An adjustable piston screen plate device for waste heat regeneration dryer

Abstract

The utility model relates to the technical field of dryers, an adjustable piston-type sieve plate device for a waste heat regeneration dryer, which consists of a sleeve part and a sieve plate part, wherein the sleeve part comprises a bottom plate, the bottom of the bottom plate is fixedly connected to an outer sleeve, and first sieve holes are densely arranged on the bottom plate and within the range of the outer sleeve; the sieve plate part comprises a movable sieve plate, the top two sides of the movable sieve plate are respectively fixedly connected to guide rods, the top ends of the guide rods penetrate the bottom plate and movably cooperate with the bottom plate, a limiting structure is arranged on the top ends of the guide rods, and second sieve holes are densely arranged on the movable sieve plate. When working, the movable sieve plate descends by its own weight following the decline of the adsorbent material level, so that the surface adsorbent particles are always in a compacted state, thereby avoiding the fluidization wear of the adsorbent particles to produce debris, and greatly prolonging the service life of the dust filter element.

Description

Technical Field

[0001] The utility model relates to an adjustable piston-type screen plate device for a waste heat regeneration dryer, belonging to the technical field of dryers. Background Art

[0002] In the smelting industry, compressed air can be used as the air source for actuators in industrial control, the air source for solid transportation, the power source for pneumatic tools, etc. However, the air in the daily environment contains a considerable amount of moisture and dust particles, which are compressed and condensed into wet saturated air; compressed air with a large amount of liquid water droplets and dust particles will cause problems such as rust, blockage, and wear of equipment, pipelines, and valves. It must be dehydrated and dusted by a waste heat regeneration dryer before it can meet the use standards.

[0003] The waste heat regeneration adsorption dryer consists of an adsorption tower, a regeneration tower, a heater, a dust filter, a water cooler, a gas-liquid separator, adsorbent alumina microspheres, etc. A metal sieve plate is installed on the top of the adsorption tower. The aperture of the sieve plate is smaller than the diameter of the adsorbent particles, so that the compressed air can pass smoothly, while the adsorbent particles are blocked.

[0004] When the adsorption tower is working, the surface adsorbent particles will flow like a fluid under the action of compressed air, that is, the adsorbent is fluidized. The main material of the adsorbent is alumina microspheres. During the adsorbent filling process, the adsorbent needs to be filled into the adsorption tower and compacted with a sieve plate.

[0005] However, after the equipment has been put into operation for a period of time, due to the mechanical vibration during the operation of the adsorption tower, the adsorbent level will inevitably drop, which will cause a gap between the adsorbent and the metal sieve plate, giving the surface adsorbent particles space to flow. When the dryer is working, the low-temperature and high-pressure compressed air flows from bottom to top through the adsorbent bed of the adsorption tower, and the surface alumina microspheres will boil in the bed and present a fluidized state. These boiling particles will inevitably collide with the sieve plate or other particles during the movement, causing the particles to continuously wear and even break during the fluidization process. The dust and broken particles generated by wear will pass through the sieve plate holes and enter the dust filter, vapor-liquid separator and other components behind, thereby clogging the filter and separator filter element, which will cause the pressure drop before and after the dryer to increase and energy consumption to increase. In severe cases, the filter element will fall off, causing the alumina particles to leak to the compressed air user end, resulting in failure of the user-end equipment and instruments, seriously affecting the stable operation of production.

[0006] Therefore, it is necessary to study a more reasonable device to avoid the fluidization phenomenon of alumina microspheres and improve the stability of the dryer working process. Utility Model Content

[0007] In order to solve the above problems existing in the prior art, the utility model provides an adjustable piston-type screen plate device for a waste heat regeneration dryer.

[0008] The technical solution of the utility model is as follows:

[0009] An adjustable piston-type sieve plate device for a waste heat regeneration dryer consists of a sleeve part and a sieve plate part, wherein the sleeve part includes a bottom plate, the bottom of the bottom plate is fixedly connected to an outer sleeve, and first sieve holes are densely distributed on the bottom plate and within the range of the outer sleeve; the sieve plate part includes a movable sieve plate, guide rods are fixedly connected to the top two sides of the movable sieve plate, the top ends of the guide rods penetrate the bottom plate and movably cooperate with the bottom plate, a limiting structure is provided on the top end of the guide rod, and second sieve holes are densely distributed on the movable sieve plate.

[0010] The periphery of the bottom plate extends out of the outer wall of the outer sleeve to form a mounting flange, and mounting holes are arranged in a circumferential array on the mounting flange.

[0011] Wherein, an opening is arranged on the bottom plate corresponding to the installation position of the guide rod, and a conduit is fixedly connected to the opening, and the guide rod is movably installed in the conduit.

