Plate heat exchanger convenient for cleaning scale on plates

Abstract

The utility model discloses a plate heat exchanger convenient for cleaning scale on plates, which relates to the technical field of plate heat exchangers, and comprises a plate heat exchanger main body with a hot runner and a cold runner, and two heat source connectors respectively used for receiving and discharging heat sources are arranged on the plate heat exchanger main body. Two heat source connectors are arranged on the plate heat exchanger body and communicate with the hot runner, two cold source connectors used for receiving and discharging cold sources correspondingly are arranged on the plate heat exchanger body and communicate with the cold runner, and the two heat source connectors and / or the two cold source connectors communicate with circulating parts. Under the driving action of the water pump, the cleaning liquid can circularly flow in the hot runner and / or the cold runner, so that water scales on the plates forming the hot runner and the cold runner can be dissolved and removed, the cleaning function is realized, a plurality of plates do not need to be detached for cleaning, and the cleaning device is convenient to use.

Description

Technical Field

[0001] The utility model relates to the technical field of plate heat exchangers, in particular to a plate heat exchanger which is convenient for cleaning scale on plates. Background Art

[0002] A plate heat exchanger is a highly efficient and compact heat exchange device consisting of a series of metal plates with a specific corrugated shape to facilitate the transfer of heat energy between two fluids. Suitable for liquid-liquid and vapor-liquid heat exchange applications, this heat exchanger is widely used in various industrial processes due to its excellent heat transfer performance, small footprint, easy installation and maintenance, and long-term durability. When the plate heat exchanger is in use, the heat source flows in the hot runner between two adjacent plates, and the cold source flows between the cold runners between two adjacent plates. The heat source and the cold source can be conventional fluid media in the prior art. For example, both the heat source and the cold source can be set to water. At this time, the water in the cold runner will absorb the heat of the water in the hot runner, thereby playing a role in heat exchange.

[0003] For example, in the application scenario of lithium battery factory, plate heat exchanger is needed for heat recovery to save energy. After searching, the authorization announcement number CN116164564B discloses a plate heat exchanger with a cleaning structure, including a heat exchanger body and a base, the base is provided with a clamping device and a cleaning device, the cleaning device includes two columns arranged on the base, a cross bar arranged between the tops of the columns and a spraying platform arranged on the cross bar, and the cross bar is provided with a first driving member for driving the spraying platform to move vertically; the clamping device includes a limit rod arranged on the column and a clamping claw arranged above the base, a connecting pipe is arranged between the columns, the connecting pipe is located above the base, a longitudinal pipe is arranged in the middle of the connecting pipe, the clamping claw is connected with a movable rod, the movable rod is slidably connected to the longitudinal pipe, a transverse pipe is arranged on the column, the limit rod is slidably connected to the transverse pipe, and a second driving member for driving the movable rod and the limit rod to move is arranged on the base.

[0004] If the plate heat exchanger with the cleaning structure is applied to a lithium battery plant, and at least one of the heat source and the cold source in the plate heat exchanger is set to water. During the use of the plate heat exchanger, since water easily forms scale at high temperatures, and the scale will remain inside the plate during long-term operation, the scale will have a blocking effect on the water during the subsequent heat exchange process. When it is necessary to clean the inside and outside of the plate heat exchanger, the setting of the plate heat exchanger can only clean the outside of the plate heat exchanger by vertically moving the spray table on it, but cannot clean the inside of the plate heat exchanger. In addition, to clean the inside of the plate heat exchanger, multiple plates can only be disassembled and cleaned one by one. Due to the large number of plates, the cleaning process is more cumbersome and troublesome.

[0005] To this end, we propose a plate heat exchanger that is easy to clean plate scale to solve the problem of difficulty in quickly cleaning the inside of the plate heat exchanger. Utility Model Content

[0006] The purpose of the utility model is to solve the problems in the prior art and to propose a plate heat exchanger that is easy to clean scale on the plates, which can realize the active circulation of cleaning liquid in the hot runner and / or cold runner, thereby quickly and efficiently removing scale in the hot runner and / or cold runner.

