An intermittent feeding device, use method and application thereof

Abstract

The present invention provides an intermittent feeding device, wherein the intermittent feeding device is sequentially provided with a silo, a feeding device and a conveying device along the feeding direction, the material stored in the silo passes through the feeding device and falls into the conveying device, and the conveying device delivers the material to the downstream section; the feeding device comprises a transmission member, a telescopic feeding tube and a sealing member, one end of the telescopic feeding tube is connected to the silo, and the other end is connected to the sealing member; the transmission member is used to drive the sealing member to move up and down so that the sealing member is separated from or docked with the feeding port of the conveying device; the intermittent feeding device also comprises a transmission screw located below the conveying device, and the transmission screw is used to drive the conveying device to move along the transmission screw so as to push the discharge port of the conveying device into or out of the downstream section. The present invention adds a feeding device, and drives the sealing member to move up and down through the transmission member, thereby realizing intermittent feeding.

Description

Technical Field

[0001] The present invention belongs to the technical field of conveying equipment, and relates to an intermittent feeding device, a use method and application thereof, and in particular to an intermittent feeding device used in conjunction with a rotary kiln for roasting, a use method and application thereof. Background Art

[0002] At present, rotary kilns are widely used in many production industries such as building materials, metallurgy, chemical industry, environmental protection, etc., mainly through rotary cylinder equipment to mechanically, physically or chemically process solid materials. Among them, the feeding method of rotary kiln generally adopts the traditional feeding method of rotary kiln, and the raw materials to be processed in the feeding pipe rely on the gravity of the materials to enter the feeding port of rotary kiln.

[0003] CN204404767U discloses a rotary kiln body structure for forced feeding, comprising a rotary kiln body, a feed port section and a discharge port section respectively arranged at both ends of the rotary kiln body, and a feed pipe arranged in the feed port section, wherein a feeding steel plate is arranged on the inner wall of the kiln body of the feed port section in a spiral progressive shape, and a kiln tail retaining ring is arranged at the end of the feed port section.

[0004] CN207702967U discloses a rotary kiln feeding device, comprising a barrel for circulating materials, a sealing cover fixedly connected to the left port of the barrel, a feeding inlet arranged at the left end of the barrel and opening upward for feeding materials, a rotating shaft arranged inside the barrel and coaxially with the barrel, a spiral blade fixed on the rotating shaft for promoting the flow of materials, a wear-resistant part fitted and covered on the working surface of the spiral blade, a power component arranged at the left end of the rotating shaft for driving the rotating shaft to rotate, and a crushing component arranged at the right end of the rotating shaft, and the right end of the barrel is provided with a discharge port.

[0005] CN209068972U discloses a rotary kiln feeding and pushing device, which is applied to a vanadium-based alloy rotary kiln production line, and comprises a power mechanism, a piston push plate and a piston outer cylinder; the power mechanism comprises a motor, a transmission mechanism and a connecting rod, wherein the transmission mechanism comprises a turntable, a pin shaft and a swing rod; the motor is arranged on the outer side of the rotary kiln tail, the motor is connected to the turntable and one end of the pin shaft in sequence, the other end of the pin shaft is rotatably connected to one end of the swing rod, the other end of the swing rod is connected to one end of the connecting rod, the connecting rod passes through the side wall of the rotary kiln tail and extends into the piston outer cylinder, the other end of the connecting rod is connected to the piston push plate, one end of the piston outer cylinder is fixedly arranged in the side wall of the rotary kiln tail, the other end of the piston outer cylinder is communicated with the feed pipe of the rotary kiln, and is arranged opposite to the feed port of the rotary kiln cylinder.

[0006] When roasting high-purity vanadium powder, one method is to use a rotary kiln for intermittent roasting. After roasting and deammoniation, the feed end is generally raised with the discharge end of the kiln as a fulcrum to unload the finished high-purity vanadium. After the kiln is reset, ammonium vanadate is refilled for the next roasting. Manual feeding is required in this process, which greatly prolongs the production cycle. Summary of the invention

[0007] In view of the shortcomings of the prior art, the purpose of the present invention is to provide an intermittent feeding device, a method of use and application thereof. The present invention improves the existing conveying device and adds a feeding device, which realizes automatic intermittent feeding to the downstream process according to a set operating sequence through actuators such as transmission parts, telescopic feeding pipes and sealing parts.

