Corrosion-resistant plate heat exchanger with heat exchange core capable of being pulled out

Abstract

The utility model discloses a corrosion-resistant plate heat exchanger with a heat exchange core capable of being pulled out, which comprises a bottom plate, a heat exchange core body is clamped above the bottom plate, a heat exchange core capable of being pulled out is arranged above the heat exchange core body, and the heat exchange core capable of being pulled out is arranged above the heat exchange core body. The heat exchange core outward-pulling mechanism comprises a top plate, a connecting block, a rotating shaft, a fixing column, a protruding block, a protruding groove, a handle, a first fixing block and the like. According to the corrosion-resistant plate heat exchanger with the heat exchange cores capable of being pulled out, by arranging the heat exchange core pulling-out mechanism, when a single heat exchange core is damaged, the single heat exchange core can be rapidly replaced, the replacement time can be greatly saved, meanwhile, the protection mechanism is arranged, and a protection plate is arranged on the outer side of the heat exchanger; according to the heat exchanger, the risk that a heat exchange core in the heat exchanger is scratched can be effectively avoided, in addition, an anti-blocking mechanism and a detachable filter screen are arranged, liquid entering the inner walls of the corner holes can be filtered, impurities in the liquid are effectively separated on the outer sides of the corner holes, and the situation that the corner holes are blocked can be avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of plate heat exchangers, in particular to a corrosion-resistant plate heat exchanger with a heat exchange core that can be drawn out. Background Art

[0002] Plate heat exchanger is a high-efficiency heat exchanger composed of a series of metal sheets with a certain corrugated shape. Its working principle is to allow two heat transfer liquids to pass through the four corner holes on the metal plate. The plate is equipped with a sealing gasket to seal the fluid channel and guide the fluid to flow alternately into each flow channel to form heat exchange. There are many kinds of corrosion-resistant plate heat exchangers currently available on the market, but there are still some disadvantages;

[0003] The existing corrosion-resistant plate heat exchanger allows two liquids for heat transfer to pass through by setting corner holes. The liquid generally contains certain impurities. The liquid flowing in the corner holes for a long time will cause the corner holes to be blocked. At the same time, the heat exchange core inside the heat exchanger is exposed to the air for a long time. There is no protection mechanism and it is easy to be scratched by external factors. In addition, the heat exchange core is damaged and needs to be moved one by one for replacement, which cannot be replaced quickly. For example, the Chinese utility model patent with the authorization announcement number CN219656676U discloses a corrosion-resistant plate heat exchanger, including a base, the top of which is fixedly connected to two fixed plates, a heat exchange plate, which is located between the two fixed plates, and a crossbeam, whose two ends are respectively fixedly connected to the two fixed plates. A connecting mechanism is provided in the middle of the crossbeam, and the connecting mechanism includes a connecting block, a limit block and an elastic component. A through groove is provided in the middle of the crossbeam, and the connecting block is slidably connected to the inner cavity of the through groove. Two placement grooves are provided on both sides of the through groove, and the elastic component is located in the inner cavity of the placement groove. Fixed holes are provided on both sides of the connecting block, and the elastic component cooperates with the inner cavity of the fixed hole. The utility model utilizes a setting method in which a connection block, a limit block and an elastic component are matched. When individual heat exchange plates are damaged, the connection block can be removed through the elastic component, and the damaged heat exchange plate can be directly taken out from the through groove for replacement without having to be disassembled from the beginning, thus saving a lot of manpower and material resources. However, this device allows two liquids for heat transfer to pass through by setting corner holes. The liquid generally contains certain impurities. Long-term flow of the liquid in the corner holes will cause the corner holes to become clogged. At the same time, the heat exchange core inside the heat exchanger is exposed to the air for a long time. There is no protection mechanism and it is easy to be scratched by external factors. In addition, if the heat exchange core is damaged, it needs to be moved one by one for replacement, and it cannot be replaced quickly. Therefore, we propose a corrosion-resistant plate heat exchanger with an externally withdrawn heat exchange core to solve the above-mentioned problems. Utility Model Content

