CN202967556U - An anti-clogging powder delivery or recovery device - Google Patents

Abstract

A powder conveying or recovery device capable of preventing blockage comprises a powder hopper, a fluidization disc, a powder guide pipe and a powder recovery container or a powder conveying pipeline; the method is characterized in that: the powder guide pipe is characterized by further comprising a discharging sleeve and a plate-shaped switch valve, one end of the plate-shaped switch valve is pivoted inside the discharging sleeve, the other end of the plate-shaped switch valve is a movable end and can seal or open an opening of a stretching end of the powder guide pipe, a first accommodating cavity is concavely arranged on the plate-shaped switch valve, a fluidization plate is arranged in the first accommodating cavity, a fluidization gas channel communicated with the first accommodating cavity is further formed in the plate-shaped switch valve, when the plate-shaped switch valve seals the opening of the stretching end of the powder guide pipe, the plate-shaped switch valve is abutted against the opening of the stretching end of the powder guide pipe, and the fluidization plate corresponds to the opening of the stretching end of the powder guide pipe, so that the fluidization gas conveyed from the fluidization gas channel can smoothly enter the powder guide pipe after passing through the fluidization plate. The utility model discloses can make the powder be difficult to pile up the jam in the pipeline when carrying or retrieving, and pipeline clearance is simple and convenient.

Description

An anti-clogging powder delivery or recovery device

Technical field:

The utility model relates to a powder delivery or recovery device, in particular to a device capable of preventing blockage during the powder delivery or recovery process. the

Background technique:

Existing powder delivery or recovery devices generally adopt the shrink valve structure as shown in Fig. 1 and Fig. 2 . The contraction valve 03 realizes the closure and opening of the powder channel by the deformation and contraction of its special elastic hose inner sleeve 031. When the powder passage needs to be closed, a controlled compressed air enters the closed cavity 033 of the shrink valve 03 at the air inlet 032 of the shrink valve 03, and the inner bush 031 will flow to the powder passage of the shrink valve 03 under the pressure of the compressed air. 034 is deformed, and the inner liner 031 is deformed under continuous pressure until the powder channel 034 is closed. When the powder needs to be recovered or enter the container 05, the compressed air in the contraction valve 03 is discharged through the air inlet 032, so that the inner liner 031 rebounds and shrinks, the powder channel 034 is opened, and the powder in the powder hopper is discharged in the fluidized disk 01 Under the action of fluidization, the powder enters the inner cavity 021 of the powder guide pipe 02 from the powder hopper, and passes through the powder channel 034 of the shrink valve 03 to the inner cavity 041 of the flange 04, and finally reaches the container 05 to be collected. This structure has the following disadvantages: 1. When the powder channel 034 is in the closed state, the powder accumulated in the area of 021 and 034 cannot be fluidized, and it is easy to accumulate in the pipeline for a long time and block it. When the shrinkage valve 03 is opened At this time, the powder cannot enter the container 05 and be recovered. 2. When the powder channel 034 of the shrink valve 03 is opened, it depends on the elastic rebound of the inner bush 031 of the shrink valve to shrink, so that the service life, elasticity and sealing performance of the inner bush 031 are relatively high. 3. The quality problem and aging of the inner bushing 031 during use will affect the closing and opening effect of the powder passage 034. 4. The cost of the shrink valve is high. the

Invention content:

The purpose of the utility model is to provide an anti-clogging powder conveying or recycling device, the powder is not easy to accumulate and block in the pipeline during conveying or recycling, and the pipeline cleaning is simple and convenient. the

The utility model is achieved through the following technical solutions:

An anti-clogging powder delivery or recovery device comprising

A powder hopper, the powder hopper has a cavity for containing powder, and the bottom of the powder hopper is provided with a fluidizing gas inlet and an assembly hole;

A fluidizing plate, the fluidizing plate is set in the powder hopper and close to the bottom of the powder hopper, a fluidizing gas chamber is provided between the fluidizing plate and the bottom of the powder hopper, and the fluidizing gas inlet is communicated with the fluidizing gas chamber, There are through holes corresponding to the assembly holes on the fluidizing plate;

A powder guide tube, one end of the powder guide tube passes through the assembly hole of the powder hopper and the through hole of the fluidized plate in turn to make the opening of the end communicate with the cavity of the powder hopper, and the other end protrudes from the through hole of the powder hopper; and