[0008] To achieve this object, the present invention adopts the following technical solutions:

[0009] In a first aspect, the present invention provides an intermittent feeding device, which is provided with a silo, a feeding device and a conveying device in sequence along the feeding direction. The material stored in the silo passes through the feeding device and falls into the conveying device, and the conveying device delivers the material to a downstream section.

[0010] The feeding device comprises a transmission part, a telescopic feeding tube and a sealing part. One end of the telescopic feeding tube is connected to the silo, and the other end is connected to the sealing part. The transmission part is used to drive the sealing part to move up and down so that the sealing part is separated from or connected to the feeding port of the conveying device.

[0011] The intermittent feeding device also includes a transmission screw located below the conveying device, and the transmission screw is used to drive the conveying device to move along the transmission screw so as to push the discharge port of the conveying device into or out of the downstream section; when feeding is required, the transmission screw pushes the discharge port of the conveying device into the downstream section, the transmission member drives the seal to move downward to connect with the feed port of the conveying device, and the telescopic discharge pipe connects the silo and the conveying device; when feeding needs to be blocked, the transmission member drives the seal to move upward to disengage from the feed port of the conveying device, the transmission screw moves the conveying device out of the downstream section, and cuts off the connection between the telescopic discharge pipe and the conveying device.

[0012] The present invention improves the existing conveying device, adds a feeding device, and realizes automatic intermittent feeding to the downstream process according to the set operation sequence through actuators such as transmission parts, telescopic feeding pipes and sealing parts.

[0013] In the present invention, the transmission screw is driven by the motor reducer, and the overall advancement and withdrawal and resetting of the conveying device are achieved through forward and reverse conversion.

[0014] As a preferred technical solution of the present invention, the conveying device is a screw conveyor.

[0015] Preferably, the feed inlet of the conveying device is a funnel structure.

[0016] As a preferred technical solution of the present invention, the feeding device includes an upper flange and a lower flange, a telescopic feeding pipe and at least one transmission member are arranged between the upper flange and the lower flange, the transmission member is used to drive the lower flange to move up and down, the telescopic feeding pipe follows the extension or shortening of the lower flange under the drive of the transmission member, and the sealing member is arranged on the bottom surface of the lower flange.

[0017] Preferably, both ends of the telescopic discharge pipe are detachably fixed to the upper end flange and the lower end flange.

[0018] Preferably, both ends of the telescopic discharge pipe are fixed to the upper end flange and the lower end flange respectively by bolts.

[0019] Preferably, both ends of the transmission member are detachably fixed to the upper flange and the lower flange.

[0020] Preferably, both ends of the transmission member are fixed to the upper flange and the lower flange respectively by bolts.

[0021] Preferably, the sealing member is detachably fixed to the bottom surface of the lower end flange.

[0022] Preferably, the sealing member is fixed to the bottom surface of the lower flange by bolts.

[0023] Preferably, two transmission members are arranged between the upper flange and the lower flange, and the two transmission members are symmetrically arranged on both sides of the telescopic discharge pipe.

[0024] Preferably, the transmission member is a pneumatic cylinder or a hydraulic cylinder.

[0025] Preferably, the sealing element is a rubber sealing ring.

[0026] As a preferred technical solution of the present invention, the transmission part includes a pneumatic drive device, a two-position four-way solenoid valve, an intake pipeline and an exhaust pipeline. The two ends of the shell of the pneumatic drive device are independently connected to the two-position four-way solenoid valve, and the two-position four-way solenoid valve is independently connected to the intake pipeline and the exhaust pipeline.

[0027] Preferably, the pneumatic drive device comprises a cylinder and a piston assembly located inside the cylinder.

[0028] Preferably, the piston assembly comprises a piston and a piston rod, one end of the piston rod is connected to the piston, and the other end is connected to the lower end flange, and the piston rod is driven to reciprocate in the cylinder by air pressure, thereby driving the lower end flange to move up and down.

[0029] Preferably, the piston rod is hinged to the lower end flange.

[0030] In the present invention, the piston rod and the lower end flange are preferably hinged to retain appropriate degrees of freedom, so as to facilitate the sealing of the sealing member and the feed port of the screw conveyor.

