Plate heat exchanger convenient to maintain

Abstract

The utility model belongs to the technical field of plate heat exchangers, and particularly relates to a plate heat exchanger convenient to maintain, which comprises a fixing plate, guide rods are connected to the surfaces of one sides of two ends of the fixing plate, and heat exchange sheets are connected to the surfaces of the outer sides of the guide rods. According to the utility model, one end of the connecting screw rod is connected with the fixing plate through the positioning block by virtue of the mutual matching between the positioning block and the inserting block, and then the inserting block is inserted into the slot on the positioning block to fix the position of the positioning block, so that one end of the connecting screw rod is fixed on the fixing plate; a motor only needs to drive a two-way screw to rotate in a bearing, a movable block on the two-way screw can drive one end of an insertion block to be separated from a positioning block, at the moment, a movable plate is pulled to enable a connecting screw to be separated from a fixed plate, and an operator can maintain and replace heat exchange pieces on a guide rod; and the movable plate can be moved without dismounting the nut, so that convenience is brought to maintenance of the plate heat exchanger.

Description

Technical Field

[0001] This utility model belongs to the technical field of plate heat exchangers, and specifically relates to a plate heat exchanger that is easy to maintain. Background Technology

[0002] Plate heat exchangers are high-efficiency heat exchangers composed of a series of metal plates with a certain corrugated shape. Plate heat exchangers are widely used in many fields due to their advantages such as high efficiency, compactness and economy.

[0003] In water-based cooling systems, operators typically install plate heat exchangers to heat or cool water. However, when using a plate heat exchanger, some heat exchange plates may become ineffective and require maintenance or replacement. In such cases, operators need to remove the nuts on the connecting screws between the fixed plate and the movable plate to move the movable plate. Only then can the heat exchange plates on the guide rod be removed for replacement. This process requires removing a large number of nuts, which is cumbersome and time-consuming, thus causing inconvenience to the maintenance of the plate heat exchanger.

[0004] Therefore, this utility model provides a plate heat exchanger that is easy to maintain in order to solve the above problems. Utility Model Content

[0005] The purpose of this utility model is to provide a plate heat exchanger that is easy to maintain. It aims to solve the problem in the prior art that when the heat exchange plates on the plate heat exchanger need to be disassembled for maintenance, all the nuts on the connecting screws need to be removed, which is cumbersome and time-consuming, and brings inconvenience to the maintenance of the plate heat exchanger.

[0006] To achieve the above objectives, this utility model provides the following technical solution: a plate heat exchanger that is easy to maintain, comprising a fixed plate, guide rods connected to one side surface at both ends of the fixed plate, heat exchange plates connected to the outer surface of the guide rods, and a movable plate slidably connected to one end of the guide rods. A connecting screw is connected to one side surface of the movable plate, a nut is connected to one end of the connecting screw, and a positioning block is connected to the other end surface of the connecting screw. One end of the positioning block extends into a positioning groove opened on one side surface of the fixed plate, and a protrusion is connected to the other side surface of the fixed plate. A through-hole movable groove is formed on the top surface of the protrusion. Bearings are connected to both ends of the inner side of the movable groove. A bidirectional screw is connected between the two bearings. One end of the bidirectional screw extends into the protrusion and is connected to the output end of the motor. Movable blocks are connected through both ends of the bidirectional screw. Insert blocks are connected to one side of both ends of the movable blocks. One end of the insert block extends through the fixed plate and into the slot. The slot is formed on one end surface of the positioning block. Support feet are connected to the bottom surfaces of both the fixed plate and the movable plate. Movable mechanisms are also provided on the bottom surfaces of both the fixed plate and the movable plate.

[0007] To facilitate the movement of the plate heat exchanger, as a preferred embodiment of this utility model for easy maintenance, the moving mechanism includes: an electric push rod, a mounting plate, a slider, a slide groove, and a pulley. The bottom surfaces of both the fixed plate and the movable plate are connected to the electric push rod. The bottom surface of the movable end of the electric push rod is connected to the mounting plate. The two ends of the mounting plate are connected to the slider. One end of the slider extends into a slide groove opened on the inner surface of the support foot. The bottom surface of the mounting plate is connected to the pulley.

