Plate exchanger

Abstract

The utility model discloses a plate exchanger, which relates to the field of plate exchangers and comprises a device body, a connecting pipe and a threaded pipe. Through the arrangement of the threaded sleeve, the limiting block and the fixing sleeve, under the action of the threaded sleeve, the connecting pipe and the threaded pipe are tightly fixed together, a plurality of bolts needed for connection through a flange plate are omitted, the installation step of connection of the device body and external equipment is reduced, the installation efficiency is improved, and the installation cost is reduced. Under the action of the fixing sleeve, when the fixing sleeve is rotated, a fixing block installed on the fixing sleeve can limit movement of a limiting block, and the end of the limiting block abuts against the device body, so that the device is not prone to loosening due to vibration in the using process, the connecting stability of the threaded sleeve is effectively improved, and the fixing sleeve continues to be rotated; and the lifting block lifts the limiting block along with rotation, then the threaded sleeve is screwed to complete separation and disassembly of the device body and the external equipment, and the disassembly efficiency of the external equipment is effectively improved.

Description

Technical Field

[0001] The utility model relates to the field of plate heat exchangers, and particularly to a plate heat exchanger. Background Technique

[0002] A plate heat exchanger, also known as a plate type heat exchanger, is composed of stamped concave and convex stainless steel plates. The concave and convex patterns between two adjacent plate sheets are combined relatively at 180 degrees. Therefore, the concave and convex ridge lines between the two plate sheets of the plate heat exchanger form staggered contact points. After the contact points are combined by vacuum welding, a high-pressure resistant staggered flow structure of the plate heat exchanger is formed. These staggered flow structures enable the hot and cold fluids in the plate heat exchanger to generate strong turbulence to achieve a high heat exchange effect. The plate heat exchanger is composed of a group of corrugated metal plates, and there are four corner holes on the plates for two liquids for heat transfer to pass through. The metal plate sheets are installed in a frame with a fixed plate and a movable pressing plate on one side, and are clamped by clamping bolts. Sealing gaskets are installed on the plate sheets to seal the fluid channels and guide the fluids to flow into their respective flow channels alternately to form heat exchange.

[0003] A single plate heat exchanger cannot complete the required work. The plate heat exchanger needs to be connected to equipment so that the hot and cold fluids can enter the plate heat exchanger through the connecting pipes to achieve efficient heat exchange. The plate heat exchanger often uses multiple bolts and flange plates to connect to pipe fittings, and the flange plates are fastened or loosened by screwing multiple bolts.

[0004] Since dirt may accumulate in the flow channels of the plate heat exchanger or the plate sheets may scale, it is usually cleaned regularly according to the actual situation, and it often needs to be disassembled and installed. For the above-mentioned equipment connection method, when installing or disassembling and maintaining the plate heat exchanger, multiple bolts need to be screwed, and the process is relatively cumbersome. The utility model uses a connection method with a threaded sleeve to replace the flange plate connection, reducing the installation or disassembly steps. Content of the Utility Model

[0005] Based on this, the purpose of the utility model is to provide a plate heat exchanger to solve the technical problems mentioned in the above background technique.

[0006] To achieve the above purpose, the utility model provides the following technical solution: A plate heat exchanger, comprising a device main body, a connecting pipe and a threaded pipe. The connecting pipe is installed on the outer wall of the device main body, and a threaded sleeve is slidably installed on the outer wall of the connecting pipe. The connecting pipe is connected to an external device through the threaded pipe. A movable groove is opened on one side of the threaded sleeve close to the device main body, and a rotating shaft is fixedly installed on the inner wall of the movable groove, and a limiting block is installed on the rotating shaft. A fixed sleeve is installed on the outer wall of the threaded sleeve, and a fixed block is fixedly installed on one side of the fixed sleeve close to the device main body, and a lifting block is installed on the inner wall of the fixed block.

[0007] By adopting the above technical solution, it is convenient for the connection, installation, disassembly and separation of the device main body and external devices.

