Finished product drying equipment for feed processing

Abstract

The utility model relates to finished product drying equipment for feed processing. Comprising a main rack, a lower collecting box structure and an upper protective cover structure which are in butt joint and buckled are installed on the main rack, a screening cylinder device which is obliquely arranged is installed in an inner cavity defined by the lower collecting box structure and the upper protective cover structure, the feeding end of the screening cylinder device is higher than the discharging end of the screening cylinder device, and a plurality of screening holes distributed in the axial direction are formed in the peripheral wall of the screening cylinder device. The screen holes are gradually enlarged from the feeding end to the discharging end; a tail end discharge hopper inserted with a valve plate and a plurality of groups of classified discharge hoppers are arranged at the lower part of the lower collecting box structure; the hollow rotating shaft coaxially penetrates through the screening barrel device and is fixedly connected with the screening barrel device, a plurality of air holes are formed in the peripheral wall of the hollow rotating shaft, and a passage rotating joint is mounted at an air inlet port of the hollow rotating shaft; the device further comprises a rotary driving device. And the heat recovery device is communicated and connected with an inner cavity defined by the lower collecting box structure and the upper protective cover structure. The feed drying and grading screening device can conduct drying and grading screening operation on feed synchronously, avoids drying of feed of different particle sizes together, improves drying efficiency, can conduct heat recovery operation on hot air, reduces production and processing cost, and accords with environmental consciousness.

Description

Technical Field

[0001] The utility model belongs to the technical field of drying equipment, in particular to finished product drying equipment for feed processing. Background Art

[0002] Feed is a general term for food for raised animals. In a narrower sense, feed mainly refers to food for animals raised in agriculture or animal husbandry. Feed includes more than ten varieties of feed raw materials such as soybeans, soybean meal, corn, fish meal, amino acids, miscellaneous meal, whey powder, oils, meat and bone meal, grains, and feed additives.

[0003] At present, more and more livestock are being raised. With the progress of society, the artificial breeding industry has developed greatly, and the demand for breeding is increasing. The process of feed production includes raw material cleaning, crushing or grinding, mixing, granulation, drying and packaging. In the process of feed production, drying is required for easy preservation.

[0004] The existing drying equipment does not distinguish when drying the produced feed. Most of them dry feeds of different particle sizes uniformly. The water content of feeds of different particle sizes is different, so the required drying time is also different. Drying feeds of different particle sizes together reduces the overall drying efficiency. Moreover, the existing drying devices have a single function and are not convenient for screening. In addition, during the drying process, the hot air after drying the feed is often discharged directly. Since the hot air after drying still has a certain amount of heat, direct discharge will cause heat loss, which indirectly increases the production and processing costs of the enterprise. Therefore, it is urgent to design a finished product drying equipment for feed processing to solve the above problems. Utility Model Content

[0005] The utility model provides a finished product drying device for feed processing with a reasonable structural design to solve the technical problems existing in the known technology. The utility model can simultaneously dry and screen the feed, and recover the heat of the hot air after drying, thereby reducing the production and processing costs of the enterprise and meeting the environmental awareness.

[0006] The utility model adopts the following technical scheme to solve the technical problems existing in the known technology: a finished product drying equipment for feed processing comprises a main frame, a lower collecting box structure and an upper shield structure which are butt-jointed are installed on the main frame, a screening drum device which is inclined and has a feed end higher than a discharge end is installed in the inner cavity surrounded by the lower collecting box structure and the upper shield structure, a plurality of sieve holes distributed in the axial direction are opened on the outer peripheral wall of the screening drum device, and the plurality of sieve holes gradually increase in size from the feed end to the discharge end; a terminal discharge hopper and a plurality of groups of classification discharge hoppers are arranged at the lower part of the lower collecting box structure, Valve plates are inserted on the terminal discharge hopper and each classification discharge hopper; it also includes a hollow rotating shaft coaxially arranged in the screening drum device and fixedly connected thereto, a plurality of air holes distributed along its axial direction are opened on the outer peripheral wall of the hollow rotating shaft, and a passage rotating joint is installed on the air inlet port of the hollow rotating shaft; it also includes a rotating drive device for driving the hollow rotating shaft to rotate; it also includes a recovery bracket installed on the main frame, on which a heat recovery device connected to the inner cavity surrounded by the lower collecting box structure and the upper shield structure is installed, for recovering heat in the hot air after drying.

