CN115682822A

CN115682822A - Geothermal system with scale treatment device

Info

Publication number: CN115682822A
Application number: CN202211611593.6A
Authority: CN
Inventors: 刘咏明; 计孝飞; 陈光林
Original assignee: Shandong Geo Mineral Engineering Group Co ltd
Current assignee: Shandong Geo Mineral Engineering Group Co ltd
Priority date: 2022-12-15
Filing date: 2022-12-15
Publication date: 2023-02-03
Anticipated expiration: 2042-12-15
Also published as: CN115682822B

Abstract

The invention provides a geothermal system with a scale treatment device, which comprises a descaling device for descaling the inside of a geothermal pipeline, a water separator, a water collector, a sewage tank for collecting and treating sewage and a plurality of geothermal pipelines, wherein the plurality of geothermal pipelines are connected between the water separator and the water collector, the descaling device comprises a cleaning agent tank, a booster tank, a liquid outlet pipe, a second hose and a plurality of first connecting pipes, each geothermal pipeline is connected with an elastic adding pipe, the second hose is respectively and movably connected with the plurality of elastic adding pipes, cleaning bullets for scraping the scale and elastic adding structures for adding the cleaning bullets are arranged in the elastic adding pipes, the elastic adding structures are arranged on the elastic adding pipes, and a net basket for intercepting the cleaning bullets and an overflow structure for treating the sewage are arranged in the sewage tank. The invention can control the high-pressure cleaning agent in the booster tank to form a pulse form, push the cleaning bomb to dissolve scale along the geothermal pipeline and scrape the scale on the pipe wall, and the scale can be effectively removed by the chemical scale dissolving, high-pressure pulse and physical scraping modes.

Description

Geothermal system with scale treatment device

Technical Field

The invention relates to the technical field of geothermal fluid descaling, in particular to a geothermal system with a scale treatment device.

Background

With the rapid consumption of non-renewable resources such as coal, petroleum, natural gas and the like, geothermal energy is used as a renewable clean energy source, and the development prospect is very wide. The geothermal energy is used as energy source for various forms of industry and agriculture, such as heating, power generation, refrigeration, medical bathing, aquaculture and the like.

In the process of utilizing geothermal energy, particularly in the production process of medium-high temperature geothermal wells, scaling problems with different degrees occur on a heat exchange device, and on one hand, the scale causes the heat transfer performance of the heating surface of the heat exchange device to be poor, so that great heat transfer resistance can be increased, the heat transfer effect is influenced, and heat loss is caused; on the other hand, the scale can be attached to the equipment pipeline inner wall in a large number, can block up the pipeline when serious, threatens the safe operation of equipment, and serious industrial enterprise of scale is forced even to stop production.

In the prior art, the pipeline is generally cleaned by adding a cleaning agent into a geothermal system, but the dirt dissolving capacity of the cleaning agent used alone is limited, the reaction time is long, and the cleaning efficiency is low. Accordingly, the present invention provides a geothermal system having a scale treatment apparatus.

Disclosure of Invention

Technical problem to be solved

Aiming at the defects of the prior art, the invention provides a geothermal system with a scale treatment device, which solves the problems that in the prior art, a pipeline is generally cleaned by adding a cleaning agent in the geothermal system, but the scale dissolving capacity of the cleaning agent used alone is limited, the reaction time is long and the cleaning efficiency is low.

(II) technical scheme

In order to achieve the purpose, the invention is realized by the following technical scheme:

a geothermal system with a scale treatment device comprises a descaling device for descaling the inside of a geothermal pipeline, a water distributor, a water collector, a sewage tank for collecting and treating sewage and a plurality of geothermal pipelines, wherein the inlet end of the water distributor is provided with a hot water inlet, the outlet end of the water collector is provided with a hot water return port, the number of the interfaces of the water distributor and the water collector is the same as that of the geothermal pipelines, the interface of each water distributor is connected with a second control valve, one end of each second control valve, which is far away from the water distributor, is connected with a first tee joint, the interface of each water collector is connected with a fourth control valve, one end of each fourth control valve, which is far away from the water collector, is connected with a second tee joint, the plurality of geothermal pipelines are communicated through the first tee joints and the second tee joints which correspond to one another, and observation structures for observing the structural conditions of the pipelines are arranged between the second control valves and the water distributor and between the fourth control valves and the water collector;