[0031] As a preferred technical solution of the present invention, the two-position four-way solenoid valve includes a stroke channel and a return channel.

[0032] Preferably, the stroke channel includes a stroke intake passage and a stroke exhaust passage, the stroke intake passage connects the intake pipeline and one end of the pneumatic driving device, the stroke exhaust passage connects the exhaust pipeline and the other end of the pneumatic driving device, the gas enters one end of the pneumatic driving device from the intake pipeline through the stroke intake passage, the gas drives the piston assembly to push out the cylinder to complete a stroke, and the gas at the other end of the pneumatic driving device is discharged from the exhaust pipeline through the stroke exhaust passage.

[0033] Preferably, the return passage includes a return air intake passage and a return exhaust passage, the return air intake passage connects the air intake pipeline and one end of the air pressure driving device, the return exhaust passage connects the exhaust pipeline and the other end of the air pressure driving device, the gas enters one end of the air pressure driving device from the air intake pipeline through the return air intake passage, the gas drives the piston assembly to be retracted into the cylinder to complete a return stroke, and the gas at the other end of the air pressure driving device is discharged from the exhaust pipeline through the return exhaust passage.

[0034] Preferably, the air intake pipeline comprises an air intake main pipe and an overflow branch pipe, the inlet end of the overflow branch pipe is connected to the air intake branch pipe, a ball valve is arranged on the air intake main pipe, and an overflow valve is arranged on the overflow branch pipe.

[0035] Preferably, an overflow valve is provided on the exhaust pipeline.

[0036] In the present invention, the ball valve arranged on the intake main pipe is mainly used to control the intake flow rate of the air source, and the speed of the piston rod being pushed out of the cylinder and retracted into the cylinder is controlled by controlling the opening of the overflow valve arranged on the exhaust pipeline and the overflow valve arranged on the overflow branch pipe.

[0037] As a preferred technical solution of the present invention, the intermittent feeding device also includes a control module, and the control module is used to control the process of the transmission screw driving the conveying device and the process of the transmission member driving the lower end flange to move up and down.

[0038] In the present invention, the operation process of the actuator is controlled by computer software, and automatic feeding is completed in a set order, thereby fully realizing automation, which not only improves work efficiency but also saves labor costs.

[0039] In a second aspect, the present invention provides a method for using the intermittent feeding device according to the first aspect, the method comprising:

[0040] (I) The transmission member drives the seal member to move downward so that the seal member docks with the feed port of the sealing conveying device, and the material stored in the silo passes through the telescopic discharge pipe and falls into the conveying device, and the material is delivered to the downstream section through the conveying device;

[0041] (II) The transmission member drives the sealing member to move upward so that the sealing member is separated from the conveying device.

[0042] As a preferred technical solution of the present invention, step (I) specifically comprises:

[0043] The transmission screw drives the conveying device to move until the discharge port of the conveying device is pushed into the downstream section. The transmission part drives the lower end flange to move down to the preset low point. The sealing part set on the bottom surface of the lower end flange moves down accordingly until it butts against the feed port. The material stored in the silo enters the conveying device through the telescopic discharge pipe and is sent to the downstream section by the conveying device to complete the feeding.

[0044] Preferably, step (II) specifically comprises:

[0045] The transmission member drives the lower end flange to move up to a preset high point, and the sealing member arranged on the bottom surface of the lower end flange moves up accordingly until it is completely separated from the feed port, and the transmission screw drives the conveying device to move until the discharge port of the conveying device moves out of the downstream section, and the feeding is interrupted.

[0046] Preferably, step (I) and step (II) are performed alternately to achieve intermittent feeding.

[0047] Preferably, in step (I) and step (II), the transmission process of the transmission screw and the driving process of the transmission member are controlled by a control module.

[0048] In a third aspect, the present invention provides an application of the intermittent feeding device as described in the first aspect, wherein the intermittent feeding device is used in an intermittent rotary kiln roasting high-purity vanadium production system.