[0008] The utility model is further configured such that a plurality of connecting pipes are installed on the outer wall of the device main body, and a sealing gasket is provided at the position where the connecting pipe is in contact with the threaded sleeve.

[0009] By adopting the above technical solution, the sealing performance of the connection between the connecting pipe and the threaded sleeve is ensured.

[0010] The utility model is further configured such that a plurality of movable grooves are equidistantly formed on one side of the threaded sleeve close to the device main body, and the positions of the movable grooves are staggered from those of the fixed sleeve.

[0011] By adopting the above technical solution, it is more beneficial to fix the threaded sleeve, and the movable grooves will not affect the rotation of the fixed sleeve.

[0012] The utility model is further configured such that one side of the limiting block close to the device main body is designed with an inclined angle, and the end of the limiting block abuts against the outer wall of the device main body, and there is a spacing between the limiting block and the connecting pipe.

[0013] By adopting the above technical solution, it is convenient for the movement of the limiting block, and the stability of the limiting block for fixing the threaded sleeve is ensured. The designed spacing is more beneficial for the lifting block to rotate and lift the limiting block.

[0014] The utility model is further configured such that the fixing block is in contact with the top of the limiting block, and the outer wall of the limiting block close to the fixed sleeve is designed in an arc shape.

[0015] By adopting the above technical solution, it is more beneficial for the fixing block to push the limiting block to a horizontal position when the fixed sleeve rotates.

[0016] The utility model is further configured such that a plurality of fixing blocks are fixedly installed at equal angles on one side of the fixed sleeve close to the device main body, and a lifting block is fixedly connected to the inner wall of the fixing block, and the positions of the fixing block and the lifting block are staggered from each other.

[0017] By adopting the above technical solution, it is convenient for the fixing and lifting of the limiting block not to affect each other when the fixed sleeve rotates.

[0018] The utility model is further configured such that the top corner of the lifting block close to the rotating shaft is designed with an inclined angle, and the inclined angle of the lifting block will contact the outer wall corner of the limiting block close to the connecting pipe when the lifting block rotates.

[0019] By adopting the above technical solution, it is more beneficial for the lifting block to smoothly lift the limiting block when it rotates.

[0020] In summary, the utility model mainly has the following beneficial effects:

[0021] The utility model is provided with a threaded sleeve, a limiting block and a fixing sleeve. Under the action of the threaded sleeve, the connecting pipe and the threaded pipe are tightly fixed together, eliminating the need for multiple bolts required for flange connection, reducing the installation steps for connecting the device main body to external devices, and improving the installation efficiency. Under the action of the fixing sleeve, when the fixing sleeve is rotated, the fixing block installed on the fixing sleeve will limit the movement of the limiting block, and the end of the limiting block abuts against the device main body, effectively improving the stability of the connection of the threaded sleeve and making it not easy to become loose due to vibration during the use of the device. Continuing to rotate the fixing sleeve, the lifting block installed on the inner wall of the fixing block will rotate accordingly. The inclined angle of the lifting block will contact the outer wall corner of the limiting block close to the connecting pipe, causing the limiting block to be lifted, releasing the fixation of the limiting block on the threaded sleeve. Then, simply turning the threaded sleeve can complete the disassembly of the device main body from the external device, effectively improving the disassembly efficiency of the external device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic side view structure of the utility model;

[0023] Figure 2 For the utility model Figure 1 is an enlarged schematic structure view of part A in the utility model;

[0024] Figure 3 is a schematic sectional view of the connecting pipe side of the utility model.

[0025] In the figure: 1, device main body; 2, connecting pipe; 3, threaded sleeve; 4, threaded pipe; 5, movable groove; 6, rotating shaft; 7, limiting block; 8, fixing sleeve; 9, fixing block; 10, lifting block. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0026] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. The embodiments described below by referring to the accompanying drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0027] Next, the embodiments of the present utility model will be described according to the overall structure of the present utility model.