A powder recovery container or powder conveying pipeline;

It is characterized in that: also includes

The lower material sleeve is a cylindrical structure with a closed upper end and an open lower end, and a connecting hole is provided at the closed end. The connecting hole is sleeved outside the protruding end of the powder guide tube. connected to said powder recovery container or powder delivery line; and

A plate-shaped switch valve, one end of the plate-shaped switch valve is pivotally arranged inside the lower material sleeve, and the other end is a movable end that can close or open the opening of the protruding end of the powder guide pipe. The plate-shaped switch valve is recessed with a second A cavity, the first cavity is provided with a fluidization plate, and a fluidization gas passage communicated with the first cavity is provided inside the plate-shaped switch valve, when the plate-shaped switch valve closes the powder guide pipe When the opening of the protruding end is opened, the plate-shaped switch valve is in contact with the opening of the protruding end of the powder guide tube, and its fluidization plate corresponds to the opening of the protruding end of the powder guide tube, so that the fluidizing gas transported from the fluidizing gas channel passes through After the fluidized plate, it can smoothly enter the inside of the powder guide tube. the

As an improvement of the above scheme, it also includes a control mechanism, shaft holes are respectively opened between the front and rear side walls of the blanking sleeve, a connecting shaft is arranged between the two shaft holes, and the two ends of the connecting shaft protrude from the shaft holes respectively, and the plate-shaped switching valve is sleeved outside the connecting shaft and fixedly connected with the connecting shaft. One of the extending ends of the connecting shaft is provided with a The passage through the side wall of the connecting shaft communicates with the fluidizing gas passage, and the other protruding end of the connecting shaft is connected with the control mechanism. The control mechanism can act on the connecting shaft to make the connecting shaft and drive the plate-shaped switch The valve flips to close or open the opening at the protruding end of the powder guide tube. the

The above-mentioned control mechanism is a cylinder, which is installed on the bottom of the powder hopper or on the outer wall of the blanking sleeve. The piston push rod of the cylinder is movably pivotally connected with one end of a crank, and the other end of the crank is connected with the other end of the connecting shaft. One protruding end is fixedly connected. the

The inside of the above-mentioned plate-shaped on-off valve is also provided with a second cavity connected with the fluidizing gas channel inside the plate-shaped on-off valve and the first cavity under the first cavity, and the second cavity is smaller than the first cavity. A cavity is small. the

The protruding end of the above-mentioned powder guide tube is sleeved with a sealing ring on the outer wall near the opening. the

One end of the above-mentioned powder guide pipe is provided with a radially outwardly extending flange on the side wall of the opening, and the other end of the powder guide pipe is provided with an annular groove on the outer wall near the opening. An external thread is provided on the outer wall above the annular groove; an internal thread that matches the external thread of the powder guide pipe is provided in the connecting hole of the blanking sleeve; the upper surface of the fluidized plate is connected to the The periphery of the hole is recessed to match the flanging of the powder guide tube; the sealing ring is sleeved on the annular groove of the powder guide tube. the

The outer surface of the sealing ring is provided with a V-shaped groove extending along its circumference. the

The above-mentioned fluidized plate corresponds to the center of the opening at the protruding end of the powder guide pipe. the

The above-mentioned blanking sleeve is a cylinder structure with a cylindrical or conical cross section. the

The cross-section of the above-mentioned powder guide pipe is cylindrical or conical. the

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

1) There is a fluidization plate and a fluidization gas channel on the plate-shaped on-off valve. When the plate-shaped on-off valve closes the opening of the protruding end of the powder guide tube, its fluidization plate corresponds to the opening of the protruding end of the powder guide tube. , so that the fluidizing gas transported from the fluidizing gas channel can smoothly enter the inside of the powder guide tube after passing through the fluidization plate, so that the powder in the powder guide tube can be fluidized. When the plate-shaped switch valve opens the powder guide tube When there is an opening at the end, the fluidized powder can fall unimpeded to the powder recovery container or powder conveying pipeline. The structure is simple, and the powder guide pipe is not easily blocked. In addition, in addition to fluidizing the powder, the fluidizing gas can also perform a self-cleaning function on the connecting shaft, the plate-shaped switch valve, and the powder guide pipe itself during cleaning, saving costs and achieving multiple functions at the same time The functions make cleaning easier, more convenient and more thorough. the