[0049] Exemplarily, the intermittent feeding device provided by the present invention is used to load ammonium vanadate into a rotary kiln, and the loading process specifically includes:

[0050] (Ⅰ) In the initial state, the rotary kiln is in a horizontal position, and the transmission screw pushes the feed port of the conveying device to the unloading position (directly below the discharge port of the silo). At this time, the discharge port of the conveying device extends into the interior of the rotary kiln. The telescopic discharge pipe extends under the push of the piston rod, and the piston rod pushes the lower end flange downward. The seal at the bottom of the lower end flange moves downward until it is tightly connected to the feed port of the conveying device. Open the bottom valve of the silo, and the silo, telescopic discharge pipe and screw conveyor form a discharge channel. The ammonium vanadate stored in the silo enters the conveying device through the telescopic discharge pipe and is delivered into the rotary kiln by the conveying device;

[0051] (II) When it is necessary to stop loading ammonium vanadate into the rotary kiln, close the bottom valve of the silo, and the telescopic discharge pipe shortens under the pull of the piston rod. The piston rod pulls the lower flange upward, and the seal set at the bottom of the lower flange moves upward until it is completely separated from the feed port of the conveying device. The transmission screw returns the conveying device to its original position, and the conveying device as a whole withdraws from the rotary kiln, and the feeding process ends.

[0052] (III) After the feeding is completed, ammonium vanadate is roasted at high temperature in the rotary kiln to remove ammonia. After the roasting is completed, the feed end of the rotary kiln is lifted to discharge the high-purity vanadium product, and then the rotary kiln is lowered back to the horizontal position, and steps (I) and (II) are repeated.

[0053] The numerical range described in the present invention not only includes the point values ​​listed above, but also includes any point values ​​between the above numerical ranges that are not listed. Due to space limitations and for the sake of simplicity, the present invention no longer exhaustively lists the specific point values ​​included in the range.

[0054] The system refers to an equipment system, a device system or a production device.

[0055] Compared with the prior art, the present invention has the following beneficial effects:

[0056] The present invention improves the existing conveying device, adds a feeding device, completes automatic feeding according to the operation sequence set by the computer through actuators such as transmission parts, telescopic feeding pipes and sealing parts, and drives the sealing parts to move up and down through the transmission parts, thereby realizing intermittent feeding. BRIEF DESCRIPTION OF THE DRAWINGS

[0057] Figure 1 A schematic structural diagram of an intermittent feeding device provided in one specific embodiment of the present invention;

[0058] Figure 2 A schematic structural diagram of an intermittent feeding device provided in one specific embodiment of the present invention;

[0059] Figure 3 A schematic diagram of the structure of a feeding device provided in a specific embodiment of the present invention;

[0060] Figure 4 A schematic diagram of the structure of a transmission member provided for a specific embodiment of the present invention;

[0061] Figure 5 A schematic diagram of the structure of a transmission member provided for a specific embodiment of the present invention;

[0062] Among them, 1- silo; 2- unloading device; 3- transmission screw; 4- conveying device; 5- feed port; 6- rotary kiln; 7- upper end flange; 8- transmission member; 9- telescopic unloading pipe; 10- lower end flange; 11- sealing member; 12- pneumatic drive device; 13- second overflow valve; 14- ball valve; 15- first overflow valve; 16- two-position four-way solenoid valve. DETAILED DESCRIPTION

[0063] It should be understood that, in the description of the present invention, the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0064] It should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "disposed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0065] The technical solution of the present invention is further described below with reference to the accompanying drawings and through specific implementation methods.

[0066] In one embodiment, the present invention provides an intermittent feeding device, wherein the intermittent feeding device is as follows: Figure 1 and Figure 2As shown, a silo 1, a feeding device 2 and a conveying device 4 are sequentially arranged along the feeding direction. The material stored in the silo 1 passes through the feeding device 2 and falls into the conveying device 4, and the conveying device 4 delivers the material to the downstream section. Figure 3 As shown, it includes a transmission member 8, a telescopic discharge pipe 9 and a sealing member 11. One end of the telescopic discharge pipe 9 is connected to the silo 1, and the other end is connected to the sealing member 11. The transmission member 8 is used to drive the sealing member 11 to move up and down so that the sealing member 11 is separated from or connected to the feed port 5 of the conveying device 4.

[0067] like Figure 1 In the position state shown, that is, when the seal 11 is connected to the feed port 5 of the conveying device 4, the telescopic feed pipe 9 is connected to the silo 1 and the conveying device 4 to complete the continuous feeding. Figure 2 The position state shown, that is, when the sealing member 11 is separated from the feeding port 5 of the conveying device 4, the connection between the telescopic feeding pipe 9 and the conveying device 4 is cut off, and the feeding is stopped.

