Special spiral plate heat exchanger for sewage and high-viscosity medium

Abstract

The utility model discloses a special spiral-plate heat exchanger for sewage and high-viscosity media, which comprises a spiral-plate heat exchanger body, the outer surface wall of the spiral-plate heat exchanger body is connected with a high-temperature medium inlet and a low-temperature medium outlet which are symmetrical to each other, and is also provided with a low-temperature medium inlet and a high-temperature medium inlet which are symmetrical to each other; the spiral-plate heat exchanger body is composed of a first metal plate and a second metal plate in a concentric spiral mode, a distance fixing strip is welded between the first metal plate and the second metal plate, the distance fixing strip is spiral, the distance fixing strip is in non-connection contact with the first metal plate and the second metal plate, and a detachable end plate assembly is arranged at the bottom end of the spiral-plate heat exchanger body. The cooling device can be used for cooling viscous and easy-to-crystallize high-temperature media, two modes of online cleaning and shutdown cleaning are supported, and the operation stability and the maintenance convenience are ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to heat transfer equipment technical field, concretely is a spiral plate heat exchanger special for sewage and high viscosity medium. BACKGROUND

[0002] The Chinese utility model patent with the authorization announcement number CN208720881U provides a spiral plate heat exchanger, including spiral plate heat exchanger body, spiral plate heat exchanger body is composed of the concentric spiral of first metal sheet and second metal sheet, and the distance strip is welded between first metal sheet and second metal sheet, high temperature medium inlet and low temperature medium outlet that are mutually symmetrical are connected on the outer surface wall of spiral plate heat exchanger body, and low temperature medium inlet and high temperature medium inlet that are mutually symmetrical are also provided, low temperature medium inlet and first exhaust pipe are connected at the top of spiral plate heat exchanger body, and low temperature medium inlet is located at the side of first exhaust pipe, the above-mentioned patent has the following defects, the distance strip is welded between two metal sheets, there is a cleaning dead angle, resulting in medium retention;And the spiral plate heat exchanger body is inconvenient to disassemble, leading to difficult cleaning work, lacking online cleaning conditions. UTILITY MODEL CONTENTS

[0003] The utility model discloses a spiral plate heat exchanger special for sewage and high viscosity medium, to solve the existing spiral plate heat exchanger in the background art, there is a cleaning dead angle, resulting in medium retention;And the spiral plate heat exchanger body is inconvenient to disassemble, leading to difficult cleaning work, lacking online cleaning conditions and other problems.

[0004] To achieve the above object, the utility model provides the following technical scheme: a spiral plate heat exchanger special for sewage and high viscosity medium, including spiral plate heat exchanger body, high temperature medium inlet and low temperature medium outlet that are mutually symmetrical are connected on the outer surface wall of spiral plate heat exchanger body, and low temperature medium inlet and high temperature medium inlet that are mutually symmetrical are also provided, spiral plate heat exchanger body is composed of the concentric spiral of first metal sheet and second metal sheet, and the distance strip is welded between first metal sheet and second metal sheet, the distance strip is set to spiral, and the distance strip is not connected with first metal sheet and second metal sheet Contact, the bottom end of spiral plate heat exchanger body is provided with detachable end plate assembly.

[0005] The center tube is arranged at the inside center of the spiral plate heat exchanger body.

[0006] The cross section of the distance strip is circular.

[0007] The distance strip is provided with multiple groups, and is arranged on the upper and lower parts of the spiral plate heat exchanger body.

[0008] The detachable end plate assembly comprises a fixed flat cover and a detachable flat cover, and the fixed flat cover is provided with a medium spiral plate center inlet and outlet at a center position.

[0009] The detachable flat cover is tightly connected with the gland and the sealing gasket on the inner side through bolts, and is connected with the sealing gasket and the equipment flange on the outer side of the spiral plate heat exchanger body through bolts.

