A chemical descaling and cleaning device for heat exchangers

Abstract

This utility model discloses a chemical descaling and cleaning device for heat exchangers, relating to the technical field of cleaning devices. It includes a horizontal plate with multiple sets of supporting vertical plates welded to its front surface. A cleaning frame is hinged to the top of each set of supporting vertical plates via hinge shafts. A locking assembly is installed at the lower end of the outer walls of the cleaning frame. A cleaning rack is welded to the rear surface of the horizontal plate. Multiple sets of movable strip holes are opened in the middle of the upper surface of the cleaning rack. Multiple sets of electrically driven sliding assemblies are symmetrically installed on the upper surface of the cleaning rack, and brushing components penetrating the movable strip holes are installed on these assemblies. In use, the locking assemblies at the symmetrical positions clamp and fix the heat exchange plates. Then, an appropriate amount of dilute hydrochloric acid or other acid solution is poured into the inner cavity of the cleaning frame through the opening on the upper surface of the cleaning frame, allowing the dilute hydrochloric acid to contact the scale on the surface of the heat exchange plates for an appropriate time, thereby achieving chemical descaling.

Description

Technical Field

[0001] This utility model relates to the technical field of cleaning devices, and in particular to a chemical descaling and cleaning device for heat exchangers. Background Technology

[0002] The plate heat exchanger contains plate assemblies, which are made up of multiple stacked metal plates. Fluid channels are formed between the plates through sealing gaskets. This is the core component of the plate heat exchanger.

[0003] After prolonged use, scale tends to accumulate on the heat exchange plates inside plate heat exchangers, affecting heat exchange efficiency. To address this issue, this invention proposes a chemical descaling and cleaning device for heat exchangers that differs from existing technologies. Utility Model Content

[0004] To address the problem mentioned above where scale easily accumulates on heat exchange plates, affecting heat exchange efficiency, this invention provides a chemical descaling and cleaning device for heat exchangers.

[0005] This utility model provides a chemical descaling and cleaning device for heat exchangers, which adopts the following technical solution:

[0006] A chemical descaling and cleaning device for heat exchangers includes a horizontal plate. Multiple sets of supporting vertical plates are welded to the front side of the upper surface of the horizontal plate. A cleaning frame is hinged to the top of the multiple sets of supporting vertical plates via hinge shafts. A locking assembly is installed at the lower end of the outer walls of the cleaning frame. A cleaning rack is welded to the rear side of the upper surface of the horizontal plate. Multiple sets of movable strip holes are opened in the middle of the upper surface of the cleaning rack. Multiple sets of electric sliding assemblies are symmetrically installed on the upper surface of the cleaning rack. Brushing components that penetrate the movable strip holes are installed on the multiple sets of electric sliding assemblies.

[0007] By adopting the above technical solution, the disassembled heat exchanger plates are placed parallel to each other in the inner cavity of the cleaning frame. After the heat exchanger plates are placed, the clamping components at symmetrical positions are activated to hold and fix the heat exchanger plates. Then, an appropriate amount of dilute hydrochloric acid or other acid solution is poured into the inner cavity of the cleaning frame through the opening on the upper surface of the cleaning frame, so that the dilute hydrochloric acid can contact the scale on the surface of the heat exchanger plates for an appropriate time, thereby achieving chemical descaling. During the descaling process, the electric sliding component and the brushing component are activated to brush the scale on the upper surface of the heat exchanger plates, thereby improving the effect and efficiency of scale removal.

[0008] Optionally, the positioning assembly includes a first cylinder, which is fixed to the outer wall of the cleaning frame, and the end of the output shaft of the first cylinder extends into the inner cavity of the cleaning frame and is fixed with a clamping plate.

[0009] By adopting the above technical solution, the first cylinder at the symmetrical position is activated to extend and drive the clamping plate to move horizontally, thereby clamping and fixing the heat exchange plate at the four sides of the heat exchange plate.

[0010] Optionally, the electric sliding assembly includes an electric slide rail, which is fixed to the upper surface of the cleaning rack. An electric slider is installed inside the electric slide rail, and multiple sets of the electric slide rails are electrically connected to a PLC controller in the prior art.

[0011] Optionally, the brushing assembly includes a cylinder frame, which is fixed at the end of the electric slider. A third cylinder is installed in the inner cavity of the cylinder frame, and the output shaft end of the third cylinder passes through the cylinder frame and the movable strip hole and is fixed with a brush.

