A drying room with a reciprocating feeding device

Abstract

A drying chamber with a reciprocating feeding device is disclosed. The drying chamber has a feed inlet at the top and a discharge outlet at the bottom. Inside the drying chamber are one or more material conveying platforms with ventilation slits. Below the lowest material conveying platform with ventilation slits, a reciprocating feeding device is provided, comprising: a seamless bottom plate; a parallel grid platform positioned above the seamless bottom plate; and a drive mechanism connected to the grid platform. The drive mechanism drives the grid platform to perform a reciprocating synchronous circular motion, causing the grid platform and the seamless bottom plate to periodically approach each other, contacting the material residue on the seamless bottom plate and pushing the residue to the discharge end for discharge from the discharge outlet. The seamless bottom plate of this invention can collect material residue, and when the grid platform performs the reciprocating circular motion, the material is crushed and pushed towards the discharge outlet. Regular manual cleaning of the bottom is eliminated, improving the automation and operational stability of the drying equipment.

Description

Technical Field

[0001] This invention belongs to the technical field of material drying equipment, specifically relating to a drying room with a reciprocating feeding device. Background Technology

[0002] Material drying equipment is widely used in the drying processes of industries such as chemical, food, pharmaceutical, and building materials. In the field of sludge treatment, the sludge cake produced by the sludge dewatering machine is granulated or made into strips and then falls freely onto a mesh conveyor belt. Through the conveying of multiple layers of reciprocating mesh belts, the moisture in the sludge cake on the mesh belt gradually evaporates, eventually forming a material with lower moisture content that is discharged.

[0003] Chinese invention patent ZL201910748719.6 discloses a peristaltic propulsion drying device, and Chinese invention patent ZL202010175357.9 discloses a material crushing and conveying module and its drying chamber. Currently, these existing drying devices (also known as "drying chambers") all have a problem with their conveying platforms: material residue and dust falling into the gaps of the conveying platform eventually fall to the bottom of the drying chamber, requiring regular cleaning. This is not only time-consuming and labor-intensive but also affects the working efficiency and operational stability of the drying chamber. Furthermore, the bottom of the drying chamber is the area with the highest hot air temperature, lowest humidity, and strongest wind, and it is currently not being utilized more effectively. Summary of the Invention

[0004] The technical problem to be solved by the present invention is to provide a drying chamber with a reciprocating feeding device, which can receive the slag and transport the slag out of the drying chamber.

[0005] This invention is implemented as follows:

[0006] A drying chamber with a reciprocating feeding device, wherein the top of the drying chamber is provided with a feeding port and the bottom is provided with a discharging port, and the interior of the drying chamber is provided with one or more material conveying platforms with ventilation slits;

[0007] Below the material conveying platform with ventilation slits at the bottom layer, there is a reciprocating feeding device. The material is conveyed to the discharge end through the reciprocating feeding device and discharged from the discharge port outside the drying room.

[0008] The reciprocating feeding device includes: a seamless base plate, and a parallel grid platform disposed above the seamless base plate; the grid platform is connected to a drive mechanism.

[0009] The drive mechanism drives the grid platform to perform reciprocating synchronous circular motion, causing the grid platform and the seamless base plate to periodically approach each other, touch the material residue on the seamless base plate, and push the material residue to the discharge end to be discharged from the discharge port.

[0010] Furthermore, the driving mechanism includes: a transmission mechanism, a guide plate, and a set of drive shafts; the set of drive shafts passes through the guide plate via a set of eccentric devices sleeved thereon; the grid platform is fixedly connected to the guide plate; the set of drive shafts is connected to a power source via the transmission mechanism; the set of drive shafts rotates at the same speed and in the same direction under the drive of the power source, driving the guide plate and the grid platform to perform reciprocating synchronous circular motion, so that the grid platform and the seamless base plate periodically approach each other.

[0011] Furthermore, the discharge end is equipped with a screw conveyor to transport the material to the outside of the drying chamber; the screw conveyor is used to receive the material fed from the seamless base plate, or to receive the material fed from the seamless base plate and the material falling from the end of the bottom material conveying platform.

