Waste heat recovery structure of paddle dryer

Abstract

The utility model relates to the technical field of waste heat recovery structures, in particular to a waste heat recovery structure of a paddle dryer, which comprises a dryer main body, a support used for fixing the dryer main body and a square connecting pipeline used for transmitting heat, one side of the dryer main body is fixedly connected with the support, and the right side of the dryer main body is communicated with the connecting pipeline. A first fixing frame is fixedly connected to one side of the connecting pipeline, a second fixing frame is arranged on the left side of the first fixing frame, rotating covers with sunken interiors are rotationally connected to the tops of the first fixing frame and the second fixing frame correspondingly, and fixing blocks with threaded hollowed-out middles are fixedly connected to the front sides of the rotating covers, the first fixing frame and the second fixing frame correspondingly; according to the waste heat recycling device, the two detachable filtering devices are arranged in the waste heat recycling structure, so that impurities in the calcining machine are not prone to entering the drying machine body, and the adverse effect of the impurities on recycling of waste heat is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat recovery structures, in particular to a waste heat recovery structure of a paddle dryer. Background Art

[0002] Paddle dryer is a low-speed stirring dryer with a stirring paddle inside the equipment, which makes the wet material fully contact with the heat carrier and the hot surface under the stirring of the paddle, so as to achieve the purpose of drying. When drying and calcining gypsum, it is usually used in conjunction with a fluidized calciner. In order to better utilize the heat generated by the calciner during use, a waste heat recovery structure is usually set between the calciner and the dryer.

[0003] The waste heat recovery structure usually connects the dryer and the calciner through a connecting pipe. Since gypsum needs to be crushed before calcination and the hot air is in a flowing state, there will be some impurities in the airflow. If the impurities enter the paddle dryer, it will affect the reuse of waste heat and the internal environment of the paddle dryer. Therefore, a waste heat recovery structure of the paddle dryer is proposed to address the above problems. Summary of the invention

[0004] The utility model aims to provide a waste heat recovery structure of a paddle dryer to solve the problem that impurities enter the dryer through the waste heat recovery device and affect the internal environment of the dryer and the reuse of waste heat.

[0005] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0006] A waste heat recovery structure of a paddle dryer, comprising a dryer body, a bracket for fixing the dryer body and a connecting pipe for transmitting heat and arranged in a square shape, wherein the bracket is fixedly connected to one side of the dryer body, the connecting pipe is connected to the right side of the dryer body, a first fixing frame is fixedly connected to one side of the connecting pipe, a second fixing frame is arranged on the left side of the first fixing frame, a rotating cover with a recessed interior is rotatably connected to the top of the first fixing frame and the second fixing frame, a filter screen is tightly fitted in the first fixing frame, a fixing block with a threaded hollow in the middle is fixedly connected to the front sides of the rotating cover, the first fixing frame and the second fixing frame, a bolt penetrates one end of the fixing block, a rubber block is fixedly connected to the bottom of the rotating cover near the front side, an anti-sliding block is fixedly connected to one side of the rubber block, a heat conducting rod penetrates one side of the second fixing frame, one end of the heat conducting rod penetrates the supporting frame, a dust removal bag is tightly fitted in the second fixing frame, and an activated carbon body is arranged in the dust removal bag.

[0007] Preferably, the filter screen consists of two parts: a frame and a filter screen, and the bolt consists of a threaded rod and a nut.

[0008] Preferably, the anti-sliding block is arranged in an elastic arc shape, the bottom of the rubber block is arranged in a hemispherical shape, and the rubber block and the top recesses of the first fixing frame and the second fixing frame are tightly fitted.

[0009] Preferably, the support frame is fixedly connected to the inner wall of the connecting pipe, and there are nine heat-conducting rods in total.

[0010] Preferably, through holes are provided on both left and right sides of the first fixing frame and the second fixing frame, the connecting pipe is arranged in sections, and the connecting pipe and the first fixing frame and the second fixing frame are fixedly connected.

