Expanded perlite waste heat recovery device

Abstract

The utility model discloses an expanded perlite waste heat recovery device, which relates to the technical field of waste heat recovery and comprises a core tube, openings at two ends of the core tube are respectively provided with a feed end and a discharge end, and an inner spiral blade is fixedly mounted on the inner wall of the core tube; an ore sand preheating pipe is arranged outside the core pipe in a sleeving mode, an outer spiral blade is fixedly installed on the inner wall of the ore sand preheating pipe, the spiral direction of the outer spiral blade is opposite to that of the inner spiral blade, and a discharging port is formed in the side face of the end, close to the feeding end of the core pipe, of the ore sand preheating pipe. A digging hopper for digging materials is fixedly mounted on the side surface of one end, close to the discharging end, of the ore sand preheating pipe; the device has the beneficial effects that heat of a finished product after perlite expansion is fully absorbed, then the heat is used for preheating perlite ore sand, and the purposes of saving energy consumption and reducing cost are achieved; the spiral directions of the outer spiral blade and the inner spiral blade are opposite, it is guaranteed that the heating temperature of perlite ore sand is from high to low, heating is more uniform, and the preheating effect is good.

Description

Technical Field

[0001] The utility model relates to the technical field of waste heat recovery, in particular to an expanded perlite waste heat recovery device. Background Art

[0002] After the perlite ore is expanded at high temperature, the finished product still has a temperature of more than 900 degrees Celsius. However, the perlite ore must be preheated before it can expand. In the past, a separate heating zone must be set up for preheating of the perlite ore, which increased energy consumption. After the perlite is expanded, the finished product is directly blown into the silo by a fan. This part of the heat is completely unused and lost in vain, resulting in a waste of resources. Utility Model Content

[0003] The purpose of the utility model is to provide an expanded perlite waste heat recovery device in order to solve the above-mentioned problem.

[0004] The utility model achieves the above-mentioned purpose through the following technical solutions:

[0005] An expanded perlite waste heat recovery device comprises a core tube, wherein openings at both ends of the core tube are respectively arranged as a feed end and a discharge end, and an inner spiral blade is fixedly installed on the inner wall of the core tube; an ore sand preheating tube is sleeved on the outside of the core tube, and an outer spiral blade is fixedly installed on the inner wall of the ore sand preheating tube, and the spiral direction of the outer spiral blade is opposite to that of the inner spiral blade; a discharge port is provided on the side of one end of the ore sand preheating tube close to the feed end of the core tube, and a digging hopper for digging materials is fixedly installed on the side of one end of the ore sand preheating tube close to the discharge end.

[0006] Preferably, the ore preheating tube and the core tube are fixedly connected via a fixing tube.

[0007] Preferably: the feed end cover of the core tube is provided with a feed end cover, the feed end cover is sealedly connected with a high-temperature pipe on the side away from the core tube, and the upper end of the high-temperature pipe is sealedly connected with a material collecting cone.

[0008] Preferably: the outer surfaces of the high-temperature pipeline and the ore preheating pipe are both coated with an insulation layer.

[0009] Preferably, the feed end cover is rotatably connected to the core tube via a bearing.

[0010] Compared with the prior art, the beneficial effects of the utility model are: the device can fully absorb the heat of the finished product after the perlite is expanded, and then use this heat to preheat the perlite ore, so as to save energy and reduce costs; the spiral directions of the outer spiral blades and the inner spiral blades are opposite, so as to ensure that the perlite ore is heated from high to low, the heating is more uniform, and the preheating effect is good. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0012] Figure 1 It is a stereoscopic diagram of an expanded perlite waste heat recovery device described in the utility model.

[0013] Figure 2 It is a schematic diagram of the internal structure of an expanded perlite waste heat recovery device described in the utility model.

[0014] The following are the descriptions of the reference numerals:

[0015] 1. Collecting cone; 2. High-temperature pipe; 3. Feed end cover; 4. Ore preheating pipe; 5. Core pipe; 6. Inner spiral blades; 7. Digging hopper; 8. Fixed pipe; 9. Discharge port; 10. Outer spiral blades. DETAILED DESCRIPTION

[0016] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate directions or positional relationships based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first", "second", etc. may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0017] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood by specific circumstances.