[0007] In order to solve the above problems, the utility model provides the following technical solutions:

[0008] A plate heat exchanger that is easy to clean scale on plates, including a plate heat exchanger body with a hot runner and a cold runner, the plate heat exchanger body is provided with two heat source connectors for receiving and discharging a heat source, respectively, and the two heat source connectors are both connected to the hot runner, the plate heat exchanger body is provided with two cold source connectors for receiving and discharging a cold source, respectively, and the two cold source connectors are both connected to the cold runner, a circulation component is connected between the two heat source connectors and / or between the two cold source connectors, and the circulation component includes a vertical pipe constituting a connecting waterway and a water pump arranged on the vertical pipe.

[0009] As a further solution of the utility model: the two heat source connectors and the two cold source connectors are arranged in sequence along the vertical direction, and drainage ports are provided at the bottom of the heat source connector and the cold source connector located at the bottom.

[0010] As a further solution of the utility model: the liquid discharge port is connected to a filter box with a filter screen inside, and an outlet is opened at the bottom of the filter box, and a first sealing cover is detachably installed at the outlet.

[0011] As a further solution of the utility model: a liquid inlet is arranged on the top of the heat source connector and the cold source connector, and a second sealing cover is detachably mounted on the liquid inlet.

[0012] As a further solution of the utility model: both ends of the vertical pipe are provided with a first valve.

[0013] As a further solution of the utility model: a second valve is provided at the external inlet and the external outlet of the two heat source connectors and the two cold source connectors.

[0014] As a further solution of the utility model: it also includes a regulating member for adjusting the pressure between adjacent plates constituting the hot runner and the cold runner.

[0015] As a further solution of the utility model: the plate heat exchanger body includes plates and clamps for clamping the plates, the clamps are recessed with grooves for the ends of the threaded rods to be inserted into, and nuts are respectively provided at both ends of the threaded rods to form a tension bolt-type adjustment member for tightening the clamps and clamping the plates.

[0016] Compared with the prior art, the utility model has the following beneficial effects:

[0017] 1. Through the setting of a circulation part, and the circulation part includes a vertical pipe and a water pump arranged on the vertical pipe, when cleaning, first inject a cleaning liquid into the hot runner and / or the cold runner, and the cleaning liquid can be water or other specific liquids; then, under the driving action of the water pump, the cleaning liquid can circulate in the hot runner and / or the cold runner, and then the scale on the plates constituting the hot runner and the cold runner will be dissolved and removed, that is, the cleaning function is achieved; compared with the prior art, the utility model does not need to disassemble multiple plates for cleaning. On the premise of ensuring the integrity of the body, the cleaning work can be completed by only using the water pump to drive the cleaning liquid to circulate, which is easy to use.

[0018] 2. When friction particles are added to the cleaning liquid, when the cleaning liquid is driven by the water pump to circulate and complete the cleaning work, the filter screen can block the friction particles and temporarily store them in the filter box during the process of discharging the cleaning liquid from the hot runner and the cold runner. The filter box can be removed later to collect the friction particles. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The utility model is further described below in conjunction with the accompanying drawings.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the cross-sectional structure of the filter box and the filter screen in the utility model.