[0007] The advantages and positive effects of the utility model are as follows: the utility model provides a finished product drying equipment for feed processing. By arranging a hollow rotating shaft and a passage rotating joint, drying gas can be filled into the space formed by the lower collecting box structure and the upper shield structure, and then the material is dried; by arranging a screening drum device connected to the hollow rotating shaft, it can be ensured that the screening drum device can rotate synchronously with the rotation of the hollow rotating shaft, and then the material poured into the screening drum device is turned over and graded and screened, and the material can be dried with the drying gas sprayed from the hollow rotating shaft. In view of the fact that the several sieve holes opened on the screening drum device gradually increase from the feed end to the discharge end, the particle size of the material is proportional to the duration of the drying time, thereby avoiding the drying of feeds of different particle sizes together for the same duration, and improving the overall drying efficiency; by arranging a heat recovery device, the hot air after drying can be recovered to avoid the loss of heat caused by direct discharge of hot air, thereby reducing the production and processing costs of the enterprise and complying with environmental awareness.

[0008] Preferably: the heat recovery device includes a heat exchange box installed on a recovery bracket, and a heat exchanger is installed in the heat exchange box; an air outlet and an air inlet are respectively installed at the two open ends of the heat exchange box, and the air outlet and the air inlet are both tapered, and an induced draft fan is installed at the tapered end of the air outlet, and an air inlet pipe is installed at the tapered end of the air inlet, and the air inlet pipe is connected to the inner cavity surrounded by the lower collecting box structure and the upper shield structure; and also includes an air outlet pipe installed at the air outlet end of the induced draft fan.

[0009] Preferably: the screening drum device comprises a front drying drum, a first screen drum, a second screen drum and a third screen drum which are connected and installed in sequence from the feed end to the discharge end; a plurality of screen holes are opened on the outer peripheral walls of the first screen drum, the second screen drum and the third screen drum and the screen holes increase in sequence, and a plurality of groups of circumferentially distributed radiation connecting rods are installed at the ports of each screen drum and the front drying drum, and the inner end of each radiation connecting rod is fixedly connected to the outer peripheral wall of the hollow rotating shaft.

[0010] Preferably: a front feed inlet is installed at the feed inlet of the front drying cylinder, and the front feed inlet is tapered; and a terminal discharge port is installed at the discharge port of the third screen cylinder.

[0011] Preferably: it also includes a feed hopper installed on the lower collecting box structure through a support rod, and the discharge port of the feed hopper extends into the front feed port and is gap-matched with the front feed port.

[0012] Preferably: the lower collecting box structure includes a collecting box body installed on the main frame, a terminal discharge hopper and multiple groups of classification discharge hoppers are installed at the bottom of the collecting box body and connected to its inner cavity, the multiple groups of classification discharge hoppers correspond to the first screen cylinder, the second screen cylinder and the third screen cylinder respectively, and the terminal discharge hopper corresponds to the terminal discharge port; it also includes an terminal baffle installed in the inner cavity of the collecting box body corresponding to the terminal discharge hopper, which is used to guide the material falling from the terminal discharge port into the terminal discharge hopper.

[0013] Preferably: the rotary drive device includes a rotary motor installed on the main frame, a driving sprocket is keyed to the output shaft of the rotary motor, and also includes a driven sprocket keyed to the air inlet end of the hollow shaft, and a transmission chain is installed between the driving sprocket and the driven sprocket. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a schematic diagram of the main cross-sectional structure of the utility model;

[0015] Figure 2 It is a three-dimensional structural schematic diagram of the internal main body part of the utility model;

[0016] Figure 3 It is a three-dimensional structural schematic diagram of the lower collecting box structure in the utility model;

[0017] Figure 4 It is a three-dimensional structural schematic diagram of the heat recovery device in the utility model.

