A heat exchange device for chemical production

Abstract

The present invention discloses a heat exchange device for chemical production, which relates to the field of heat exchanger devices. It includes a device base, a heat exchange housing, and a sealing housing. The characteristics are as follows: The heat exchange housing is installed on the device base and is provided with a liquid inlet interface. The sealing housing is installed at the head and tail ends of the heat exchange housing through bolts. A plurality of baffles are arranged at intervals in the heat exchange housing. A plurality of heat exchange tubes passing through the heat exchange housing are arranged in the baffles. A scraping device is provided on the same side as the root of the baffle and the liquid inlet interface. The scraping device will clean the root of the baffle during the heat exchange process of the device. The invention can automatically start to rotate after the chemical liquid enters the heat exchange housing through the provided scraping device, and clean the root of the baffle through the provided elastic scraping buckle, preventing the chemical liquid or impurities contained in the liquid from staying here.

Description

Technical Field

[0001] The present invention relates to the field of heat exchanger equipment, and specifically to a heat exchange equipment for chemical production. Background Art

[0002] The structure of the shell-and-tube heat exchanger is relatively simple, compact, and inexpensive, and it is widely used in chemical production. The shell-and-tube heat exchanger is divided into two parts: a shell and inner tubes. The inner tubes are usually fixed by some baffles, and these baffles are generally fixed by welding in the heat exchange components. Since the baffles are vertically arranged, when some relatively thick chemical solutions or chemical solutions containing some impurities flow in the heat exchanger, due to the root of the vertically arranged baffle being in a right-angle or nearly right-angle shape, the flow rate of the liquid will slow down when flowing through here, which will cause a part of the thick solution or the impurities in the solution to accumulate at the right angle, which is very likely to affect the overall heat exchange efficiency. At the same time, if impurities accumulate here, it is also very difficult to clean. Summary of the Invention

[0003] The purpose of the present invention is to provide a heat exchange equipment for chemical production to solve the problems raised in the above background art.

[0004] To achieve the above purpose, the present invention provides the following technical solution: A heat exchange equipment for chemical production, including an equipment base, a heat exchange shell, and a sealing shell, characterized in that: the heat exchange shell is installed on the equipment base and is provided with a liquid inlet interface, the sealing shell is installed at the head and tail ends of the heat exchange shell through bolts, a plurality of baffles are arranged at intervals in the heat exchange shell, a plurality of heat exchange tubes penetrating the heat exchange shell are arranged in the baffles, a scraping device is arranged on the same side of the root of the baffle as the liquid inlet interface, and the scraping device will clean the root of the baffle during the heat exchange process of the equipment.

[0005] Preferably, the heat exchange shell is provided with a liquid inlet interface and a liquid outlet interface, the liquid inlet interface and the liquid outlet interface are respectively arranged at both ends of the heat exchange shell, and the heat exchange shell is also provided with a plurality of junction boxes, and the number of the junction boxes corresponds to the number of the baffles.

[0006] Preferably, the end of the sealing shell is provided with a joint, the sealing shells are symmetrically arranged at both ends of the heat exchange shell, and sealing plates are arranged at the interfaces between the sealing shells at both ends and the heat exchange shell, and both ends of the heat exchange tube are located in the sealing plates and penetrate the sealing plates.

[0007] Preferably, the baffles are welded and fixed in the heat exchange shell, the baffles are incomplete circles, and each baffle is arranged upside down with the adjacent two baffles.

[0008] Preferably, the scraping device includes a conductive circular ring, an elastic scraping buckle, a rotating ring and a driving electrode. The conductive circular ring is fixed in the inner wall of the heat exchange housing. The tail of the elastic scraping buckle is connected to the conductive circular ring. An insulating baffle is provided between the conductive circular ring and the rotating ring. The rotating ring is rotatably installed in the inner wall of the heat exchange housing. A buckling block is provided on the inner ring wall of the rotating ring. There are multiple groups of driving electrodes, and the driving electrodes are evenly arranged on both sides of the conductive circular ring and the rotating ring and installed in the heat exchange housing.

[0009] Preferably, a sliding groove is provided on the conductive circular ring.

[0010] Preferably, the elastic scraping buckle includes a bent portion, a buckling handle and a scraping portion. A sliding head matching the sliding groove is provided at the head of the bent portion. The bent portion is connected to the buckling handle. A buckling cylinder is provided on the buckling handle. The scraping portion is located at the end of the buckling handle. Scraping protrusions are provided on the working surface of the scraping portion.