the descaling device comprises a cleaning agent tank, a booster tank, a liquid outlet pipe, a second hose and a plurality of first connecting pipes, wherein the booster tank is communicated with the cleaning agent tank through a pipeline provided with a booster pump, the liquid outlet pipe is communicated with the booster tank, the number of the first connecting pipes is the same as that of geothermal pipelines, the first connecting pipes are connected to a plurality of first tee joints in a one-to-one correspondence manner, one end, away from the first tee joint, of each first connecting pipe is connected with a third control valve, one end, away from the first connecting pipe, of each third control valve is connected with an elastic adding pipe, the second hose is movably connected with a plurality of elastic adding pipes respectively, a first control valve is arranged on the second hose, cleaning balls for scraping scale and elastic adding structures for adding the cleaning balls are arranged inside the elastic adding pipes, and the elastic adding structures are arranged on the elastic adding pipes;

the sewage tank is internally provided with a net basket for intercepting cleaning bullets and an overflow structure for treating sewage, the side wall of the sewage tank is communicated with a drain pipe, the top of the sewage tank is connected with a third hose, each of the rest ports of the second tee joint is connected with a second connecting pipe, and the third hose is movably connected with a plurality of second connecting pipes respectively.

Preferably, one end of each second connecting pipe, which is far away from the second tee joint, is connected with a fifth control valve, one end of each fifth control valve, which is far away from the second connecting pipe, is connected with a third connecting pipe, and the third hose is movably connected with the third connecting pipes respectively.

Preferably, each of the ends of the spring adding pipes, which are far away from the first connecting pipe, are connected with a first quick-plugging connector, each of the ends of the third connecting pipes, which are far away from the fifth control valve, are connected with a second quick-plugging connector, the second hose is connected with the plurality of spring adding pipes through the first quick-plugging connectors, and the third hose is communicated with the plurality of third connecting pipes through the second quick-plugging connectors.

Preferably, the top of pressure boost jar is provided with the relief valve, the one end that the pressure boost jar was kept away from to the relief valve is connected with first hose, the one end that the pressure boost jar was kept away from to first hose is linked together with the cleaner jar.

Preferably, the observation structure comprises a plurality of first transparent pipes and a plurality of second transparent pipes, the first transparent pipes are fixedly connected between the corresponding second control valves and the interfaces of the water distributor in a one-to-one correspondence manner, and the second transparent pipes are fixedly connected between the corresponding fourth control valves and the interfaces of the water collector in a one-to-one correspondence manner.

Preferably, add the bullet structure and include sealed shell and retaining ring, the lateral wall that adds the bullet pipe is provided with the external screw thread, sealed shell cover is located and is added the outside wall of bullet pipe and link to each other through the external screw thread, the retaining ring sets up and is adding the bullet pipe outer wall, sealed shell and retaining ring activity are inconsistent, it adds the bullet mouth to have seted up on the pipe circumference outer wall to add, it is located sealed shell cover department to add the bullet mouth, it will add the bullet mouth and link up with the outside with the bullet intraduct, it places in adding the bullet intraductal to wash the bullet through adding the bullet mouth.

Preferably, the cleaning bomb comprises a sealing plug and a conical head which are sequentially arranged, the outer wall of the sealing plug is in sliding connection with the inner wall of the bomb tube, multiple groups of scraping rings are uniformly and fixedly connected to the outer wall of the conical head, and the diameters of the multiple groups of scraping rings are sequentially reduced from top to bottom.

Preferably, the overflow structure includes the first overflow plate of multiunit and multiunit second overflow plate, multiunit first overflow plate is fixed connection in proper order in sewage incasement bottom, multiunit the second overflow plate is fixed connection in proper order at the interior top of sewage case, and the first overflow plate of multiunit and second overflow plate set up in proper order crisscross, every group all be equipped with logical chamber between first overflow plate and the sewage incasement top and between every group second overflow plate and the sewage incasement bottom, the basket sets up at the sewage incasement lateral wall and is located third hose connection department, the basket is located between marginal first overflow plate and the sewage incasement lateral wall.