[0011] Compared with the prior art, the beneficial effects of the utility model are:

[0012] In the utility model, by arranging the dryer body, the bracket, the connecting pipe, the first fixing frame, the rotating cover, the filter screen, the fixing block, the bolt, the rubber block and the anti-sliding block, the filter screen composed of the frame and the filter screen can preliminarily filter the large particle impurities in the connecting pipe. By rotating and removing the nut at the bolt, the rotating cover can be rotated until the filter screen is exposed. After the filter screen is taken out, it can be replaced. When the rotating cover is rotated in the opposite direction and fits tightly with the first fixing frame, the rubber block and the anti-sliding block at the bottom of the rotating cover are tightly fitted with the concave part at the top of the first fixing frame for preliminarily fixing. The rotating cover is fixed by the bolts penetrating the fixing block. The cover and the first fixed frame are in a reinforced state. Through the second fixed frame, dust removal bag and activated carbon body, the activated carbon body can further adsorb smaller impurities in the airflow. After long-term use, the dust removal bag and the activated carbon body can be replaced in the same way. Through the heat-conducting rod set on one side of the second fixed frame, the filtered airflow can quickly reach the dryer body through the heat-conducting rod. Through the support frame set, the heat-conducting rod is made more stable. Through the two detachable filtering devices set in the waste heat recovery structure, impurities in the calciner are not easy to enter the dryer body, thereby avoiding the adverse effects of impurities on the reuse of waste heat. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0014] Figure 2 For this utility model Figure 1 A schematic diagram of the structure at A;

[0015] Figure 3 This is a side view structural diagram of the first fixing frame of the utility model;

[0016] Figure 4 For this utility model Figure 3 Schematic diagram of the structure at B;

[0017] Figure 5 This is a schematic diagram of the heat-conducting rod connection structure of the utility model.

[0018] In the figure: 1. Dryer body; 2. Bracket; 3. Connecting pipe; 4. First fixed frame; 5. Rotating cover; 6. Filter; 7. Fixed block; 8. Bolt; 9. Rubber block; 10. Anti-sliding block; 11. Second fixed frame; 12. Heat-conducting rod; 13. Support frame; 14. Through hole; 15. Dust bag; 16. Activated carbon body. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0020] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0021] In addition, it should be noted that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. If not otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present invention.

[0022] See also Figure 1-5 , the utility model provides a technical solution:

[0023] A waste heat recovery structure of a paddle dryer comprises a dryer body 1, a bracket 2 for fixing the dryer body 1 and a connecting pipe 3 for transmitting heat and arranged in a square shape, wherein the bracket 2 is fixedly connected to one side of the dryer body 1, the connecting pipe 3 is connected to the right side of the dryer body 1, a first fixed frame 4 is fixedly connected to one side of the connecting pipe 3, a second fixed frame 11 is arranged on the left side of the first fixed frame 4, a rotating cover 5 with a concave internal setting is rotatably connected to the top of the first fixed frame 4 and the second fixed frame 11, a filter screen 6 is tightly fitted in the first fixed frame 4, and the front sides of the rotating cover 5, the first fixed frame 4 and the second fixed frame 11 are A fixed block 7 with a threaded hollow setting in the middle is fixedly connected, and a bolt 8 is passed through one end of the fixed block 7. A rubber block 9 is fixedly connected to the bottom of the rotating cover 5 near the front side, and an anti-sliding block 10 is fixedly connected to one side of the rubber block 9. A heat-conducting rod 12 is passed through one side of the second fixed frame 11, and one end of the heat-conducting rod 12 passes through the support frame 13. A dust removal bag 15 is tightly fitted in the second fixed frame 11, and an activated carbon body 16 is arranged in the dust removal bag 15. Through the two detachable filtering devices arranged in the waste heat recovery structure, impurities in the calciner are not easy to enter the dryer body 1, avoiding the adverse effects of impurities on the reuse of waste heat.

[0024] The filter screen 6 is composed of two parts, a frame and a filter screen. The bolt 8 is composed of a threaded rod and a nut, which is convenient for the overall disassembly and assembly of the filter screen 6 and the connection between the rotating cover 5 and the first fixed frame 4 and the second fixed frame 11; the anti-sliding block 10 is set in an elastic arc shape, and the bottom of the rubber block 9 is set in a hemispherical shape. The rubber block 9 and the top recesses of the first fixed frame 4 and the second fixed frame 11 fit tightly, so that the rotating cover 5 is not easy to move after being covered; the support frame 13 is fixedly connected to the inner wall of the connecting pipe 3, and there are a total of nine heat-conducting rods 12, so that the hot air can quickly reach the dryer body 1 after passing through the heat-conducting rods 12; through holes 14 are opened on the left and right sides of the first fixed frame 4 and the second fixed frame 11, and the connecting pipe 3 is set in sections. The connecting pipe 3 and the first fixed frame 4 and the second fixed frame 11 are all fixedly connected, which is convenient for the circulation of hot air.