[0068] Further, in this specific embodiment, the specific structure of the material discharging device 2 is described in detail: the material discharging device 2 is as follows: Figure 3 As shown, it includes an upper flange 7 and a lower flange 10, between which a telescopic discharge pipe 9 and at least one transmission member 8 are arranged, and both ends of the telescopic discharge pipe 9 and the transmission member 8 are detachably fixed to the upper flange 7 and the lower flange 10, and the transmission member 8 is used to drive the lower flange 10 to move up and down. The telescopic discharge pipe 9 is extended or shortened following the lower flange 10 under the drive of the transmission member 8, and the sealing member 11 is detachably fixed to the bottom surface of the lower flange 10.

[0069] Specifically, the two ends of the telescopic discharge pipe 9 are respectively fixed to the upper flange 7 and the lower flange 10 by bolts, the two ends of the transmission member 8 are respectively fixed to the upper flange 7 and the lower flange 10 by bolts, and the sealing member 11 is fixed to the bottom surface of the lower flange 10 by bolts. Figure 3 As shown, two transmission members 8 are arranged between the upper flange 7 and the lower flange 10, and the two transmission members 8 are symmetrically arranged on both sides of the telescopic discharge pipe 9. The transmission member 8 is a pneumatic cylinder or a hydraulic cylinder, the sealing member 11 is a rubber sealing ring, and the conveying device 4 is a screw conveyor.

[0070] Furthermore, in this specific embodiment, the specific structure of the transmission member 8 in the unloading device 2 is described in detail:

[0071] The transmission member 8 is as follows Figure 4 and Figure 5As shown, it includes a pneumatic drive device 12, a two-position four-way solenoid valve 16, an intake pipe and an exhaust pipe, and the connection relationship is: the two ends of the shell of the pneumatic drive device 12 are independently connected to the two-position four-way solenoid valve 16, and the two-position four-way solenoid valve 16 is independently connected to the intake pipe and the exhaust pipe.

[0072] The pneumatic drive device 12 includes a cylinder and a piston assembly located inside the cylinder, and drives the piston assembly to reciprocate in the vertical direction in the pneumatic cylinder by switching the working state of the two-position four-way solenoid valve 16. The piston assembly specifically includes a piston and a piston rod, one end of the piston rod is connected to the piston, and the other end of the piston rod is hinged to the lower end flange 10. The piston rod is driven by pneumatic pressure to reciprocate in the cylinder, thereby driving the lower end flange 10 to move up and down.

[0073] A stroke channel and a return channel are arranged inside the two-position four-way solenoid valve 16. The stroke channel includes a stroke intake channel and a stroke exhaust channel. Figure 4 As shown, the stroke intake passage connects the intake pipeline and the A end of the air pressure driving device 12, and the stroke exhaust pipeline connects the exhaust pipeline and the B end of the air pressure driving device 12. The gas enters the A end of the air pressure driving device 12 from the intake pipeline through the stroke intake passage. The gas drives the piston assembly to push out of the cylinder to complete a stroke, and the gas at the B end of the air pressure driving device 12 is discharged from the exhaust pipeline through the stroke exhaust passage. The return channel includes a return intake passage and a return exhaust passage, as shown in FIG. Figure 5 As shown, the return air intake passage connects the air intake line and the B end of the air pressure drive device 12, and the return exhaust passage connects the exhaust line and the A end of the air pressure drive device 12. The gas enters the B end of the air pressure drive device 12 from the air intake line through the return air intake passage. The gas drives the piston assembly to be retracted into the cylinder to complete a return stroke, and the gas at the B end of the air pressure drive device 12 is discharged from the exhaust line through the return exhaust passage.