[0004] The purpose of the present utility model is to provide a corrosion-resistant plate heat exchanger with an externally extractable heat exchange core, so as to solve the problems raised in the above-mentioned background technology. For the current corrosion-resistant plate heat exchanger with an externally extractable heat exchange core, by setting corner holes, two liquids for heat transfer can pass through. Generally, there will be certain impurities in the liquids. The long-term flow of the liquids in the corner holes will cause the corner holes to become blocked. At the same time, the heat exchange core inside the heat exchanger is exposed to the air for a long time without a protection mechanism and is easily scratched by external factors. In addition, when the heat exchange core is damaged, it needs to be replaced one by one, and it cannot be replaced quickly.

[0005] To achieve the above purpose, the present utility model provides the following technical solutions: A corrosion-resistant plate heat exchanger with an externally extractable heat exchange core, including:

[0006] A bottom plate, on which the heat exchange core body is snap-fitted above.

[0007] It also includes:

[0008] Above the heat exchange core body, there is an externally extractable mechanism for the heat exchange core. The externally extractable mechanism for the heat exchange core includes a top plate, a connecting block, a rotating shaft, a fixing column, a convex block, a convex groove, a handle, a first fixing block, a second fixing block, and a first bolt. On the upper front and rear sides of the heat exchange core body, the top plates are symmetrically snap-fitted. The outer sides of the top plates are rotatably connected to the connecting blocks, and the inner sides of the connecting blocks are rotatably connected to the rotating shafts, and the rotating shafts are fixedly connected to the top plates.

[0009] Corner holes, inside which there is an anti-blocking mechanism. The anti-blocking mechanism includes a second filter screen, a third fixing block, a connecting rod, a moving block, a spring, and a support rod. The third fixing blocks are symmetrically and fixedly installed on the upper and lower sides inside the corner holes. The outer sides of the third fixing blocks are provided with connecting rods, and the connecting rods penetrate through the upper and lower sides inside the second filter screen, and the second filter screen is arranged inside the corner holes.

[0010] Preferably, the fixing columns are slidably installed inside the connecting blocks, and the fixing columns are equidistantly and fixedly installed inside the upper part of the side plates. The side plates are symmetrically arranged on the outer sides of the heat exchange core body.

[0011] Preferably, a convex block is installed below the connecting block, and the convex block is snap-fitted with the convex groove, and the convex groove is arranged inside the upper part of the side plate.

[0012] Preferably, handles are symmetrically arranged inside the left and right sides of the top plate. A second fixing block is installed above the left side of the top plate, and a first fixing block is installed above the right side of the top plate. The first fixing block and the second fixing block are fixed by a first bolt.

[0013] Preferably, protective plates are symmetrically arranged on the left and right sides of the heat exchange core body, a first filter screen is arranged inside the protective plates, and the protective plates and the side plates are fixed by second bolts.

[0014] Preferably, angle holes are formed in the inner side of the side plates.

[0015] Preferably, a moving block is arranged on the outer side of the connecting rod, the moving block is slidably connected with the angle holes, and a support rod is closely attached to the outer side of the moving block.

[0016] Preferably, a spring is fixedly connected to the inner side of the support rod, and the spring is fixedly connected to the connecting rod on the inner side.

