Ground cooling treatment device for drilling fluid

Abstract

The invention belongs to the technical field of drilling fluid cooling, and particularly relates to a drilling fluid ground cooling treatment device which comprises a cooling device body, the cooling device body comprises a mounting frame, and a water tank is arranged in the mounting frame; a cooling and filtering bin designed in a conical table shape is arranged in the portion, located above the water tank, of the mounting frame, a cooling fan is arranged above the cooling and filtering bin, a refrigerating set is arranged on the outer side of the cooling and filtering bin, a refrigerating unit is arranged on one side of the water tank, and a heat exchange set is arranged on one side of the upper portion of the refrigerating unit. Primary filtering equipment is arranged on one side of the liquid outlet pipe, secondary filtering equipment is arranged above the primary filtering equipment, and cleaning equipment is arranged above the secondary filtering equipment. The drilling fluid filtering and cooling device is reasonable in design and simple in structure and integrates filtering and cooling functions, cooling treatment on drilling fluid is completed while the drilling fluid is filtered, the working process is improved, and the use requirement is met.

Description

Technical Field

[0001] The invention belongs to the technical field of drilling fluid cooling, and in particular relates to a ground cooling treatment device for drilling fluid. Background Art

[0002] With the continuous development of social economy and the continuous increase in energy demand, geothermal drilling, hot dry rock drilling, ultra-deep oil drilling and scientific drilling have become the future development direction. The temperature of the formation gradually increases with the depth of drilling. Due to the large geothermal gradient or deep drilling depth, the bottom hole temperature may be higher. Under the influence of the high temperature of the formation, the temperature of the drilling fluid will increase to a certain extent after each cycle. The high temperature will cause the performance density, viscosity, permeability, and filtration loss of the drilling fluid to change, resulting in the failure of powder carrying, wall protection and lubrication functions; affecting the stability of downhole mechanical drilling tools and other guide transmission and measurement tools, making the mechanical properties of the equipment worse, the performance of the seals reduced, and the service life shortened; causing damage to ground equipment and easily causing burns to drilling fluid operators.

[0003] In the prior art, it is necessary to cool the drilling fluid, especially to cool the drilling fluid each time it is circulated, so as to control the temperature of the drilling fluid within a certain range, thereby providing important protection for safe drilling. At present, the cooling methods commonly used for high-temperature drilling fluid usually include natural cooling and forced cooling, but both have certain limitations. Among them, for the natural cooling method, its cooling efficiency and temperature will not only be affected by the ambient temperature, but also its cooling capacity is limited, and it takes a long time and cost, which cannot meet the use requirements during the drilling process. For the forced cooling method, it generally uses cooling water to cool the drilling fluid. Although the cooling effect is significantly improved, the cooling process is relatively slow. Of course, there are also cooling machines that use refrigerators to carry out cooling work, but the refrigerator's processing process for cooling the refrigerant requires a long time and cost, consumes a lot of energy, and increases the drilling fluid. The cost of cooling and cooling cannot effectively meet the use requirements. At the same time, there are impurities such as mud and sand in the output drilling fluid. The commonly used method is to cool the drilling fluid in advance and then cool it down. This increases the complexity of the processing process to a certain extent. The process is relatively cumbersome, which affects the work progress and cannot meet the use requirements. For this reason, we provide a drilling fluid ground cooling and cooling treatment device with reasonable design, simple structure, convenient processing and integration of filtering and cooling functions, that is, while filtering the drilling fluid, the drilling fluid is cooled and cooled, which reduces the complexity of the processing work, saves costs, improves the work progress, and effectively meets the production and processing needs. Summary of the invention

[0004] In view of the technical problems existing in the above-mentioned drilling fluid cooling process, the present invention proposes a drilling fluid ground cooling treatment device with reasonable design, simple structure, convenient processing and integrating filtering and cooling functions, that is, while filtering the drilling fluid, the drilling fluid is cooled and treated, thereby reducing the complexity of the processing work, saving costs, improving the work progress, and effectively meeting the production and processing needs.