[0022] In the figure: 1. Plate heat exchanger body; 2. Heat source connector; 3. Cold source connector; 4. Circulation part; 401. Vertical pipe; 402. Water pump; 5. Filter; 6. Filter box; 7. First cover; 8. Second cover; 9. First valve; 10. Second valve; 11. Threaded rod; 12. Nut. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0024] like Figure 1-Figure 2 As shown, a plate heat exchanger that is convenient for cleaning plate scale includes a plate heat exchanger body 1 having a hot runner and a cold runner, the plate heat exchanger body 1 is provided with two heat source connectors 2 for receiving and discharging heat sources, and the two heat source connectors 2 are connected to the hot runners, and the two heat source connectors 2 are arranged in a vertical direction; the plate heat exchanger body 1 is provided with two cold source connectors 3 for receiving and discharging cold sources, and the two cold source connectors 3 are connected to the cold runners, and the two cold source connectors 3 are arranged in a vertical direction, and a circulation part 4 is connected between the two heat source connectors 2 and between the two cold source connectors 3. The heat source connector 2 and the cold source connector 3 located above are connected to each other with a liquid inlet at the top, and the heat source connector 2 and the cold source connector 3 located below are both provided with a liquid discharge port.

[0025] In order to fully describe the present invention, the plate heat exchanger body 1 in the present invention uses water as a heat source and a cold source, and after long-term use, scale will be generated in the plates inside the hot runner and the cold runner. Therefore, the following embodiments are described in the case where the circulation parts 4 are provided on both the two heat source connectors 2 and the two cold source connectors 3.

[0026] After the plate heat exchanger body 1 has been used for a long time, when the hot runner and the cold runner on it need to be cleaned, the two heat source connectors 2 and the two cold source connectors 3 can be sealed first, and then the cleaning liquid can be transported to the hot runner and the cold runner through the liquid inlet, and then the circulation parts 4 on the hot runner and the cold runner can be used to circulate the cleaning liquid in the hot runner and the cold runner. During the flow of the cleaning liquid, the scale on the plates constituting the hot runner and the cold runner can be dissolved to achieve the cleaning function. After the cleaning is completed, the drain port can be opened to discharge the cleaning liquid and the dissolved scale; in order to avoid residual cleaning liquid in the hot runner and the cold runner, etc., clean water can be injected into the hot runner and the cold runner again for cleaning after the cleaning liquid is discharged.

[0027] In order to seal the liquid inlet after the liquid addition is completed, a second sealing cover 8 can be detachably installed on the liquid inlet; at the same time, in order to seal the liquid discharge port after the liquid discharge is completed, a first sealing cover 7 can be detachably installed on the liquid discharge port.

[0028] Regarding the arrangement of the above-mentioned circulation member 4, the circulation member 4 includes a vertical pipe 401 and a water pump 402 arranged on the vertical pipe 401, and the two ends of the vertical pipe 401 are respectively connected to the two heat source connectors 2 or the two cold source connectors 3. When the water pump 402 is started, the blades inside the water pump 402 can drive the cleaning liquid to circulate in the hot runner or the cold runner, and the working time of the water pump 402 can be controlled manually or by timing.

[0029] Furthermore, first valves 9 are provided at both ends of the vertical pipe 401. When the plate heat exchanger body 1 performs normal heat exchange, the first valve 9 can be closed so that the heat source or cold source will not flow into the vertical pipe 401, ensuring that the heat source or cold source will only flow inside the hot runner or cold runner. At the same time, second valves 10 are provided on the two heat source connectors 2 and the two cold source connectors 3. When cleaning the hot runner and cold runner on the plate heat exchanger body 1, the second valve 10 can be closed so that the cleaning liquid will not overflow from the heat source connector 2 or the cold source connector 3, ensuring that the cleaning liquid will only flow inside the vertical pipe 401, the hot runner and the cold runner.

[0030] In order to improve the dissolving effect of scale during the flow of cleaning liquid, friction particles, such as quartz sand, can also be added to the cleaning liquid; in the process of quartz sand driven by the cleaning liquid to flow, the quartz sand rubs against the scale on the plates of the hot runner and the cold runner, and the cleaning liquid softens the scale, so that the scale falls off quickly and dissolves into the cleaning liquid.

[0031] like Figure 2As shown, in order to collect the friction particles after cleaning, a filter box 6 with a filter screen 5 inside is connected to the drain port, and an outlet is opened at the bottom of the filter box 6. Under this arrangement, the first cover 7 is adaptively detachably installed at the outlet. When cleaning is completed, the first cover 7 can be unscrewed, and the filter screen 5 can block the friction particles during the process of discharging the cleaning liquid mixed with scale from the drain port. The friction particles can be collected by removing the filter box 6 later.

