CN219079367U

CN219079367U - Gypsum powder heat recovery device

Info

Publication number: CN219079367U
Application number: CN202223520491.1U
Authority: CN
Inventors: 张开封; 王朋; 马智慧; 朱丹; 杜航涛; 赵铭阳
Original assignee: Henan Jieyuan New Building Materials Co ltd
Current assignee: Henan Jieyuan New Building Materials Co ltd
Priority date: 2022-12-29
Filing date: 2022-12-29
Publication date: 2023-05-26
Anticipated expiration: 2032-12-29

Abstract

The utility model discloses a gypsum powder heat recovery device, which comprises a shell with a cavity inside, wherein the upper end of the shell is provided with a powder inlet, the lower end of the shell is provided with a powder outlet, ventilation pipes with two ends penetrating through holes formed in the side wall of the shell are respectively arranged in the shell, sleeves are inserted into the through holes, the ventilation pipes are in clearance fit with the corresponding sleeves, the inner ends of the sleeves protrude out of the inner surface of the shell, the outer ends of the sleeves protrude out of the outer surface of the shell, the outer ends of the ventilation pipes extend out of inner holes of the sleeves, connecting threads are arranged on the outer peripheral surfaces of the outer ends of the sleeves, and the sleeves are fixed on the shell in a sealing manner. After the gypsum layer is stuck on the part of the vent pipe in the shell, the outer end head of the vent pipe can be pulled to enable the vent pipe to move relative to the sleeve, and the end head of the sleeve can act with the gypsum layer, so that the gypsum layer is cleaned, and the problem of low heat recovery efficiency caused by the fact that the gypsum layer cannot be cleaned on the vent pipe is avoided.

Description

Gypsum powder heat recovery device

Technical Field

The utility model relates to a heat recovery device for recovering waste heat in gypsum powder, and belongs to the field of gypsum production.

Background

In the gypsum production process, in order to obtain the water content meeting the specification, the gypsum is required to be calcined and dehydrated, in the process, the air is heated by a heating device, then the hot air is introduced into a calciner to heat the gypsum powder, and the heated gypsum powder meeting the specification is flushed out of a discharge hole of the calciner and enters the next link. The temperature of the gypsum powder which is just calcined is very high, and the heat is extremely wasted if not recovered, at present, cold air for calcining the gypsum powder is generally introduced into the powder, so that the cold air is preheated, and a part of heat is recovered, so that a part of energy of heating air is saved, and the aim of saving energy is fulfilled. In the prior art, a vent pipe is generally fixed in a shell, gypsum powder coming out of a calciner enters the shell of the heat exchanger, and cold air passes through the vent pipe, so that heat exchange between the gypsum powder and the air is realized. The calcined gypsum powder still contains moisture, when the calcined gypsum powder contacts with the ice-cold vent pipe, the moisture in the gypsum powder can be condensed, the wet gypsum powder can be adhered to the vent pipe for a long time, and a thick gypsum layer can be adhered to the vent pipe because the vent pipe is fixed in the shell and cannot be cleaned, so that the heat recovery efficiency is greatly reduced.

Disclosure of Invention

The utility model aims to provide a gypsum powder heat recovery device, which solves the problem that a thick gypsum layer adhered on a vent pipe cannot be cleaned, so that the heat recovery efficiency is greatly reduced in the prior art.

In order to achieve the above purpose, the present utility model adopts the following technical scheme: the utility model provides a gypsum powder heat recovery device, includes the inside casing that has the cavity, and the powder import has been seted up to the upper end of casing, and the powder export has been seted up to the lower extreme of casing, has set up the breather pipe that wears out in the through-hole of seting up on the lateral wall of casing respectively in the casing, has inserted the sleeve pipe in each through-hole, breather pipe and the sleeve pipe clearance fit that corresponds respectively, sheathed tube inner protrusion is in the internal surface of casing, sheathed tube outer end protrusion is in the surface of casing, the outer end of breather pipe is stretched out by in the sheathed tube hole, the outer peripheral face of sheathed tube outer end on be provided with connecting screw thread, the sleeve pipe seal is fixed on the casing.