(III) advantageous effects

The invention provides a geothermal system with a scale treatment device. The method has the following beneficial effects:

1. compared with the prior art, this geothermal system with incrustation scale processing apparatus, can observe the pipeline scale deposit condition through observing the structure, during the clearance, add the cleaner that has the effect of dissolving the dirt in the cleaning machine jar, rethread booster pump cleaner pump income pressure boost jar, and form high pressure cleaner, add the washing bullet by adding the bullet mouth, high pressure cleaner forms the pulse form in the continuous on-off control pressure boost jar through first control valve, promote the washing bullet and dissolve the dirt and strike off the pipe wall scale along the geothermal pipeline, the scale can effectually be got rid of in the chemistry mode of dissolving the dirt plus high pressure pulse and physics striking off.

2. Compared with the prior art, the geothermal system with the scale treatment device recovers the cleaning bomb and the cleaning sewage containing the scale through the sewage tank, the cleaning sewage is filtered to large particles through the overflow structure, and the residual liquid is discharged from the drain pipe and then is recycled through recovery treatment.

Drawings

FIG. 1 is a schematic view of the overall structure of the present invention;

FIG. 2 is an enlarged view of a portion of the invention at A in FIG. 1;

FIG. 3 is a partial sectional view of the structure of the loading tube and loading structure of the present invention;

FIG. 4 is a schematic view of a partial structure of the elasticizing tube of the present invention;

FIG. 5 is a schematic view of the structure of the cleaning bullet of the present invention;

fig. 6 is a partial sectional view showing the inner structure of the foul water tank of the present invention.

Wherein, 1, a cleaning agent tank; 2. a booster pump; 3. a booster tank; 4. a safety valve; 5. a first hose; 6. a liquid outlet pipe; 7. a first control valve; 8. a water separator; 9. a hot water inlet; 10. a first transparent tube; 11. a second control valve; 12. a first tee joint; 13. a first connecting pipe; 14. a third control valve; 15. adding an elastic pipe; 16. sealing the shell; 17. a first quick connector; 18. a geothermal pipe; 19. a water collector; 20. returning hot water; 21. a second transparent tube; 22. a fourth control valve; 23. a second tee joint; 24. a second connection pipe; 25. a fifth control valve; 26. a third connecting pipe; 27. a second quick connector; 28. a third hose; 29. a sewage tank; 30. a drain pipe; 31. a retainer ring; 32. an external thread; 33. adding an elastic opening; 34. a sealing plug; 35. a conical head; 36. scraping rings; 37. a seal ring; 38. a basket; 39. a first overflow plate; 40. a second overflow plate; 41. a second hose.

Detailed Description

The technical solutions of the present invention will be further described in the following, with reference to the accompanying drawings and the detailed description, to clearly and completely describe the technical solutions of the present invention. It should be apparent that the described embodiments are only some embodiments of the present invention, and not all embodiments. All other embodiments, which can be obtained by a person skilled in the art without making any creative effort based on the embodiments in the present invention, belong to the protection scope of the present invention.

Example (b):

as shown in fig. 1-6, a geothermal system with a scale treatment device comprises a scale removal device for removing scale inside a geothermal pipeline 18, a water separator 8, a water collector 19, a sewage tank 29 for collecting and treating sewage, and a plurality of geothermal pipelines 18, wherein the inlet end of the water separator 8 is provided with a hot water inlet 9, the outlet end of the water collector 19 is provided with a hot water return port 20, the number of the interfaces of the water separator 8 and the water collector 19 is the same as that of the geothermal pipelines 18, the interface of each water separator 8 is connected with a second control valve 11, one end of each second control valve 11, which is far away from the water separator 8, is connected with a first tee joint 12, the interface of each water collector 19 is connected with a fourth control valve 22, one end of each fourth control valve 22, which is far away from the water collector 19, is connected with a second tee joint 23, the plurality of geothermal pipelines 18 are communicated with each other through the first tee joints 12 and the second tee joints 23 corresponding to each other, and observation structures for observing the structural conditions of the pipelines are arranged between the second control valves 11 and the water separator 8 and between the fourth control valves 22 and the water collector 19;

the descaling device comprises a cleaning agent tank 1, a booster tank 3, a liquid outlet pipe 6, a second hose 41 and a plurality of first connecting pipes 13, wherein the booster tank 3 is communicated with the cleaning agent tank 1 through a pipeline provided with a booster pump 2, the liquid outlet pipe 6 is communicated with the booster tank 3, the number of the first connecting pipes 13 is the same as that of geothermal pipelines 18, the first connecting pipes 13 are connected to a plurality of first tee joints 12 in a one-to-one correspondence manner, one end, far away from the first tee joints 12, of each first connecting pipe 13 is connected with a third control valve 14, one end, far away from the first connecting pipes 13, of each third control valve 14 is connected with an elastic adding pipe 15, the second hose 41 is movably connected with the elastic adding pipes 15 respectively, a first control valve 7 is arranged on the second hose 41, cleaning bullets for scraping scale and elastic adding structures for adding the cleaning bullets are arranged inside the elastic adding pipes 15, and the elastic structures are arranged on the elastic adding pipes 15; the booster pump 2 pumps the cleaning agent in the cleaning agent tank 1 into the booster tank 3 and increases the pressure to form a high-pressure cleaning agent.