[0018] In the figure: 1. General frame; 2. Lower collecting box structure; 2-1. Terminal discharge hopper; 2-2. Classification discharge hopper; 2-3. Collecting box body; 2-4. Terminal baffle; 3. Passage rotary joint; 4. Rotary drive device; 4-1. Driven sprocket; 4-2. Driving sprocket; 4-3. Rotating motor; 5. Feed hopper; 6. Screening drum device; 6-1. First screen drum; 6-2. Second screen drum; 6-3. Third screen drum; 6-4. Terminal discharge port; 6-5. Radiation connecting rod; 6-6. Front drying drum; 6-7. Front feed port; 7. Upper shield structure; 8. Recovery bracket; 9. Heat recovery device; 9-1. Air outlet pipe; 9-2. Draft fan; 9-3. Air outlet; 9-4. Heat exchange box; 9-5. Air inlet; 9-6. Air inlet pipe; 10. Hollow shaft; DETAILED DESCRIPTION

[0019] In order to further understand the content, features and effects of the present invention, the following embodiments are described in detail as follows:

[0020] See also Figure 1 The finished product drying equipment for feed processing of the utility model comprises a main frame 1, on which a lower collecting box structure 2 and an upper shield structure 7 are mounted, and an inclined screening drum device 6 is mounted in the inner cavity surrounded by the lower collecting box structure 2 and the upper shield structure 7, and the feed end of the screening drum device 6 is higher than the discharge end. A plurality of sieve holes distributed along the axial direction are provided on the outer peripheral wall of the screening drum device 6, and the plurality of sieve holes gradually increase from the feed end to the discharge end. In addition, in order to drive the sieving drum device 6 to rotate, the present embodiment also includes a hollow rotating shaft 10 coaxially arranged in the sieving drum device 6 and fixed thereto, a plurality of air holes distributed along its axial direction are opened on the outer peripheral wall of the hollow rotating shaft 10, and a passage rotating joint 3 is installed at the air inlet port of the hollow rotating shaft 10, and the passage rotating joint 3 is connected to the heat source gas through other pipelines and an air pump; in addition, the above-mentioned hollow rotating shaft 10 is rotatably connected to the lower collecting box structure 2 through a seated rolling bearing, the lower port of the hollow rotating shaft 10 is closed, and the high port of the hollow rotating shaft 10 is open and connected to the passage rotating joint 3. The present embodiment also includes a rotation driving device 4 for driving the hollow rotating shaft 10 to rotate.

[0021] like Figure 2 As shown, the above-mentioned rotating drive device 4 includes a rotating motor 4-3 installed on the main frame 1, a driving sprocket 4-2 is keyed to the output shaft of the rotating motor 4-3, and also includes a driven sprocket 4-1 keyed to the air intake end of the hollow rotating shaft 10, and a transmission chain is installed between the driving sprocket 4-2 and the driven sprocket 4-1.

[0022] Further information Figure 2In this embodiment, the above-mentioned screening drum device 6 includes a front drying drum 6-6, a first screen drum 6-1, a second screen drum 6-2 and a third screen drum 6-3 which are sequentially connected and installed from the feed end to the discharge end; a plurality of screen holes are opened on the outer peripheral walls of the first screen drum 6-1, the second screen drum 6-2 and the third screen drum 6-3, and the screen holes are increased in sequence, and a plurality of groups of circumferentially distributed radiation connecting rods 6-5 are installed at the ports of each screen drum and the front drying drum 6-6, and the inner end of each radiation connecting rod 6-5 is fixedly connected to the outer peripheral wall of the hollow rotating shaft 10.

[0023] In addition, a front feed port 6-7 is installed at the feed port of the front drying cylinder 6-6, and the front feed port 6-7 is tapered; a terminal discharge port 6-4 is installed at the discharge port of the third screen cylinder 6-3. Figure 1 and Figure 2 This embodiment also includes a feed hopper 5 installed on the lower collecting box structure 2 through a support rod, and the discharge port of the feed hopper 5 extends into the front feed port 6-7 and is gap-matched with the front feed port 6-7.

[0024] like Figure 3 As shown, in this embodiment, the above-mentioned lower collecting box structure 2 includes a collecting box body 2-3 installed on the main frame 1, and the bottom of the collecting box body 2-3 is connected to the terminal discharge hopper 2-1 and multiple groups of classification discharge hoppers 2-2. Among them, the above-mentioned multiple groups of classification discharge hoppers 2-2 correspond to the first screen cylinder 6-1, the second screen cylinder 6-2 and the third screen cylinder 6-3 respectively, and the terminal discharge hopper 2-1 corresponds to the terminal discharge port 6-4; the lower collecting box structure 2 also includes an end baffle 2-4 corresponding to the terminal discharge hopper 2-1 installed in the inner cavity of the collecting box body 2-3. In the actual working process, the above-mentioned end baffle 2-4 is used to guide the materials dropped from the terminal discharge port 6-4 into the terminal discharge hopper 2-1. A collecting box for receiving materials is placed below the discharge ports of the terminal discharge hopper 2-1 and each classification discharge hopper 2-2.