[0017] Compared with the prior art, the beneficial effects of the present utility model are as follows: for this corrosion-resistant plate heat exchanger with an externally extractable heat exchange core, by setting an externally extractable mechanism for the heat exchange core, when a single heat exchange core is damaged, it can be quickly replaced individually, which will greatly save the replacement time. At the same time, a protection mechanism is set, and protective plates are arranged on the outer side of the heat exchanger, which can effectively avoid the risk of the heat exchange core inside the heat exchanger being scratched. In addition, an anti-blocking mechanism is set, and a detachable filter screen is arranged to filter the liquid entering the inner wall of the angle hole, effectively separating the impurities in the liquid outside the angle hole, and avoiding the situation of blockage of the angle hole;

[0018] 1. There are a bottom plate, a heat exchange core body, a top plate and a connecting block. By respectively snap-connecting the top plate and the bottom plate on the upper and lower sides of the heat exchange core body, a connecting block is installed on the outside of the top plate. The connecting block slides on the outside of the fixed column, and the fixed columns are equidistantly arranged on the upper inner side of the side plate. In addition, a convex block is arranged below the connecting block, and the convex block is snap-connected with the convex groove formed on the upper side of the side plate. Secondly, a rotating shaft is rotatably connected to the inner side of the connecting block, and the rotating shaft is fixedly connected to the top plate. When individual damage occurs to the heat exchange core body, the first bolts fixing the first fixing block and the second fixing block above the top plate can be loosened first, and then hold the handle formed on the inner side of the top plate and pull the top plate and the connecting block upwards. At this time, the connecting block will slide on the outside of the fixed column, and the convex block installed below the connecting block will be separated from the convex groove, and then rotate the top plate upwards and outwards, then the upper part of the heat exchange core body will be opened, and the damaged heat exchange core body can be replaced;

[0019] 2. There are protective plates and second bolts. By symmetrically installing protective plates on the left and right sides of the heat exchange core body, the protective plates and the side plates are fixed by second bolts. The setting of the protective plates can prevent the heat exchange core body from being scratched by external factors;

[0020] 3. A first filter screen is provided. By opening holes inside the protective plate and installing the first filter screen inside the holes, when the heat exchanger is operating, it will generate a certain amount of heat. If the heat exchange core body is placed in an enclosed space, it will cause the heat generated during the operation of the heat exchanger to not be discharged quickly. That is, by setting the first filter screen inside the protective plate, it can prevent damage to the heat exchange core body caused by external factors and will not hinder the heat dissipation of the heat exchange core body.

[0021] 4. A second filter screen is provided. By setting the second filter screen inside the corner hole, the second filter screen can effectively block impurities in the liquid from flowing into the inside of the corner hole.

[0022] 5. A third fixing block, a connecting rod, a moving block and a spring are provided. Since the second filter screen is installed inside the corner hole, the upper and lower sides of the second filter screen are located inside the third fixing block and the moving block. And a connecting rod is installed on the outside of the third fixing block, and the connecting rod penetrates through the upper and lower sides inside the second filter screen. At the same time, the moving block can slide inside the corner hole. In addition, support rods are rotatably installed on the left and right sides of the outside of the connecting rod, and a spring is connected to the inside of the support rod, and the spring is connected to the connecting rod on the inside. That is, the support rod is in close contact with the outside of the moving block, and the spring provides a certain supporting force for the opening of the support rod, which can firmly fix the moving block on the outside of the second filter screen. When the second filter screen needs to be disassembled and replaced, the support rod can be pinched by hand. At this time, the spring will contract, and then the moving block can be moved out of the outside of the connecting rod. At this time, there will be a gap between the connecting rod and the moving block, and the second filter screen can be taken out from the gap. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a perspective structural view of the present utility model;

[0024] Figure 2 is a disassembled perspective structural view of the present utility model;

[0025] Figure 3 is a perspective structural view of the connection of the corner hole, the second filter screen and the third fixing block of the present utility model;

[0026] Figure 4 is a perspective structural view of the connection of the side plate, the convex block and the convex groove of the present utility model;

[0027] Figure 5 is a perspective structural view of the connection of the protective plate, the first filter screen and the second bolt of the present utility model;

[0028] Figure 6 is a perspective schematic view of the connection of the handle, the first fixing block and the second fixing block of the present utility model.

