A peripheral frame for plate heat exchangers and a method of using the same

Abstract

The application discloses a peripheral frame for a plate heat exchanger and a use method thereof, relates to the technical field of heat exchangers, and comprises front and rear end plates, the front and rear end plates are connected through a guide rod group, a plurality of plate pieces are assembled between the front and rear end plates, a plurality of bolt rods are arranged on the periphery of the front and rear end plates, the guide rod group comprises two parallel upper guide rods and lower guide rods, the upper and lower guide rods are connected through a support column, and a cleaning assembly is mounted on the surface of the upper guide rod; the technical requirement is that the cleaning assembly is designed on the upper guide rod, the operation of driving each insert piece downward is completed by using a driving cylinder, the user can select the number of insert pieces according to the number of plate pieces, the separation of adjacent plate pieces can be completed in the process that the insert piece moves downward, then the separation of adjacent plate pieces is promoted by using a plurality of nozzles, and the cleanness of each plate piece is ensured, so that the problem that the plate pieces of a traditional heat exchanger are not easy to clean is solved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of heat exchangers, in particular to a peripheral frame for a plate heat exchanger and a method for using the same. BACKGROUND

[0002] A heat exchanger is a device that transfers part of the heat of a hot fluid to a cold fluid, also known as a heat exchanger; heat exchangers play an important role in chemical industry, petroleum industry, power industry, food industry and many other industrial production, and in chemical production, heat exchangers can be used as heaters, coolers, condensers, evaporators and reboilers, etc., and are widely used, for example, low-temperature polytetrafluoroethylene heat exchangers for power plants are new devices and equipment for waste heat recovery to reduce flue gas temperature. The use of fluoroplastic heat exchangers can prevent acid corrosion and reduce the flue gas temperature to below 100 degrees. Various types of domestic heat exchangers have been put into actual production and application and have achieved good results. Heat exchangers are often used in industrial production of petroleum, chemical industry, light industry, pharmaceutical industry, energy industry, etc. to heat low-temperature fluids or cool high-temperature fluids, vaporize liquids into steam or condense steam into liquids. Heat exchangers can be a single unit device, such as a heater, a cooler and a condenser, etc. or a component part of a certain process equipment, such as the heat exchanger in the ammonia synthesis tower. Heat exchangers are important unit devices in chemical production. According to statistics, the tonnage of heat exchangers accounts for about 20% of the entire process equipment, and in some cases, it can be as high as 30%, which shows its importance.

[0003] A plate heat exchanger is a new type of high-efficiency heat exchanger made of a series of metal sheets with a certain corrugated shape. Thin rectangular channels are formed between various plates for heat exchange through the plates. The plate heat exchanger is an ideal device for liquid-liquid and liquid-vapor heat exchange, which has the characteristics of high heat exchange efficiency, small heat loss, compact and light structure, small occupied area, easy installation and cleaning, wide application, long service life, etc. Under the same pressure loss condition, the heat transfer coefficient is 3-5 times higher than that of a tube heat exchanger, the occupied area is one-third of that of a tube heat exchanger, and the heat recovery rate can be as high as 90% or more.

[0004] The complete equipment of plate heat exchanger is composed of plate heat exchanger, balance tank, centrifugal sanitary pump, hot water device (including steam pipeline and hot water injector), support and instrument box, which is used for sterilization and cooling of milk or other heat-sensitive liquid. The material to be treated enters the balance tank first, is sent into the heat exchanger by the centrifugal sanitary pump, and passes through the preheating, sterilization, heat preservation and cooling sections. The material that fails to reach the sterilization temperature is reversed by the instrument-controlled pneumatic reflux valve and returned to the balance tank for reprocessing. The sterilization temperature of the material is automatically controlled and continuously recorded by the instrument control box, so as to monitor and check the sterilization process. The equipment is suitable for pre-sterilization and pasteurization of milk. The types of plate heat exchanger mainly include frame type (detachable type) and brazing type, and the types of plate mainly include herringbone corrugated plate, horizontal flat corrugated plate and nodule plate.