[0011] Preferably, a buckling groove is provided on the buckling block, and the inner diameter of the buckling groove is larger than that of the buckling cylinder.

[0012] Compared with the prior art, the beneficial effects of the present invention are:

[0013] 1. The invention can automatically start to rotate after the chemical liquid enters the heat exchange housing through the provided scraping device, and clean the root of the baffle through the provided elastic scraping buckle to prevent the chemical liquid or impurities contained in the liquid from staying here. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic structural diagram of the present invention;

[0015] Figure 2 is a schematic cross-sectional structural diagram of the present invention;

[0016] Figure 3 is Figure 2 an enlarged view of the structure at C inside;

[0017] Figure 4 is a schematic structural diagram of the scraping device;

[0018] Figure 5 is Figure 4 an enlarged view of the structure at D inside;

[0019] Figure 6 is a schematic structural diagram of the elastic scraping buckle and the buckling block.

[0020] In the figure: 1 - equipment base;

[0021] 2 - heat exchange housing; 21 - liquid inlet interface; 22 - liquid outlet interface; 23 - junction box;

[0022] 3 - Sealing housing; 31 - Connector; 32 - Sealing plate;

[0023] 4 - Baffle;

[0024] 5 - Heat exchange tube;

[0025] 6 - Scratching device; 61 - Conductive ring; 661 - Sliding groove;

[0026] 62 - Elastic scratching buckle; 621 - Bent part; 622 - Buckling handle; 623 - Scratching part; 624 - Sliding head; 625 - Buckling cylinder; 626 - Scratching boss;

[0027] 63 - Rotating ring; 64 - Driving electrode; 65 - Insulating baffle; 66 - Buckling block; 661 - Buckling groove. Detailed implementation mode

[0028] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without making creative efforts belong to the scope of protection of the present invention.

[0029] Please refer to Figures 1 to 6 , the present invention provides a technical solution: a heat exchange device for chemical production, including an equipment base 1, a heat exchange housing 2 and a sealing housing 3, characterized in that: the heat exchange housing 2 is installed on the equipment base 1 and is provided with a liquid inlet interface 21, the sealing housing 3 is installed at both ends of the heat exchange housing 2 by bolts, the heat exchange housing 2 is provided with a plurality of baffles 4 arranged at intervals, the baffles 4 are provided with a plurality of heat exchange tubes 5 penetrating the heat exchange housing 2, and a scratching device 6 is provided on the same side of the root of the baffle 4 as the liquid inlet interface 21, and the scratching device 6 will clean the root of the baffle 4 during the heat exchange process of the equipment.

[0030] In this embodiment, the heat exchange housing 2 is provided with a liquid inlet interface 21 and a liquid outlet interface 22, the liquid inlet interface 21 and the liquid outlet interface 22 are respectively arranged at both ends of the heat exchange housing 2, the heat exchange housing 2 is further provided with a plurality of junction boxes 23, the number of the junction boxes 23 corresponds to the number of the baffles 4, the liquid inlet 21 is used to feed chemical solutions, the liquid outlet 22 is used to discharge chemical solutions, and the arranged junction boxes 23 are electrically connected to the conductive ring 61 so that the conductive ring 61 can be connected to an external power supply and the conductive ring 61 can be electrified.

[0031] In this embodiment, a joint 31 is provided at the end of the sealing shell 3, and the sealing shell 3 is symmetrically arranged at the two ends of the heat exchange shell 2. A sealing plate 32 is provided at the interface between the sealing shell 3 and the heat exchange shell 2 at both ends. Both ends of the heat exchange tube 5 are located in the sealing plate 32 and penetrate the sealing plate 32. Liquid for heat exchange is fed into the joint 31 of the sealing shell 3 at one end, so that the liquid flows through the heat exchange shell 2 through the heat exchange tube 5, and finally flows out from the joint 31 of the sealing shell 3 at the other end to complete the heat exchange.

[0032] In this embodiment, the baffle 4 is welded and fixed in the heat exchange shell 2. The baffle 4 is an incomplete circle. Each baffle 4 and the two adjacent baffles 4 are arranged upside down, so that all the baffles form a horizontal "S"-shaped liquid flow channel in the heat exchange shell 2, thereby increasing the efficiency of heat exchange.

