Plate heat exchanger convenient to construct and using method

Abstract

The invention discloses a plate heat exchanger convenient to construct and a using method, and relates to the technical field of heat exchangers. The upper guide rod and the lower guide rod are connected between the upper guide rod and the lower guide rod; the movable pressing plate slides along the upper guide rod and the lower guide rod; the pressing push rod is in threaded connection with the stand column and used for driving the movable pressing plate to press a plate sheet set arranged between the movable pressing plate and the fixed plate, and the height-adjustable lateral clamping mechanism is further included. The lateral clamping mechanism is designed to be a whole capable of sliding in the guide groove, the whole lateral clamping mechanism can be moved to the non-working position of the bottom of the heat exchanger during maintenance, the taking-out path of the plate sheet set is eliminated, an operator can take out the plate sheet set rapidly and completely for cleaning or replacing without disassembling any clamping screw rod or pressing push rod, and the working efficiency is improved. The maintenance process is simplified, and the downtime of equipment is shortened.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of heat exchangers, and particularly relates to a plate heat exchanger facilitating construction and a use method. BACKGROUND

[0002] As a kind of efficient and compact heat exchange equipment, the core technology of the plate heat exchanger lies in using a series of metal thin plates pressed into a specific corrugated shape as heat transfer elements. These plates are assembled in an alternating manner, and the plates are isolated from each other by precisely designed sealing gaskets, thereby forming two independent and interlaced fluid channels. During operation, cold and hot fluids flow in opposite directions or cross each other in these narrow channels, and the heat exchange is carried out through the high-thermal-conductivity plate walls. The entire plate set is firmly clamped between a thick stationary compression plate and a movable active compression plate, and is positioned and guided by two parallel guide rods. Finally, a set of clamping screw systems penetrating the active compression plate applies a large pre-tightening force to ensure that the sealing gaskets between all the plates can maintain reliable sealing performance under the action of internal fluid pressure, preventing medium leakage. With the advantages of high heat transfer efficiency, compact structure, easy adjustment of heat exchange area, and easy cleaning, the plate heat exchanger has been widely used in many fields of modern industry such as petroleum chemical industry, food and medicine, heating ventilation and air conditioning, power, metallurgy, etc., and is an indispensable key process equipment.

[0003] However, although the plate heat exchanger performs well in heat transfer performance, it has an inherent defect in structural design, especially in the maintenance and repair process. When the equipment needs to be internally cleaned or the plates need to be replaced due to fouling, corrosion or damage, the operator must first spend a lot of time and effort to remove the complex mechanical structure for providing lateral support and stability, which usually involves disassembling a large number of clamping rods, support rods and nuts, washers and other fasteners distributed on both sides of the plate set. These components not only have a large number and considerable weight, but also may be difficult to disassemble due to rust after long-term operation, greatly increasing the labor intensity and operation risk of workers. Only after completely removing these lateral constraints, the clamping screw of the main compression mechanism can be loosened, the heavy active compression plate can be moved backward, and then the entire plate set can be laboriously pulled out of the guide rods. This process not only has a complicated operation process and a long time-consuming, but also is prone to loss or damage of small fasteners, and the plate surface or sealing gasket may be damaged during disassembly and reassembly, affecting the sealing performance and service life of the equipment. Therefore, a plate heat exchanger facilitating construction is needed to solve the existing problems. SUMMARY

[0004] In view of the technical problem in the prior art that the traditional plate heat exchanger is extremely cumbersome and time-consuming to disassemble and maintain due to its complex lateral support structure, thereby seriously affecting the construction efficiency, the present application provides the following technical solutions: a plate heat exchanger convenient for construction and a use method.

[0005] In order to solve the above technical problems, the present application adopts the following technical solutions: A plate heat exchanger convenient for construction, comprising: Oppositely arranged fixed plates and vertical columns; Upper guide rods and lower guide rods connected between the two; Sliding movable compression plates along the upper guide rods and the lower guide rods; And compression push rods threaded with the vertical columns for driving compression plate piece groups of the movable compression plates, the plate piece groups being arranged between the movable compression plates and the fixed plates, further comprising: At least one lateral clamping mechanism with adjustable height, the lateral clamping mechanism being configured to: Be capable of exerting clamping force on the lateral edges of the plate piece groups at multiple discrete or continuous height positions; And, after releasing the clamping force on the plate piece groups, be capable of moving to a non-working position that does not interfere with the removal of the plate piece groups.