[0005] However, during the implementation of the above technical solutions, at least the following technical problems are found:

[0006] The conventional plate heat exchanger is equipped with a protective peripheral frame on the outside. The conventional peripheral frame has a single function and can only play a guiding and limiting role. A plurality of bolt rods are assembled on the peripheral frame. However, the use of the bolt rods needs to ensure the stability of the positions of the bolt rods. After the stability operation, it cannot be ensured that the bolt rods can be quickly and efficiently removed. In addition, when the plates in the heat exchanger need to be cleaned, an external cleaning nozzle needs to be used. Before this, tools need to be used to manually separate the plates, and then the cleaning operation can be performed. The operation is time-consuming and laborious and inconvenient to use. SUMMARY

[0007] Technical problems solved:

[0008] In view of the deficiencies of the prior art, the present application provides a peripheral frame for a plate heat exchanger and a use method thereof. The peripheral frame with a cleaning assembly is designed. The driving cylinder drives the insertion pieces to move up and down, which can separate the adjacent plates. The nozzle on the plate can clean the surface of the plate, which saves time and labor and is convenient to operate.

[0009] Technical scheme:

[0010] To achieve the above object, the present application is implemented by the following technical scheme:

[0011] A peripheral frame for a plate heat exchanger, comprising a front end plate and a rear end plate, and the front and rear end plates are connected by a guide rod group, and a plurality of plates are assembled between the front and rear end plates, a plurality of bolt rods are arranged on the periphery of the front and rear end plates, the guide rod group comprises two parallel upper guide rods and lower guide rods, and the upper and lower guide rods are connected by a support,

[0012] The surface of the upper guide rod is provided with a cleaning assembly, and the cleaning assembly comprises a plurality of inserts and a driving cylinder, the driving cylinder is installed on the surface of the upper guide rod, is used for driving the plurality of inserts to move vertically downward, and enters the area between two adjacent groups of plates, the surface of the insert is provided with a plurality of spray heads, and the spray heads are connected with an external water source.

[0013] In a possible implementation, the output end of the driving cylinder and each insert are connected through a transmission member, and the transmission member comprises a main shaft rod and a plurality of transmission rod barrels; the output end of the driving cylinder is fixedly connected with the main shaft rod; and each transmission rod barrel is used for connecting the corresponding insert and the main shaft rod.

[0014] In a possible implementation, the upper guide rod is provided with a plurality of frame-shaped grooves on both sides, each frame-shaped groove is used for allowing a corresponding transmission rod barrel to pass through, and the main shaft rod is always located in the inner cavity of the upper guide rod.

[0015] In a possible implementation, on the same water surface, each insert is distributed in parallel at equal intervals, the bottom side of the insert is provided with an inclined surface, and each spray head located on the same group of inserts is assembled around the inclined surface.

[0016] In a possible implementation, the top of the upper guide rod is provided with a liquid inlet pipe, the water outlet of the liquid inlet pipe sequentially passes through the main shaft rod, the transmission rod barrel and the inner cavity of the insert, and is connected with each spray head in communication, the water inlet of the liquid inlet pipe is connected with an external water pump, and the water pump is arranged in a water source.

[0017] In a possible implementation, the front end plate and the rear end plate are of the same specification, and the outer sides of the front end plate and the rear end plate are provided with a plurality of assembly openings for allowing corresponding bolt rods to be arranged therein.

[0018] In a possible implementation, the two sides of the front end plate and the rear end plate are rotatably provided with movable plates, and the movable plates are provided with a plurality of inserts, the inserts are used for closing corresponding assembly openings, and the inserts are abutted against the surfaces of the corresponding bolt rods.

[0019] In a possible implementation, the surface of the bolt rod is spirally provided with a nut, the nut is located on one side of the rear end plate and is tightly attached to the surface of the rear end plate, the surface of the bolt rod is provided with a tooth groove at a position corresponding to each assembly opening on the surface of the front end plate and the rear end plate, and the insert is engaged with the surface of the tooth groove.