[0005] In order to achieve the above-mentioned purpose, the technical solution adopted by the present invention is a ground cooling treatment device for drilling fluid, including a cooling device body, the cooling device body includes a mounting frame, a water tank is arranged in the mounting frame, a cooling filter bin with a conical table design is arranged in the mounting frame above the water tank, a heat dissipation fan is arranged above the cooling filter bin, a refrigeration group is arranged outside the cooling filter bin, a refrigeration unit is arranged on one side of the water tank, a water outlet pump is arranged on the other side of the water tank, a heat exchange group is arranged on the upper side of the refrigeration unit, a cold liquid output pipe is arranged below the refrigeration unit, and is connected to the system of the refrigeration unit. The cold input end is connected, the hot liquid output end of the refrigeration group is provided with a hot liquid output pipe, and is connected to the hot liquid input end of the heat exchange group, a water pump is provided on one side of the water tank, the water pumping end of the water pump is connected to the water tank, the water outlet end of the water pump is connected to the heat exchange input end of the heat exchange group, the cold liquid output end of the heat exchange group is connected to the top of the refrigeration unit, the hot liquid output end of the heat exchange group is connected to the top of one side of the water tank, a liquid outlet pipe and a liquid inlet pipe are respectively provided on the upper and lower sides of one side of the cooling and filtering tank, a primary filtering device is provided on one side of the liquid outlet pipe, a secondary filtering device is provided above the primary filtering device, and a cleaning device is provided above the secondary filtering device.

[0006] Preferably, the first-stage filtering equipment includes a conveying sleeve, a first-stage filtering group is arranged on one side of the conveying sleeve, the first-stage filtering group includes a filter sleeve, a holding tube arranged in a C shape is arranged in the filter sleeve, and a mud suction pipe is also arranged at the geometric center of the holding tube, which passes through the filter sleeve and rests on the inner lower end surface of the cooling filter bin.

[0007] Preferably, the secondary filtration device includes a filter plate designed in a concave shape, a first baffle plate designed in a wave-bending shape is arranged below the filter plate, a second baffle plate designed in a wave-bending shape is arranged below the first baffle plate, a first filter hole is opened in the first baffle plate, a second filter hole is opened on the second baffle plate, and the aperture of the second filter hole is larger than the aperture of the first filter hole.

[0008] Preferably, the liquid outlet pipe comprises a connecting pipe designed in a T shape, a rotating blade is arranged in the connecting pipe, and a driving rod for providing driving power to the cleaning device is arranged on one side of the rotating blade.

[0009] Preferably, the cleaning device includes a mounting seat, a running rail designed in a ring shape is provided on the mounting seat, a rotating shaft is provided at the output end of the driving rod, a shell is provided at the end of the rotating shaft, a rotating rod is provided in the shell, a roller is provided at the end of the rotating rod and corresponds to the running rail, a moving block is provided on the rotating rod located in the shell, compression springs are provided on the rotating rods located on both sides of the moving block, a connecting rod designed in an obtuse angle is provided on the moving block, and a cleaning brush is provided on the connecting rod.

[0010] Preferably, the angle between the opening direction of the container tube and the horizontal plane is 0° to 20°.

[0011] Compared with the prior art, the advantages and positive effects of the present invention are:

[0012] 1. A ground cooling treatment device for drilling fluid provided by the present invention can deliver refrigerant to the refrigeration group through the refrigeration unit, thereby creating a cooling atmosphere for the cooling filter bin, ensuring the effective implementation of the cooling work of the drilling fluid, improving the working process, and ensuring the use demand; through the water tank and heat exchange group, cooling water is used to further cool the refrigerant that has completed the refrigeration work, that is, the refrigerant circulated through the heat exchange group is output and then input into the refrigeration unit, and the time cost of processing to a lower temperature is reduced, which improves the working process and at the same time , ensuring the convenience of the device during operation and use, and meeting the use requirements; through the cleaning equipment set up, it can realize the cleaning of the warehouse during the output process of the drilling fluid to ensure the cleanliness of the device, especially to ensure the output and subsequent use of the drilling fluid, improve the work progress, and meet the use requirements; the device is reasonably designed, simple in structure, easy to process and integrates filtering and cooling functions, that is, while filtering the drilling fluid, it completes the cooling treatment of the drilling fluid, reduces the complexity of the processing work, saves costs, improves the work progress, and effectively meets the production and processing needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0014] Figure 1 It is a schematic diagram of the structure of the ground cooling treatment device for the drilling fluid;