[0029] In the figure: 1, bottom plate; 2, heat exchange core body; 3, top plate; 4, connecting block; 5, rotating shaft; 6, fixed column; 7, side plate; 8, convex block; 9, convex groove; 10, handle; 11, first fixing block; 12, second fixing block; 13, first bolt; 14, protection plate; 15, first filter screen; 16, second bolt; 17, support rod; 18, corner hole; 19, second filter screen; 20, third fixing block; 21, connecting rod; 22, moving block; 23, spring. Specific embodiments

[0030] 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. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0031] Please refer to Figures 1 - 6 , the present invention provides a technical solution:

[0032] Embodiment 1: To solve the problems existing in the prior art, the present embodiment adopts the following technical solution. A corrosion-resistant plate heat exchanger with an externally extractable heat exchange core is provided with a bottom plate 1, and a heat exchange core body 2 is snap-connected above the bottom plate 1; a heat exchange core externally extractable mechanism is arranged on the upper side of the heat exchange core body 2, which can quickly extract and replace a single damaged heat exchange core body 2, greatly improving the efficiency of replacing the heat exchange core body 2; a protection mechanism is arranged on the left and right sides of the heat exchange core body 2 to protect the heat exchange core body 2 and effectively avoid the heat exchange core body 2 from being scratched; a clogging prevention mechanism is arranged inside the corner hole 18, which can filter the liquid entering the inside of the corner hole 18 and effectively separate the impurities in the liquid, so that the inside of the corner hole 18 will not be blocked. First, a top plate 3 and a bottom plate 1 are respectively snap-connected to the upper and lower sides of the heat exchange core body 2. When a single heat exchange core body 2 is damaged, first unscrew the first bolt 13 that fixes the first fixing block 11 and the second fixing block 12, and then hold the handle 10 arranged inside the top plate 3. Since a connecting block 4 is installed on the outside of the top plate 3, and a convex block 8 is installed below the connecting block 4, and the convex block 8 is snap-connected to the convex groove 9 opened inside the upper part of the side plate 7, that is, by holding the handle 10, the top plate 3 can be moved upward, the connecting block 4 will slide upward on the outside of the fixed column 6, and the convex block 8 and the convex groove 9 will be separated. At the same time, a rotating shaft 5 is rotatably arranged inside the connecting block 4, and the rotating shaft 5 is fixedly connected to the top plate 3, so that the top plate 3 can be rotated, and the top plate 3 is rotated upward and outward, that is, the upper part of the heat exchange core body 2 is opened, which is convenient for replacing the damaged heat exchange core body 2. At the same time, side plates 7 are installed on the front and rear sides of the heat exchange core body 2, and protection plates 14 are fixedly installed on the left and right sides of the side plates 7 by second bolts 16. The protection plates 14 can protect the heat exchange core body 2. In addition, a first filter screen 15 is installed inside the protection plates 14. The setting of the first filter screen 15 can facilitate the normal heat dissipation of the heat exchange core body 2 during operation. Secondly, third fixing blocks 20 are fixedly installed on the upper and lower sides inside the corner hole 18, and a connecting rod 21 is arranged on the outside of the third fixing blocks 20. That is, the second filter screen 19 is placed inside the third fixing blocks 20 and the moving blocks 22, the connecting rod 21 is inserted into the upper and lower sides of the second filter screen 19, and then the moving blocks 22 are slid into contact with the support rods 17 symmetrically arranged on the left and right sides of the outside of the connecting rod 21. Since a spring 23 is installed inside the support rods 17, and the inside of the spring 23 is connected to the connecting rod 21, that is, when the moving blocks 22 slide into contact with the support rods 17, the spring 23 will contract, causing the support rods 17 to move inward. After the moving blocks 22 pass through the support rods 17, the spring 23 will rebound, and the support rods 17 will rotate outward to fit with the moving blocks 22 to limit the moving blocks 22. That is, the second filter screen 19 is detachably installed inside the corner hole 18, which can filter the impurities in the liquid that needs to flow through, effectively avoiding the blockage of the corner hole 18.

