CN221289405U - Precoated sand heating recovery equipment - Google Patents

Abstract

The utility model provides precoated sand heating recovery equipment which comprises a frame, a heating outer cylinder arranged on the frame, and a rotary inner cylinder rotatably connected to the inside of the heating outer cylinder, wherein a heating belt is arranged on the inner wall of the lower part of the heating outer cylinder, a dispersing block for dispersing materials and a spiral blade for discharging the materials outwards are arranged on the inner wall of the rotary inner cylinder, the dispersing block is arranged close to the feeding end of the rotary inner cylinder, and the spiral blade is arranged close to the discharging end of the rotary inner cylinder. According to the precoated sand heating and recycling equipment provided by the utility model, when the rotary inner cylinder rotates positively, the dispersing blocks in the rotary inner cylinder can effectively disperse materials in the rotary inner cylinder, meanwhile, a larger contact area is formed between the materials and the dispersing blocks, so that the uniform heating of the materials is facilitated, and when the rotary inner cylinder rotates reversely, the spiral blades arranged at the discharge end of the rotary inner cylinder can discharge the materials outside the rotary inner cylinder, so that the discharge efficiency of the materials is improved, the uniform heating of the materials is realized, and the energy loss is reduced.

Description

Precoated sand heating recovery equipment

Technical Field

The utility model belongs to the technical field of precoated sand recovery, and particularly relates to precoated sand heating recovery equipment.

Background

The precoated sand is the best modeling and core making material of high-precision castings such as vehicles, hydraulic parts and the like, mainly adopts natural silica sand as a raw material, adds resin with specific performance, curing agent and the like to prepare a precoated sand model, then uses the model to pour to form the required castings, and finally takes out the castings by crushing the precoated sand. At present, the used precoated sand is generally transported to a designated place as solid waste, so that not only is the material wasted, but also the disposal fee can be charged, and the manufacturing cost of castings is increased.

Although equipment capable of carrying out heating treatment on the precoated sand to realize the reuse of the precoated sand appears, the equipment is generally low in heating efficiency and high in power consumption, and the problem that the recovery is not thorough due to uneven heating of the precoated sand often exists, so that the subsequent usability of the precoated sand is influenced, and the quality of castings is further influenced.

Disclosure of utility model

The utility model aims to provide precoated sand heating and recycling equipment, which can quickly and uniformly realize the heating and recycling of precoated sand, reduce the power consumption and improve the recycling efficiency.

In order to achieve the above purpose, the utility model adopts the following technical scheme: the precoated sand heating and recycling equipment comprises a frame, a heating outer cylinder arranged on the frame, and a rotary inner cylinder rotationally connected to the inside of the heating outer cylinder, wherein a heating belt is arranged on the inner wall of the lower part of the heating outer cylinder, a dispersing block for dispersing materials and a spiral blade for discharging the materials outwards are arranged on the inner wall of the rotary inner cylinder, the dispersing block is arranged close to the feeding end of the rotary inner cylinder, and the spiral blade is arranged close to the discharging end of the rotary inner cylinder;

The rotary inner cylinder is in a forward rotation state and a reverse rotation state, the dispersing blocks can stir and disperse materials when the rotary inner cylinder is in the forward rotation state, and the spiral blades can guide the materials in the rotary inner cylinder to be discharged outwards when the rotary inner cylinder is in the reverse rotation state.

In one possible implementation, the feed end of the rotary inner cylinder is provided with a bearing cylinder extending to the outside of the heating outer cylinder, the discharge end of the rotary inner cylinder is provided with a driving cylinder extending to the outside of the heating outer cylinder, and the frame is provided with a first bearing component for bearing the bearing cylinder, a second bearing component for bearing the driving cylinder and a driving component for driving the driving cylinder to rotate.

In some embodiments, the first support assembly comprises two support rollers rotatably connected to the frame, wherein the main shaft of the support roller is parallel to the main shaft of the rotary inner cylinder, and the two support rollers are respectively supported on two sides below the support cylinder and are respectively in rolling fit with the support cylinder.

In one possible implementation, the driving assembly includes a motor, a driving gear connected to an output end of the motor, and a gear ring sleeved on an outer shaft of the driving cylinder, where the motor can drive the driving gear to rotate to drive the rotating inner cylinder to rotate.

In one possible implementation, the second support assembly comprises two support gears rotatably connected to the frame, respectively, the two support gears being located on both sides below the drive cylinder, respectively, and being engaged with the gear ring, respectively.

