, it has been found that because the material itself is lightweight and the particles are small, the friction between the particles is relatively large compared to the mass of the particles themselves. After the horizontally placed screw feeder is started, it is easy to form a void structure on the outside of the feed end, resulting in intermittent discharge and low efficiency. Utility Model Content

[0003] The main technical problem solved by this utility model is to provide a feeding device that can improve the stability of feeding low-density small particle materials into the packaging chamber.

[0004] To solve the above-mentioned technical problems, the present invention provides a jet-assisted feeding device, comprising: a turnover bin, a feeding bin, a feeding pipe, and a high-pressure assisted air gun. The turnover bin is installed directly above the feeding bin, and the bottom of the turnover bin is connected to the top of the feeding bin. The bottom of the feeding bin is provided with a discharge cover. A horizontal discharge port is provided along the lower edge of the front wall of the feeding bin, and the feeding pipe is connected to the external side of the horizontal discharge port. A high-pressure assisted air gun is installed on the back wall of the feeding bin. The high-pressure assisted air gun includes a barrel, a switchable nozzle, and an air pipe connector. The air pipe connector is located at the tail of the barrel and is connected to a high-pressure air pipe. The top of the barrel passes through the back wall of the feeding bin and enters the bin. The switchable nozzle is installed at the top of the barrel, and the air outlet direction of the switchable nozzle is aligned with the center of the horizontal discharge port.

[0005] In a preferred embodiment of this utility model, window frames are provided on the side and back walls of the feeding hopper and on the discharge cover. Each window frame contains a window panel. Each window frame has a stepped structure and is surrounded by bolt through holes. Each window panel includes a sintered metal baffle, a sealant layer, and a fluidizing plate. The shape of the sintered metal baffle is clearance-fitted to the shape of the corresponding window frame. The fluidizing plate has a larger area than the sintered metal baffle and a similar outline. The fluidizing plate and the sintered metal baffle are concentrically fixed together by multiple connecting bolts. The sealant... A ring is positioned between the sintered metal baffle and the fluidizing plate, with its outer ring contour coinciding with the contour of the fluidizing plate and its inner ring contour smaller than that of the sintered metal baffle. The fluidizing plate has mounting holes corresponding to the bolt through holes around the corresponding window frame. During window installation, the sintered metal baffle is embedded within the corresponding window frame. Multiple fastening bolts pass continuously through the mounting holes, the sealant layer, and the corresponding bolt through holes to tightly fix the fluidizing plate to the outside of the silo wall. At this time, the sealant layer just covers the gap between the sintered metal baffle and the window frame. The nuts of the connecting bolts are welded to the inner side of the sintered metal baffle. The pore size on the sintered metal baffle is no larger than 20μm. The barrel of the high-pressure booster gun passes through the window plate mounted inside the window frame on the back of the feeding silo. The barrel body is welded to the fluidizing plate of the window plate. The sintered metal baffle has corresponding through holes for the barrel body, which are interference-fitted with the barrel body.

[0006] In a preferred embodiment of the present invention, one side of the discharge cover is hinged to the lower edge of the back plate of the feeding bin, and is inclined as a whole towards the horizontal discharge port, with the inclination angle of the discharge cover being 10~30°.

[0007] In a preferred embodiment of this utility model, the horizontal discharge port is provided with multiple auxiliary blowing pipes.

[0008] In a preferred embodiment of this invention, the feeding pipe is divided into a front section, a rear section, and a middle section. The front and rear sections are rigid pipes, while the middle section is flexible. A cut-off valve is installed on the front section, and a return air pipe is installed on the outer wall of the rear section. Auxiliary blowpipes are installed on the interface areas of both the front and rear sections near the middle section. The diameter of the auxiliary blowpipe installed on the rear section is larger than that of the auxiliary blowpipe installed on the front section.