[0012] By adopting the above technical solution, the third cylinder is activated to extend and drive the brush to move downward and contact the upper surface of the heat exchange plate. Then, multiple sets of electric slide rails are activated simultaneously to drive the electric slider, cylinder frame, third cylinder and brush to move synchronously to facilitate the cleaning of scale on the upper surface of the heat exchange plate, thereby improving the effect and efficiency of scale removal.

[0013] Optionally, multiple sets of round rods are uniformly welded to the bottom of the inner cavity of the cleaning frame.

[0014] By adopting the above technical solution, the heat exchange plate is stably placed flat on the upper surface of multiple round rods, so that there is a gap between the bottom of the heat exchange plate and the bottom of the inner cavity of the cleaning frame, which allows the heat exchange plate to fully contact the dilute hydrochloric acid.

[0015] Optionally, vertical drain pipes are installed at both ends of the bottom wall of the cleaning frame.

[0016] Optionally, a second cylinder is symmetrically installed at both ends of the upper surface of the transverse plate, and a support roller is installed at the end of the output shaft of the two sets of second cylinders. The upper surface of the two sets of support rollers is in contact with the bottom wall of the cleaning frame.

[0017] By adopting the above technical solution, the two sets of second cylinders are activated to extend and retract in an alternating manner, which allows the cleaning frame to rotate and tilt at the top of the supporting vertical plate via the hinge shaft. Opening the control valve on the vertical drain pipe allows the waste liquid and scale residue inside the cleaning frame to be discharged through the vertical drain pipe.

[0018] Optionally, inclined plates are welded to both ends of the front outer wall of the cleaning rack, and the tops of the two sets of inclined plates are welded to each other at the upper surface of the inner cavity of the cleaning rack.

[0019] By adopting the above technical solution, the support stability of the cleaning rack can be increased under the action of multiple sets of inclined plates.

[0020] In summary, this utility model has at least one of the following beneficial effects:

[0021] Pour an appropriate amount of dilute hydrochloric acid or other acidic solution into the inner cavity of the cleaning frame through the opening on the upper surface of the cleaning frame, so that the dilute hydrochloric acid can contact the scale on the surface of the heat exchange plate for an appropriate time, thereby achieving chemical descaling.

[0022] The third cylinder is activated to extend and move the brush downwards to contact the upper surface of the heat exchange plate. Then, using existing PLC or other electronic control units, multiple sets of electric slide rails are activated simultaneously to move the electric sliders horizontally. Under the action of multiple sets of electric sliders, the cylinder frame, the third cylinder, and the brush can move synchronously to facilitate the cleaning of scale on the upper surface of the heat exchange plate, thereby improving the effect and efficiency of scale removal. Attached Figure Description

[0023] Figure 1 This is a frontal sectional view of the present invention.

[0024] Figure 2 This is a schematic diagram of the right-side cross-sectional structure of this utility model.

[0025] In the diagram: 1. Brush; 2. Inclined plate; 3. Clamping plate; 4. First cylinder; 5. Vertical drain pipe; 6. Support roller; 7. Supporting vertical plate; 8. Second cylinder; 9. Horizontal plate; 10. Round rod; 11. Cleaning frame; 12. Cleaning rack; 13. Electric slide rail; 14. Third cylinder; 15. Cylinder frame; 16. Moving strip hole; 17. Electric slider. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-2 The present invention will be described in further detail below.

[0027] Please refer to the attached diagram in the instruction manual. Figure 1 and 2 This utility model provides an embodiment of a chemical descaling and cleaning device for heat exchangers, comprising a horizontal plate 9. Multiple sets of supporting vertical plates 7 are welded to the front side of the upper surface of the horizontal plate 9. A cleaning frame 11 is hinged to the top of each set of supporting vertical plates 7 via a hinge shaft. The upper surface of the cleaning frame 11 is open, and multiple sets of round rods 10 are uniformly welded to the bottom of the inner cavity of the cleaning frame 11. The disassembled heat exchanger plates are placed parallel to each other in the inner cavity of the cleaning frame 11. Then, an appropriate amount of dilute hydrochloric acid or other acid solution is poured into the inner cavity of the cleaning frame 11 through the opening on the upper surface of the cleaning frame 11, allowing the dilute hydrochloric acid to contact the scale on the surface of the heat exchanger plates for an appropriate time, thereby achieving chemical descaling.