[0015] Figure 2This is a structural front view of a surface cooling treatment device for cooling down the drilling fluid;

[0016] Figure 3 A structural side view of a surface cooling treatment device for cooling down the drilling fluid;

[0017] Figure 4 It is a schematic diagram of the internal structure of the cooling filter bin;

[0018] Figure 5 This is a front view of part of the internal structure of the cooling filter bin;

[0019] Figure 6 It is a front view of part of the internal structure of the liquid outlet pipe;

[0020] Figure 7 It is a partial structural side view of the cleaning equipment;

[0021] Figure 8 A schematic cross-sectional diagram of the internal structure of a partial structure of a cleaning device;

[0022] Fig. 9 It is a partial structural schematic diagram of the secondary filtration equipment;

[0023] Fig.10 for Figure 5 A partial enlarged schematic diagram of the structure at A in the middle;

[0024] Fig.11 It is an enlarged schematic diagram of a part of the structure of the cleaning equipment;

[0025] In the above figures, 1, mounting frame; 2, water tank; 3, cooling and filtering chamber; 4, cooling fan; 5, refrigeration group; 6, refrigeration unit; 61, cold liquid output pipe; 62, hot liquid output pipe; 7, water outlet pump; 8, heat exchange group; 9, water pump; 10, liquid outlet pipe; 101, connecting pipe; 102, rotating blade; 103, driving rod; 11, liquid inlet pipe; 12, primary filtering equipment; 121, conveying sleeve; 122, primary filtering group; 1221, filter sleeve; 1 222. Storage pipe; 1223. Mud extraction pipe; 13. Secondary filtering device; 131. Filter plate; 132. First baffle plate; 1321. First filter hole; 133. Second baffle plate; 1331. Second filter hole; 14. Cleaning device; 141. Mounting seat; 142. Running rail; 143. Rotating shaft; 144. Shell; 145. Rotating rod; 146. Roller; 147. Moving block; 148. Compression spring; 149. Connecting rod; 1410. Cleaning brush. DETAILED DESCRIPTION

[0026] In order to more clearly understand the above-mentioned purpose, features and advantages of the present invention, the present invention is further described below in conjunction with the accompanying drawings and embodiments. It should be noted that the embodiments of the present application and the features in the embodiments can be combined with each other without conflict.

[0027] In the following description, many specific details are set forth to facilitate a full understanding of the present invention. However, the present invention may also be implemented in other ways than those described herein. Therefore, the present invention is not limited to the specific embodiments of the following disclosure.