[0012] Furthermore, the drying chamber has an air inlet at the bottom and an air outlet at the top; the seamless bottom plate and the grid platform are inclined upward from the direction of the air inlet.

[0013] Furthermore, the screw conveyor is inclined upwards.

[0014] Furthermore, the screw conveyor is a shaftless screw conveyor.

[0015] Furthermore, the material conveying platform with ventilation slots is a belt conveyor platform or a stacked strip propulsion conveyor platform.

[0016] Furthermore, the material conveying platform with ventilation slots is a slotted flat plate, and each of them is equipped with a grid platform that performs reciprocating circular motion for material feeding and transportation.

[0017] The advantages of this invention are:

[0018] 1. The seamless bottom plate can receive a portion of the small particles of material that fall through the gaps during the conveying process from the conveyor platform above it, as well as transfer material falling from the end of the conveyor platform. As the grid platform above the seamless bottom plate performs reciprocating circular motion, the material is crushed and propelled towards the discharge port. This allows most of the material on the seamless bottom plate to be discharged promptly, eliminating the need for regular manual cleaning of the bottom and improving the automation and operational stability of the drying equipment.

[0019] 2. It can make full use of the seamless base plate as an effective drying platform, thereby increasing the evaporation area and evaporation efficiency of the drying platform.

[0020] 3. During the reciprocating motion of the grating platform, the material can be further crushed, allowing it to be further broken down before discharge, which is conducive to further evaporation of moisture.

[0021] 4. The seamless base plate, sloping upwards from the air inlet, has an air guiding function, allowing hot air to be effectively and evenly delivered upwards. Furthermore, the fully open air inlet ensures a larger air volume and velocity.

[0022] 5. The screw conveyor tilts upwards to discharge material, allowing the material to exit at a certain height, which facilitates subsequent collection or transportation and reduces the overall height of the equipment. Attached Figure Description

[0023] The present invention will now be further described with reference to the accompanying drawings and embodiments.

[0024] Figure 1 This is a schematic diagram of the structure of the first embodiment of the present invention.

[0025] Figure 2 This is a schematic diagram of the grid platform structure in the first embodiment of the present invention.

[0026] Figure 3 This is a schematic diagram of the structure of the second embodiment of the present invention.

[0027] Figure 4 This is a schematic diagram of the grid platform structure in the second embodiment of the present invention.

[0028] Figure 5 This is a structural schematic diagram of the third embodiment of the present invention.

[0029] Figure 6 This is a schematic diagram of the structure of the slotted flat plate in the third embodiment of the present invention. Detailed Implementation

[0030] First embodiment:

[0031] like Figure 1 and Figure 2 As shown, a drying chamber 100 with a reciprocating feeding device is provided. The top of the drying chamber 100 is provided with a feeding port 1 and the bottom is provided with a discharging port 2. The drying chamber 100 is provided with multiple material conveying platforms 3 with ventilation gaps inside. A reciprocating feeding device 4 is provided below the bottom material conveying platform 3 with ventilation gaps. The material is conveyed to the discharge end through the reciprocating feeding device 4 and discharged from the discharge port 2 outside the drying chamber 100.

[0032] The reciprocating material feeding device 4 includes: a seamless base plate 41, and a parallel grid platform 42 disposed above the seamless base plate 41; the grid platform 42 is connected to a drive mechanism 5. The drive mechanism 5 drives the grid platform 42 to perform reciprocating synchronous circular motion, so that the grid platform 42 and the seamless base plate 41 periodically approach each other, touch the material residue on the seamless base plate 41, and push the material residue to the discharge end and discharge it from the discharge port 2.

[0033] The drive mechanism 5 includes: a transmission mechanism 51, a guide plate 52, and a set of drive shafts 53; the set of drive shafts 53 passes through the guide plate 52 via a set of eccentric devices 54 sleeved on it; the grid platform 42 is fixedly connected to the guide plate 52; the set of drive shafts 53 is connected to a power source (not shown) fixed outside the side wall of the drying room via the transmission mechanism 51; the set of drive shafts 53 rotates at the same speed and in the same direction under the drive of the power source, driving the guide plate 52 and the grid platform 42 to perform reciprocating synchronous circular motion, so that the grid platform 42 and the seamless base plate 41 periodically approach each other.