A basket 38 for intercepting cleaning bullets and an overflow structure for treating sewage are arranged in the sewage tank 29, a drain pipe 30 is communicated with the side wall of the sewage tank 29, a third hose 28 is connected to the top of the sewage tank 29, a second connecting pipe 24 is connected to the remaining port of each second tee 23, and the third hose 28 is movably connected with the plurality of second connecting pipes 24 respectively.

One end of each second connecting pipe 24, which is far away from the second tee 23, is connected with a fifth control valve 25, one end of each fifth control valve 25, which is far away from the second connecting pipe 24, is connected with a third connecting pipe 26, and a third hose 28 is movably connected with the plurality of third connecting pipes 26 respectively.

The end, far away from the first connecting pipe 13, of each bullet adding pipe 15 is connected with a first quick-connection-plug 17, the end, far away from the fifth control valve 25, of each third connecting pipe 26 is connected with a second quick-connection-plug 27, the second hose 41 is connected with the multiple bullet adding pipes 15 through the first quick-connection-plug 17, and the third hose 28 is communicated with the multiple third connecting pipes 26 through the second quick-connection-plug 27.

The top of pressure boost jar 3 is provided with relief valve 4, and the one end that pressure boost jar 3 was kept away from to relief valve 4 is connected with first hose 5, and the one end that pressure boost jar 3 was kept away from to first hose 5 is linked together with cleaner jar 1. The safety valve 4 is used for protecting the booster tank 3, and when the pressure in the booster tank 3 is higher than a set value, the pressure is released through the safety valve 4 and the redundant cleaning agent is returned to the cleaning agent tank 1.

The observation structure comprises a plurality of first transparent pipes 10 and a plurality of second transparent pipes 21, the first transparent pipes 10 are fixedly connected between the corresponding second control valves 11 and the interfaces of the water distributor 8 in a one-to-one correspondence manner, and the second transparent pipes 21 are fixedly connected between the corresponding fourth control valves 22 and the interfaces of the water collector 19 in a one-to-one correspondence manner. The scaling condition in the pipeline can be observed in time through the first transparent pipe 10 and the second transparent pipe 21, and the scale cleaning time is convenient to select.

Add and play the structure and include sealed shell 16 and retaining ring 31, the lateral wall that adds bullet pipe 15 is provided with

external screw thread

32, 16 covers of sealed shell are located and are added the 15 lateral walls of bullet pipe and link to each other through external screw thread 32 screw thread, retaining ring 31 sets up and are adding 15 outer walls of bullet pipe, sealed shell 16 is inconsistent with retaining ring 31 activity, it adds bullet mouth 33 to have seted up on the 15 circumference outer walls of bullet pipe, it is located sealed shell 16 and covers the department to add bullet mouth 33, it will add inside and the outside of bullet pipe 15 and link up to add bullet mouth 33, the washing bullet is placed in adding bullet pipe 15 through adding bullet mouth 33. The cleaning bullet can be added by unscrewing the sealing shell 16 and sliding the sealing shell 16 up along the outer wall of the springing tube 15, exposing the springing mouth 33.

The washing bullet is including the sealing plug 34 and the conical head 35 that set gradually, sealing plug 34 outer wall with add the pipe 15 inside wall sliding connection that plays, the even fixedly connected with multiunit scraping ring 36 of conical head 35 lateral wall, the diameter from the top down of multiunit scraping ring 36 reduces in proper order. Sealing plug 34 material is silica gel, and conical head 35, scraping ring 36 material are soft polyvinyl chloride, and the sealing plug 34 of silica gel material makes can dodge through the shrink when meetting the scale deposit of harder pipe wall, avoids blockking up, can clear away harder pipe wall scale deposit through increasing the scale removal number of times.