In some embodiments, a feeding hopper and a discharging hopper are arranged on the frame, the feeding hopper is positioned at the feeding end of the rotary inner cylinder and extends into the rotary inner cylinder, the outer end of the driving cylinder is provided with an outwards opened conical cylinder, and the discharging hopper is positioned below the conical cylinder and is used for receiving materials discharged by the conical cylinder.

In one possible implementation, the dispersing block protrudes toward the axis of the rotary inner cylinder from the inner wall of the rotary inner cylinder, and has a dispersing tip and a collecting tip, the dispersing tip being disposed toward the direction of rotation of the rotary inner cylinder for dispersing the material, and the collecting tip being disposed toward the direction of rotation of the rotary inner cylinder.

In some embodiments, in the tangential direction of the rotating inner barrel, the extension length of the dispersing tip is greater than the extension length of the gathering tip, and the included angle formed by the two side walls of the dispersing tip is smaller than the included angle formed by the two side walls of the gathering tip.

In some embodiments, the dispersing blocks are arranged in a plurality of columns at intervals in the circumferential direction of the rotary inner cylinder, and each column of dispersing blocks comprises a plurality of dispersing blocks which are arranged at intervals along the axial direction of the rotary inner cylinder.

In one possible implementation manner, the heating outer cylinder comprises a lower half cylinder positioned at the lower part and an upper half cylinder detachably connected above the lower half cylinder, the lower half cylinder and the upper half cylinder are connected through a connecting piece, the heating belt is arranged in the lower half cylinder, and a heat preservation layer is further arranged in the lower half cylinder.

Compared with the prior art, the scheme disclosed by the embodiment of the application has the advantages that the heating of the materials in the rotary inner cylinder is realized by arranging the heating belt in the heating cylinder, when the rotary inner cylinder rotates positively, the dispersing blocks in the rotary inner cylinder can effectively disperse the materials in the rotary inner cylinder, meanwhile, the large contact area is formed between the materials and the dispersing blocks, the uniform heating of the materials is convenient to realize, and when the rotary inner cylinder rotates reversely, the spiral blades arranged at the discharge end of the rotary inner cylinder can discharge the materials outside the rotary inner cylinder, so that the discharge efficiency of the materials is improved, the uniform heating of the materials is realized, the recycling requirement of the materials is met, and the energy consumption is reduced.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present utility model, the drawings that are needed in the embodiments or the description of the prior art will be briefly described below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of precoated sand heating recovery equipment provided by an embodiment of the utility model;

FIG. 2 is a schematic view of a partial enlarged structure of I in FIG. 1 according to an embodiment of the present utility model;

FIG. 3 is a schematic cross-sectional view of A-A of FIG. 1 in accordance with an embodiment of the present utility model;

FIG. 4 is a schematic cross-sectional view of the rotary drum B-B of FIG. 1 according to an embodiment of the present utility model.

Wherein, each reference sign in the figure:

1. A frame; 11. a feed hopper; 12. discharging a hopper; 2. heating the outer cylinder; 21. a lower half cylinder; 22. an upper half cylinder; 23. a heating belt; 24. a heat preservation layer; 3. rotating the inner cylinder; 31. a bearing cylinder; 32. a drive cylinder; 33. a conical cylinder; 4. dispersing blocks; 41. a dispersing tip; 42. folding the tip; 5. a helical blade; 6. a first support assembly; 61. a carrier roller; 7. a second support assembly; 71. a bearing gear; 8. a drive assembly; 81. a motor; 82. a drive gear; 83. and a gear ring.

Detailed Description

In order to make the technical problems, technical schemes and beneficial effects to be solved more clear, the utility model is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the utility model.

It will be understood that when an element is referred to as being "disposed on" another element, it can be directly on the other element or be indirectly on the other element. It is to be understood that the terms "length," "width," "upper," "lower," "front," "rear," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate describing the present utility model and simplify the description, and do not indicate or imply that the devices or elements being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus are not to be construed as limiting the present utility model. The terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present utility model, the meaning of "a number" is two or more, unless explicitly defined otherwise.