[0074] It should be noted that Figure 4 and Figure 5 The two positions of the two-position four-way solenoid valve 16 are shown in two different working states. The two positions of the two-position four-way solenoid valve 16 are not in a coexisting relationship. The position of the two-position four-way solenoid valve 16 needs to be electromagnetically controlled to achieve Figure 4 or Figure 5 The switching between the different working states shown in FIG. 1 and FIG. 2 further shows that if the two-position four-way solenoid valve 16 is in Figure 4 When the working position is shown, the piston assembly completes a stroke piston movement process, and the working position of the two-position four-way solenoid valve 16 is switched to Figure 5 As shown in the figure, the piston assembly completes a return piston movement process, repeating alternately. Figure 4 and Figure 5 When the piston is in two different working positions, continuous piston movement can be completed, thereby driving the lower flange 10 to move up and down.

[0075] The air intake pipeline includes an air intake main pipe and an overflow branch pipe, the inlet end of the overflow branch pipe is connected to the air intake branch pipe, the air intake main pipe is provided with a ball valve 14, and the overflow branch pipe is provided with a second overflow valve 13. A first overflow valve 15 is provided on the exhaust pipeline.

[0076] The intermittent feeding device also includes a transmission screw 3 located below the conveying device 4, which is used to drive the conveying device 4 to move along the transmission screw 3 so as to push the discharge port of the conveying device 4 into or out of the downstream section. The feed port 5 of the conveying device 4 is a conical funnel structure, and the transmission member 8 drives the sealing member 11 to move up and down so that the sealing member 11 is separated from or pressed against the feed port 5.

[0077] The intermittent feeding device also includes a control module, which is used to control the process of the transmission screw 3 driving the conveying device 4 and the process of the transmission member 8 driving the lower end flange 10 to move up and down.

[0078] In another specific embodiment, the present invention provides a method for using the intermittent feeding device, the method comprising:

[0079] (I) The transmission screw 3 drives the conveying device 4 to move until the discharge port of the conveying device 4 is pushed into the downstream section, and the transmission member 8 drives the lower flange 10 to move down to a preset low point. The sealing member 11 provided on the bottom surface of the lower flange 10 moves down accordingly until it butts against the feed port 5. The material stored in the silo 1 enters the conveying device 4 through the telescopic discharge pipe 9 and is sent to the downstream section by the conveying device 4 to complete the feeding;

[0080] (II) The transmission member 8 drives the lower flange 10 to move upward to a preset high point, and the sealing member 11 provided on the bottom surface of the lower flange 10 moves upward accordingly until it is completely separated from the feed port 5, and the transmission screw 3 drives the conveying device 4 to move until the conveying device 4 moves out of the downstream section as a whole, and the feeding is interrupted;

[0081] (III) Step (I) and step (II) are alternately performed to realize intermittent feeding. In addition, in step (I) and step (II), the transmission process of the transmission screw 3 and the driving process of the transmission member 8 are controlled by the control module.

[0082] It should be noted that, in this specific implementation, by Figure 4 and Figure 5 The transmission member 8 shown drives the lower flange 10 to move up and down. Figure 4 and Figure 5 The control process of the transmission member 8 driving the lower end flange 10 to move up and down is described in detail:

[0083] (1) When the two-position four-way solenoid valve 16 is in Figure 4At the position shown, the gas enters the A end of the pneumatic drive device 12 through the stroke intake passage from the ball valve 14 provided on the intake pipe, and the gas drives the piston assembly to push out the cylinder to complete a stroke, and the gas at the B end of the pneumatic drive device 12 flows through the stroke exhaust passage and the first overflow valve 15 on the exhaust pipe to be discharged;

[0084] (2) Switch the position of the two-position four-way solenoid valve 16 to Figure 5 In the position shown, the gas enters the B end of the pneumatic drive device 12 through the return air intake passage from the ball valve 14 provided on the air intake pipeline, and the gas drives the piston assembly to retract into the cylinder and reset to complete a return stroke. The gas at the A end of the pneumatic drive device 12 flows through the return exhaust passage through the first overflow valve 15 on the exhaust pipeline and is discharged;

[0085] (3) The position of the two-position four-way solenoid valve 16 is repeatedly switched to complete the alternation of the stroke and return stroke of the piston assembly, thereby driving the lower end flange 10 to move up and down.