[0012] The side wall of the outer sleeve is densely covered with third sieve holes, the distribution area of ​​the third sieve holes is close to the upper end of the side wall of the outer sleeve, and the height of the distribution area is one third to one half of the height of the side wall of the outer sleeve.

[0013] Wherein, the top end of the guide rod is a threaded section and is threadedly connected with a limit nut. A limit pin is radially penetrated through the top end of the guide rod, and the limit pin is located above the limit nut.

[0014] The utility model has the following beneficial effects:

[0015] The utility model improves the original fixed sieve plate and adds a movable guide rod, so that the movable sieve plate can descend with the sedimentation of the alumina particle adsorbent, eliminating the gap between the settled alumina particle adsorbent and the sieve plate, so that the alumina particle adsorbent has no space to flow, reducing the rigid collision between the alumina particle adsorbent and the sieve plate, alleviating the scouring and wear of the sieve plate, and also reducing the generation of alumina particle powder, thereby greatly extending the service life of the dust filter element.

[0016] The utility model has a plurality of sieve holes on the surface of the bottom plate and the outer sleeve, which increases the airflow flow area, reduces the airflow velocity, makes the airflow contact with the adsorbent more sufficient, and makes the adsorption and desorption process more complete, which is beneficial to improving the working efficiency of the adsorbent.

[0017] The bottom plate and the adsorption tower, the movable guide rod and the guide tube of the utility model are all detachably connected by bolts, so it is convenient to disassemble, clean, repair and replace the piston type screen plate part in the outer sleeve. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The overall structure of the utility model is shown in FIG. Figure 1 ;

[0019] Figure 2 The overall structure of the utility model is shown in FIG. Figure 2 ;

[0020] Figure 3 It is a schematic diagram of the internal structure of the utility model.

[0021] The reference numerals in the figure represent:

[0022] 100-sleeve part, 200-sieve plate part, 1-bottom plate, 2-outer sleeve, 3-first sieve hole, 4-movable sieve plate, 5-guide rod, 6-second sieve hole, 7-mounting hole, 8-conduit, 9-third sieve hole, 10-limit nut, 11-limit pin. DETAILED DESCRIPTION

[0023] The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.

[0024] See also Figure 1-3 An adjustable piston-type sieve plate device for a waste heat regeneration dryer is composed of a sleeve part 100 and a sieve plate part 200.

[0025] The sleeve part 100 includes a bottom plate 1, the bottom of which is fixedly connected with an outer sleeve 2, and the outer sleeve 2 and the bottom plate 1 are fixed by welding. First sieve holes 3 are densely distributed on the bottom plate 1 and within the range of the outer sleeve 2. The aperture of the first sieve holes 3 is smaller than the minimum particle size of the alumina particle adsorbent, thereby ensuring that the alumina particle adsorbent is effectively blocked and filtered.

[0026] In order to facilitate the installation and connection between the device and the adsorption tower of the waste heat regeneration dryer, the periphery of the base plate 1 is designed to extend out of the outer wall of the outer sleeve 2 to form a mounting flange, and mounting holes 7 are arranged in a circumferential array on the mounting flange, and the installation can be achieved by fitting bolts through each mounting hole 7.

[0027] The sieve plate part 200 includes a movable sieve plate 4, and guide rods 5 are fixedly connected to the two sides of the top of the movable sieve plate 4 respectively. The top ends of the guide rods 5 penetrate the bottom plate 1 and cooperate with it movably. When working, due to the self-weight of the movable sieve plate 4 and the guide rods 5, the movable sieve plate 4 can descend along with the sedimentation of the alumina particle adsorbent, thereby eliminating the gap between the settled alumina particle adsorbent and the sieve plate, so that the alumina particle adsorbent has no space to flow, reducing the rigid collision between the alumina particle adsorbent and the sieve plate, alleviating the scouring and wear of the sieve plate, and also reducing the generation of alumina particle powder, thereby greatly extending the service life of the dust filter element; specifically, an opening is provided on the bottom plate 1 corresponding to the installation position of the guide rod 5, and a conduit 8 is fixedly connected to the opening, and the guide rod 5 is movably installed in the conduit 8 to ensure that the guide rod 5 can be lifted and lowered in the vertical direction, thereby avoiding the movable sieve plate 4 from shaking in the horizontal direction, and improving the stability of the lifting and lowering activities.

[0028] A limiting structure is provided at the top of the guide rod 5. Specifically, the top of the guide rod 5 is a threaded section, and is threadedly connected with a limiting nut 10. A limiting pin 11 is radially penetrated through the top of the guide rod 5, and the limiting pin 11 is located above the limiting nut 10. When the device needs to remove the screen plate part 200, the limiting pin 11 and the limiting nut 10 can be removed accordingly to withdraw the guide rod 5 from the bottom end of the conduit 8, thereby realizing disassembly, and also supporting re-installation and connection.