[0009] The beneficial effects of this utility model are as follows: This utility model further optimizes the feeding mechanism of the existing packaging machine. On the one hand, the feeding pipe is changed from vertical feeding to horizontal feeding. On the other hand, airflow is used to replace the traditional spiral feeding mechanism to deliver low-density small particle materials to the packaging station. In this way, not only can the vertical entry of particles into the packaging bag during the packaging process be significantly reduced, and particles are prevented from flying around randomly under air agitation, but also void structures are prevented during the feeding process, thus improving the stability of the feeding process. Attached Figure Description

[0010] Figure 1 This is a side view of a preferred embodiment of the present invention. Figure 2 This is a schematic diagram of the back window panel assembly structure in the embodiment shown; The components in the attached diagram are labeled as follows: 1. Turnover bin; 2. Feeding bin; 3. High-pressure booster air gun; 4. Feeding pipe; 5. Auxiliary blowing pipe; 201. Back window panel; 2011. Back window frame; 2012. Back window metal sintered baffle; 2013. Back window sealant layer; 2014. Back window fluidizing plate; 2015. Connecting bolt; 202. Side window panel; 203. Horizontal discharge port; 204. Discharge cover; 2041. Discharge cover window panel; 2042. Discharge cover handle; 205. Bolt through hole; 301. Interchangeable air nozzle; 302. Barrel; 303. Air hose connector. 401. Front section material pipe, 402. Middle section material pipe, 403. Rear section material pipe, 404. Cut-off valve, 405. Return air pipe. Detailed Implementation

[0011] The preferred embodiments of the present invention will now be described in detail with reference to the accompanying drawings, so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more definite definition of the scope of protection of the present invention.

[0012] Please see Figure 1 and Figure 2 The embodiments of this utility model include: A jet-assisted feeding device includes: a transfer bin 1, a feeding bin 2, a feeding pipe 4, and a high-pressure booster air gun 3. The transfer bin 1 is located directly above the feeding bin 2, and its bottom is connected to the top of the feeding bin 2. The bottom of the feeding bin 2 is provided with a discharge cover 204. A horizontal discharge port 203 is provided along the lower edge of the front wall of the feeding bin 2, and the horizontal discharge port 203 is externally connected to the feeding pipe 4. A high-pressure booster air gun 3 is installed on the back wall of the feeding bin 2. The device is equipped with a high-pressure assisted air gun 3, which includes a barrel 302, a switchable air nozzle 301, and an air pipe connector 303. The air pipe connector 303 is located at the tail of the barrel 302 and is connected to a high-pressure air pipe. The top of the barrel 302 passes through the wall of the back of the feeding bin 2 and enters the bin. The switchable air nozzle 301 is installed at the top of the barrel 302 and the air outlet direction of the switchable air nozzle 301 is aligned with the center of the horizontal discharge port 203.

[0013] The feeding bin 2 has window frames on both sides and the back wall and the discharge cover 204, namely side window frames, back window frames 2011 and cover window frames. The side window frames are equipped with side window panels 202, the back window frames are equipped with back window panels, and the cover window frames are equipped with discharge cover window panels 2041. Each window frame is a stepped structure with bolt through holes 205 arranged around it. The back window panel 201 includes a sintered metal back window baffle 2012, a back window sealant layer 2013, and a back window fluidizing plate 2014. The shape of the sintered metal back window baffle 2012 is clearance-fitted to the shape of the back window frame 2011. The area of ​​the fluidizing plate 2014 is larger than that of the sintered metal back window baffle 2012, and their outlines are similar. The fluidizing plate 2014 and the sintered metal back window baffle 2012 are concentrically fixed together by two connecting bolts 2015. The nuts of the connecting bolts 2015 are welded to the inner side of the sintered metal back window baffle 2012 to prevent them from falling off when the connection between the connecting bolts 2015 and the fluidizing plate 2014 becomes loose. The back window sealant layer 2013 is arranged around the sintered metal back window baffle 2012. The fluidized bed plate 2014 is positioned between the back window fluidized bed plate 2014 and the back window frame 2011. The outer ring contour of the fluidized bed plate 2014 coincides with the contour of the back window fluidized bed plate 2014, while the inner ring contour is smaller than the contour of the back window metal sintered baffle 2012, typically around 8 cm in actual installation. The back window fluidized bed plate 2014 has mounting holes that correspond one-to-one with the bolt through holes 205 around the back window frame 2011. When the back window plate 201 is installed, the back window metal sintered baffle 2012 is embedded in the back window frame 2011. Multiple fastening bolts pass through the mounting holes, the back window sealant layer 2013, and the corresponding bolt through holes 205 to tightly fix the back window fluidized bed plate 2014 to the outside of the silo wall. At this time, the back window sealant layer 2013 just covers the gap between the back window metal sintered baffle 2012 and the back window frame 2011, sealing the gap while pressing the back window metal sintered baffle 2012 tightly into the back window frame 2011. The side window panel 202 includes a side window metal sintered baffle, a side window sealant layer, and a side window fluidizing plate. The side window metal sintered baffle, side window sealant layer, and side window fluidizing plate are assembled into the side window panel 202 and installed into the side window frame in the same way that the back window metal sintered baffle 2012, back window sealant layer 2013, and back window fluidizing plate 2014 are assembled into the back window panel 201 and installed into the back window frame 2011. The material discharge cover window... Plate 2041 includes a cover window metal sintered baffle, a cover window sealant layer, and a cover window fluidization plate. The way in which the cover window metal sintered baffle, the cover window sealant layer, and the cover window fluidization plate are assembled into a discharge cover plate 2041 and installed on the discharge cover 204 is the same as the way in which the back window metal sintered baffle 2012, the back window sealant layer 2013, and the back window fluidization plate 2014 are assembled into a back window plate 201 and installed inside the back frame 2011.