[0028] A plate heat exchanger, such as Figure 1 - Figure 3As shown in the figure, it includes a device main body 1, a connecting pipe 2 and a threaded pipe 4. A connecting pipe 2 is installed on the outer wall of the device main body 1, and a threaded sleeve 3 is slidably installed on the outer wall of the connecting pipe 2, so that the connecting pipe 2 connects the threaded pipe 4 and an external device through the threaded sleeve 3. On one side of the threaded sleeve 3 close to the device main body 1, a plurality of movable grooves 5 are provided, and a rotating shaft 6 is fixedly installed on the inner wall of the movable groove 5. A limiting block 7 is installed on the rotating shaft 6, and the limiting block 7 is rotatably connected to the rotating shaft 6. A fixed sleeve 8 is installed on the outer wall of the threaded sleeve 3, and a plurality of fixed blocks 9 are fixedly installed on one side of the fixed sleeve 8 close to the device main body 1. A lifting block 10 is installed on the inner wall of the fixed block 9. Rotating the fixed sleeve 8 fixes the limiting block 7 in a horizontal position, fixing the threaded sleeve 3 so that it will not loosen. Continuing to rotate the fixed sleeve 8, the lifting block 10 connected to the inner wall of the fixed block 9 will lift the limiting block 7, releasing the fixation of the threaded sleeve 3.

[0029] Please refer to Figure 1 , a plurality of connecting pipes 2 are installed on the outer wall of the device main body 1, and a sealing gasket is provided at the position where the connecting pipe 2 is in contact with the threaded sleeve 3, which is convenient for ensuring the sealing performance when the connecting pipe 2 connects the threaded pipe 4 through the threaded sleeve 3.

[0030] Please refer to Figure 1 , a plurality of movable grooves 5 are equidistantly provided on one side of the threaded sleeve 3 close to the device main body 1, and the positions of the movable grooves 5 are staggered from those of the fixed sleeve 8, which is more conducive to the fixing of the threaded sleeve 3 by the installed limiting block 7, and the position of the limiting block 7 will not affect the rotation of the fixed sleeve 8.

[0031] Please refer to Figure 1 - Figure 3 , one side of the limiting block 7 close to the device main body 1 is designed with an inclined angle, and the end of the limiting block 7 abuts against the outer wall of the device main body 1. There is a spacing between the limiting block 7 and the connecting pipe 2. When the limiting block 7 is in a horizontal position, the threaded sleeve 3 is restricted by abutting against the outer wall of the device main body 1, and the stability of the limiting block 7 in fixing the threaded sleeve 3 is ensured. The designed spacing is more conducive to the lifting block 10 rotating to lift the limiting block 7.

[0032] Please refer to Figure 2 and Figure 3 , the fixed block 9 is in contact with the top of the limiting block 7, and the outer wall of the limiting block 7 close to the fixed sleeve 8 is designed with an arc, which is more conducive to the fixed block 9 pushing the limiting block 7 to a horizontal position when the fixed sleeve 8 rotates.

[0033] Please refer to Figure 2 and Figure 3 , a plurality of fixed blocks 9 are fixedly installed at equal angles on one side of the fixed sleeve 8 close to the device main body 1, and a lifting block 10 is fixedly connected to the inner wall of the fixed block 9. The positions of the fixed block 9 and the lifting block 10 are staggered from each other, which is convenient for the fixing and lifting of the limiting block 7 not to affect each other when the fixed sleeve 8 is rotated.

[0034] Referring to FIG. 3, the top corner of the lifting block 10 close to the rotating shaft 6 is designed with an inclined angle, and when the lifting block 10 rotates, its inclined angle will contact the outer wall corner of the limiting block 7 close to the connecting pipe 2, which is more conducive to smoothly lifting the limiting block 7 when the lifting block 10 rotates.