The overflow structure comprises a plurality of groups of first overflow plates 39 and a plurality of groups of second overflow plates 40, the groups of first overflow plates 39 are sequentially and fixedly connected to the inner bottom of the sewage tank 29, the groups of second overflow plates 40 are sequentially and fixedly connected to the inner top of the sewage tank 29, the groups of first overflow plates 39 and the groups of second overflow plates 40 are sequentially and alternately arranged, a through cavity is formed between the inner tops of each group of first overflow plates 39 and the sewage tank 29 and between each group of second overflow plates 40 and the inner bottom of the sewage tank 29, the net basket 38 is arranged on the inner side wall of the sewage tank 29 and located at the joint of the third flexible pipe 28, and the net basket 38 is located between the first overflow plates 39 at the edge and the inner side wall of the sewage tank 29. The basket 38 is used to facilitate the removal of the cleaning bullet, and the cleaning liquid containing dirt after cleaning is filtered by the overflow structure, and then is discharged through the drain pipe 30 for recycling.

The working principle is as follows: through first hyaline tube 10, the inside scale deposit condition of pipeline can be timely observed to second hyaline tube 21, conveniently select the snaking opportunity, add in the cleaner jar 1 and have the cleaner that dissolves the dirty effect, booster pump 2 takes out the cleaner in the cleaner jar 1 to pressure boost jar 3 in and increases pressure, form high pressure cleaner, add bullet mouth 33 will add inside and outside link up of bomb tube 15, through unscrewing sealed shell 16 and upwards sliding sealed shell 16 along adding the outer wall of bomb tube 15, expose and add the cleaning bullet with bullet mouth 33, silica gel's sealing plug 34 makes and dodges through the shrink when meetting harder pipe wall scale deposit, avoid blockking, can clear away harder pipe wall scale deposit through increasing the scale removal number of times, the washing liquid that contains the dirt after the washing overflows the overflow structure and filters, then through the recovery processing reuse behind drain pipe 30 discharge, relief valve 4 is used for protecting pressure boost jar 3, when the pressure is higher than the setting value in pressure boost jar 3, carry out the pressure release through relief valve 4 and return unnecessary cleaner back to in jar 1.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present specification describes embodiments, not every embodiment includes only a single embodiment, and such description is for clarity purposes only, and it is to be understood that all embodiments may be combined as appropriate by one of ordinary skill in the art to form other embodiments as will be apparent to those of skill in the art from the description herein.

Claims

1. A geothermal system having a scale treatment apparatus, comprising: the system comprises a descaling device for descaling the interior of a geothermal pipeline (18), a water distributor (8), a water collector (19), a sewage tank (29) for collecting and treating sewage, and a plurality of geothermal pipelines (18), wherein a hot water inlet (9) is formed in the inlet end of the water distributor (8), a hot water return opening (20) is formed in the outlet end of the water collector (19), the number of interfaces of the water distributor (8) and the water collector (19) is the same as that of the geothermal pipelines (18), a second control valve (11) is connected to the interface of each water distributor (8), a first tee joint (12) is connected to one end, away from the water distributor (8), of each second control valve (11), a fourth control valve (22) is connected to the interface of each water collector (19), a second tee joint (23) is connected to one end, away from the water collector (19), of each fourth control valve (22), a plurality of geothermal pipelines (18) are communicated with one another through the corresponding first tee joint (12) and second tee joint (23), and a plurality of geothermal pipelines (18) are arranged between the second control valves (11) and the water distributor (8) and a structure for observing the pipes (19);

the descaling device comprises a cleaning agent tank (1), a pressurization tank (3), a liquid outlet pipe (6), a second hose (41) and a plurality of first connecting pipes (13), wherein the pressurization tank (3) is communicated with the cleaning agent tank (1) through a pipeline provided with a pressurization pump (2), the liquid outlet pipe (6) is communicated with the pressurization tank (3), the number of the first connecting pipes (13) is equal to that of geothermal pipelines (18), the first connecting pipes (13) are connected to a plurality of first tee joints (12) in a one-to-one correspondence manner, one end, far away from the first tee joints (12), of each first connecting pipe (13) is connected with a third control valve (14), one end, far away from the first connecting pipes (13), of each third control valve (14) is connected with an elastic adding pipe (15), the second hose (41) is movably connected with the plurality of elastic adding pipes (15) respectively, a first control valve (7) is arranged on the second hose (41), a cleaning elastic adding pipe (15) for scraping scale and an elastic adding and a cleaning structure for adding elastic adding is arranged on the cleaning pipe (15);

the sewage treatment device is characterized in that a basket (38) for intercepting cleaning bullets and an overflow structure for treating sewage are arranged in the sewage tank (29), the side wall of the sewage tank (29) is communicated with a drain pipe (30), the top of the sewage tank (29) is connected with a third hose (28), each residual port of the second tee joint (23) is connected with a second connecting pipe (24), and the third hose (28) is movably connected with the second connecting pipes (24).