[0008] In order to facilitate the placement of the positioning block, as a preferred embodiment of this utility model of a plate heat exchanger that is easy to maintain, the positioning block is slidably connected to the fixed plate through a positioning groove.

[0009] In order to achieve normal operation control of the motor and electric push rod and drive the bidirectional screw to rotate, as a preferred plate heat exchanger of this utility model that is easy to maintain, the motor and electric push rod are electrically connected to an external power supply through a control switch, and the output end of the motor is fixedly connected to the bidirectional screw.

[0010] In order to enable the moving block to move and the moving block to fix the position of the positioning block, as a preferred plate heat exchanger of this utility model that is easy to maintain, the moving block and the bidirectional screw are connected by a thread, the moving block is connected to the protrusion through a moving groove, and the moving block is connected to the positioning block through a slot.

[0011] To ensure stability when the mounting plate moves, as a preferred type of plate heat exchanger for easy maintenance according to this utility model, the slider is connected to the support foot through a sliding groove.

[0012] Compared with the prior art, the beneficial effects of this utility model are:

[0013] This invention utilizes the interplay between a positioning block and an insert block to connect one end of the connecting screw to the fixed plate via the positioning block. The insert block is then inserted into a slot on the positioning block to fix its position, thus securing one end of the connecting screw to the fixed plate. When maintenance or replacement of the heat exchanger plates is required, simply rotate the bidirectional screw within the bearing using a motor. This causes the moving block on the bidirectional screw to pull one end of the insert block out of the positioning block. Pulling the movable plate then separates the connecting screw from the fixed plate, allowing operators to easily maintain and replace the heat exchanger plates on the guide rod without needing to remove the nut to move the movable plate, thereby simplifying the maintenance of the plate heat exchanger.

[0014] This utility model features a movable mechanism that uses an electric push rod to move the mounting plate downwards. This allows the pulleys at the bottom of the mounting plate to contact the ground and support the plate heat exchanger. This enables operators to easily move the plate heat exchanger using the pulleys, avoiding manual handling and making the movement of the plate heat exchanger more convenient. Attached Figure Description

[0015] The accompanying drawings are provided to further illustrate the present invention and form part of the specification. They are used together with the embodiments of the present invention to explain the present invention, but do not constitute a limitation thereof. In the drawings:

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 2 This is a top view of the structure of this utility model;

[0018] Figure 3 This is a schematic diagram of the partial explosion structure of this utility model;

[0019] Figure 4 This is a schematic diagram of a partial explosion at the moving mechanism of this utility model.

[0020] In the diagram: 1. Fixed plate; 2. Guide rod; 3. Heat exchange fin; 4. Movable plate; 5. Connecting screw; 6. Nut; 7. Positioning block; 8. Positioning groove; 9. Protrusion; 10. Moving groove; 11. Bearing; 12. Double-acting screw; 13. Motor; 14. Moving block; 15. Insert block; 16. Slot; 17. Support foot; 18. Electric push rod; 19. Mounting plate; 20. Slider; 21. Slide groove; 22. Pulley. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Please see Figures 1-4This utility model provides the following technical solution: a plate heat exchanger that is easy to maintain, including a fixed plate 1, with guide rods 2 connected to one side surface at both ends of the fixed plate 1, heat exchange plates 3 connected to the outer surface of the guide rods 2, and a movable plate 4 slidably connected to one end of the guide rods 2. A connecting screw 5 is connected to one side surface of the movable plate 4, and a nut 6 is connected to one end of the connecting screw 5. A positioning block 7 is connected to the other end surface of the connecting screw 5, with one end of the positioning block 7 extending into a positioning groove 8 opened on one side surface of the fixed plate 1. A protrusion 9 is connected to the other side surface of the fixed plate 1, and a through-hole is opened on the top surface of the protrusion 9. The movable groove 10 has bearings 11 connected to both ends of its inner side surface. A bidirectional screw 12 is connected between the two bearings 11. One end of the bidirectional screw 12 extends into the protrusion 9 and is connected to the output end of the motor 13. Movable blocks 14 are connected through both ends of the bidirectional screw 12. Insert blocks 15 are connected to one side of both ends of the movable blocks 14. One end of the insert block 15 extends through the fixed plate 1 and into the slot 16. The slot 16 is opened on one end surface of the positioning block 7. Support feet 17 are connected to the bottom surfaces of both the fixed plate 1 and the movable plate 4. Movable mechanisms are also provided on the bottom surfaces of both the fixed plate 1 and the movable plate 4.