[0028] Please refer to the attached diagram in the instruction manual. Figure 1 and 2A locking assembly is installed at the lower end of the outer walls of the cleaning frame 11. The locking assembly includes a first cylinder 4, which is fixed to the outer wall of the cleaning frame 11. The end of the output shaft of the first cylinder 4 extends into the inner cavity of the cleaning frame 11 and is fixed with a locking plate 3. When the first cylinder 4 is activated at a symmetrical position, it extends and drives the locking plate 3 to move horizontally, thereby clamping and fixing the heat exchanger on the sides of the heat exchanger.

[0029] Please refer to the attached diagram in the instruction manual. Figure 1 and 2 A cleaning rack 12 is welded to the rear side of the upper surface of the horizontal plate 9. There is an appropriate gap between the side wall of the cleaning rack 12 and the outer wall of the cleaning frame 11. Multiple sets of movable strip holes 16 are opened at the middle position of the upper surface of the cleaning rack 12. Multiple sets of electric sliding components are symmetrically installed on the upper surface of the cleaning rack 12. The electric sliding components include electric slide rails 13. The electric slide rails 13 are fixed on the upper surface of the cleaning rack 12. Electric sliders 17 are installed inside the electric slide rails 13.

[0030] Please refer to the attached diagram in the instruction manual. Figure 1 and 2 Multiple sets of electric slide rails 13 are electrically connected to existing PLC controllers. Multiple sets of electric sliders 17 are equipped with brushing components. The brushing components include cylinder frames 15, which are fixed at the end of the electric sliders 17. A third cylinder 14 is installed in the inner cavity of the cylinder frame 15. The end of the output shaft of the third cylinder 14 passes through the cylinder frame 15 and the movable strip hole 16 and is fixed with a brush 1.

[0031] The third cylinder 14 is activated to extend and move the brush 1 downwards to contact the upper surface of the heat exchange plate. Then, using existing PLC or other electronic control units, multiple sets of electric slide rails 13 are activated simultaneously to move the electric sliders 17 horizontally. Under the action of multiple sets of electric sliders 17, the cylinder frame 15, the third cylinder 14 and the brush 1 can move synchronously to facilitate the cleaning of scale on the upper surface of the heat exchange plate, thereby improving the effect and efficiency of scale removal.

[0032] Please refer to the attached diagram in the instruction manual. Figure 1 and 2 Vertical drain pipes 5 are installed at both ends of the bottom wall of the cleaning frame 11. Second cylinders 8 are symmetrically installed at both ends of the upper surface of the horizontal plate 9. Support rollers 6 are installed at the ends of the output shafts of the two sets of second cylinders 8. The upper surfaces of the two sets of support rollers 6 are in contact with the bottom wall of the cleaning frame 11. The two sets of second cylinders 8 and support rollers 6 are all located between the vertical drain pipes 5 and the supporting vertical plate 7.

[0033] Activating the two sets of second cylinders 8 allows the cleaning frame 11 to rotate and tilt at the top of the supporting vertical plate 7 via the hinge shaft. Opening the control valve on the vertical drain pipe 5 allows the waste liquid and scale residue inside the cleaning frame 11 to be discharged through the vertical drain pipe 5.

[0034] Please refer to the attached diagram in the instruction manual. Figure 1 and 2 Both ends of the front outer wall of the cleaning frame 12 are inclinedly welded with inclined plates 2. The tops of the two sets of inclined plates 2 are welded to the upper surface of the inner cavity of the cleaning frame 12. The two sets of inclined plates 2 are located on the outer side of the cleaning frame 11. The support stability of the cleaning frame 12 can be increased by the action of multiple sets of inclined plates 2.

[0035] Working principle: When using the chemical descaling and cleaning device for this heat exchanger, the disassembled heat exchange plates are first placed parallel to each other in the inner cavity of the cleaning frame 11, ensuring that the heat exchange plates are stably and flatly placed on the upper surface of the multiple round rods 10, with a gap between the bottom of the heat exchange plates and the bottom of the inner cavity of the cleaning frame 11. After the heat exchange plates are placed, the first cylinder 4 at the symmetrical position is activated to extend and drive the clamping plate 3 to move horizontally, thereby clamping and fixing the heat exchange plates around the sides. Then, an appropriate amount of dilute hydrochloric acid or other acid solution is poured into the inner cavity of the cleaning frame 11 through the opening on the upper surface of the cleaning frame 11, allowing the dilute hydrochloric acid to contact the scale on the surface of the heat exchange plates for an appropriate time, thereby achieving chemical descaling.