Referring to fig. 1 to 4, the precoated sand heating and recycling apparatus provided by the utility model will now be described. The precoated sand heating and recycling equipment comprises a frame 1, a heating outer cylinder 2 arranged on the frame 1, and a rotary inner cylinder 3 rotatably connected to the inside of the heating outer cylinder 2, wherein a heating belt 23 is arranged on the inner wall of the lower part of the heating outer cylinder 2, a dispersing block 4 for dispersing materials and a spiral blade 5 for discharging the materials outwards are arranged on the inner wall of the rotary inner cylinder 3, the dispersing block 4 is arranged close to the feeding end of the rotary inner cylinder 3, and the spiral blade 5 is arranged close to the discharging end of the rotary inner cylinder 3;

Wherein, rotatory inner tube 3 has forward rotation state and reversal state, and when rotatory inner tube 3 was in forward rotation state, dispersion piece 4 can stir and disperse the material, and when rotatory inner tube 3 was in reversal state, spiral blade 5 can guide the material in the rotatory inner tube 3 outwards discharge.

Compared with the prior art, the precoated sand heating recovery device provided by the embodiment realizes the heating to the material inside the rotary inner cylinder 3 by arranging the heating belt 23 in the heating cylinder, when the rotary inner cylinder 3 rotates positively, the dispersing block 4 in the rotary inner cylinder 3 can effectively disperse the material inside, meanwhile, the material and the dispersing block 4 have larger contact area, so that the uniform heating to the material is realized, when the rotary inner cylinder 3 rotates reversely, the spiral blade 5 arranged at the discharge end of the rotary inner cylinder 3 can discharge the material outside the rotary inner cylinder 3, the discharge efficiency of the material is improved, the uniform heating of the material is realized, the recovery requirement of the material is met, and the loss of energy is reduced.

In one possible implementation, referring to fig. 1 to 4, the feeding end of the rotary drum 3 is provided with a support drum 31 extending to the outside of the heating drum 2, the discharging end of the rotary drum 3 is provided with a driving drum 32 extending to the outside of the heating drum 2, and the frame 1 is provided with a first support member 6 for supporting the support drum 31, a second support member 7 for supporting the driving drum 32, and a driving member 8 for driving the driving drum 32 to rotate.

In this embodiment, the lower parts of the supporting cylinders 31 and the driving cylinders 32 disposed at two ends of the rotary inner cylinder 3 are respectively supported by the first supporting group member and the second supporting member 7, so as to satisfy the requirement of the supporting of the rotary inner cylinder 3. On this basis, still set up drive assembly 8 at the discharge end of rotatory inner tube 3, utilize drive assembly 8 to drive the forward rotation or the reverse rotation of drive tube 32 to realize the operation of forward dispersed material or reverse unloading material, easy operation is swift, helps improving heating efficiency and unloading efficiency.

In some embodiments, referring to fig. 1 to 4, the first supporting member 6 comprises two supporting rollers 61 rotatably connected to the frame 1, the main axes of the supporting rollers 61 are parallel to the main axis of the rotary inner cylinder 3, and the two supporting rollers 61 are respectively supported on two sides below the supporting cylinder 31 and are respectively in rolling fit with the supporting cylinder 31.

In this embodiment, the first supporting member 6 comprises two supporting rollers 61, which are supported below the supporting cylinder 31 by supporting rollers 61, and are in rolling fit with each other, so that the feeding end of the rotary inner cylinder 3 is reliably supported, and the rotary inner cylinder 3 is ensured to be capable of orderly rotating under the drive of the driving member 8.

In a possible implementation, referring to fig. 1 to 4, the driving assembly 8 includes a motor 81, a driving gear 82 connected to an output end of the motor 81, and a gear ring 83 sleeved on an outer shaft of the driving cylinder 32, where the motor 81 can drive the driving gear 82 to rotate to drive the rotating inner cylinder 3 to rotate.

In this embodiment, the motor 81 is utilized to drive the driving gear 82 to rotate, and then the driving gear 82 drives the gear ring 83 meshed with the driving gear 82 to rotate, so as to finally achieve the effect of driving the driving cylinder 32 and the rotating inner cylinder 3 to rotate forward or reversely, so that materials are uniformly dispersed in the rotating inner cylinder 3 in the forward rotating state, the dispersing blocks 4 are fully dispersed, the heating uniformity of the materials is improved, or the materials are guided out in the reverse rotating state.

In one possible implementation, referring to fig. 1 to 4, the second support assembly 7 comprises two support gears 71 rotatably connected to the frame 1, the two support gears 71 being located on opposite sides of the lower portion of the driving cylinder 32 and engaging with the gear ring 83.