[0035] The working principle of the present utility model is as follows: When it is necessary to connect and install the connecting pipe 2 in the device main body 1 with the threaded pipe 4, first align the connecting pipe 2 and the threaded pipe 4, and turn the threaded sleeve 3 to tightly fix the connecting pipe 2 and the threaded pipe 4 together. Then turn the fixing sleeve 8 until the fixing block 9 installed on the fixing sleeve 8 pushes the limiting block 7 to a horizontal position, and then stop turning the fixing sleeve 8. At this time, the limiting block 7 installed on the threaded sleeve 3 will hold the threaded sleeve 3 to prevent it from loosening, and the connection and installation are completed; When it is necessary to disassemble and separate the connecting pipe 2 of the device main body 1 from the threaded pipe 4, first turn the fixing sleeve 8 to release the fixing of the limiting block 7 by the fixing block 9 on the fixing sleeve 8. Then turn the fixing sleeve 8 again, and the lifting block 10 fixedly connected below the fixing block 9 will push the limiting block 7 to lift it. At this time, the fixing of the threaded sleeve 3 is released. Then turn the threaded sleeve 3 to loosen the connection between the connecting pipe 2 and the threaded pipe 4, and the disassembly and separation are completed.

[0036] Although the embodiments of the present utility model have been shown and described, the specific embodiments are only explanations of the present utility model and not limitations thereof. The specific features, structures, materials or characteristics described can be combined in a suitable manner in any one or more embodiments or examples. After reading this specification, those skilled in the art can, without departing from the principle and purpose of the present utility model, make modifications, substitutions and variations that do not contribute creatively to the embodiments as needed. However, as long as it is within the scope of the claims of the present utility model, it is protected by the patent law.

Claims

1. A plate exchanger, comprising a device body (1), a connecting pipe (2) and a threaded pipe (4), characterized in that: A connecting pipe (2) is installed on the outer wall of the device body (1), and a threaded sleeve (3) is slidably installed on the outer wall of the connecting pipe (2); the connecting pipe (2) is connected to an external device via a threaded pipe (4); a movable groove (5) is provided on the side of the threaded sleeve (3) close to the device body (1), and a rotating shaft (6) is fixedly installed on the inner wall of the movable groove (5), and a limiting block (7) is installed on the rotating shaft (6); a fixed sleeve (8) is installed on the outer wall of the threaded sleeve (3), and a fixed block (9) is fixedly installed on the side of the fixed sleeve (8) close to the device body (1), and a lifting block (10) is installed on the inner wall of the fixed block (9).

2. A plate exchanger according to claim 1, characterized in that: A plurality of connecting pipes (2) are installed on the outer wall of the device body (1), and sealing gaskets are arranged at the positions where the connecting pipes (2) and the threaded sleeves (3) are in contact.

3. A plate exchanger according to claim 1, characterized in that: The threaded sleeve (3) is provided with a plurality of groups of movable grooves (5) at equal distances on one side close to the device body (1), and the positions of the movable grooves (5) are staggered with the fixed sleeve (8).

4. A plate exchanger according to claim 1, characterized in that: The side of the limit block (7) close to the device body (1) is designed to be oblique, and the end of the limit block (7) is in contact with the outer wall of the device body (1), and there is a distance between the limit block (7) and the connecting pipe (2).

5. A plate exchanger according to claim 1, characterized in that: The fixing block (9) is in contact with the top of the limiting block (7), and the outer wall of the limiting block (7) close to the fixing sleeve (8) is designed to be an arc.

6. A plate exchanger according to claim 1, characterized in that: The fixing sleeve (8) is fixedly mounted with a plurality of fixing blocks (9) at equal angles on one side close to the device body (1), and the inner wall of the fixing block (9) is fixedly connected with a lifting block (10), and the positions of the fixing block (9) and the lifting block (10) are staggered.

7. A plate exchanger according to claim 1, characterized in that: The top corner of the lifting block (10) close to the rotating shaft (6) is designed to be beveled, and when the lifting block (10) rotates, its beveled angle will contact the outer wall corner of the limiting block (7) close to the connecting pipe (2).

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