[0023] Slide the positioning block 7 on the connecting screw 5 into the positioning groove 8. Then start the motor 13, so that the output end of the motor 13 drives the bidirectional screw 12 to rotate in the bearing 11. This allows the movable plate 4 to move the insert block 15, so that the insert block 15 slides into the slot 16 on the positioning block 7, thereby fixing the position of the positioning block 7 in the positioning groove 8 and fixing the position of the connecting screw 5 on the fixed plate 1. Then slide the heat exchange plate 3 onto the guide rod 2, and then slide the movable plate 4 through the guide rod 2 and the connecting screw 5. By pushing the movable plate 4, the heat exchange plate 3 is pressed together. Then tighten the nut 6 onto the connecting screw 5, fixing the position of the movable plate 4 on the connecting screw 5. At this time, the fixed plate 1 and the movable plate 4 can clamp and fix the heat exchange plate 3, thus completing the assembly operation of the plate heat exchanger.

[0024] Preferably, the moving mechanism includes an electric push rod 18, a mounting plate 19, a slider 20, a groove 21, and a pulley 22. The bottom surfaces of the fixed plate 1 and the movable plate 4 are both connected to the electric push rod 18. The bottom surface of the movable end of the electric push rod 18 is connected to the mounting plate 19. The two ends of the mounting plate 19 are connected to the slider 20. One end of the slider 20 extends into the groove 21 opened on the inner surface of the support foot 17. The bottom surface of the mounting plate 19 is connected to the pulley 22.

[0025] In practical use, the electric push rod 18 is activated, causing the movable end of the electric push rod 18 to move the mounting plate 19 downward. At this time, the sliders 20 at both ends of the mounting plate 19 will also slide in the slide groove 21 to ensure the movement trajectory of the mounting plate 19. In this way, the mounting plate 19 will drive the bottom pulley 22 to contact the ground, so that the support foot 17 will be suspended in the air. In this way, the pulley 22 can support the plate heat exchanger, allowing the operator to move the plate heat exchanger through the pulley 22.

[0026] Preferably, the positioning block 7 is slidably connected to the fixing plate 1 through the positioning groove 8.

[0027] In actual use, the positioning block 7 can be slidably placed into the positioning groove 8 on the fixing plate 1.

[0028] Preferably, the motor 13 and the electric push rod 18 are electrically connected to an external power source via a control switch, and the output end of the motor 13 is fixedly connected to the bidirectional screw 12.

[0029] In practical use, the motor 13 and the electric push rod 18 can be controlled by a switch. When the output end of the motor 13 rotates, it can drive the bidirectional screw 12 to rotate in the bearing 11.

[0030] Preferably, the movable block 14 and the bidirectional screw 12 are connected by a thread, the movable block 14 is connected to the protrusion 9 by a movable groove 10, and the insert block 15 is connected to the positioning block 7 by a slot 16.

[0031] In actual use, when the bidirectional screw 12 rotates, the moving block 14 on the bidirectional screw 12 will move along the moving groove 10. In this way, the moving block 14 will drive the insert block 15 to move, so that one end of the insert block 15 slides out of the slot 16, and the positioning block 7 can slide out of the positioning groove 8.

[0032] Preferably, the slider 20 is slidably connected to the support foot 17 via the groove 21.

[0033] In actual use, when the mounting plate 19 moves, the slider 20 will also slide in the slide groove 21 to ensure the movement trajectory of the mounting plate 19.