[0033] In this embodiment, the scraping device 6 includes a conductive ring 61, an elastic scraping buckle 62, a rotating ring 63 and a driving electrode 64, wherein the conductive ring 61 is fixed in the inner wall of the heat exchange shell 2, the tail of the elastic scraping buckle 62 is connected to the conductive ring 61, an insulating baffle 65 is provided between the conductive ring 61 and the rotating ring 63, the rotating ring 62 is rotatably installed in the inner wall of the heat exchange shell 2, a buckling block 66 is provided on the inner ring wall of the rotating ring 63, and a plurality of driving electrodes 64 are provided, wherein the driving electrodes 64 are evenly arranged on both sides of the conductive ring 61 and the rotating ring 63 and are installed in the heat exchange shell 2, when liquid flows into the liquid inlet interface 21 of the heat exchange shell 2 The flowing liquid will press the elastic scraper buckle 62 downward in the direction of liquid flow, so that the elastic scraper buckle 62 is pressed into the snap-fit ​​block 66. Since one end of the elastic scraper buckle 62 is connected to the conductive ring 61, the snap-fit ​​block 66 will be charged. At the same time, since the snap-fit ​​block 66 is fixed on the rotating ring 63 and the rotating ring 63 is rotatably connected in the heat exchange shell 2, the charged snap-fit ​​block 66 will start to rotate under the action of the driving electrode 64, and at the same time, it will also drive the elastic scraper buckle 62 to start rotating. After being pressed down, the elastic scraper buckle 62 contacts the root of the baffle 4, and cleans and disturbs the root of the baffle 4 during the rotation process, driving the liquid flow here to prevent liquid or impurities from being retained here.

[0034] In this embodiment, a sliding groove 611 is provided on the conductive ring 61, and the sliding groove 611 is connected to the sliding head 624 of the elastic scraper buckle 62, so that the rotating elastic scraper buckle 62 can move along the direction of the sliding groove 611, and can also achieve conductivity through the contact here. During use, the conductive ring 61 is made of or partially made of thermistor material to achieve a larger current when the temperature is high, increase the power of the elastic scraper buckle 62 and the snap block 66, and at the same time increase the power of the driving electrode 64 by an external power supply, thereby achieving the purpose of increasing the rotation speed.

[0035] In this embodiment, the elastic scraping buckle 62 includes a bending portion 621, a buckling handle 622 and a scraping portion 623. A sliding head 624 adapted to the sliding groove 611 is provided at the head of the bending portion 621. The bending portion 621 is connected to the buckling handle 622. A buckling cylinder 625 is provided on the buckling handle 622. The scraping portion 623 is located at the end of the buckling handle 622. Scraping protrusions 626 are provided on the working surface of the scraping portion 623. The bending portion 621 is made of an easily bendable conductive material so that when liquid flows through, it can be pressed at the bending portion 621 and bend quickly. The buckling cylinder 625 is made of a material with a relatively large coefficient of thermal expansion, so that the buckling cylinder 625 bent and pressed into the buckling block 66 increases in volume when heated, thereby buckling inside the buckling block 66 to prevent the elastic scraping buckle 62 from bouncing open. After the bending portion 621 of the elastic scraping buckle 62 is bent and the elastic scraping buckle 62 is buckled inside the buckling block 66, the scraping portion 623 abuts against the root of the baffle 4 and cleans and disturbs this place when rotating.

[0036] In this embodiment, a buckling groove 661 is provided on the buckling block 66. The inner diameter of the buckling groove 661 is larger than that of the buckling cylinder 625. Since the inner diameter of the buckling groove 661 is larger than that of the buckling cylinder 625, in the natural state or after heat exchange is completed, the elastic scraping buckle 62 can automatically pop out of the buckling block 66. The device is powered off and no longer rotates, thus stopping the cleaning and disturbance of the root of the baffle 4.

[0037] Working principle: First, a chemical solution is fed in from the liquid inlet 21, and a liquid for heat exchange is fed in from the joint 31 of the sealing housing 3 at one end. The chemical solution fed in from the liquid inlet 21 will press the elastic scraping buckle 62 downward in the direction of liquid flow, causing the buckling cylinder 625 of the elastic scraping buckle 62 to be pressed into the buckling block 66. The buckling cylinder 625 increases in volume when heated by the chemical solution, thereby buckling inside the buckling block 66 to prevent the elastic scraping buckle 62 from bouncing open. Since one end of the elastic scraping buckle 62 is connected to the conductive ring 61, the buckling block 66 will be electrified. At the same time, since the buckling block 66 is fixed on the rotating ring 63 and the rotating ring 63 is rotatably connected in the heat exchange housing 2, the electrified buckling block 66 will start to rotate under the action of the driving electrode 64, and at the same time, the elastic scraping buckle 62 will also be driven to rotate. The pressed-down elastic scraping buckle 62 contacts the root of the baffle 4 and cleans and disturbs the root of the baffle 4 during rotation, driving the liquid flow here to prevent liquid or impurities from staying here. After heat exchange is completed, the liquid in the heat exchange housing 2 is emptied, and the temperature in the heat exchange housing 2 drops. Since the inner diameter of the buckling groove 661 is larger than that of the buckling cylinder 625, the elastic scraping buckle 62 automatically pops out of the buckling block 66, the buckling block 66 is powered off, and the rotating ring 62 no longer rotates, thus stopping the cleaning and disturbance of the root of the baffle 4.