[0086] Application Examples

[0087] The intermittent feeding device provided in the specific embodiment is used to load ammonium vanadate into the rotary kiln 6, and the loading process specifically includes:

[0088] (I) In the initial state, the rotary kiln 6 is in a horizontal position, and the transmission screw 3 pushes the feed port 5 of the conveying device 4 to the unloading position (directly below the discharge port of the silo 1). At this time, the discharge port of the conveying device 4 extends into the interior of the rotary kiln 6. The telescopic discharge pipe 9 is extended by the piston rod, and the piston rod pushes the lower end flange 10 downward, and the seal 11 at the bottom of the lower end flange 10 moves downward until it is tightly connected to the feed port 5 of the conveying device 4. The bottom valve of the silo 1 is opened, and the silo 1, the telescopic discharge pipe 9 and the conveying device 4 form a unloading channel. The ammonium vanadate stored in the silo 1 enters the conveying device 4 through the telescopic discharge pipe 9 and is delivered into the rotary kiln 6 by the conveying device 4;

[0089] (II) When it is necessary to stop loading ammonium vanadate into the rotary kiln 6, the bottom valve of the silo 1 is closed, the telescopic discharge pipe 9 is shortened under the pull of the piston rod, the piston rod pulls the lower flange 10 upward, and the sealing member 11 provided at the bottom of the lower flange 10 moves upward until it is completely separated from the feed port 5 of the conveying device 4. The transmission screw 3 returns the conveying device 4 to its original position, and the conveying device 4 withdraws from the rotary kiln 6 as a whole, and the feeding process ends.

[0090] (III) After the feeding is completed, ammonium vanadate is roasted at high temperature in the rotary kiln 6 to remove ammonia. After the roasting is completed, the feed end of the rotary kiln 6 is lifted to discharge the high-purity vanadium product, and then the rotary kiln 6 is lowered back to the horizontal position, and steps (I) and (II) are repeated.

[0091] The applicant declares that the above is only a specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Those skilled in the art should understand that any changes or substitutions that can be easily thought of by those skilled in the art within the technical scope disclosed by the present invention shall fall within the protection scope and disclosure scope of the present invention.

Claims

1. A method for using an intermittent feeding device, characterized in that: The method of use includes: (I) The transmission member drives the seal member to move downward so that the seal member docks with the feed port of the sealing conveying device, and the material stored in the silo passes through the telescopic discharge pipe and falls into the conveying device, and the material is delivered to the downstream section through the conveying device; (II) the transmission member drives the sealing member to move upward so that the sealing member is separated from the conveying device; The method is carried out by using an intermittent feeding device, wherein the intermittent feeding device is provided with a silo, a feeding device and a conveying device in sequence along the feeding direction, and the material stored in the silo passes through the feeding device and falls into the conveying device, and the conveying device delivers the material to the downstream section; The feeding device comprises a transmission member, a telescopic feeding tube and a sealing member, wherein one end of the telescopic feeding tube is connected to the material bin, and the other end is connected to the sealing member; the transmission member is used to drive the sealing member to move up and down so that the sealing member is separated from or connected to the feeding port of the conveying device; The intermittent feeding device also includes a transmission screw located below the conveying device, and the transmission screw is used to drive the conveying device to move along the transmission screw so as to push the discharge port of the conveying device into or out of the downstream section; when feeding is required, the transmission screw pushes the discharge port of the conveying device into the downstream section, the transmission member drives the seal to move downward to connect with the feed port of the conveying device, and the telescopic discharge pipe connects the silo and the conveying device; when feeding needs to be blocked, the transmission member drives the seal to move upward to disengage from the feed port of the conveying device, the transmission screw moves the conveying device out of the downstream section, and cuts off the connection between the telescopic discharge pipe and the conveying device.

2. The method according to claim 1, characterized in that: The conveying device is a screw conveyor.

3. The method according to claim 1, characterized in that The feed inlet of the conveying device is a funnel structure.

4. The method according to claim 1, characterized in that: The feeding device comprises an upper flange and a lower flange, a telescopic feeding pipe and at least one transmission member are arranged between the upper flange and the lower flange, the transmission member is used to drive the lower flange to move up and down, the telescopic feeding pipe follows the extension or shortening of the lower flange under the drive of the transmission member, and the sealing member is arranged on the bottom surface of the lower flange.

5. The method according to claim 1, characterized in that The two ends of the telescopic discharge pipe are detachably fixed to the upper end flange and the lower end flange by bolts.

6. The method according to claim 1, characterized in that The two ends of the transmission member are detachably fixed to the upper end flange and the lower end flange by bolts.