[0006] Further, the lateral clamping mechanism comprises: A pair of guide slots respectively arranged on both sides of the movable compression plates and the fixed plates and arranged in the vertical direction; Sliding blocks in sliding connection with the pair of guide slots; Clamping screws penetrating through the sliding blocks for exerting clamping force on the lateral edges of the plate piece groups; And a locking unit for locking the sliding blocks at predetermined height positions in the guide slots.

[0007] Further, the clamping screws are threaded with first and second fastening nuts, which are respectively located on both sides of the sliding blocks, for axially fixing the clamping screws relative to the sliding blocks.

[0008] Further, when it is necessary to change the overall height of the lateral clamping mechanism, the first and second fastening nuts are loosened, so that the clamping screws can axially move relative to the sliding blocks; at the same time, the locking of the sliding blocks by the locking unit is released, so that the clamping screws and the sliding blocks can slide along the guide slots together.

[0009] Furthermore, the locking unit includes a limiting bolt disposed on the side wall of the guide groove, and a control knob is fixedly connected to the end of the limiting bolt away from the guide groove. The locking unit also includes a limiting hole opened on the slider, and the end of the limiting bolt is adapted to the limiting hole to lock the height position of the slider.

[0010] Furthermore, a fastening nut is threaded onto the clamping screw, and by rotating the fastening nut, the end of the clamping screw is driven to move closer to or away from the side of the plate assembly.

[0011] Furthermore, the cross-sections of the guide groove and the slider are non-circular and mutually complementary to prevent the slider from rotating within the guide groove.

[0012] Furthermore, the number of lateral clamping mechanisms is three, and they are spaced apart along the height direction of the plate group.

[0013] Furthermore, the non-working position is when the lateral clamping mechanism moves to the bottom area of ​​the movable clamping plate and the fixed plate.

[0014] Furthermore, the present invention also claims protection for a method of using a plate heat exchanger, including using any of the above-mentioned easy-to-construct plate heat exchangers, and further including the following steps: S1. Lock the sliders of the three lateral clamping mechanisms at a suitable height position using the locking unit; S2. Rotate the two fastening nuts on the clamping screw to fix the clamping screw on the slider. By rotating the clamping screw, make its two ends press against the side of the plate assembly. S3. Push the clamping screw to drive the slider to slide down along the guide groove until it moves to the bottom area of ​​the movable clamping plate and the fixed plate, i.e., the non-working position; S4. The operator can rotate the clamping push rod in the opposite direction to move the movable clamping plate backward, release the axial pressure on the plate group, and then remove the entire plate group from the upper and lower guide rods.

[0015] Compared with existing technologies, the beneficial effects of this solution are: 1. This invention eliminates the removal path of the plate assembly by designing the lateral clamping mechanism as an integral part that can slide within the guide groove and can be moved to the bottom of the heat exchanger in a non-working position during maintenance. This allows operators to quickly and completely remove the plate assembly for cleaning or replacement without disassembling any clamping screws or pressing push rods, simplifying the maintenance process and shortening equipment downtime. 2. This invention achieves rapid locking and releasing between the clamping screw and the slider by setting two adjustable fastening nuts on the clamping screw. The operator only needs to turn the nuts to control the fixed state of the clamping screw. This design makes the application and release of lateral clamping force very convenient, while ensuring the structural stability and reliability in the clamping state. 3. By setting a locking unit consisting of a limiting bolt and a limiting hole on the slider and guide groove, the present invention provides a precise and stable height positioning function for the lateral clamping mechanism, ensuring that the clamping force can be accurately applied to the key positions required by the plate group, effectively preventing the plates from misaligning or deforming under operating pressure, thereby ensuring the sealing performance and long-term stable operation of the heat exchanger. Attached Figure Description

[0016] Figure 1 This is a three-dimensional structural diagram of the present invention; Figure 2 This is a schematic diagram of the structure of the present invention from another perspective; Figure 3 This is a schematic diagram of the plate assembly and its connectors of the present invention; Figure 4 This is a schematic diagram of the movable clamping plate and its connecting parts of the present invention; Figure 5 for Figure 4 Enlarged view of point A in the image.

[0017] The reference numerals in the attached diagram are as follows: 1. Fixed plate; 2. Column; 3. Upper guide rod; 4. Lower guide rod; 5. Movable clamping plate; 6. Clamping push rod; 7. Plate assembly; 8. Guide groove; 9. Slider; 10. Clamping screw; 11. Limit bolt; 12. Control knob; 13. Limit hole; 14. First fastening nut; 15. Second fastening nut. Detailed Implementation

[0018] The present invention will now be described in further detail with reference to the accompanying drawings.