[0025] In addition, valve plates are inserted on the terminal discharge hopper 2-1 and each classification discharge hopper 2-2. In the actual working process, the discharge of different types of materials after screening can be controlled by pulling out and inserting the corresponding valve plates, thereby controlling the discharge timing of different types of materials to achieve the purpose of controlling the drying time of different types of materials.

[0026] In order to recover the heat in the drying gas, such as Figure 1 As shown, this embodiment also includes a recovery bracket 8 installed on the main frame 1, and a heat recovery device 9 is installed on the recovery bracket 8 and is connected to the inner cavity surrounded by the lower collection box structure 2 and the upper shield structure 7 for recovering heat from the hot air after drying.

[0027] like Figure 4As shown, the heat recovery device 9 includes a heat exchange box 9-4 installed on the recovery bracket 8, and a heat exchanger is installed in the heat exchange box 9-4. The heat exchanger adopts a finned tube heat exchanger, which is a prior art and can be purchased on the market. An air outlet 9-3 and an air inlet 9-5 are respectively installed at the two open ends of the heat exchange box 9-4. The air outlet 9-3 and the air inlet 9-5 are both tapered. An induced draft fan 9-2 is installed at the contracted end of the air outlet 9-3, and an air inlet pipe 9-6 is installed at the contracted end of the air inlet 9-5. The air inlet pipe 9-6 is connected to the inner cavity surrounded by the lower collecting box structure 2 and the upper shield structure 7; and also includes an air outlet pipe 9-1 installed at the air outlet end of the induced draft fan 9-2.

[0028] Working principle:

[0029] In the actual working process, the material is poured into the feed hopper 5, and the material falls from the discharge port of the feed hopper 5 into the screening drum device 6, and at the same time, the hollow shaft 10 drives the screening drum device 6 to rotate; the material falling into the screening drum device 6 is first turned over in the front drying drum 6-6, and at this time, drying gas is introduced into the hollow shaft 10, and the drying gas is sprayed from the air holes opened on the hollow shaft 10 to the material to be dried, and the material is dried. With the rotation of the screening drum device 6, the material gradually flows forward and downward, and then enters the first screening drum 6-1, the second screening drum 6-2 and the first screening drum 6-3, which are connected and installed in sequence. Three sieve drums 6-3, particles with smaller particle sizes fall from the sieve holes opened on the first sieve drum 6-1 to the corresponding classification discharge hopper 2-2. As the sieve drum device 6 rotates, particles of different particle sizes fall into the corresponding sieve holes and into the corresponding classification discharge hopper 2-2. Finally, particles of the largest particle size fall from the discharge port of the terminal discharge port 6-4 to the terminal discharge hopper 2-1. At the same time, the valve plates on each discharge hopper can be inserted and pulled according to the actual drying time requirements, thereby controlling the retention time of materials of different particle sizes in the lower collecting box structure 2, so as to achieve the purpose of controlling the drying time of materials of different particle sizes.

[0030] During the drying process, the induced draft fan 9-2 in the heat recovery device 9 can introduce the hot air after drying into the air inlet pipe 9-6, and flow into the heat exchange box 9-4 through the air inlet pipe 9-6 and the air inlet 9-5. The hot air flows through the heat exchanger in the heat exchange box 9-4 to absorb the residual heat in the hot air, thereby realizing heat recovery. The gas after heat recovery is discharged from the air outlet pipe 9-1.