[0018] The utility model is further described below in conjunction with the accompanying drawings:

[0019] like Figure 1-Figure 2 As shown, an expanded perlite waste heat recovery device comprises a core tube 5, the openings at both ends of the core tube 5 are respectively set as a feed end and a discharge end, an inner spiral blade 6 is fixedly installed on the inner wall of the core tube 5, and the inner spiral blade 6 is used to push the expanded perlite to move, and at the same time increase the contact heat transfer between the perlite and the core tube 5 to ensure the heat recovery effect; an ore sand preheating tube 4 is sleeved on the outer side of the core tube 5, and the two rotate synchronously, and the ore sand preheating tube 4 is used to provide a heat exchange channel for the perlite ore sand, and an outer spiral blade 10 is fixedly installed on the inner wall of the ore sand preheating tube 4, and the outer spiral blade 10 is used to push the perlite ore sand that needs to be preheated to move, and at the same time increase the contact heat transfer between the perlite ore sand and the core tube 5 to ensure the preheating effect and heat utilization rate, and the outer spiral blade 10 The spiral direction of the inner spiral blade 6 is opposite to that of the inner spiral blade 6, so as to ensure that the perlite ore is heated from high to low, the heating is more uniform, and the preheating effect is good. A discharge port 9 is provided on the side of the feed end of the ore preheating tube 4 close to the core tube 5, and a digging hopper 7 for digging materials is fixedly installed on the side of the end of the ore preheating tube 4 close to the discharge end; the ore preheating tube 4 and the core tube 5 are fixedly connected by a fixed tube 8; a feed end cover 3 of the core tube 5 is provided with a feed end cover 3, and a high-temperature pipe 2 is sealedly connected to the side of the feed end cover 3 away from the core tube 5, and a collecting cone 1 is sealed at the upper end of the high-temperature pipe 2, and the collecting cone 1 is used for collecting materials; the outer surfaces of the high-temperature pipe 2 and the ore preheating tube 4 are both coated with an insulation layer to reduce heat loss; the feed end cover 3 and the core tube 5 are rotatably connected through a bearing.

[0020] Working principle: When in use, the expanded perlite product is collected by the collecting cone 1 and enters the core tube 5 through the high-temperature pipe 2. Spiral blades are welded inside the core tube 5. The expanded perlite product slowly moves to the discharge end of the core tube 5 under the push of the spiral blades, and at the same time transfers the carried heat to the outer wall of the core tube 5. Spiral blades are also welded inside the ore preheating tube 4. The perlite ore is dug up in the silo through the digging hopper 7, and slowly moves to the discharge port 9 of the ore preheating tube 4 under the push of the spiral blades, and at the same time absorbs the heat from the outer wall of the core tube 5 to preheat the perlite ore.

[0021] The collecting cone 1 and the high-temperature pipe 2 are both universal standard parts or parts known to those skilled in the art. Their structures and principles can be known to those skilled in the art through technical manuals or conventional experimental methods, so they will not be described in detail here.

[0022] The basic principles, main features and advantages of the utility model are shown and described above. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principles of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, and these changes and improvements shall fall within the scope of the utility model to be protected.

Claims

1. An expanded perlite waste heat recovery device, comprising a core tube (5), characterized in that: The openings at both ends of the core tube (5) are respectively arranged as a feed end and a discharge end, and an inner spiral blade (6) is fixedly mounted on the inner wall of the core tube (5); an ore preheating tube (4) is sleeved on the outside of the core tube (5), and an outer spiral blade (10) is fixedly mounted on the inner wall of the ore preheating tube (4), wherein the spiral direction of the outer spiral blade (10) is opposite to that of the inner spiral blade (6); a discharge port (9) is arranged on the side surface of one end of the ore preheating tube (4) close to the feed end of the core tube (5), and a digging hopper (7) for digging materials is fixedly mounted on the side surface of one end of the ore preheating tube (4) close to the discharge end.

2. The expanded perlite waste heat recovery device according to claim 1, characterized in that: The ore preheating tube (4) and the core tube (5) are fixedly connected via a fixing tube (8).

3. The expanded perlite waste heat recovery device according to claim 1, characterized in that: The feed end cover (3) of the core tube (5) is provided with a feed end cover (3), and the side of the feed end cover (3) away from the core tube (5) is sealedly connected to a high-temperature pipe (2), and the upper end of the high-temperature pipe (2) is sealedly connected to a material collecting cone (1).

4. The expanded perlite waste heat recovery device according to claim 3, characterized in that: The outer surfaces of the high-temperature pipeline (2) and the ore preheating pipe (4) are both coated with a thermal insulation layer.

5. The expanded perlite waste heat recovery device according to claim 3, characterized in that: The feed end cover (3) is rotatably connected to the core tube (5) via a bearing.

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