[0036] During the descaling process, the third cylinder 14 is first activated to extend and move the brush 1 downwards to contact the upper surface of the heat exchange plate. Then, using existing PLC and other electronic control units, multiple sets of electric slide rails 13 are activated simultaneously to move the electric sliders 17 horizontally. Under the action of multiple sets of electric sliders 17, the cylinder frame 15, the third cylinder 14 and the brush 1 can move synchronously to facilitate brushing the scale on the upper surface of the heat exchange plate, thereby improving the effect and efficiency of scale removal.

[0037] After the heat exchanger has been used with the chemical descaling and cleaning device for a period of time, the scale that is washed off will automatically accumulate at the bottom of the inner cavity of the cleaning frame 11. Then, the two sets of second cylinders 8 are activated to extend and retract in an alternating manner, so that the cleaning frame 11 can rotate and tilt at the top of the support vertical plate 7 through the hinge shaft. Opening the control valve on the vertical drain pipe 5 allows the waste liquid and scale residue in the inner cavity of the cleaning frame 11 to be discharged through the vertical drain pipe 5. The third cylinder 14 can be moved smoothly horizontally under the action of the moving strip hole 16. The support stability of the cleaning frame 12 can be increased under the action of multiple sets of inclined plates 2.

[0038] All standard parts used in this utility model document can be purchased from the market. Each component in this utility model document can be customized according to the description and drawings. The specific connection methods of each component adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. In addition, the circuit connection adopts conventional connection methods in the prior art, and will not be described in detail here.

[0039] The above are all preferred embodiments of this utility model, and are not intended to limit the scope of protection of this utility model. Therefore, all equivalent changes made to the structure, shape and principle of this utility model should be covered within the scope of protection of this utility model.

Claims

1. A chemical cleaning device for heat exchangers comprising a transverse plate (9), characterized in that: Multiple sets of supporting vertical plates (7) are welded to the front side of the upper surface of the horizontal plate (9). The top of the multiple sets of supporting vertical plates (7) is hinged to a cleaning frame (11) through a hinge shaft. The lower end of the outer wall of the cleaning frame (11) is equipped with a locking component. A cleaning rack (12) is welded to the rear side of the upper surface of the horizontal plate (9). Multiple sets of movable strip holes (16) are opened in the middle of the upper surface of the cleaning rack (12). Multiple sets of electric sliding components are symmetrically installed on the upper surface of the cleaning rack (12). A brushing component that penetrates the movable strip hole (16) is installed on the multiple sets of electric sliding components.

2. A chemical cleaning device for heat exchangers according to claim 1, characterized in that: The positioning assembly includes a first cylinder (4), which is fixed on the outer wall of the cleaning frame (11). The end of the output shaft of the first cylinder (4) extends into the inner cavity of the cleaning frame (11) and is fixed with a clamping plate (3).

3. A chemical cleaning device for heat exchanger according to claim 1, characterized in that: The electric sliding assembly includes an electric slide rail (13), which is fixed to the upper surface of the cleaning rack (12). An electric slider (17) is installed inside the electric slide rail (13). Multiple sets of the electric slide rails (13) are electrically connected to a PLC controller of the prior art.

4. A chemical cleaning device for heat exchangers according to claim 3, characterized in that: The brushing assembly includes a cylinder frame (15), which is fixed at the end of the electric slider (17). A third cylinder (14) is installed in the inner cavity of the cylinder frame (15). The output shaft end of the third cylinder (14) passes through the cylinder frame (15) and the movable strip hole (16) and is fixed with a brush (1).

5. The chemical descaling and cleaning device for heat exchangers according to claim 1, characterized in that: Multiple sets of round rods (10) are uniformly welded to the bottom of the inner cavity of the cleaning frame (11).

6. The chemical descaling and cleaning device for heat exchangers according to claim 1, characterized in that: Vertical drain pipes (5) are installed at both ends of the bottom wall of the cleaning frame (11).

7. The chemical descaling and cleaning device for heat exchangers according to claim 1, characterized in that: The two ends of the upper surface of the transverse plate (9) are symmetrically equipped with second cylinders (8), and the ends of the output shafts of the two sets of second cylinders (8) are equipped with support rollers (6). The upper surfaces of the two sets of support rollers (6) are in contact with the bottom wall of the cleaning frame (11).

8. The chemical descaling and cleaning device for heat exchangers according to claim 1, characterized in that: Both ends of the front outer wall of the cleaning rack (12) are inclined plates (2), and the tops of the two sets of inclined plates (2) are welded to each other at the upper surface of the inner cavity of the cleaning rack (12).

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