Claims

1. A finished product drying equipment for feed processing, characterized by: The invention comprises a main frame (1), a lower collecting box structure (2) and an upper shield structure (7) which are butt-jointed and mounted on the main frame (1), a sieving drum device (6) which is arranged obliquely and has a feed end higher than a discharge end is mounted in the inner cavity surrounded by the lower collecting box structure (2) and the upper shield structure (7), a plurality of sieve holes distributed along the axial direction are provided on the outer peripheral wall of the sieving drum device (6), and the plurality of sieve holes gradually increase in size from the feed end to the discharge end; a terminal discharge hopper (2-1) and a plurality of groups of classification discharge hoppers (2-2) are arranged at the lower part of the lower collecting box structure (2), and a plurality of groups of classification discharge hoppers (2-2) are inserted in the terminal discharge hopper (2-1) and each of the classification discharge hoppers (2-2) The invention also comprises a valve plate; a hollow rotating shaft (10) coaxially arranged in the screening drum device (6) and fixedly connected thereto; a plurality of air holes distributed along its axial direction are opened on the outer peripheral wall of the hollow rotating shaft (10); a passage rotating joint (3) is installed on the air inlet port of the hollow rotating shaft (10); a rotating driving device (4) for driving the hollow rotating shaft (10) to rotate; and a recovery bracket (8) installed on the main frame (1); a heat recovery device (9) connected to the inner cavity surrounded by the lower collecting box structure (2) and the upper shield structure (7) is installed on the recovery bracket (8) for recovering heat in the hot air after drying.

2. The finished product drying equipment for feed processing according to claim 1, characterized in that: The heat recovery device (9) comprises a heat exchange box (9-4) installed on a recovery bracket (8), a heat exchanger installed in the heat exchange box (9-4); an air outlet (9-3) and an air inlet (9-5) are respectively installed at two open ends of the heat exchange box (9-4), the air outlet (9-3) and the air inlet (9-5) are both in a gradually contracting shape, an induced draft fan (9-2) is installed at the contracting end of the air outlet (9-3), an air inlet pipe (9-6) is installed at the contracting end of the air inlet (9-5), and the air inlet pipe (9-6) is connected to the inner cavity surrounded by the lower collecting box structure (2) and the upper shield structure (7); and also comprises an air outlet pipe (9-1) installed at the air outlet end of the induced draft fan (9-2).

3. The finished product drying equipment for feed processing according to claim 1, characterized in that: The screening drum device (6) comprises a front drying drum (6-6), a first screening drum (6-1), a second screening drum (6-2) and a third screening drum (6-3) which are connected to each other in sequence from the feeding end to the discharging end; a plurality of screening holes are provided on the outer peripheral walls of the first screening drum (6-1), the second screening drum (6-2) and the third screening drum (6-3), and the screening holes are increased in sequence; a plurality of groups of circumferentially distributed radiation connecting rods (6-5) are installed at the ports of each screening drum and the front drying drum (6-6); the inner end of each radiation connecting rod (6-5) is fixedly connected to the outer peripheral wall of the hollow rotating shaft (10).

4. The finished product drying equipment for feed processing according to claim 3 is characterized in that: A front feed port (6-7) is installed at the feed port of the front drying cylinder (6-6), and the front feed port (6-7) is in a gradually contracting shape; and a terminal discharge port (6-4) is installed at the discharge port of the third screen cylinder (6-3).

5. The finished product drying equipment for feed processing according to claim 4, characterized in that: It also includes a feed hopper (5) installed on the lower collecting box structure (2) through a support rod, and the discharge port of the feed hopper (5) extends into the front feed port (6-7) and is gap-matched with the front feed port (6-7).

6. The finished product drying equipment for feed processing according to claim 4, characterized in that: The lower collecting box structure (2) comprises a collecting box body (2-3) mounted on the main frame (1), a terminal discharge hopper (2-1) and a plurality of classification discharge hoppers (2-2) mounted at the bottom of the collecting box body (2-3) and connected to the inner cavity thereof, the plurality of classification discharge hoppers (2-2) respectively corresponding to the first sieve cylinder (6-1), the second sieve cylinder (6-2) and the third sieve cylinder (6-3), and the terminal discharge hopper (2-1) corresponding to the terminal discharge port (6-4); and further comprising a terminal baffle (2-4) mounted in the inner cavity of the collecting box body (2-3) and corresponding to the terminal discharge hopper (2-1), for guiding materials dropped from the terminal discharge port (6-4) into the terminal discharge hopper (2-1).

7. The finished product drying equipment for feed processing according to claim 1, characterized in that: The rotary drive device (4) comprises a rotary motor (4-3) mounted on a main frame (1), a driving sprocket (4-2) being key-connected to an output shaft of the rotary motor (4-3), and a driven sprocket (4-1) being key-connected to an air intake end of a hollow rotating shaft (10), and a transmission chain being mounted between the driving sprocket (4-2) and the driven sprocket (4-1).

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