[0033] In the existing plate heat exchanger, when the heat exchange core is damaged, it needs to be moved one by one for replacement, and it cannot be replaced quickly. As shown in Figure 2 , Figure 4 and Figure 5 , the heat exchange core external extraction mechanism includes a top plate 3 snap-fitted above the heat exchange core body 2 and a bottom plate 1 snap-fitted below the heat exchange core body 2. A connecting block 4 is installed outside the top plate 3. The connecting block 4 slides on the outside of the fixed column 6, and the fixed columns 6 are equidistantly arranged on the upper inner side of the side plate 7. In addition, a convex block 8 is arranged below the connecting block 4, and the convex block 8 is snap-fitted with the convex groove 9 opened on the upper side of the side plate 7. Secondly, a rotating shaft 5 is rotatably connected to the inside of the connecting block 4, and the rotating shaft 5 is fixedly connected to the top plate 3. When an individual heat exchange core body 2 is damaged, first loosen the first bolt 13 that fixes the first fixing block 11 and the second fixing block 12 above the top plate 3, and then hold the handle 10 opened on the inside of the top plate 3 and pull the top plate 3 and the connecting block 4 upward. At this time, the connecting block 4 will slide on the outside of the fixed column 6, and the convex block 8 installed below the connecting block 4 will be separated from the convex groove 9. Then rotate the top plate 3 upward and outward, and then the upper part of the heat exchange core body 2 will be opened, and the damaged heat exchange core body 2 can be replaced.

[0034] Example 2: In the existing plate heat exchanger, the internal heat exchange core is exposed to the air for a long time and has no protection mechanism, so it is very easy to be scratched by external factors. As shown in Figure 1 , Figure 2 and Figure 4 , the protection mechanism includes protection plates 14 arranged on the left and right sides of the heat exchange core body 2. The protection plates 14 and the side plates 7 are fixed by the second bolts 16. The arrangement of the protection plates 14 can prevent the heat exchange core body 2 from being scratched by external factors. At the same time, holes are opened inside the protection plates 14, and a first filter screen 15 is installed inside the holes. When the heat exchanger is operating, certain heat will be dissipated from the first filter screen 15.

[0035] Example 3: In the existing plate heat exchanger, the set angle holes 18 allow two heat-transferring liquids to pass through. Generally, there will be certain impurities in the liquids. The long-term flow of the liquids in the angle holes 18 will cause the angle holes 18 to become blocked. As shown in Figure 2 , Figure 3 and Figure 6As shown in the figure, the anti-blocking mechanism includes a second filter screen 19 arranged inside the corner hole 18. The second filter screen 19 can effectively prevent impurities in the liquid from flowing into the inside of the corner hole 18. The second filter screen 19 is installed inside the corner hole 18 and is located inside the third fixing block 20 and the moving block 22. A connecting rod 21 is installed on the outside of the third fixing block 20. The connecting rod 21 penetrates through the upper and lower sides of the inside of the second filter screen 19. At the same time, the moving block 22 can slide inside the corner hole 18. In addition, support rods 17 are rotatably installed on the left and right sides of the outside of the connecting rod 21. The inner sides of the support rods 17 are connected to a spring 23. The inner side of the spring 23 is connected to the connecting rod 21, that is, the support rods 17 are closely attached to the outside of the moving block 22. The spring 23 provides a certain supporting force for the opening of the support rods 17, and can firmly fix the moving block 22 on the outside of the second filter screen 19. When the second filter screen 19 needs to be disassembled and replaced, the support rods 17 can be pinched by hand. At this time, the spring 23 will contract. Then, the moving block 22 is moved out of the outside of the connecting rod 21. At this time, there will be a gap between the connecting rod 21 and the moving block 22, and the second filter screen 19 can be taken out from the gap.