In this embodiment, the two supporting gears 71 of the second supporting member 7 are supported on two sides below the gear ring 83, and the supporting gears 71 are meshed with the gear ring 83, so that the rotating inner cylinder 3 can be reliably supported below the driving cylinder 32 when rotating, thereby ensuring the orderly rotation of the rotating inner cylinder 3.

On this basis, referring to fig. 1 to 4, a feeding hopper 11 and a discharging hopper 12 are arranged on the frame 1, the feeding hopper 11 is positioned at the feeding end of the rotary inner cylinder 3 and extends into the rotary inner cylinder 3, the outer end of the driving cylinder 32 is provided with a conical cylinder 33 with an outward opening, and the discharging hopper 12 is positioned below the conical cylinder 33 and is used for receiving materials discharged by the conical cylinder 33.

The discharge hopper 12 extends from the outside to the inside of the rotary inner cylinder 3 and below, and can feed the material into the rotary inner cylinder 3. The cone 33 is connected to the outer end of the driving cylinder 32, and the opening is flared toward the outer periphery, so that the orderly discharge of materials can be realized. The discharge hopper 12 is located below the cone 33 and the discharge hopper 12 is used to feed material to subsequent equipment.

In one possible implementation, referring to fig. 1 to 4, the dispersing block 4 protrudes toward the axis of the rotary inner cylinder 3 from the inner wall of the rotary inner cylinder 3, and the dispersing block 4 has a dispersing tip 41 and a collecting tip 42, where the dispersing tip 41 is disposed toward the direction of rotation of the rotary inner cylinder 3 for dispersing the material, and the collecting tip 42 is disposed toward the direction of rotation of the rotary inner cylinder 3.

In this embodiment, the dispersing block 4 has a dispersing tip 41 and a folding tip 42, and when the rotary inner cylinder 3 rotates forward, the dispersing tip 41 disperses and guides the material to two sides, and simultaneously makes the material fully contact with the side wall of the dispersing block 4, thereby improving the heat transfer efficiency and enhancing the heating effect. When the material reaches the position of the gathering tip 42, the material is gradually distributed on the inner wall of the rotary inner cylinder 3 by the guide of the gathering tip 42 until the material contacts with the next dispersing tip 41, and then the material is dispersed.

In some embodiments, referring to fig. 1-4, in the tangential direction of the rotating inner barrel 3, the spreading tips 41 extend over a greater length than the gathering tips 42; the two side walls of the dispersing tip 41 form an angle smaller than the two side walls of the gathering tip 42.

In this embodiment, the extension length of the dispersing tip 41 is longer, so that a larger cross-sectional area can be used to contact with the material, and the length of the furling interval is shorter, so that the dispersed material is uniformly distributed on the inner wall of the rotary inner cylinder 3, the contact between the material and different parts is realized, and the heat transfer efficiency is improved.

In some embodiments, referring to fig. 1 to 4, the dispersing blocks 4 are arranged in a plurality of columns at intervals in the circumferential direction of the rotary inner cylinder 3, and each column of dispersing blocks 4 includes a plurality of dispersing blocks 4 arranged at intervals along the axial direction of the rotary inner cylinder 3. The materials are dispersed through a plurality of dispersing blocks 4 distributed on the inner wall of the rotary inner cylinder 3, so that the uniformity of dispersion is improved.

In a possible implementation, referring to fig. 1 to 4, the heating outer cylinder 2 includes a lower half cylinder 21 located at a lower portion and an upper half cylinder 22 detachably connected above the lower half cylinder 21, the lower half cylinder 21 and the upper half cylinder 22 are connected by a connecting piece, a heating belt 23 is disposed in the lower half cylinder 21, and an insulation layer 24 is further disposed in the lower half cylinder 21. The heating outer cylinder 2 adopts a mode that the lower half cylinder 21 and the upper half cylinder 22 are combined with each other, and the lower half cylinder 21 and the upper half cylinder 22 are connected by a connecting piece, so that the assembly of the structure and the subsequent overhaul are facilitated. The heating belt 23 is concentrated in the lower half cylinder 21, and the precoated sand mainly flows out of the lower part of the rotary inner cylinder 3 under the action of gravity, and can be sufficiently heated by the heating belt 23. The heat preservation layer 24 can avoid heat loss and improve the utilization rate of electric energy.