[0020] A use method of a peripheral frame of a plate heat exchanger, and the use method of the peripheral frame of the plate heat exchanger comprises the following specific steps:

[0021] S1, the support is arranged between the upper and lower guide rods, the front end plate, a plurality of plates and the rear end plate are sequentially arranged on the slide rail strip at the bottom end of the upper guide rod, and the lower guide rod is assembled in the same way and is distributed in an upper and lower corresponding mode with the upper guide rod;

[0022] S2, a plurality of bolt rods are assembled in the corresponding assembly port, and corresponding nuts are screwed, so that each bolt rod is located between the front and rear end plates, the movable plate is turned over, each insertion strip on the movable plate is inserted into the corresponding assembly port, and the corresponding tooth groove on the bolt rod is abutted;

[0023] S3, after the assembly of the peripheral frame is completed, when the area between adjacent plates needs to be cleaned, the user can control the driving cylinder to drive each insertion piece to move downward, after the separation of each plate is completed, the external water pump is opened, so that the cleaning water is sprayed out through each nozzle on the insertion piece, and the area between each plate is cleaned.

[0024] Advantages:

[0025] First, in the scheme, the movable plate is designed on the side of the end plate, the insertion strip on the movable plate is used to be embedded in the corresponding assembly port, the tooth opening on the insertion strip is engaged with the tooth groove on the bolt rod, so that the position of each bolt rod is stable, the use length of the entire bolt rod can be adjusted, the assembly flexibility of the entire peripheral frame is embodied, and the problem of low overall disassembly and assembly efficiency of the traditional peripheral frame is solved.

[0026] Second, in the scheme, the cleaning assembly is designed on the upper guide rod, the driving cylinder is used to complete the downward driving operation of each insertion piece, the user can select the number of insertion pieces according to the number of plates, the separation of adjacent plates can be completed in the process that the insertion pieces move downward, and then a plurality of nozzles can promote the separation of adjacent plates and ensure the cleanliness of each plate, so that the problem that the plates of the traditional heat exchanger are not easy to clean is solved. BRIEF DESCRIPTION OF DRAWINGS

[0027] The above description is only a summary of the technical scheme of the application, in order to more clearly understand the technical means of the application, and the content of the specification can be implemented, the following preferred embodiments of the application are described in detail with reference to the drawings.

[0028] Figure 1 It is a schematic diagram of the overall structure of the application;

[0029] Figure 2 It is a schematic diagram of the local structure in the disassembled state of the application;

[0030] Figure 3 It is a schematic diagram of the cleaning assembly of the application after assembly is completed;

[0031] Figure 4This is a schematic diagram of the overall structure of the cleaning component of the present invention;

[0032] Figure 5 This is a schematic diagram of the insert structure of the present invention;

[0033] Figure 6 For the present invention Figure 2 Enlarged view of local structure A.

[0034] Legend: 1. Front end plate; 2. Rear end plate; 3. Upper guide rod; 4. Lower guide rod; 5. Support column; 6. Bolt rod; 7. Movable plate; 8. Drive cylinder; 9. Insert strip; 10. Liquid inlet pipe; 11. Slide rail; 12. Frame groove; 13. Insert plate; 131. Nozzle; 14. Transmission rod cylinder; 15. Main shaft; 16. Gear groove; 17. Assembly port; 18. Nut. Detailed Implementation

[0035] This application provides an external frame for a plate heat exchanger and its usage method. By designing an external frame with cleaning components, the separation of adjacent plates can be completed by using a drive cylinder to move each plate up and down. At the same time, the nozzles on the plates can clean the surface of the plates, which is time-saving, labor-saving and easy to operate.