[0014] The pore size of the side window metal sintered baffle, the rear window metal sintered baffle 2012, and the cover window metal sintered baffle is no larger than 20μm. The reason for selecting metal sintered baffles of this size is that the pores of this size can exhaust air in a timely manner during use without bringing out dust, thus avoiding impact on the surrounding environment.

[0015] The barrel 302 of the high-pressure assisted air gun 3 passes through the back window plate 201 installed inside the back window frame 2011 on the back of the feeding bin 2. The barrel 302 is welded and fixed to the back window fluidizing plate 2014. The back window metal sintered baffle 2012 is provided with corresponding through holes for the barrel, and the through holes for the barrel are interference-fitted with the barrel 302. In this way, the gap between the high-pressure assisted air gun 3 and the back window plate 201 is tight when the back window plate 201 is assembled, and there will be no leakage during use. Moreover, since the barrel is fixed to the back window fluidizing plate 2014 by welding, the overall stability is significantly increased.

[0016] The discharge cover 204 is hinged to the lower edge of the back plate of the feeding bin and is tilted as a whole towards the horizontal discharge port 203. The tilt angle of the discharge cover 204 is 10~30°. In practical applications, it is generally 15°. The reason for setting the tilt angle is that the material falling from above can automatically converge towards the horizontal discharge port 203, which facilitates the high-pressure booster air gun 3 to send the material into the horizontal discharge port 203 through high-pressure gas. Moreover, during cleaning, the discharge cover 204 can be opened by simply turning the discharge cover handle 2042 to open the discharge port. In addition, the drooping discharge cover 204 can block the material when it falls, preventing it from falling outside the production line.

[0017] The horizontal discharge port 203 is equipped with three auxiliary blowing pipes 5. By setting three auxiliary blowing pipes 5, the speed at which material enters the feeding pipe 4 from the horizontal discharge port 203 can be accelerated, and material accumulation at the inlet position can be prevented.

[0018] The feeding pipe 4 is divided into a front section 401, a rear section 402, and a middle section 403. The front section 401 and the rear section 403 are rigid pipes, while the middle section 402 is a flexible pipe. A shut-off valve 404 is installed on the front section 401, and a return air pipe 405 is installed on the outer wall of the rear section 403. This rigid-flexible-rigid pipe connection method can prevent the vibration of the front section 401 during the loading process from affecting the rear section 403, thus improving the stability of the outlet position of the feeding pipe 4.

[0019] Auxiliary blowing pipes 5 are installed at the interface areas of the front feed pipe 401 and the rear feed pipe 403 near the middle feed pipe 402. The diameter of the auxiliary blowing pipe 5 installed on the rear feed pipe 403 is larger than the diameter of the auxiliary blowing pipe 5 installed on the front feed pipe 401. The diameter of the auxiliary blowing pipe 5 installed in the front feed pipe 401 is the same as the diameter of the auxiliary blowing pipe 5 in the horizontal discharge port 203, while the diameter of the auxiliary blowing pipe 5 installed in the rear feed pipe 403 is approximately three times that of the auxiliary blowing pipe 5 installed in the front feed pipe 401. The purpose of installing auxiliary blowing pipes 5 at different positions on the feed pipe 4 is to improve the flowability of the material within the pipe and effectively prevent agglomeration and blockage. Since the rear feed pipe 403 has a larger diameter and is longer, it requires a relatively larger air volume.