[0028] Examples, such as Figures 1 to 11As shown, a ground cooling treatment device for drilling fluid comprises a cooling device body, the cooling device body comprises a mounting frame 1, a water tank 2 is arranged in the mounting frame 1, a cooling filter chamber 3 with a conical table design is arranged in the mounting frame 1 above the water tank 2, a heat dissipation fan 4 is arranged above the cooling filter chamber 3, a refrigeration group 5 is arranged outside the cooling filter chamber 3, a refrigeration unit 6 is arranged on one side of the water tank 2, a water outlet pump 7 is arranged on the other side of the water tank 2, a heat exchange group 8 is arranged on one side above the refrigeration unit 6, a cold liquid output pipe 61 is arranged below the refrigeration unit 6, and is connected to the refrigeration input end of the refrigeration group 5, and the hot liquid output end of the refrigeration group 5 is arranged A hot liquid output pipe 62 is provided, and is connected to the hot liquid input end of the heat exchange group 8. A water pump 9 is provided on one side of the water tank 2. The water pumping end of the water pump 9 is connected to the water tank 2, and the water outlet end of the water pump 9 is connected to the heat exchange input end of the heat exchange group 8. The cold liquid output end of the heat exchange group 8 is connected to the upper part of the refrigeration unit 6. The hot liquid output end of the heat exchange group 8 is connected to the upper part of one side of the water tank 2. A liquid outlet pipe 10 and a liquid inlet pipe 11 are respectively provided on the upper and lower sides of one side of the cooling and filtering warehouse 3. The specific description is as follows: a pipeline for inputting cooling water is also provided on the water tank 2 located on the side of the water pump 9. The cooling water is transported to the heat exchange group 8 through the water pump 9, and then transported back to the water tank 2 after one cycle, and The drilling fluid is extracted by the water outlet pump 7 and applied to other processing procedures of the drilling work. For the filtering operation of the drilling fluid: first, the drilling fluid is input from the liquid inlet pipe 11 with the help of the pump body, and then the corresponding filtering work is carried out, and then the drilling fluid is discharged from the liquid outlet pipe 10 to complete the extraction of the cooled and filtered drilling fluid and apply it to the subsequent drilling work. Further, when the drilling fluid is cooled and cooled: the refrigeration unit 6 is running, and the refrigerant is transported to the refrigeration group 5 through the pipeline. With the help of the refrigeration group 5, a low-temperature environment is created for the warehouse body to ensure the effective cooling work. The refrigerated refrigerant is discharged to the heat exchange group 8, and heat is exchanged with the help of cooling water to provide a short-term solution for the subsequent The preparation of the refrigerant of the present invention provides a prerequisite; further, a primary filtering device 12 is arranged on one side of the liquid outlet pipe 10, and a secondary filtering device 13 is arranged above the primary filtering device 12. The mutual cooperation between the two sets of filtering device components can complete the full filtration of the mud and sand impurities in the drilling fluid, ensuring that the output drilling fluid can directly meet the use of drilling processing. Further, a cleaning device 14 is arranged above the secondary filtering device 13, which is operated when the drilling fluid is exported after cooling and cooling, and can effectively complete the cleaning treatment on the filter plate 131 in the bin, ensure the cleanliness of the device, reduce the difficulty of subsequent equipment maintenance, improve the work process, and meet the use requirements;

[0029] The specific working principle of the cooling device body provided in this embodiment is described as follows: the drilling fluid is discharged from the drilling equipment and introduced into the cooling and filtering chamber 3 through the pump body. Prior to this, the refrigeration unit 6 works in advance and transports the refrigerant stored therein to the refrigeration group 5 through the pipeline. With the help of the refrigeration group 5, a low-temperature environment is created for the chamber body, so that the drilling fluid in the cooling and filtering chamber 3 is cooled, and corresponding filtering treatment is performed, and then it is transported back to the drilling equipment through the liquid outlet pipe to ensure the subsequent processing work. For the refrigerant that circulates in the refrigeration group 5 and creates a low-temperature environment for the cooling and filtering chamber 3, after absorbing the heat of the drilling fluid, it is discharged through the hot liquid output end of the refrigeration group 5, and is transported to the heat exchange group 8 through the hot liquid output pipe 62 to wait for cooling. Further, the treatment The cooling water in the water tank 2 is transported to the heat exchange group 8 by the water pump 9, and is transported back to the water tank 2 after one circulation, and is pumped out by the water outlet pump 7 and applied to other processing procedures of the drilling work. In the above-mentioned one circulation process of the cooling water, the refrigerant input into the heat exchange group 8 can be heat exchanged. After the heat exchange of the heat exchange group 8, the refrigerant is returned to the refrigeration unit 6 from the cold liquid output end of the heat exchange group 8, waiting for the refrigeration treatment of the refrigeration unit 6. The circulation process of the above-mentioned refrigerant first creates a low-temperature environment for cooling the filter bin 3, and then circulates to the heat exchange group 8 for heat exchange treatment. On the one hand, it can improve the refrigeration process of the refrigeration unit 6 for the refrigerant. On the other hand, the cooling water (with a certain amount of heat) after heat exchange can also be transported to other processing procedures, reducing the waste of resources and saving costs.