[0036] The technical solution in this application embodiment is to solve the problems mentioned in the background art, and the overall idea is as follows:

[0037] Example 1:

[0038] This embodiment describes a specific structure of a cleaning component in the outer frame of a plate heat exchanger, such as... Figures 1-6 As shown, the system includes a front end plate 1 and a rear end plate 2, which are connected by a guide rod assembly. The guide rods are arranged in parallel, and several plates (not shown in the figure) are assembled between the front and rear end plates. Several bolt rods 6 are arranged around the front and rear end plates. The guide rod assembly includes two parallel upper guide rods 3 and lower guide rods 4, which are connected by a support column 5. A cleaning component is installed on the surface of the upper guide rod 3. The cleaning component is used to clean the plates and includes several inserts 13 and a drive cylinder 8. The drive cylinder 8 is installed on the surface of the upper guide rod 3 and is used to drive the inserts 13 to move vertically downward and enter the area between two adjacent sets of plates. Several nozzles 131 are arranged on the surface of the inserts 13, and the nozzles 131 are all connected to an external water source. The external water source is used to supply pressure and water to the nozzles 131.

[0039] In some examples, the output end of the driving cylinder 8 is connected with each of the inserts 13 through a transmission member, and the transmission member comprises a main shaft rod 15 and a plurality of transmission rod barrels 14; the output end of the driving cylinder 8 is fixedly connected with the main shaft rod 15; and each of the transmission rod barrels 14 is used for connecting the corresponding insert 13 and the main shaft rod 15.

[0040] With reference to Figure 3 and Figure 4 It can be seen that the number of the driving cylinder 8 is two groups, and after receiving the operation instruction, the driving cylinder 8 can synchronously complete the driving operation of the transmission member vertically upward or downward, and when the driving operation is completed, each of the inserts 13 can be moved downward and the splitting operation of the adjacent plate pieces can be completed.

[0041] In some examples, a plurality of frame-shaped grooves 12 are formed on both sides of the upper guide rod 3, each of the frame-shaped grooves 12 is used for allowing the corresponding transmission rod barrel 14 to pass through, and the main shaft rod 15 is always located in the inner cavity of the upper guide rod 3; the frame-shaped grooves 12 at this position are used for limiting each of the transmission rod barrels 14 and ensuring that each of the transmission rod barrels 14 moves vertically upward or downward.

[0042] In some examples, on the same water surface, each of the inserts 13 is distributed in parallel at equal intervals, the bottom side of the insert 13 is provided with an inclined surface, and each of the nozzles 131 located on the same group of inserts 13 is assembled around the inclined surface.

[0043] Specifically, with reference to Figure 5 It can be seen that the inclined surface on the insert 13 can be designed as Figure 5 any one of the states shown in the drawings, and is generally designed as Figure 5 the state shown on the right side in the drawings, so that the insert 13 has two inclined surfaces, thereby facilitating the splitting operation of the adjacent plate pieces.

[0044] In some examples, the top of the upper guide rod 3 is provided with a liquid inlet pipe 10, the water outlet of the liquid inlet pipe 10 sequentially passes through the main shaft rod 15, the transmission rod barrel 14 and the inner cavity of the insert 13, and is in communication with each of the nozzles 131; the water inlet of the liquid inlet pipe 10 is connected with an external water pump, and the water pump is arranged in a water source; after the water pump is turned on, the water source enters the liquid inlet pipe 10 and is sprayed from each of the nozzles 131; the spraying direction can be seen with reference to the direction shown in Figure 5 .

[0045] By using the above technical scheme:

[0046] The cleaning assembly is designed on the upper guide rod 3, the driving cylinder 8 is used to drive the insertion piece 13 downward, the user can select the number of insertion pieces 13 according to the number of plates, the adjacent plates can be separated during the downward movement of the insertion piece 13, and then the plurality of nozzles 131 can promote the separation of the adjacent plates and ensure the cleanliness of each plate, thereby solving the problem that the traditional heat exchanger plate is not easy to clean.

[0047] Embodiment 2

[0048] Based on embodiment 1, this embodiment introduces a specific structure of the movable plate in the peripheral frame of the plate heat exchanger, as shown in Figure 2 and Figure 6 The front end plate 1 and the rear end plate 2 have the same specification, and the outer side of the front end plate 1 and the rear end plate 2 is provided with a plurality of assembly openings 17 for the corresponding bolt rods 6, which can ensure the stability of the position of the bolt rod 6 after being assembled into the assembly opening 17.