[0034] In this embodiment, the air inlet 6 of the drying chamber 100 is located at the bottom end, and the air outlet 7 is located at the top of the drying chamber 100. The seamless bottom plate 41 and the grid platform 42 are located at the air inlet 6 and are inclined upward from the direction of the air inlet 6, so that the hot air at the bottom can be fully utilized, the evaporation area and evaporation efficiency of the seamless bottom plate 41 can be improved, and the hot air can be more effectively and evenly transmitted upward.

[0035] The upper part of the seamless base plate 41 and the grid platform 42, which slopes upwards, is the discharge end. A screw conveyor 8 is installed at the discharge end to ensure that the material is discharged at a certain height, facilitating subsequent collection or transportation. The screw conveyor 8 is used to receive materials fed from the seamless base plate 41, or to receive materials fed from the seamless base plate 41 and materials falling from the end of the bottom material conveying platform 3.

[0036] The material conveying platform 3 with ventilation slots in this embodiment adopts the stacked strip pusher material conveying platform in a peristaltic pusher drying device disclosed in Chinese Invention Patent ZL201910748719.6. In this embodiment, the reciprocating feeding device and the bottommost stacked strip pusher material conveying platform above it share a power source and part of the transmission mechanism in a drive mechanism. In practice, the material conveying platform 3 with ventilation slots can also be a belt conveyor platform in the prior art.

[0037] Working process: The material enters from the feed inlet 1 of the drying chamber 100, and passes through the equalization mechanism and the strip-making mechanism in sequence, pressing the material into thin sheets or short strips. The material then falls onto the material conveying platform 3 (stacked strip propulsion material conveying platform) with ventilation slots. Through the back-and-forth conveying of the multi-layer grid platform, the residence time of the material in the drying chamber 100 is extended. During the conveying process of the material on the grid platform, some smaller particles of slag fall down from the grid gaps onto the seamless base plate 41, and are pushed onto the screw conveyor 8 located at the discharge end by the reciprocating synchronous circular motion of the grid platform 42. Most of the slag, through the grid platform, finally falls directly from the end of the bottom grid platform onto the screw conveyor 8, and is then conveyed to the discharge port by the screw conveyor 8 for discharge.

[0038] At the same time, hot air enters from the air inlet 6 at the bottom end, and a large amount of hot air is blown onto the inclined seamless base plate 41 and the grid platform 42, and then conveyed upward to evaporate the moisture of the material on the material conveying platform, and finally discharged from the return air inlet 7.

[0039] Second embodiment:

[0040] like Figure 3 and Figure 4 As shown, the difference between this embodiment and the first embodiment is that the air inlet 6 at the bottom of the drying room 100 is for air intake from the front. The seamless bottom plate 41 and the grid platform 42 located at the air inlet 6 are inclined upward from the direction of the air inlet 6. The screw conveyor 8 located at the discharge end is also inclined upward. This method can also make the material discharge at a certain height, which is convenient for subsequent collection or transportation.

[0041] Working process: The material enters from the feed inlet 1 of the drying chamber 100, and passes through the equalization mechanism and the strip forming mechanism in sequence, pressing the material into thin sheets or short strips. The material then falls onto the material conveying platform 3 (overlapping strip push-through material conveying platform) with ventilation gaps. Through the back-and-forth conveying of the multi-layer grid platform, the residence time of the material in the drying chamber 100 is extended. During the conveying process of the material on the grid platform, some smaller particles of material fall down from the grid gaps onto the seamless base plate 41, while most of the material, through the grid platform, eventually falls from the end of the bottom grid platform to one end of the seamless base plate 41. Both are pushed onto the screw conveyor 8 located at the discharge end by the reciprocating synchronous circular motion grid platform 42, and then the screw conveyor 8 transports the material to the discharge port for discharge.

[0042] At the same time, hot air enters from the bottom air inlet 6, and a large amount of hot air is blown onto the inclined seamless bottom plate 41 and the grid platform 42, and then conveyed upward to evaporate the moisture of the material on the material conveying platform, and finally discharged from the return air inlet 7.