[0020] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.

Claims

1. A jet-assisted feeding device, characterized in that, The jet-assisted feeding device includes: a turnover bin, a feeding bin, a feeding pipe, and a high-pressure booster air gun. The turnover bin is installed directly above the feeding bin, and its bottom is connected to the top of the feeding bin. The bottom of the feeding bin is provided with a discharge cover. The lower edge of the front wall of the feeding bin is provided with a horizontal discharge port, which is connected to the feeding pipe. A high-pressure booster air gun is installed on the back wall of the feeding bin. The high-pressure booster air gun includes a barrel, a switchable nozzle, and an air pipe connector. The air pipe connector is located at the tail of the barrel and is connected to a high-pressure air pipe. The top of the barrel passes through the back wall of the feeding bin and enters the bin. The switchable nozzle is installed at the top of the barrel, and the air outlet direction of the switchable nozzle is aligned with the center of the horizontal discharge port.

2. The jet-assisted feeding device according to claim 1, characterized in that, The sides and back of the feeding hopper are equipped with window frames on the hopper walls and the discharge cover. Each window frame contains a window panel. Each window frame has a stepped structure and is surrounded by bolt holes. Each window panel includes a sintered metal baffle, a sealant layer, and a fluidizing plate. The shape of the sintered metal baffle is clearance-fitted to the corresponding window frame shape. The fluidizing plate has a larger area than the sintered metal baffle and a similar outline. The fluidizing plate and the sintered metal baffle are concentrically fixed together by multiple connecting bolts. The sealant layer is arranged around the sintered metal baffle. The sintering baffle and the fluidizing plate are positioned such that the outer ring contour coincides with the contour of the fluidizing plate, while the inner ring contour is smaller than that of the metal sintering baffle. The fluidizing plate is provided with mounting holes that correspond one-to-one with the bolt through holes around the corresponding window frame. When the window panel is installed, the metal sintering baffle is embedded in the corresponding window frame. Multiple fastening bolts pass through the mounting holes, the sealant layer, and the corresponding bolt through holes to tightly fix the fluidizing plate to the outside of the silo wall. At this time, the sealant layer just covers the gap between the metal sintering baffle and the window frame.

3. The jet-assisted feeding device according to claim 2, characterized in that, The nuts of the connecting bolts are welded and fixed to the inner side of the sintered metal baffle.

4. The jet-assisted feeding device according to claim 2, characterized in that, The pore size on the metal sintering baffle is no larger than 20μm.

5. The jet-assisted feeding device according to claim 2, characterized in that, The barrel of the high-pressure assisted air gun passes through the window plate installed in the window frame on the back of the feeding bin. The barrel body is welded and fixed together with the fluidizing pressure plate of the window plate. The metal sintered baffle is provided with corresponding through holes for the barrel body. The through holes for the barrel body are interference fit with the barrel body.

6. The jet-assisted feeding device according to claim 1, characterized in that, The material discharge cover is hinged to the lower edge of the back plate of the feeding hopper on one side and is inclined as a whole towards the horizontal discharge port. The inclination angle of the material discharge cover is 10~30°.

7. The jet-assisted feeding device according to claim 1, characterized in that, The horizontal discharge port is equipped with multiple auxiliary blowpipes.

8. The jet-assisted feeding device according to claim 1, characterized in that, The feeding pipe is divided into a front section, a rear section, and a middle section. The front and rear sections are rigid pipes, while the middle section is a flexible pipe. A cut-off valve is installed on the front section, and a return air pipe is installed on the outer side of the rear section.

9. The jet-assisted feeding device according to claim 8, characterized in that, Auxiliary blowpipes are installed at the interface areas of the front section and rear section material pipes near the middle section material pipe.

10. The jet-assisted feeding device according to claim 9, characterized in that, The diameter of the auxiliary blowpipe installed on the rear section of the material pipe is larger than the diameter of the auxiliary blowpipe installed on the front section of the material pipe.

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