[0034] Working principle: When using this easy-to-maintain plate heat exchanger, if the heat exchange plates 3 clamped on the guide rod 2 between the fixed plate 1 and the movable plate 4 need to be disassembled and replaced, simply start the motor 13 by switching on the motor. The output end of the motor 13 will drive the bidirectional screw 12 to rotate in the bearing 11. This will cause the moving block 14 on the bidirectional screw 12 to move along the moving groove 10. The moving block 14 will then drive the insert block 15 to move, allowing one end of the insert block 15 to slide out of the slot 16. At this time, pull the movable plate 4, which will drive the connecting screw 5 to move, allowing the positioning block 7 at one end of the connecting screw 5 to separate from the positioning groove 8. Continue pulling the movable plate 4, and one end of the guide rod 2 will separate from the movable plate 4. At this time, the heat exchange plates 3 can slide off the guide rod 2, allowing the operator to replace the heat exchange plates 3 without having to do all the work. Only by disassembling the nut 6 on the connecting screw 5 can the movable plate 4 be separated from the guide rod 2, thus facilitating the maintenance of the plate heat exchanger. Next, the electric push rod 18 is activated, causing the movable end of the electric push rod 18 to move the mounting plate 19 downward. At this time, the sliders 20 at both ends of the mounting plate 19 will also slide in the slide groove 21 to ensure the movement trajectory of the mounting plate 19. In this way, the mounting plate 19 will drive the bottom pulley 22 to contact the ground, so that the support foot 17 will be suspended in the air. In this way, the pulley 22 can support the plate heat exchanger, and the plate heat exchanger can be easily moved. When the plate heat exchanger is moved to the designated position, the pulley 22 is moved upward again, so that the support foot 17 will contact the ground again, ensuring the stability of the plate heat exchanger when placed. In this way, the moving mechanism facilitates the movement of the plate heat exchanger.

[0035] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A plate heat exchanger that is easy to maintain, comprising a fixed plate (1), characterized in that: The fixed plate (1) has guide rods (2) connected to one side surface at both ends. Heat exchange fins (3) are connected to the outer surface of the guide rods (2). A movable plate (4) is slidably connected to one end of the guide rods (2). A connecting screw (5) is connected to one side surface of the movable plate (4). A nut (6) is connected to one end of the connecting screw (5). A positioning block (7) is connected to the other end surface of the connecting screw (5). One end of the positioning block (7) extends into a positioning groove (8) opened on one side surface of the fixed plate (1). A protrusion (9) is connected to the other side surface of the fixed plate (1). A through moving groove (10) is opened on the top surface of the protrusion (9). The inner two ends of the moving groove (10) are... A bearing (11) is connected to the surface of the two bearings (11), and a bidirectional screw (12) is connected between the two bearings (11). One end of the bidirectional screw (12) extends into the protrusion (9) and is connected to the output end of the motor (13). A moving block (14) is connected through both ends of the bidirectional screw (12). A plug (15) is connected to one side surface of both ends of the moving block (14). One end of the plug (15) extends through the fixed plate (1) and into the slot (16). The slot (16) is opened on one end surface of the positioning block (7). Support feet (17) are connected to the bottom surfaces of the fixed plate (1) and the movable plate (4). A moving mechanism is also provided on the bottom surfaces of the fixed plate (1) and the movable plate (4).

2. The plate heat exchanger for easy maintenance according to claim 1, characterized in that: The moving mechanism includes: an electric push rod (18), a mounting plate (19), a slider (20), a groove (21), and a pulley (22). The bottom surfaces of the fixed plate (1) and the movable plate (4) are both connected to the electric push rod (18). The bottom surface of the movable end of the electric push rod (18) is connected to the mounting plate (19). The two ends of the mounting plate (19) are connected to the slider (20). One end of the slider (20) extends into the groove (21) opened on the inner surface of the support foot (17). The bottom surface of the mounting plate (19) is connected to the pulley (22).

3. The easy-to-maintain plate heat exchanger according to claim 1, characterized in that: The positioning block (7) is slidably connected to the fixing plate (1) through the positioning groove (8).

4. The easy-to-maintain plate heat exchanger according to claim 1, characterized in that: The motor (13) and the electric push rod (18) are electrically connected to an external power source via a control switch, and the output end of the motor (13) is fixedly connected to the bidirectional screw (12).

5. A plate heat exchanger for easy maintenance according to claim 1, characterized in that: The movable block (14) is threadedly connected to the bidirectional screw (12), the movable block (14) is slidably connected to the protrusion (9) through the movable groove (10), and the insert (15) is slidably connected to the positioning block (7) through the slot (16).

6. A plate heat exchanger for easy maintenance according to claim 2, characterized in that: The slider (20) is slidably connected to the support foot (17) via the groove (21).

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