In the use process, after the feeding hopper 11 is used for feeding, the rotary inner cylinder 3 is controlled to rotate forwards for 6-8 minutes, so that materials are fully heated in the rotary inner cylinder 3, then the rotary inner cylinder 3 is controlled to rotate forwards, the spiral blades 5 are used for driving the materials to be discharged to the discharge hopper 12 through the conical cylinder 33, and the materials are discharged. The heating process consumes about 60 degrees of electric quantity, so that a large amount of energy consumption is saved compared with the traditional recovery mode, and the recovery efficiency of precoated sand is improved.

The foregoing description of the preferred embodiments of the utility model is not intended to be limiting, but rather is intended to cover all modifications, equivalents, and alternatives falling within the spirit and principles of the utility model.

Claims (10)

1. The precoated sand heating and recycling equipment is characterized by comprising a rack, a heating outer cylinder arranged on the rack, and a rotary inner cylinder rotationally connected to the inside of the heating outer cylinder, wherein a heating belt is arranged on the inner wall of the lower part of the heating outer cylinder, a dispersing block for dispersing materials and a spiral blade for discharging the materials outwards are arranged on the inner wall of the rotary inner cylinder, the dispersing block is arranged close to the feeding end of the rotary inner cylinder, and the spiral blade is arranged close to the discharging end of the rotary inner cylinder;

The rotary inner cylinder is provided with a forward rotation state and a reverse rotation state, the dispersing blocks can stir and disperse materials when the rotary inner cylinder is in the forward rotation state, and the spiral blades can guide the materials in the rotary inner cylinder to be discharged outwards when the rotary inner cylinder is in the reverse rotation state.

2. The precoated sand heat recovery apparatus of claim 1 wherein the feed end of said rotary inner barrel is provided with a support barrel extending to the exterior of said heating outer barrel, the discharge end of said rotary inner barrel is provided with a drive barrel extending to the exterior of said heating outer barrel, and said housing is provided with a first support assembly for supporting said support barrel, a second support assembly for supporting said drive barrel, and a drive assembly for rotating said drive barrel.

3. The precoated sand heat recovery apparatus of claim 2 wherein said first backup assembly comprises two backup rolls rotatably connected to said frame, said backup rolls having a major axis parallel to said major axis of said rotatable inner cylinder, said backup rolls being supported on opposite sides of said backup cylinder and in rolling engagement with said backup cylinder.

4. The precoated sand heating and recycling apparatus according to claim 2, wherein the driving assembly comprises a motor, a driving gear connected to an output end of the motor, and a gear ring sleeved on an outer shaft of the driving cylinder, and the driving gear can be driven to rotate to drive the rotating inner cylinder.

5. The precoated sand heat recovery apparatus of claim 4 wherein said second support assembly comprises two support gears rotatably connected to said frame, respectively, said support gears being positioned on opposite sides of said lower portion of said drive cylinder and engaged with said gear ring, respectively.

6. The coated sand heating and recycling device according to claim 2, wherein a feed hopper and a discharge hopper are arranged on the frame, the feed hopper is positioned at the feed end of the rotary inner cylinder and extends into the rotary inner cylinder, the outer end of the driving cylinder is provided with a conical cylinder with an outward opening, and the discharge hopper is positioned below the conical cylinder and is used for receiving materials discharged by the conical cylinder.

7. The coated sand heating recovery apparatus of any one of claims 1-6, wherein the dispersion block protrudes from the inner wall of the rotary inner cylinder toward the axial center side of the rotary inner cylinder, the dispersion block has a dispersion tip and a gathering tip, the dispersion tip is disposed toward the direction of rotation of the rotary inner cylinder for dispersing material, and the gathering tip is disposed toward the direction of rotation of the rotary inner cylinder.

8. The coated sand heating recovery apparatus of claim 7, wherein the spreading tip has a greater extension than the gathering tip in a tangential direction of the rotating inner barrel, and wherein the included angle formed by the two sidewalls of the spreading tip is less than the included angle formed by the two sidewalls of the gathering tip.

9. The coated sand heating recovery apparatus of claim 8, wherein the dispersion blocks are arranged in a plurality of rows spaced apart in a circumferential direction of the rotating inner cylinder, each row of dispersion blocks comprising a plurality of dispersion blocks arranged in a spaced apart relationship in an axial direction of the rotating inner cylinder.

10. The coated sand heating recovery apparatus according to any one of claims 1 to 5, wherein the heating outer cylinder comprises a lower half cylinder at a lower part and an upper half cylinder detachably connected above the lower half cylinder, the lower half cylinder and the upper half cylinder are connected by a connecting piece, the heating belt is arranged in the lower half cylinder, and an insulation layer is further arranged in the lower half cylinder.