[0025] Working process: When the waste heat recovery structure of the paddle dryer is in use, firstly, the segmented connecting pipe 3 and the dryer body 1 are connected to the calciner, and the heat generated by the calcined and crushed gypsum in the calciner is transmitted to the dryer body 1 through the connecting pipe 3. During the transmission process, some impurities in the calciner first float to the first fixed frame 4 through the connecting pipe 3, pass through the through hole 14 opened in the first fixed frame 4, and reach the filter screen 6 composed of a frame and a filter screen, which plays a preliminary filtering role on large particles of impurities. When floating to the second fixed frame 11, the dust removal bag 15 and the activated carbon body 16 arranged in the second fixed frame 11 adsorb the impurities in the airflow. The airflow after two filtrations passes through the heat-conducting rod 12, so that the airflow can quickly reach the dryer body 1 after passing through the heat-conducting rod 12. The heat-conducting rod 12 is more stable through the support frame 13 arranged on the inner wall of the connecting pipe 3 until it flows into the dryer body 1. When the filter screen 6 needs to be replaced after long-term use, the user bolts 8 is turned in the loosening direction until it is removed, and then the bolt 8 is taken out from the fixing block 7, and the rotating cover 5 is held and turned to the rear side. After it is turned to the appropriate position, the filter screen 6 can be taken out as a whole and replaced with a new filter screen 6, and then the rotating cover 5 is rotated in the opposite direction until the rubber block 9 and the anti-sliding block 10 at the bottom of the rotating cover 5 are tightly fitted with the recessed part at the top of the first fixing frame 4. Since the rubber block 9 and the anti-sliding block 10 are both elastically set, the rotating cover 5 is initially fixed at this time, and then the bolt 8 is held and passed through the first fixing frame 4 and the fixing block 7 set on one side of the rotating cover 5, and then the nut is screwed until it is tightly fitted with the fixing block 7. At this time, the connection between the rotating cover 5 and the first fixing frame 4 is reinforced. If the activated carbon main body 16 and the dust removal bag 15 need to be replaced after long-term use, they can be replaced in the same way. By setting two detachable filtering devices in the waste heat recovery structure, impurities in the calciner are not easy to enter the dryer main body 1, thereby avoiding the adverse effects of impurities on the reuse of waste heat.

[0026] The contents not described in detail in this specification belong to the prior art known to the professional and technical personnel in this field. The standard parts used in this utility model can be purchased from the market, and the special-shaped parts can be customized according to the description and the drawings. The specific connection methods of each part adopt the conventional means such as bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here.

[0027] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A waste heat recovery structure for a paddle dryer, comprising a dryer body (1), a bracket (2) for fixing the dryer body (1), and a connecting pipe (3) arranged in a square shape for transmitting heat, characterized in that: A bracket (2) is fixedly connected to one side of the dryer body (1); a connecting pipe (3) is connected to the right side of the dryer body (1); a first fixed frame (4) is fixedly connected to one side of the connecting pipe (3); a second fixed frame (11) is provided on the left side of the first fixed frame (4); a rotating cover (5) with a recessed interior is rotatably connected to the top of each of the first fixed frame (4) and the second fixed frame (11); a filter screen (6) is tightly fitted inside the first fixed frame (4); the rotating cover (5), the first fixed frame (4) and the second fixed frame (11) The front side of each of the second fixing frames (11) is fixedly connected to a fixing block (7) with a threaded hollow arrangement in the middle, one end of the fixing block (7) is penetrated by a bolt (8), a bottom of the rotating cover (5) near the front side is fixedly connected to a rubber block (9), one side of the rubber block (9) is fixedly connected to an anti-sliding block (10), one side of the second fixing frame (11) is penetrated by a heat conducting rod (12), one end of the heat conducting rod (12) penetrates a support frame (13), a dust removal bag (15) is tightly fitted in the second fixing frame (11), and an activated carbon body (16) is arranged in the dust removal bag (15).

2. The waste heat recovery structure of a paddle dryer according to claim 1, characterized in that: The filter screen (6) consists of two parts: a frame and a filter screen, and the bolt (8) consists of a threaded rod and a nut.

3. The waste heat recovery structure of a paddle dryer according to claim 1, characterized in that: The anti-sliding block (10) is arranged in an elastic arc shape, the bottom of the rubber block (9) is arranged in a hemispherical shape, and the rubber block (9) and the top recessed parts of the first fixing frame (4) and the second fixing frame (11) are tightly fitted.

4. The waste heat recovery structure of a paddle dryer according to claim 1, characterized in that: The support frame (13) is fixedly connected to the inner wall of the connecting pipe (3), and there are nine heat-conducting rods (12) in total.

5. The waste heat recovery structure of a paddle dryer according to claim 1, characterized in that: Through holes (14) are provided on the left and right sides of the first fixing frame (4) and the second fixing frame (11); the connecting pipe (3) is arranged in sections; and the connecting pipe (3) and the first fixing frame (4) and the second fixing frame (11) are fixedly connected.

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