2) A channel extending axially inward at the protruding end of the connecting shaft communicates with the fluidizing gas channel in the plate-shaped switch valve, which not only has a simple and compact structure, but also can make full use of the space and reduce the volume of the device. Clever idea. the

3) The protruding end of the powder guide tube is provided with a sealing ring on the outer wall near the opening. When the plate-shaped switch valve closes the opening of the powder guide tube, the plate-shaped switch valve and the protruding end of the powder guide tube A sealing structure is formed between them, so that the sealing between the plate switch valve and the powder guide pipe is more reliable, and the sealing ring can be replaced more conveniently. the

Description of drawings:

Fig. 1 is a schematic diagram of the structure of the shrink valve of the existing powder delivery or recovery device in the closed state. the

Fig. 2 is a schematic structural view of the shrink valve of the existing powder delivery or recovery device in an open state. the

Fig. 3 is a structural schematic diagram of the plate-shaped on-off valve of the present invention in a closed state. the

FIG. 4 is an enlarged view of part I of FIG. 3 . the

Fig. 5 is a structural schematic diagram of the plate-shaped on-off valve of the present invention in an open state. the

Fig. 6 is a schematic diagram of the assembly of the plate-shaped on-off valve and the connecting shaft of the present invention. the

Fig. 7 is a sectional view of A-A of Fig. 6 . the

Fig. 8 is a sectional view along line BB of Fig. 6 . the

Figure 9 is a schematic diagram of the assembly of the powder guide tube and the blanking sleeve of the present invention. the

Detailed ways:

As shown in the figure, an anti-clogging powder conveying or recovery device includes a powder hopper 1, a fluidizing plate 11, a powder guide pipe 2, a blanking sleeve 3, a plate-shaped switch valve 4, a control mechanism 5, and powder recovery Container 6 or powder delivery line. the

The powder hopper 1 has a cavity for containing powder 10 , and a fluidizing gas inlet 12 and an assembly hole are opened at the bottom of the powder hopper 1 . the

The fluidizing disc 11 is arranged in the powder hopper 1 and is close to the bottom of the powder hopper. A fluidizing gas chamber 13 is arranged between the fluidizing disc 11 and the bottom of the powder hopper. The fluidizing gas inlet 12 is connected to the fluidizing gas chamber. 13, and the fluidizing plate 11 is provided with a through hole corresponding to the assembly hole. the

One end of the powder guide pipe 2 passes through the assembly hole of the powder hopper 1 and the through hole of the fluidizing plate 11 in order to communicate with the cavity of the powder hopper, and the other end protrudes from the through hole of the powder hopper. the

The blanking sleeve 3 is a cylindrical structure with a closed upper end and an open lower end, and a connecting hole 31 is provided at the closed end, and the connecting hole 31 is sleeved outside the protruding end of the powder guide pipe 2. The open end is connected with the powder recovery container 6 or the powder conveying pipeline. Axle holes 32 are respectively provided between the front and rear sidewalls of the blanking sleeve 3, and a connecting shaft 7 is arranged between the two shaft holes 32, and the two ends of the connecting shaft 7 protrude from the shaft holes 32 respectively, and are connected to each other. One of the protruding ends of the shaft is provided with a channel 71 extending axially inward from the protruding end and passing through the side wall of the connecting shaft, and the other protruding end 73 of the connecting shaft is connected with the control mechanism 5 . the

One end of the plate-shaped switching valve 4 is sleeved outside the connecting shaft 7 and fixedly connected with the connecting shaft 7, and the other end is a movable end. The control mechanism 5 can act on the connecting shaft 7 to make the connecting shaft 7 and drive the plate-shaped The on-off valve 4 is overturned to close or open the opening at the protruding end of the powder guide pipe 2 . The plate-shaped on-off valve 4 is concavely provided with a first chamber 41, and the first chamber 41 is provided with a fluidizer plate 411, and the inside of the plate-shaped on-off valve 4 is also provided with a fluidizer that communicates with the first chamber 41. Air channel 43, the channel 71 in the connecting shaft 7 communicates with the fluidization gas channel 43, when the plate-shaped switch valve 4 closes the opening of the protruding end of the powder guide pipe 2, the plate-shaped switch valve 4 and the guide The opening of the protruding end of the powder tube 2 is offset, and its fluidization plate 411 corresponds to the opening of the protruding end of the powder guide tube 2. In the utility model, it is preferable that the fluidization plate 411 is in the center of the opening of the protruding end of the powder guide tube 2. Correspondingly, the fluidizing gas delivered from the channel 71 of the connecting shaft 7 can smoothly enter the inside of the powder guide pipe 2 after passing through the fluidizing gas channel 43 and the fluidizing plate 411 . the