[0010] Compared with the prior art, the detachable end plate assembly has the following beneficial effects:

[0011] The detachable end plate assembly can efficiently extract waste heat in sewage, is used for cooling high-temperature medium which is viscous and easy to crystallize, thereby realizing the dual goals of energy saving and waste heat recovery. BRIEF DESCRIPTION OF DRAWINGS

[0012] Figure 1 It is an external structure schematic diagram of the detachable end plate assembly;

[0013] Figure 2 It is an internal structure schematic diagram of the detachable end plate assembly;

[0014] Figure 3 It is a detachable end plate assembly structure schematic diagram in the detachable end plate assembly;

[0015] Figure 4 It is a spiral plate heat exchanger body structure schematic diagram in the detachable end plate assembly.

[0016] In the above drawings, the spiral plate heat exchanger body 1, the high-temperature medium inlet 2, the low-temperature medium outlet 3, the low-temperature medium inlet 4, the high-temperature medium outlet 5, the first metal plate 1-1, the second metal plate 1-2, the fixed flat cover 8-1, the detachable flat cover 8-2, the medium spiral plate center inlet and outlet 9, the bolt 10, the gland 11, the sealing gasket 12, the equipment flange 13, the center partition plate 14. DETAILED DESCRIPTION

[0017] The technical solutions in the embodiments of the detachable end plate assembly will be clearly and completely described in combination with the drawings in the embodiments of the detachable end plate assembly.

[0018] As Figures 1-4The utility model provides a spiral plate heat exchanger, the spiral plate heat exchanger includes spiral plate heat exchanger body 1, the high temperature medium import 2 and low temperature medium export 3 of mutual symmetry are connected on the outer surface wall of spiral plate heat exchanger body 1, and low temperature medium import 4 and high temperature medium export 5 of mutual symmetry are also provided, spiral plate heat exchanger body 1 is composed of the concentric spiral of first metal sheet 1-1 and second metal sheet 1-2, has no outer sleeve board, and the design of detachable channel is upper and lower straight-through type, high temperature medium import 2, low temperature medium export 3, low temperature medium import 4 and high temperature medium export 5 are directly shrunk into medium fluid import and export by first metal sheet 1-1 and second metal sheet 1-2, have no dead zone, reduce resistance, when the spiral plate heat exchanger is used, first high temperature medium is injected into spiral plate heat exchange body through high temperature medium import 2, low temperature medium is injected into spiral plate heat exchange body through low temperature medium import 4, and fluid continuously counterflows in two channels formed in first metal sheet 1-1 and second metal sheet 1-2 respectively, realizes heat exchange, after heat exchange is completed, high temperature medium and low temperature medium are discharged through high temperature medium export 5 and low temperature medium export 3 respectively, and the welding of first metal sheet 1-1 and second metal sheet 1-2 has fixed distance strip 6, and fixed distance strip 6 is used to limit the shape of first metal sheet 1-1 and second metal sheet 1-2 and the distance between first metal sheet 1-1 and second metal sheet 1-2, fixed distance strip 6 is set as spiral, along with the coiling direction of first metal sheet 1-1 and second metal sheet 1-2 setting, fixed distance strip 6 and first metal sheet 1-1 and second metal sheet 1-2 are not connected contact, and fixed distance strip 6 can be placed between first metal sheet 1-1 and second metal sheet 1-2 as required.

[0019] The center pipe 7 is provided in the center of the spiral plate heat exchanger body 1, the center partition plate 14 is arranged in the middle of the center pipe 7, and the center pipe 7 is in a cylindrical shape, which facilitates the first metal sheet 1-1 and the second metal sheet 1-2 to maintain the shape.

[0020] The cross section of the fixed distance strip 6 is circular, which reduces the probability of medium adhesion and resistance and eliminates dead angles.

[0021] The fixed distance strip 6 is provided in multiple groups and arranged on the upper and lower parts of the spiral plate heat exchanger body 1, and the number of fixed distance strips can be set according to specific needs, and the first metal sheet 1-1 and the second metal sheet 1-2 are supported by the fixed distance strips.

[0022] The bottom end of the spiral plate heat exchanger body 1 is provided with a detachable end plate assembly 8, and the detachable end plate assembly 8 can be disassembled to clean the spiral plate heat exchanger, the detachable end plate assembly 8 facilitates online cleaning and supports online cleaning and disassembly cleaning.