[0036] The content not described in detail in this specification belongs to the prior art well-known to those skilled in the art. The standard parts used in the present invention can all be purchased from the market. The special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part all adopt conventional means such as bolts, rivets, and welding that are mature in the prior art. The machines, parts, and equipment all adopt conventional models in the prior art. Coupled with the circuit connection adopting the conventional connection method in the prior art, it will not be elaborated here.

[0037] Although the present invention has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions described in the foregoing embodiments, or perform equivalent replacements for some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A corrosion-resistant plate heat exchanger with an externally extractable heat exchange core, comprising: A bottom plate (1), above which a heat exchange core body (2) is snap-fitted and installed; It is characterized in that it further comprises: Above the heat exchange core body (2), there is a heat exchange core externally extractable mechanism, where the heat exchange core externally extractable mechanism includes a top plate (3), a connecting block (4), a rotating shaft (5), a fixed column (6), a convex block (8), a convex groove (9), a handle (10), a first fixing block (11), a second fixing block (12) and a first bolt (13). On the front and rear sides above the heat exchange core body (2), the top plates (3) are symmetrically snap-fitted and connected. On the outer side of the top plate (3), the connecting block (4) is rotatably connected, and on the inner side of the connecting block (4), the rotating shaft (5) is rotatably connected. Moreover, the rotating shaft (5) is fixedly connected to the top plate (3); An angle hole (18), inside which there is a clogging prevention mechanism. The clogging prevention mechanism includes a second filter screen (19), a third fixing block (20), a connecting rod (21), a moving block (22), a spring (23) and a support rod (17). Inside the angle hole (18), the third fixing blocks (20) are symmetrically and fixedly installed up and down. On the outer side of the third fixing block (20), the connecting rod (21) is installed, and the connecting rod (21) penetrates through the upper and lower sides inside the second filter screen (19). Moreover, the second filter screen (19) is arranged inside the angle hole (18).

2. The corrosion-resistant plate heat exchanger with an externally extractable heat exchange core according to claim 1, wherein: Inside the connecting block (4), the fixed column (6) is slidably installed. The fixed columns (6) are fixedly installed at equal intervals inside the upper part of the side plate (7), and the side plates (7) are symmetrically arranged in front and rear on the outer side of the heat exchange core body (2).

3. The corrosion-resistant plate heat exchanger with an externally extractable heat exchange core according to claim 2, wherein: Below the connecting block (4), the convex block (8) is installed, and the convex block (8) is snap-fitted and connected with the convex groove (9). The convex groove (9) is arranged inside the upper part of the side plate (7).

4. A corrosion-resistant plate heat exchanger with an externally extractable heat exchange core according to claim 1, characterized in that: Inside the top plate (3), the handles (10) are symmetrically arranged left and right. Above the left side of the top plate (3), the second fixing block (12) is installed. Above the right side of the top plate (3), the first fixing block (11) is installed. Moreover, the first fixing block (11) and the second fixing block (12) are fixed by the first bolt (13).

5. The corrosion-resistant plate heat exchanger with an externally extractable heat exchange core according to claim 2, characterized in that: On the left and right sides of the heat exchange core body (2), the protective plates (14) are symmetrically arranged. Inside the protective plate (14), the first filter screen (15) is arranged. Moreover, the protective plate (14) and the side plate (7) are fixed by the second bolt (16).

6. The corrosion-resistant plate heat exchanger with an externally extractable heat exchange core according to claim 2, wherein: Inside the side plate (7), the angle hole (18) is opened.

7. The corrosion-resistant plate heat exchanger with an externally extractable heat exchange core according to claim 1, characterized in that: Outside the connecting rod (21), the moving block (22) is arranged, and the moving block (22) is slidably connected with the angle hole (18). On the outer side of the moving block (22), the support rod (17) is closely attached.

8. The corrosion-resistant plate heat exchanger with an externally extractable heat exchange core according to claim 7, characterized in that: Inside the support rod (17), the spring (23) is fixedly connected, and inside the spring (23), the connecting rod (21) is fixedly connected.

Images