[0029] The movable sieve plate 4 is densely covered with second sieve holes 6, the aperture of which is smaller than the minimum particle size of the alumina particle adsorbent, thereby ensuring that the alumina particle adsorbent is effectively blocked and filtered;

[0030] In order to further promote the medium circulation efficiency, third sieve holes 9 are densely distributed on the side wall of the outer sleeve 2. The aperture of the third sieve holes 9 is smaller than the minimum particle size of the alumina particle adsorbent, ensuring that the alumina particle adsorbent is effectively blocked and filtered. Furthermore, the distribution area of ​​the third sieve holes 9 is close to the upper end of the side wall of the outer sleeve 2, and the height of the distribution area is one-third to one-half of the height of the side wall of the outer sleeve 2. After the device is installed, during the initial working period, the movable sieve plate 4 is located above the inner cavity of the outer sleeve 2, and the height below the movable sieve plate 4 is buried by the alumina particle adsorbent until the later stage of the device being put into operation, when the movable sieve plate 4 descends to the middle of the inner cavity of the outer sleeve 2. During the whole process, the height below the middle of the outer sleeve 2 is always buried by the alumina particle adsorbent. Therefore, there is no need to distribute the third sieve holes 9 on the side wall below the middle of the outer sleeve 2.

[0031] The working principle of this utility model:

[0032] When using the adjustable piston-type screen plate device for a waste heat regeneration dryer of this embodiment, the specific steps are as follows:

[0033] In the first step, the bottom plate 1 welded with the outer sleeve 2 and the conduit 8 is installed at the top end cap position of the adsorption tower through the installation hole 7.

[0034] In the second step, the movable screen plate 4 equipped with the guide rod 5 is nested into the outer sleeve 2. After the guide rod 5 passes through the conduit 8, the limit nut 10 and the limit pin 11 are installed to limit the falling distance of the guide rod 5 in the conduit 8.

[0035] During operation, during the hot blowing stage of the dryer, the hot air from top to bottom blows the movable sieve plate 4 against the surface of the alumina particle adsorbent bed, limiting the movement space of the alumina microspheres. When the dryer enters the cold blowing stage, the compressed air blows through the particles on the surface of the desiccant from bottom to top. Due to the obstruction of the movable sieve plate 4, fluidization cannot occur, thereby avoiding blockage or even damage of downstream equipment. At the same time, penetrating sieve holes are opened on the surface of the bottom plate 1, the outer sleeve 2, and the movable sieve plate 4 to facilitate the diffusion of airflow in the regeneration tower and the adsorption tower.

[0036] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. An adjustable piston screen plate device for a waste heat regeneration dryer, characterized in that: The invention is composed of two parts: a sleeve part (100) and a sieve plate part (200), wherein the sleeve part (100) comprises a bottom plate (1), the bottom of the bottom plate (1) is fixedly connected to an outer sleeve (2), and first sieve holes (3) are densely distributed on the bottom plate (1) and within the range of the outer sleeve (2); the sieve plate part (200) comprises a movable sieve plate (4), the top two sides of the movable sieve plate (4) are respectively fixedly connected to guide rods (5), the top ends of the guide rods (5) pass through the bottom plate (1) and are movably matched therewith, the top ends of the guide rods (5) are provided with a limiting structure, and the movable sieve plate (4) is densely distributed with second sieve holes (6).

2. The adjustable piston screen plate device for a waste heat regeneration dryer according to claim 1, characterized in that: The periphery of the bottom plate (1) extends out of the outer wall of the outer sleeve (2) to form a mounting flange, and mounting holes (7) are arranged in a circumferential array on the mounting flange.

3. The adjustable piston screen plate device for a waste heat regeneration dryer according to claim 1, characterized in that: An opening is provided on the bottom plate (1) corresponding to the installation position of the guide rod (5), and a guide tube (8) is fixedly connected to the opening. The guide rod (5) is movably installed in the guide tube (8).

4. The adjustable piston screen plate device for a waste heat regeneration dryer according to claim 1, characterized in that: The side wall of the outer sleeve (2) is densely covered with third sieve holes (9), the distribution area of ​​the third sieve holes (9) is close to the upper end of the side wall of the outer sleeve (2), and the height of the distribution area is one third to one half of the height of the side wall of the outer sleeve (2).

5. The adjustable piston screen plate device for a waste heat regeneration dryer according to claim 1, characterized in that: The top end of the guide rod (5) is a threaded section and is threadedly connected to a limit nut (10). A limit pin (11) is radially penetrated through the top end of the guide rod (5), and the limit pin (11) is located above the limit nut (10).

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