Further, the control mechanism 5 can be any power mechanism. In this embodiment, the control mechanism 5 is preferably a cylinder 51, which can be installed on the bottom of the powder hopper or on the outer wall of the blanking sleeve. In this embodiment, the cylinder 51 is preferably installed At the bottom of the powder hopper 1 , the piston push rod 52 of the cylinder is movably pivotally connected to one end of a crank 8 , and the other end of the crank 8 is fixedly connected to the other protruding end 73 of the connecting shaft 7 . As shown in FIG. 8 , the cross section of the other extension end 73 of the connecting shaft 7 is square, and the other end of the crank 8 is fixedly connected with the square extension end 73 . the

In the utility model, one end of the plate-shaped switching valve 4 is sleeved outside the connecting shaft 7 and fixedly connected with the connecting shaft 7. The fixed connection method is shown in Figure 6, and a threaded hole 72 can be set on the connecting shaft 7. , and set threaded hole 44 at the position corresponding to threaded hole 72 on the plate-shaped on-off valve, by a screw and threaded hole 44 and threaded hole 72, the plate-shaped on-off valve 4 is fixedly connected with connecting shaft 7. the

Furthermore, as shown in FIG. 7 , a fluidizing gas channel 43 inside the plate-shaped switch valve 4 can be connected with the first cavity 41 under the first cavity 41 inside the plate-shaped switch valve 4. The second cavity 42 is open, and the second cavity 42 is smaller than the first cavity 41, so that the fluidizing gas delivered from the fluidizing gas passage 43 can first diffuse through the second cavity 42 and then flow to the first cavity. The fluidizing plate 411 in the cavity 41 allows fluidizing gas to pass through the entire fluidizing plate 411, increasing the fluidizing area. the

In the utility model, a sealing ring 9 can also be sleeved on the outer wall near the opening at the protruding end of the powder guiding pipe 2 . In order to strengthen the sealing between the plate-shaped switch valve 4 and the powder-guiding pipe 2 when the plate-shaped switching valve 4 closes the opening of the powder-guiding pipe 2 . the

Specifically, as shown in Figure 9, one end of the powder guide tube 2 is provided with a radially outwardly extending flange 21 on the side wall of its opening, and the other end of the powder guide tube is located on the outer side wall near the opening. The upper concave is provided with an annular groove 22, and the outer wall of the powder guide pipe is provided with an external thread 23 above the annular groove 22; Cooperating internal thread 311; the upper surface of the fluidizing plate 11 is recessed on the periphery of its through hole to match the flanging 21 of the powder guide tube; the sealing ring 9 is sleeved on the ring of the powder guide tube slot 22. the

In addition, the outer surface of the sealing ring 9 may also be provided with a V-shaped groove extending along its circumference. The blanking sleeve 3 can be a cylinder structure with a cylindrical or conical section, and the powder guiding pipe 2 can also be cylindrical or conical in section. In this embodiment, the blanking sleeve 3 is a cylinder structure with a cylindrical cross-section, and the cross-section of the powder guiding pipe 2 is also cylindrical. the

The above descriptions are only preferred embodiments of the present utility model, and are not used to limit the scope of implementation of the present utility model. All equivalent changes and modifications made according to the scope of the utility model patent all fall within the scope covered by the utility model patent . the

Claims (10)