7. The method according to claim 1, characterized in that The sealing member is detachably fixed to the bottom surface of the lower end flange by bolts.

8. The method according to claim 4, characterized in that Two transmission parts are arranged between the upper end flange and the lower end flange, and the two transmission parts are symmetrically arranged on both sides of the telescopic discharge pipe.

9. The method according to claim 1, characterized in that: The transmission member is a pneumatic cylinder or a hydraulic cylinder.

10. The method according to claim 1, characterized in that The sealing element is a rubber sealing ring.

11. The method according to claim 1, characterized in that: The transmission part includes a pneumatic drive device, a two-position four-way solenoid valve, an intake pipeline and an exhaust pipeline. The two ends of the shell of the pneumatic drive device are independently connected to the two-position four-way solenoid valve, and the two-position four-way solenoid valve is independently connected to the intake pipeline and the exhaust pipeline.

12. The method according to claim 11, characterized in that The pneumatic drive device comprises a cylinder and a piston assembly located inside the cylinder.

13. The method according to claim 12, characterized in that The piston assembly comprises a piston and a piston rod, one end of the piston rod is connected to the piston, and the other end is connected to the lower flange. The piston rod is driven to reciprocate in the cylinder by air pressure, thereby driving the lower flange to move up and down.

14. The method according to claim 13, characterized in that The piston rod is hinged to the lower end flange.

15. The method according to claim 11, characterized in that The two-position four-way solenoid valve comprises a stroke channel and a return channel therein.

16. The method according to claim 15, characterized in that The stroke channel includes a stroke intake passage and a stroke exhaust passage. The stroke intake passage connects an intake pipeline and one end of the pneumatic driving device, and the stroke exhaust passage connects an exhaust pipeline and the other end of the pneumatic driving device. Gas enters one end of the pneumatic driving device from the intake pipeline through the stroke intake passage. The gas drives the piston assembly to push out the cylinder to complete a stroke. The gas at the other end of the pneumatic driving device is discharged from the exhaust pipeline through the stroke exhaust passage.

17. The method according to claim 15, characterized in that The return passage includes a return air intake passage and a return exhaust passage. The return air intake passage connects the air intake pipeline and one end of the air pressure driving device, and the return exhaust passage connects the exhaust pipeline and the other end of the air pressure driving device. The gas enters one end of the air pressure driving device from the air intake pipeline through the return air intake passage. The gas drives the piston assembly to be retracted into the cylinder to complete a return stroke. The gas at the other end of the air pressure driving device is discharged from the exhaust pipeline through the return exhaust passage.

18. The method according to claim 11, characterized in that The air intake pipeline comprises an air intake main pipe and an overflow branch pipe, the inlet end of the overflow branch pipe is connected to the air intake branch pipe, a ball valve is arranged on the air intake main pipe, and an overflow valve is arranged on the overflow branch pipe.

19. The method according to claim 11, characterized in that The exhaust pipeline is provided with an overflow valve.

20. The method according to claim 1, characterized in that The intermittent feeding device also includes a control module, which is used to control the process of the transmission screw driving the conveying device and the process of the transmission member driving the lower end flange to move up and down.

21. The method of use according to claim 1, characterized in that: Step (I) specifically comprises: The transmission screw drives the conveying device to move until the discharge port of the conveying device is pushed into the downstream section. The transmission part drives the lower end flange to move down to the preset low point. The sealing part set on the bottom surface of the lower end flange moves down accordingly until it butts against the feed port. The material stored in the silo enters the conveying device through the telescopic discharge pipe and is sent to the downstream section by the conveying device to complete the feeding.

22. The method according to claim 1, characterized in that Step (II) specifically includes: The transmission member drives the lower end flange to move up to a preset high point, and the sealing member arranged on the bottom surface of the lower end flange moves up accordingly until it is completely separated from the feed port, and the transmission screw drives the conveying device to move until the discharge port of the conveying device moves out of the downstream section, and the feeding is interrupted.

23. The method according to claim 1, characterized in that Intermittent feeding is achieved by alternately carrying out step (I) and step (II).

24. The method according to claim 20, characterized in that In step (I) and step (II), the transmission process of the transmission screw and the driving process of the transmission member are controlled by the control module.

Images