[0023] The detachable end plate assembly 8 comprises a fixed flat cover 8-1 and a detachable flat cover 8-2, the fixed flat cover 8-1 is provided with a medium spiral plate central inlet and outlet 9 at the center position, and the detachable flat cover 8-2 is detachably fixed outside the fixed flat cover 8-1; the detachable flat cover 8-2 is a detachable assembly, and the spiral plate heat exchanger can be cleaned online by detaching the detachable flat cover 8-2.

[0024] The inner side of the detachable flat cover 8-2 is tightly connected with the gland 11 and the sealing gasket 12 and the fixed flat cover 8-1 by bolts 10; the outer side of the detachable flat cover 8-2 is connected with the equipment flange 13 on the spiral plate heat exchanger body 1 by bolts 10 and sealing gaskets 12, and the detachable flat cover 8-2 can be detached by detaching the bolts 10.

[0025] The utility model discloses can efficiently extract the waste heat in sewage, is used to the cooling of high temperature medium of viscous, easy crystallization, thereby realizes the double goal of energy saving and emission reduction and waste heat recovery. Support two ways of online cleaning and shutdown cleaning, ensure the stability of operation and the convenience of maintenance. Its hot side medium includes sewage, high viscosity crude oil, cement, pitch, easy crystallization phosphating liquid etc., and the cold side medium is clean circulating water system. Aiming at the characteristics of high viscosity, easy winding, easy adhesion, easy crystallization of the hot side medium, the fixed distance strip 6 is arranged as spiral shape with circular cross section, no dead angle, can avoid medium retention, and small resistance, ensure smooth flow of medium.

[0026] The utility model discloses a detachable end cover assembly convenient to online cleaning can support two ways of online cleaning and shutdown cleaning, and replace traditional fixed distance strip 6 with spiral support structure, can flexibly adjust support structure according to flow, thereby improve the adaptability and heat exchange efficiency of equipment.

[0027] Be used for sewage, high viscosity crude oil, cement, pitch, easy crystallization phosphating liquid etc. with high viscosity, easy winding, easy adhesion, easy crystallization hot side medium, be applicable to filamentous matter (such as kitchen sewage, domestic sewage, industrial sewage, slurry), high viscosity medium (such as crude oil, cement), easy crystallization medium (such as phosphating liquid) and the heat exchange demand of large particle material sewage.

Claims

1. A spiral plate heat exchanger specifically for wastewater and high-viscosity media, comprising a spiral plate heat exchanger body, wherein symmetrical high-temperature medium inlets and low-temperature medium outlets are connected to the outer wall of the spiral plate heat exchanger body, and symmetrical low-temperature medium inlets and high-temperature medium inlets are also provided; the spiral plate heat exchanger body is composed of a first metal plate and a second metal plate in a concentric spiral, and a spacer bar is welded between the first metal plate and the second metal plate, characterized in that... The spacer bar is spiral-shaped and is not in contact with the first and second metal plates. The bottom of the spiral plate heat exchanger body is provided with a detachable end plate assembly.

2. The spiral plate heat exchanger for wastewater and high-viscosity media according to claim 1, characterized in that, A central tube is provided at the center of the interior of the spiral plate heat exchanger body.

3. The spiral plate heat exchanger for wastewater and high-viscosity media according to claim 1, characterized in that, The cross-section of the spacer bar is circular.

4. A spiral plate heat exchanger for wastewater and high-viscosity media according to claim 3, characterized in that, There are multiple sets of spacer bars, located on the upper and lower parts of the spiral plate heat exchanger body.

5. A spiral plate heat exchanger for wastewater and high-viscosity media according to claim 1, characterized in that, The detachable end plate assembly includes a fixed flat cover and a detachable flat cover. The fixed flat cover has a medium spiral plate central inlet and outlet at its center, and the detachable flat cover can be detachably fixed to the outside of the fixed flat cover.

6. A spiral plate heat exchanger for wastewater and high-viscosity media according to claim 5, characterized in that, The inside of the detachable flat cover is tightly connected to the fixed flat cover using bolts, a pressure plate, and a sealing gasket; the outside of the detachable flat cover is connected to the equipment flange on the spiral plate heat exchanger body using bolts and a sealing gasket.

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