The outer end of the sleeve is connected with a gas pipe through a connecting thread, the gas pipe is a gas pipe with a connecting nut on the end, the front end of the connecting nut is screwed on the sleeve, the tail end of the connecting nut is provided with an adduction turning edge, the gas pipe is fixed on the turning edge in a sealing way, and the inner end face of the turning edge is matched with the outer end face of the sleeve in a sealing way.

The sleeve is fixed on the shell in a sealing way through welding.

The inner end face of the turning edge is in sealing fit with the outer end face of the sleeve through a sealing ring, and the sealing ring is arranged on the turning edge.

The shell is a square shell.

The vent pipes are arranged on the shell from the upper end part of the shell to the lower part in a row.

The upper and lower positions of each vent pipe in two adjacent rows of vent pipes are in one-to-one correspondence.

The lower part of the shell is provided with a quadrangular pyramid extension part in an extending way, the top end of the extension part faces downwards, and the powder outlet is arranged at the top end of the extension part.

The two ends of the vent pipe extend out from the side wall of the shell, the vent pipe is in clearance fit with the sleeve pipe which is fixed on the shell in a sealing way, and meanwhile, the outer end head of the vent pipe extends out from the inner hole of the sleeve pipe, so that after the gypsum layer is stuck on the part of the vent pipe in the shell, the outer end head of the vent pipe can be pulled to enable the vent pipe to move relative to the sleeve pipe, the end head of the sleeve pipe can act with the gypsum layer, the gypsum layer is cleaned, and the problem of low heat recovery efficiency caused by the fact that the gypsum layer on the vent pipe cannot be cleaned is avoided.

The outer end of the sleeve is connected with the gas pipe through the connecting screw thread, the gas pipe is provided with the connecting nut, the front end of the connecting nut is screwed on the sleeve, the tail end of the connecting nut is provided with the adduction turning edge, the gas pipe is sealed and fixed on the turning edge, the inner end surface of the turning edge is in sealed fit with the outer end surface of the sleeve, and the gas pipe is in clearance fit with the sleeve to seal the sleeve, so that the tightness of the whole equipment can be ensured, and the environment cannot be influenced.

The vent pipes are arranged on the shell from the upper end part of the shell to the lower part in a row, the upper and lower positions of the vent pipes in two adjacent rows of vent pipes are in one-to-one correspondence, the vent pipes corresponding to the positions can be connected end to form a gas channel, the heat exchange length of gas and gypsum powder is increased, the preheating temperature of air is increased, and the heat recovery is better realized.

Drawings

FIG. 1 is a schematic diagram of an embodiment of the present utility model;

FIG. 2 is a partial cross-sectional view of an embodiment of the present utility model;

fig. 3 is a partial enlarged view at a in fig. 2.

Detailed Description

In the embodiment of the gypsum powder heat recovery device, in fig. 1, 2 and 3, a casing 1 is rectangular in shape as a whole, a cavity is formed in the casing, an upper port of the casing 1 is sealed by a sealing plate 2, a powder inlet 3 is formed in the sealing plate 2, an extension part 4 is arranged at the lower part of the casing 1, the extension part 4 is rectangular in shape as a whole, the top end of the extension part 4 faces downwards, a powder outlet 5 is formed at the top end of the extension part 4, and the gypsum powder entering the cavity of the casing 1 can flow out without residues due to the existence of the extension part.