[0043] Third embodiment:

[0044] like Figure 5 and Figure 6 As shown, this embodiment differs from the first embodiment in that the material conveying platform 3 with ventilation slots is a slotted flat plate with a grid platform on top that performs reciprocating synchronous circular motion for material feeding and transportation. The slotted flat plate has side panels on three sides to prevent material spillage, and the discharge end is open.

[0045] Working process: The material enters from the feed inlet 1 of the drying chamber 100, and passes through the equalization mechanism and the strip-making mechanism in sequence, pressing the material into thin sheets or short strips. The material then falls onto the material conveying platform 3 (a slotted flat plate with side panels at the beginning and sides) equipped with ventilation slots. The reciprocating grid platform moves the material back and forth across multiple slotted flat plates, extending its residence time within the drying chamber 100. During the conveying process on the slotted flat plates, some smaller particles fall through the gaps onto the seamless bottom plate 41, and are then pushed onto the screw conveyor 8 at the discharge end by the reciprocating synchronous circular motion of the grid platform 42. Most of the material, through the reciprocating synchronous circular motion of the grid platform above the slotted flat plates, ultimately falls directly from the end of the bottom slotted platform onto the screw conveyor 8, which then transports the material to the discharge port for discharge.

[0046] At the same time, hot air enters from the air inlet 6 at the bottom end, and a large amount of hot air is blown onto the inclined seamless base plate 41 and the grid platform 42, and then conveyed upward to evaporate the moisture of the material on the material conveying platform, and finally discharged from the return air inlet 7.

[0047] The above embodiments and figures are not intended to limit the product form and style of the present invention. Any appropriate changes or modifications made by those skilled in the art should be considered as not departing from the patent scope of the present invention.

Claims

1. A drying room with reciprocating raking device, the top of the drying room is provided with a feeding port, the bottom is provided with a discharging port, and the inside of the drying room is provided with one or more material conveying platforms with ventilation slots; characterized in that: a reciprocating raking device is arranged below the lowest material conveying platform with ventilation slots, and the material is conveyed to the discharging end by the reciprocating raking device and discharged out of the drying room through the discharging port; the reciprocating raking device comprises a seamless bottom plate, a grid platform arranged in parallel above the seamless bottom plate, and a driving mechanism connected to the grid platform; the driving mechanism drives the grid platform to make reciprocating synchronous circular motion, so that the grid platform and the seamless bottom plate periodically approach and touch the slag on the seamless bottom plate and rake the slag to the discharging end to be discharged through the discharging port; the driving mechanism comprises a transmission mechanism, a guide plate, and a set of driving shafts; the set of driving shafts are arranged on the guide plate through a set of eccentric devices sleeved thereon; the grid platform is fixedly connected to the guide plate; the set of driving shafts are connected to a power source through the transmission mechanism; the set of driving shafts make synchronous rotation under the driving of the power source, drive the guide plate and the grid platform to make reciprocating synchronous circular motion, so that the grid platform and the seamless bottom plate periodically approach. the discharging end is provided with a screw conveyor for conveying the material out of the drying room; the screw conveyor is used to receive the material raked from the seamless bottom plate, or the material raked from the seamless bottom plate and the material falling from the end of the lowest material conveying platform.

2. A drying chamber with reciprocating raking means as claimed in claim 1, characterized in that: the bottom of the drying room is provided with an air inlet, and the top is provided with an air outlet; the seamless bottom plate and the grid platform are inclined upward from the direction of the air inlet.

3. A drying chamber with reciprocating raking means as claimed in claim 2, characterized in that: the screw conveyor is inclined upward.

4. A drying chamber having a reciprocating raking device as claimed in claim 3, characterized in that: the screw conveyor is a shaftless screw conveyor.

5. A drying chamber having a reciprocating raking device as claimed in claim 2, characterized in that: the material conveying platform with ventilation slots is a belt conveying platform or a stacked strip advancing conveying platform.

6. A drying chamber having a reciprocating raking device as claimed in claim 1, characterized in that: the material conveying platform with ventilation slots is a slotted flat plate, and a grid platform above the slotted flat plate makes reciprocating circular motion to rake and convey the material.

7. A drying chamber having a reciprocating raking device as claimed in claim 1, characterized in that: ​

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