[0049] In some examples, the front end plate 1 and the rear end plate 2 are rotatably assembled with the movable plate 7 on both sides, and the movable plate 7 is provided with a plurality of insertion strips 9 for closing the corresponding assembly openings 17 and abutting against the surface of the corresponding bolt rod 6.

[0050] In some examples, the surface of the bolt rod 6 is spirally assembled with a nut 18, and the nut 18 is located on one side of the rear end plate 2 and tightly abuts against the surface of the rear end plate 2. The nut 18 at this position plays an auxiliary adjusting role, specifically, rotating the nut 18 so that the nut 18 abuts against the rear end plate 2, thereby increasing the use length of the entire bolt rod 6, which can also be removed and not used; the surface of the bolt rod 6 is provided with a tooth groove 16 at a position corresponding to each assembly opening 17 on the surface of the front and rear end plates, and the insertion strip 9 is engaged with the surface of the tooth groove 16.

[0051] In a specific application scenario, the user rotates the movable plate 7 so that each insertion strip 9 is inserted into the assembly opening 17 to complete the positioning of each bolt rod 6.

[0052] By adopting the above technical scheme:

[0053] The movable plate 7 is designed on the side of the end plate, the insertion strip 9 on the movable plate 7 is embedded

[0054] with the corresponding assembly opening 17, and the tooth on the insertion strip 9 is engaged with the tooth groove 16 on the bolt rod 6, thereby ensuring the stability of the position of each bolt rod 6. The use length of the entire bolt rod 6 is adjustable, which reflects the assembly flexibility of the entire peripheral frame and solves the problem of low overall disassembly efficiency of the traditional peripheral frame.

[0055] Embodiment 3

[0056] Based on the embodiment 1, this embodiment introduces a specific use method of the peripheral frame for the plate heat exchanger, which is as follows:

[0057] S1, the support 5 is arranged between the upper and lower guide rods, the front end plate 1, the plurality of plates and the rear end plate 2 are sequentially arranged on the sliding rail strip 11 at the bottom end of the upper guide rod 3, and the lower guide rod 4 is assembled in the same way and is distributed in an upper and lower corresponding manner with the upper guide rod 3;

[0058] S2, a plurality of bolt rods 6 are assembled in the corresponding assembly port 17, and the corresponding nuts 18 are screwed, so that each bolt rod 6 is located between the front and rear end plates, the movable plate 7 is turned over, each insertion strip 9 on the movable plate 7 is inserted into the corresponding assembly port 17, and is in abutment with the corresponding tooth groove 16 on the bolt rod 6;

[0059] S3, after the assembly of the peripheral frame is completed, when the area between the adjacent plates needs to be cleaned, the user can control the driving cylinder 8 to drive each insertion piece 13 to move downward, after the separation of each plate is completed, the external water pump is opened, so that the cleaning water is sprayed through each nozzle 131 on the insertion piece 13, and the cleaning process of the area between each plate is completed.

[0060] Finally, it should be noted that: obviously, the above embodiments are only examples for clearly illustrating the present application, and are not limited to the implementation. For ordinary skilled in the art, on the basis of the above description, other different forms of changes or variations can also be made. Here, it is not necessary and impossible to enumerate all the implementation. The obvious changes or variations derived therefrom are still within the protection scope of the present application.