[0038] Based on the above, the invention can automatically start to rotate after the chemical liquid enters the heat exchange housing through the provided scraping device, and clean the root of the baffle through the provided elastic scraping buckle to prevent the chemical liquid or impurities contained in the liquid from staying here.

[0039] As is known by technical common sense, the present invention can be implemented by other embodiments that do not depart from its spiritual essence or essential features. Therefore, the above-disclosed embodiments are illustrative in all aspects and not exclusive. All changes within the scope of the present invention or within the scope equivalent to the present invention are encompassed by the present invention.

Claims

1. A heat exchange device for chemical production, comprising a device base (1), a heat exchange housing (2) and a sealing housing (3). Characterized in that: The heat exchange housing (2) is installed on the device base (1) and is provided with a liquid inlet interface (21). The sealing housing (3) is installed at both the head and tail ends of the heat exchange housing (2) by bolts. A plurality of baffles (4) are arranged at intervals in the heat exchange housing (2). A plurality of heat exchange tubes (5) penetrating the heat exchange housing (2) are arranged in the baffles (4). A scraping device (6) is provided on the same side of the root of the baffle (4) as the liquid inlet interface (21). The scraping device (6) will clean the root of the baffle (4) during the heat exchange process of the device. The scraping device (6) includes a conductive ring (61), an elastic scraping buckle (62), a rotating ring (63) and a driving electrode (64). The conductive ring (61) is fixed in the inner wall of the heat exchange housing (2). The tail of the elastic scraping buckle (62) is connected to the conductive ring (61). An insulating baffle (65) is provided between the conductive ring (61) and the rotating ring (63). The rotating ring (63) is rotatably installed in the inner wall of the heat exchange housing (2). A buckling block (66) is provided on the inner ring wall of the rotating ring (63). A plurality of groups of driving electrodes (64) are provided. The driving electrodes (64) are evenly arranged on both sides of the conductive ring (61) and the rotating ring (63) and are installed in the heat exchange housing (2). A sliding groove (611) is provided on the conductive ring (61). The elastic scraping buckle (62) includes a bending part (621), a buckling handle (622) and a scraping part (623). A sliding head (624) cooperating with the sliding groove (611) is provided at the head of the bending part (621). The bending part (621) is connected to the buckling handle (622). A buckling cylinder (625) is provided on the buckling handle (622). The scraping part (623) is located at the end of the buckling handle (622). A scraping boss (626) is provided on the working surface of the scraping part (623). A buckling groove (661) is provided on the buckling block (66). The inner diameter of the buckling groove (661) is larger than that of the buckling cylinder (625).

2. A heat exchange device for chemical production according to claim 1, Characterized in that: The heat exchange housing (2) is further provided with a liquid outlet interface (22). The liquid inlet interface (21) and the liquid outlet interface (22) are respectively arranged at both ends of the heat exchange housing (2). The heat exchange housing (2) is further provided with a plurality of junction boxes (23). The number of the junction boxes (23) corresponds to the number of the baffles (4).

3. A heat exchange device for chemical production according to claim 1, Characterized in that: The end of the sealing housing (3) is provided with a joint (31). The sealing housing (3) is symmetrically arranged at both ends of the heat exchange housing (2). Sealing plates (32) are provided at the interfaces between the sealing housings (3) at both ends and the heat exchange housing (2). Both ends of the heat exchange tube (5) are located within the sealing plates (32) and penetrate through the sealing plates (32).

4. A heat exchange device for chemical production according to claim 1, characterized in that: the baffle plate (4) is fixedly welded in the heat exchange housing (2), the baffle plate (4) is an incomplete circle, and each baffle plate (4) is arranged upside down with the adjacent two baffle plates (4).

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