[0019] like Figures 1-4 As shown, the present invention provides a technical solution: a plate heat exchanger that is easy to construct. The main structure includes a fixed plate 1 and a column 2, which are arranged in parallel opposite directions. Between the fixed plate 1 and the column 2, there are horizontal upper guide rods 3 and lower guide rods 4. A movable clamping plate 5 is fitted onto the upper and lower guide rods 4 through through holes at its upper and lower ends and can slide freely along the axis of the guide rods. The plate assembly 7 is clamped between the upper guide rod 3 and the lower guide rod 4 and held between the fixed plate 1 and the movable clamping plate 5. In order to provide clamping force, a clamping push rod 6 is threadedly connected to the column 2, and its end abuts against the back of the movable clamping plate 5. By rotating the clamping push rod 6, the movable clamping plate 5 can be driven to move towards the fixed plate 1, thereby clamping the plate assembly 7.

[0020] This invention eliminates the removal path of the plate assembly by designing the lateral clamping mechanism as a single unit that can slide within the guide groove and move it to a non-working position at the bottom of the heat exchanger during maintenance. This allows operators to quickly and completely remove the plate assembly for cleaning or replacement without disassembling any clamping screws or pressing push rods, simplifying the maintenance process and shortening equipment downtime. like Figure 1 and Figure 2 As shown, guide grooves 8 are vertically provided on both sides of the movable clamping plate 5 and the fixed plate 1. Three lateral clamping mechanisms are installed in these guide grooves 8, which are spaced apart along the height direction of the plate group 7. Each lateral clamping mechanism consists of a slider 9, a clamping screw 10 and a locking unit.

[0021] The slider 9 is housed within the guide groove 8, and its cross-sectional shape matches that of the guide groove 8, such as being rectangular or dovetail-shaped, to prevent the slider 9 from rotating within the guide groove 8 and to ensure that it can only slide up and down along the guide groove 8. A clamping screw 10 passes horizontally through the slider 9, with its two ends facing the sides of the plate assembly 7. On the clamping screw 10, located on both sides of the slider 9, a fastening nut is threaded onto each side. When it is necessary to clamp the plate assembly 7, by rotating the first fastening nut 14 and the second fastening nut 15 (the first fastening nut 14 is close to the movable pressure plate 5, and the second fastening nut 15 is close to the fixed plate 1), its inner end face is tightly pressed against the side of the slider 9, thereby axially fixing the clamping screw 10 and the slider 9.

[0022] like Figure 1 , Figure 2 , Figure 3 , Figure 4 and Figure 5 As shown, the locking unit includes a limiting bolt 11 set on the side wall of the guide groove 8. The end of the bolt can pass through the wall of the guide groove 8 and be engaged in the preset limiting hole 13 on the slider 9. For ease of operation, a control knob 12 is fixedly connected to one end of the limiting bolt 11 outside the guide groove 8. When the height needs to be adjusted, first loosen the fastening nut, and then loosen the limiting bolt 11 so that its end is disengaged from the limiting hole 13. At this time, the slider 9 and the clamping screw 10 can slide freely up and down in the guide groove 8. After adjusting to the predetermined height, tighten the limiting bolt 11 again so that its end is engaged in the limiting hole 13, and the slider 9 can be locked at that height position.

[0023] Furthermore, the present invention also claims protection for a method of using a plate heat exchanger, including using any of the above-mentioned easy-to-construct plate heat exchangers, and further including the following steps: First, the sliders 9 of the three lateral clamping mechanisms are locked at a suitable height position by the locking unit (i.e., tightening the limit bolts 11). Then, the two fastening nuts on the clamping screw 10 are rotated to fix the clamping screw 10 on the slider 9. At this time, by rotating the clamping screw 10, its two ends are pressed against the side of the plate group 7, which can provide a reliable lateral clamping force and prevent the plates from being misaligned under working pressure. When it is necessary to disassemble the plates, the operation is extremely simple. First, loosen the two fastening nuts on the clamping screw 10 so that the clamping screw 10 and the slider 9 are no longer rigidly fixed. The clamping screw 10 becomes a free state that can move axially relative to the slider 9. Then, loosen the limit bolts 11 of the locking unit so that its end exits from the limit hole 13 and releases the height lock of the slider 9 on the guide groove 8.