[0032] like Figure 1 As shown, further, this embodiment also includes an adjusting member for adjusting the pressure between adjacent plates constituting the hot runner and the cold runner. Specifically, the adjusting member includes a threaded rod 11 arranged on the clamping plates on both sides of the plate heat exchanger body 1, and nuts 12 threadedly sleeved on the threaded rod 11 are arranged on both outer sides of the clamping plates. By driving any nut 12 to rotate, the distance between the two clamping plates can be changed, thereby achieving the adjustment of the pressure between adjacent plates of the hot runner and the cold runner. It should be noted that this embodiment is not limited to setting the threaded rod 11 and the nut 12 to adjust the pressure between adjacent plates, and conventional technical means in the prior art can also be used to replace them, as long as the adjusting member set can achieve the corresponding adjustment function.

[0033] The above is a detailed description of an embodiment of the utility model, but the content is only a preferred embodiment of the utility model and cannot be considered to limit the scope of implementation of the utility model. All equivalent changes and improvements made within the scope of application of the utility model should still fall within the scope of the patent coverage of the utility model.

Claims

1. A plate heat exchanger that is easy to clean plate scale, characterized in that: The invention comprises a plate heat exchanger body (1) having a hot runner and a cold runner, wherein the plate heat exchanger body (1) is provided with two heat source connectors (2) for receiving and discharging a heat source respectively, and the two heat source connectors (2) are both connected to the hot runner, and the plate heat exchanger body (1) is provided with two cold source connectors (3) for receiving and discharging a cold source respectively, and the two cold source connectors (3) are both connected to the cold runner, and a circulation component (4) is connected between the two heat source connectors (2) and / or between the two cold source connectors (3), and the circulation component (4) comprises a vertical pipe (401) constituting a connecting waterway and a water pump (402) arranged on the vertical pipe (401).

2. A plate heat exchanger that is easy to clean plate scale according to claim 1, characterized in that: The two heat source connectors (2) and the two cold source connectors (3) are respectively arranged in sequence along the vertical direction, and the bottoms of the heat source connector (2) and the cold source connector (3) located at the bottom are both provided with drainage ports.

3. A plate heat exchanger that is easy to clean plate scale according to claim 2, characterized in that: The liquid discharge port is connected to a filter box (6) having a filter screen (5) inside, and an outlet is provided at the bottom of the filter box (6). A first sealing cover (7) is detachably installed at the outlet.

4. A plate heat exchanger that is easy to clean plate scale according to claim 3, characterized in that: The tops of the heat source connector (2) and the cold source connector (3) located above are both provided with liquid inlets, and second sealing covers (8) are detachably mounted on the liquid inlets.

5. A plate heat exchanger that is easy to clean plate scale according to any one of claims 1 to 4, characterized in that: Both ends of the vertical pipe (401) are provided with a first valve (9).

6. A plate heat exchanger that is easy to clean plate scale according to any one of claims 1 to 4, characterized in that: Second valves (10) are provided at the external inlets and external outlets of the two heat source connectors (2) and the two cold source connectors (3).

7. A plate heat exchanger that is easy to clean plate scale according to claim 6, characterized in that: The invention also comprises a regulating member for regulating the pressure between adjacent plates constituting the hot runner and the cold runner.

8. A plate heat exchanger that is easy to clean plate scale according to claim 7, characterized in that: The plate heat exchanger body (1) comprises a plate and a clamping plate for clamping the plate, the clamping plate is provided with a recessed groove for the end of the threaded rod (11) to be clamped, and nuts (12) are respectively provided at both ends of the threaded rod (11), thereby forming a tension bolt-type adjustment member for tightening the clamping plate and clamping the plate.

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