The vent pipe 6 is arranged in the shell 1, two ends of the vent pipe 6 extend out of through holes formed in the side wall of the shell respectively, the sleeves 7 are inserted into the through holes respectively, the sleeves 7 are fixed on the shell 1 in a sealing mode through welding, two ends of the vent pipe 6 penetrate through the corresponding sleeves 7 respectively, and the vent pipe and the sleeves 7 are in clearance fit. The inner end of the sleeve 7 protrudes from the inner surface of the casing 1, the outer end of the sleeve 7 protrudes from the outer surface of the casing 1, and the outer end of the vent pipe 6 protrudes from the inner hole of the corresponding sleeve, i.e. the end of the vent pipe 6 protrudes from the sleeve 7. The outer peripheral surface of the outer end of the sleeve 7 is provided with connecting threads, through which the outer end of the sleeve 7 can be connected with the upper gas pipe 8, the end of the gas pipe 8 is connected with a connecting nut 9, which is a common pipeline and belongs to the market, the inner wall of the connecting nut 9 of the pipeline is provided with the connecting threads, the tail end of the connecting nut 9 is provided with an adduction turnup 10, that is, the tail end is provided with an annular edge, the gas pipe is fixed on the turnup 10 in a sealing way, the front end of the connecting nut 9 is screwed on the sleeve 7, the inner end surface of the turnup 10 is in sealing fit with the outer end surface of the sleeve 7 through a sealing ring 11, and the sealing ring 11 is arranged on the turnup 10.

The vent pipes 6 are arranged from the upper end of the housing 1 to the lower part in a row, that is, the vent pipes 6 are arranged in a row, and two adjacent rows are arranged one above the other, and the upper and lower positions of the vent pipes in the two adjacent rows of vent pipes 6 are in one-to-one correspondence, that is, the number of the vent pipes in one row is the same and the upper and lower positions are in one-to-one correspondence.

When the air pipe is used, two connecting modes are adopted, one is that two ends of the air pipe are respectively connected with one air pipe, one air pipe is connected with an air source, the other air pipe is connected with the air heating device, the air pipe corresponding to the air pipe is used as a heat recovery unit, the air pipes corresponding to the air pipes can be connected end to form an air channel, the heat exchange length of air and gypsum powder is increased, the preheating temperature of air is increased, and the air pipes corresponding to the air pipes in each row are connected into an integral heat recovery unit.

In this embodiment, the air pipe is provided, and as an independent product, the heat recovery device may also exist alone, and may be connected to the air pipe when in actual use.

Claims

1. A gypsum powder heat recovery device is characterized in that: including the inside casing that has the cavity, the powder import has been seted up to the upper end of casing, and the powder export has been seted up to the lower extreme of casing, has set up the breather pipe that wears out in the through-hole of seting up on the lateral wall of casing respectively in the casing, inserts in each through-hole and has been equipped with the sleeve pipe, breather pipe and the sleeve pipe clearance fit that corresponds respectively, sheathed tube inner protrusion is in the internal surface of casing, sheathed tube outer end protrusion is in the surface of casing, the outer end of breather pipe by stretch out in the sheathed tube hole, the outer peripheral face of sheathed tube outer end on be provided with connecting screw thread, the sleeve pipe is sealed to be fixed on the casing.

2. The gypsum powder heat recovery apparatus according to claim 1, wherein: the outer end of the sleeve is connected with a gas pipe through a connecting thread, the gas pipe is a gas pipe with a connecting nut on the end, the front end of the connecting nut is screwed on the sleeve, the tail end of the connecting nut is provided with an adduction turning edge, the gas pipe is fixed on the turning edge in a sealing way, and the inner end face of the turning edge is matched with the outer end face of the sleeve in a sealing way.

3. The gypsum powder heat recovery apparatus according to claim 2, wherein: the sleeve is fixed on the shell in a sealing way through welding.

4. A gypsum powder heat recovery apparatus as set forth in claim 3, wherein: the inner end face of the turning edge is in sealing fit with the outer end face of the sleeve through a sealing ring, and the sealing ring is arranged on the turning edge.

5. The gypsum powder heat recovery apparatus according to claim 4, wherein: the shell is a square shell.

6. The gypsum powder heat recovery apparatus according to claim 5, wherein: the vent pipes are arranged on the shell from the upper end part of the shell to the lower part in a row.

7. The gypsum powder heat recovery apparatus according to claim 6, wherein: the upper and lower positions of each vent pipe in two adjacent rows of vent pipes are in one-to-one correspondence.

8. The gypsum powder heat recovery apparatus according to claim 7, wherein: the lower part of the shell is provided with a quadrangular pyramid extension part in an extending way, the top end of the extension part faces downwards, and the powder outlet is arranged at the top end of the extension part.