[0024] After completing the above two unlocking steps, the entire lateral clamping mechanism (including slider 9 and clamping screw 10) becomes a single unit that can slide freely within the guide groove 8. The operator only needs to push the clamping screw 10 by hand to move slider 9 down along the guide groove 8 until it reaches the bottom area of ​​the movable pressure plate 5 and the fixed plate 1, i.e., the non-working position. In this position, the lateral clamping mechanism will not interfere with the removal of the plates. Subsequently, the operator can rotate the pressure push rod 6 in the opposite direction to move the movable pressure plate 5 backward, releasing the axial pressure on the plate group 7, and then easily remove the entire plate group from the upper and lower guide rods 4.

[0025] Finally, it should be noted that in the description of this invention, the terms "vertical," "upper," "lower," "horizontal," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0026] In the description of this invention, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0027] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention 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 the present invention should be included within the protection scope of the present invention.

Claims

1. A plate heat exchanger that is easy to construct, comprising: The fixed plates and columns are set opposite to each other; The upper guide rod and the lower guide rod connect the two; A movable clamping plate that slides along the upper and lower guide rods; And a pressing push rod threadedly connected to the column, used to drive the pressing plate assembly of the movable pressing plate, the plate assembly being positioned between the movable pressing plate and the fixed plate, characterized in that it further includes: At least one height-adjustable lateral clamping mechanism, said lateral clamping mechanism being configured to: It is capable of applying clamping force to the sides of the plate group at multiple discrete or continuous height positions; Furthermore, after the clamping force on the plate group is released, it can be moved to a non-working position that does not interfere with the removal of the plate group.

2. The plate heat exchanger for easy construction according to claim 1, characterized in that, The lateral clamping mechanism includes: Pairs of guide grooves are respectively opened on both sides of the movable clamping plate and the fixed plate and are arranged in the vertical direction; The slider is slidably connected to the paired guide grooves; A clamping screw passing through the slider is used to apply a clamping force to the side of the plate assembly; And a locking unit for locking the slider at a predetermined height position within the guide groove.

3. A plate heat exchanger for easy construction according to claim 2, characterized in that, The clamping screw is threaded with a first fastening nut and a second fastening nut, which are located on both sides of the slider, respectively, and are used to fix the clamping screw axially relative to the slider.

4. A plate heat exchanger for easy construction according to claim 3, characterized in that, When it is necessary to change the overall height of the lateral clamping mechanism, the first fastening nut and the second fastening nut are loosened, allowing the clamping screw to move axially relative to the slider; at the same time, the locking unit is released from locking the slider, allowing the clamping screw and the slider to slide together along the guide groove.

5. A plate heat exchanger for easy construction according to claim 2, characterized in that, The locking unit includes a limiting bolt disposed on the side wall of the guide groove, and a control knob is fixedly connected to the end of the limiting bolt away from the guide groove. The locking unit also includes a limiting hole opened on the slider, and the end of the limiting bolt is adapted to the limiting hole to lock the height position of the slider.

6. A plate heat exchanger for easy construction according to claim 5, characterized in that, A fastening nut is threaded onto the clamping screw. By rotating the fastening nut, the end of the clamping screw is driven to move closer to or away from the side of the plate assembly.

7. A plate heat exchanger for easy construction according to claim 6, characterized in that, The cross-sections of the guide groove and the slider are non-circular and designed to fit together to prevent the slider from rotating within the guide groove.

8. A plate heat exchanger for easy construction according to claim 1 or 7, characterized in that, The number of lateral clamping mechanisms is three, and they are spaced apart along the height direction of the plate group.

9. A plate heat exchanger for easy construction according to claim 8, characterized in that, The non-working position is when the lateral clamping mechanism moves to the bottom area of ​​the movable clamping plate and the fixed plate.

10. A method of using a plate heat exchanger, characterized in that, Including the use of a plate heat exchanger that is easy to construct according to any one of claims 1-9, the method further includes the following steps: S1. Lock the sliders of the three lateral clamping mechanisms at a suitable height position using the locking unit; S2. Rotate the two fastening nuts on the clamping screw to fix the clamping screw on the slider. By rotating the clamping screw, make its two ends press against the side of the plate assembly. S3. Push the clamping screw to drive the slider to slide down along the guide groove until it moves to the bottom area of ​​the movable clamping plate and the fixed plate, i.e., the non-working position; S4. The operator can rotate the clamping push rod in the opposite direction to move the movable clamping plate backward, release the axial pressure on the plate group, and then remove the entire plate group from the upper and lower guide rods.

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