[0030] In the above process: through the refrigeration unit 6, the refrigerant can be transported to the refrigeration group 5, so as to create a cooling atmosphere for the cooling and filtering chamber 3, and ensure the effective realization of the cooling and cooling of the drilling fluid; through the water tank 2 and the heat exchange group 8, the cooling water is used to further cool the refrigerant that has completed the cooling work, that is, the refrigerant circulated through the heat exchange group 8 is output and then input into the refrigeration unit 6, and the time cost when it is processed to a lower temperature is reduced, which improves the working process. At the same time, it ensures the convenience of the operation and use of the device and meets the use requirements; through the cleaning equipment 14, it can realize the cleaning of the chamber during the output process of the drilling fluid to ensure the cleanliness of the device and equipment, especially to ensure the output and subsequent use of the drilling fluid; the device has a reasonable design, a simple structure, and is easy to process and integrates filtering and cooling functions, that is, while filtering the drilling fluid, it completes the cooling and cooling treatment of the drilling fluid, reduces the complexity of the processing work, saves costs, improves the working process, and effectively meets the production and processing needs.

[0031] In order to filter the impurities such as mud and sand in the drilling fluid transported to the bin by the liquid inlet pipe 11, specifically: the first-level filtering device 12 includes a conveying sleeve 121, wherein the end of the conveying sleeve 121 is designed to be closed and corresponds to the inner diameter of the filter sleeve 1221, so as to ensure that the drilling fluid can be effectively transported to the storage tube 1222, and then flow out from the opening of the storage tube 1222. A part of the large particles of impurities will remain under the storage tube 1222, and the small particles of impurities will be filtered by the filter sleeve 1221 and output by the subsequent mud extraction pipe 1223, thereby ensuring the functionality of the device. A first-level filtering group 122 is arranged on one side of the conveying sleeve 121, and the first-level filtering group 122 includes a filter sleeve 1221, and a C-shaped filter is arranged in the filter sleeve 1221. The storage tube 1222 is designed for arrangement, and a mud extraction pipe 1223 is also arranged at the geometric center of the storage tube 1222, which penetrates the filter sleeve 1221 and rests on the inner lower end surface of the cooling filter bin 3. Further, a through hole is opened on the outside of the mud extraction pipe 1223 between the storage tube 1222 and the filter sleeve 1221 to ensure the extraction of impurities such as mud and sand in this part, and a slot is also opened below the mud extraction pipe 1223, so as to extract and process impurities such as mud and sand at the bottom of the bin to meet the use requirements. It should be further explained that a pump body pipe connected to an external mud extraction pump is arranged on the outside of the bin body away from the liquid inlet pipe 11 to ensure the effective realization of the mud extraction action, improve the functionality of the device, greatly improve the working process, and have strong functionality.

[0032] In order to further complete the filtering treatment of the drilling fluid and ensure that the cooled material can be put into use again, the secondary filtering device 13 includes a filter plate 131 designed in a concave shape, a first baffle plate 132 designed in a wave-shaped bend is arranged below the filter plate 131, a second baffle plate 133 designed in a wave-shaped bend is arranged below the first baffle plate 132, a first filter hole 1321 is opened in the first baffle plate 132, and a second filter hole 1331 is opened on the second baffle plate 133, and the aperture of the second filter hole 1331 is larger than that of the first filter hole The aperture of 1321 is specifically described as: a key-shaped groove with an aperture smaller than the first filter hole 1321 is also opened inside the filter plate 131 to ensure the effective outflow of the material liquid, and to isolate impurities to avoid damage to the drilling fluid during subsequent use. Further, the barrier plate with a wavy bending design can filter the drilling fluid while relatively increasing its capacity. The secondary filtering device 13 has a multi-stage filtering effect, which fully guarantees the use effect of the drilling fluid after filtration and improves the functionality of the device.