1. An anti-clogging powder delivery or recovery device, comprising A powder hopper, the powder hopper has a cavity for containing powder, and the bottom of the powder hopper is provided with a fluidizing gas inlet and an assembly hole; A fluidizing plate, the fluidizing plate is set in the powder hopper and close to the bottom of the powder hopper, a fluidizing gas chamber is provided between the fluidizing plate and the bottom of the powder hopper, and the fluidizing gas inlet is communicated with the fluidizing gas chamber, A through hole corresponding to the assembly hole is opened on the fluidizing plate; A powder guide tube, one end of the powder guide tube passes through the assembly hole of the powder hopper and the through hole of the fluidizing plate in turn to communicate with the cavity of the powder hopper, and the other end protrudes from the through hole of the powder hopper; and A powder recovery container or powder conveying pipeline; It is characterized in that: also includes The lower material sleeve is a cylindrical structure with a closed upper end and an open lower end, and a connecting hole is provided at the closed end. The connecting hole is sleeved outside the protruding end of the powder guide tube. connected to said powder recovery container or powder delivery pipeline; and A plate-shaped switch valve, one end of the plate-shaped switch valve is pivotally arranged inside the lower material sleeve, and the other end is a movable end that can close or open the opening of the protruding end of the powder guide pipe. The plate-shaped switch valve is recessed with a second A cavity, the first cavity is provided with a fluidization plate, and a fluidization gas passage communicated with the first cavity is provided inside the plate-shaped switch valve, when the plate-shaped switch valve closes the powder guide pipe When the opening of the protruding end is opened, the plate-shaped switch valve is in contact with the opening of the protruding end of the powder guide tube, and its fluidization plate corresponds to the opening of the protruding end of the powder guide tube, so that the fluidizing gas transported from the fluidizing gas channel passes through After the fluidized plate, it can smoothly enter the inside of the powder guide tube. 2. An anti-clogging powder conveying or recovery device according to claim 1, characterized in that: it also includes a control mechanism, shaft holes are respectively opened between the front and rear side walls of the blanking sleeve, and a The connecting shaft is arranged between the two shaft holes, and the two ends of the connecting shaft protrude from the shaft holes respectively. The plate-shaped switch valve is sleeved outside the connecting shaft and fixedly connected with the connecting shaft. The outlet end is provided with a channel extending axially inward from the protruding end and passing through the side wall of the connecting shaft. This channel communicates with the fluidizing gas channel, and the other protruding end of the connecting shaft is connected to the control mechanism. , the control mechanism can act on the connecting shaft to make the connecting shaft and drive the plate-shaped switching valve to turn over to close or open the opening of the protruding end of the powder guide pipe. 3. An anti-clogging powder delivery or recovery device according to claim 2, characterized in that: the control mechanism is a cylinder, which is installed on the bottom of the powder hopper or on the outer wall of the blanking sleeve, and the cylinder The piston push rod is movably pivotally connected to one end of a crank, and the other end of the crank is fixedly connected to the other protruding end of the connecting shaft. 4. An anti-clogging powder conveying or recovery device according to any one of claims 1 to 3, characterized in that: the inside of the plate-shaped switch valve is also provided with a plate below the first cavity. The fluidizing gas channel inside the switch valve is connected to the second cavity connected with the first cavity, and the second cavity is smaller than the first cavity. 5. An anti-clogging powder delivery or recovery device according to claim 4, characterized in that: the protruding end of the powder guiding pipe is sleeved with a sealing ring on the outer wall near the opening. 6. An anti-clogging powder conveying or recovery device according to claim 5, characterized in that: one end of the powder guiding pipe is provided with a radially outwardly extending flange on the side wall at its opening , the other end of the powder guide pipe is concavely provided with an annular groove on the outer wall near the opening, and the outer wall of the powder guide pipe is provided with an external thread above the annular groove; the connecting hole of the lower material sleeve is provided with There is an internal thread that matches the external thread of the powder guide tube; the upper surface of the fluidized plate is recessed on the periphery of its through hole to match the flanging of the powder guide tube; the sealing ring is sleeved on the powder guide on the annular groove of the pipe. 7. An anti-clogging powder delivery or recovery device according to claim 6, characterized in that: the outer surface of the sealing ring is provided with a V-shaped groove extending along its circumference. 8. An anti-clogging powder delivery or recovery device according to claim 7, characterized in that: the fluidized plate corresponds to the center of the opening at the protruding end of the powder guide tube. 9. An anti-clogging powder conveying or recovery device according to claim 8, characterized in that: the blanking sleeve is a cylinder structure with a cylindrical or conical cross-section. 10. An anti-clogging powder delivery or recovery device according to claim 9, characterized in that: the cross-section of the powder guide pipe is cylindrical or conical.

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