Claims

1. A peripheral frame for plate heat exchanger, comprising a front end plate (1) and a rear end plate (2), and the front and rear end plates are connected by setting guide rod groups, and a plurality of plates are assembled between the front and rear end plates, the periphery of the front and rear end plates is provided with a plurality of bolt rods (6), and the guide rod group comprises two parallel upper guide rods (3) and lower guide rods (4), and the upper and lower guide rods are connected by setting struts (5), characterized in that: the surface of the upper guide rod (3) is provided with a cleaning assembly, and the cleaning assembly comprises a plurality of inserts (13) and a driving cylinder (8), the driving cylinder (8) is installed on the surface of the upper guide rod (3), for driving a plurality of inserts (13) to move vertically downward, and enter the area between the adjacent two groups of plates, the surface of the insert (13) is provided with a plurality of spray heads (131), and the spray heads (131) are connected with an external water source; the output end of the driving cylinder (8) and each insert (13) are connected by setting a transmission member, and the transmission member comprises a main shaft rod (15) and a plurality of transmission rod barrels (14); wherein, the output end of the driving cylinder (8) is fixedly connected with the main shaft rod (15); a single transmission rod barrel (14) is used to connect the corresponding insert (13) and the main shaft rod (15); both sides of the upper guide rod (3) are provided with a plurality of frame grooves (12), a single frame groove (12) is used for allowing a corresponding transmission rod barrel (14) to pass through, and the main shaft rod (15) is always located in the inner cavity of the upper guide rod (3). On the same water surface, each insert (13) is parallelly distributed at equal intervals, the bottom side of the insert (13) is provided with an inclined surface, and each spray head (131) on the same group of inserts (13) is assembled around the inclined surface.

2. A peripheral frame for a plate heat exchanger according to claim 1, characterized in that: The top of the upper guide rod (3) is provided with a liquid inlet pipe (10), the water outlet of the liquid inlet pipe (10) sequentially penetrates the inner cavities of the main shaft rod (15), the transmission rod barrel (14) and the insert (13), and is connected with each spray head (131), the water inlet of the liquid inlet pipe (10) is connected with an external water pump, and the water pump is arranged in a water source.

3. A peripheral frame for a plate heat exchanger according to claim 1, characterized in that: The front end plate (1) and the rear end plate (2) are consistent in specification, and the outer sides of the front end plate (1) and the rear end plate (2) are provided with a plurality of assembly openings (17) for allowing the corresponding bolt rods (6) to be assembled.

4. A peripheral frame for a plate heat exchanger according to claim 1, characterized in that: The both sides of the front end plate (1) and the rear end plate (2) are rotatably provided with movable plates (7), and the movable plates (7) are provided with a plurality of insertion strips (9), the insertion strips (9) are used for closing the corresponding assembly openings (17) and abutting against the surfaces of the corresponding bolt rods (6).

5. A peripheral frame for a plate heat exchanger according to claim 1, characterized in that: The surface of the bolt rod (6) is spirally provided with a nut (18), and the nut (18) is located on one side of the rear end plate (2) and closely abuts against the surface of the rear end plate (2).

6. A peripheral frame for a plate heat exchanger according to claim 1, characterized in that: The surface of the bolt rod (6) is provided with a gear slot (16) at a position corresponding to each assembly opening (17) on the surface of the front and rear end plates, and the insertion strip (9) is engaged with the surface of the gear slot (16).

7. A peripheral frame for a plate heat exchanger according to claim 5, characterized in that: The use method of the peripheral frame is as follows:

8. A method of using a peripheral frame for a plate heat exchanger according to any one of claims 1-7, characterized in that: ​ S1, set up between the upper and lower guide rod support (5) connection, front end plate (1), several pieces and the rear end plate (2) in turn through the upper guide rod (3) bottom end set slide rail strip (11), and the lower guide rod (4) assembly method is same, with the upper guide rod (3) is corresponding to the upper and lower Formula distribution; S2, several bolt rod (6) assembly in the corresponding assembly port (17), and screw on the corresponding nut (18), so that each bolt rod (6) between the front and rear end plate, flip the required activity plate (7), so that each plug strip (9) on the activity plate (7) is inserted into the corresponding assembly port (17), and is in contact with the corresponding bolt rod (6) gear groove (16); S3, after the completion of the assembly of the outer frame, when the area between the adjacent pieces needs to be cleaned, the user can control the drive cylinder (8) to drive each plug (13) to move down, after the completion of the separation of each piece, by opening the external water pump, so that the cleaning water is sprayed through each nozzle (131) on the plug (13), the area between each piece is cleaned.

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