2. A geothermal system having a scale treatment apparatus according to claim 1, wherein: each end, far away from the second tee joint (23), of the second connecting pipe (24) is connected with a fifth control valve (25), each end, far away from the second connecting pipe (24), of the fifth control valve (25) is connected with a third connecting pipe (26), and a third hose (28) is movably connected with the third connecting pipes (26) respectively.

3. A geothermal system having a scale treatment apparatus according to claim 2, wherein: each add the bullet pipe (15) and keep away from the one end of first connecting pipe (13) and all connect first quick connector (17), every third connecting pipe (26) keep away from the one end of fifth control valve (25) and all connect second quick connector (27), second hose (41) are connected with a plurality of bullet pipes (15) that add through first quick connector (17), third hose (28) are linked together through second quick connector (27) and a plurality of third connecting pipe (26).

4. A geothermal system having a scale treatment apparatus according to claim 1, wherein: the top of pressure boost jar (3) is provided with relief valve (4), the one end that pressure boost jar (3) were kept away from in relief valve (4) is connected with first hose (5), the one end that pressure boost jar (3) were kept away from in first hose (5) is linked together with cleaner jar (1).

5. A geothermal system having a scale treatment apparatus according to claim 1, wherein: the observation structure comprises a plurality of first transparent pipes (10) and a plurality of second transparent pipes (21), the first transparent pipes (10) are fixedly connected between the corresponding second control valves (11) and the interfaces of the water segregator (8) in a one-to-one correspondence mode, and the second transparent pipes (21) are fixedly connected between the corresponding fourth control valves (22) and the interfaces of the water segregator (19) in a one-to-one correspondence mode.

6. A geothermal system having a scale treatment apparatus according to any one of claims 1 to 5, wherein: add bullet structure and include seal shell (16) and retaining ring (31), the lateral wall that adds bullet pipe (15) is provided with external screw thread (32), seal shell (16) cover is located and is added bullet pipe (15) lateral wall and link to each other through external screw thread (32) screw thread, retaining ring (31) set up and adding bullet pipe (15) outer wall, seal shell (16) and retaining ring (31) activity are inconsistent, add and seted up on bullet pipe (15) circumference outer wall and add bullet mouth (33), it is located seal shell (16) cover department to add bullet mouth (33), it will link up with the outside with bullet pipe (15) inside to add bullet mouth (33), the washing bullet is placed in adding bullet pipe (15) through adding bullet mouth (33).

7. A geothermal system having a scale treatment apparatus according to claim 6, wherein: the cleaning bullet comprises a sealing plug (34) and a conical head (35) which are sequentially arranged, the outer wall of the sealing plug (34) is connected with the inner side wall of the bullet adding pipe (15) in a sliding mode, a plurality of groups of scraping rings (36) are fixedly connected to the outer side wall of the conical head (35) uniformly, and the diameters of the scraping rings (36) are sequentially reduced from top to bottom.

8. The geothermal system having a scale treatment apparatus according to claim 1, wherein: the overflow structure comprises a plurality of groups of first overflow plates (39) and a plurality of groups of second overflow plates (40), wherein the plurality of groups of first overflow plates (39) are sequentially and fixedly connected at the inner bottom of the sewage tank (29), the plurality of groups of second overflow plates (40) are sequentially and fixedly connected at the inner top of the sewage tank (29), the plurality of groups of first overflow plates (39) and the second overflow plates (40) are sequentially and alternately arranged, and each group of first overflow plates (39) and the sewage tank (29) is sequentially and alternately arranged between the inner tops of the first overflow plates (39) and the sewage tank (29) and between the inner bottom of each group of second overflow plates (40) and the sewage tank (29), a through cavity is formed in each of the baskets (38), the baskets (38) are arranged at the inner side wall of the sewage tank (29) and are positioned at the joint of the third hose (28), and the baskets (38) are positioned between the first overflow plates (39) at the edge and the inner side wall of the sewage tank (29).