[0033] In order to ensure the effective implementation of the cleaning work and the effective transmission of the driving power, the liquid outlet pipe 10 includes a connecting pipe 101 designed in a T shape, and a rotating blade 102 is arranged in the connecting pipe 101. A driving rod 103 for providing driving power to the cleaning device 14 is arranged on one side of the rotating blade 102. The specific description is: a pipeline designed in an L shape is also arranged above the connecting pipe 101 and extends into the cooling and filtering chamber 3. When the external power equipment extracts the liquid outlet pipe 10, the drilling fluid after cooling and filtering is flowed into the connecting pipe 101 through the pipeline flow, and acts on the rotating blade 102 to make it rotate. Of course, the selected rotating blade 102 can be an axial flow spiral blade, or That is to say, on the one hand, the descending drilling fluid will act on the rotating blades 102, and on the other hand, the drilling fluid has a certain extraction power when it is discharged through one side of the connecting pipe 101, and will also act on the rotating blades 102 to make it rotate, and then this part of the power can be transmitted to the driving rod 103, and then the driving rod 103 acts on the rotating shaft 143. In this way, a good driving power can be provided for the cleaning equipment 14, and the cleaning equipment 14 can be fully ensured to cool the cooling filter bin 3, especially the angle where the filter plate 131 and the cooling filter bin 3 are connected, so as to reduce the possibility of accumulation of impurities, reduce labor intensity, improve the functionality of the device, and have strong linkage, which effectively meets the use requirements.

[0034] In order to effectively clean the cooling filter bin 3, especially to process the sediment attached to the filter plate 131 in the bin, especially at the angle between the setting position and the cooling filter bin 3, to ensure the cleanliness of the device body, the cleaning device 14 includes a mounting seat 141, on which a running rail 142 designed in a ring shape is arranged, and a rotating shaft 143 is arranged at the output end of the driving rod 103, wherein the rotating shaft 143 is arranged close to the bottom of the running rail 142, providing convenient conditions for the movement and adjustment of the moving block 147 in the shell 144, and further, the end of the rotating shaft 143 is provided with a shell 144 , key grooves are provided on both sides of the shell 144 to facilitate the movement of the connecting rod 149 with the moving rod. A rotating rod 145 is provided in the shell 144, and a roller 146 is provided at the end of the rotating rod 145, which corresponds to the running rail 142. A moving block 147 is provided on the rotating rod 145 located in the shell 144, and compression springs 148 are sleeved on the rotating rod 145 located on both sides of the moving block 147. A connecting rod 149 with an obtuse angle design is provided on the moving block 147, and a cleaning brush 1410 is provided on the connecting rod 149. The cleaning brush 1410 includes a support rod and a brush, which is used to clean the inside of the bin in a rotating manner. , improve the functionality of the device, specifically described as follows: when the driving rod 103 receives driving power, the driving power acts on the rotating shaft 143 and drives the shell 144 to rotate. During this process, the rotating rod 145 also rotates with the shell 144 relative to the running rail 142. At the same time, since the setting position of the rotating shaft 143 is lower and not at the geometric center of the running rail 142, the rotating rod 145 and the moving block 147 will cause the moving block 147 to move and adjust relative to the inside of the shell 144 during the rotation process. That is, as the shell 144 rotates, when the rotating rod 145 rotates to a vertical state, the cleaning brush 1410 is in a The cleaning brush 1410 is at its lowest vertical position and fits in with the connection between the bin wall and the filter plate 131 to complete the scraping cleaning. The rotating rod 145 continues to rotate, and the moving block 147 also moves. The cleaning brush 1410 is raised in vertical height and gradually shortened from the connection between the filter plate 131 and the bin wall, and fits in above the filter plate 131 to complete the cleaning action. In this way, the cleaning brush 1410 can gradually fit in with the filter plate 131 as the equipment runs, scrape it, and then transition to the horizontal direction, effectively completing the cleaning of the device, ensuring its cleanliness, reducing the difficulty of operation, and effectively meeting the use requirements.

[0035] In order to further improve the rationality of the establishment of the device, the angle between the opening direction of the storage pipe 1222 and the horizontal plane is 0°~20°, which is specifically described as: the purpose of establishing the opening is: on the one hand, to ensure that the drilling fluid can flow out from the opening in the form of overflow, providing convenient conditions for subsequent export; on the other hand, it can have a sedimentation effect on impurities such as mud and sand in the drilling fluid, and the filter sleeve 1221 on the outer periphery of the storage pipe 1222 can also filter and isolate these impurities, reducing the possibility of them entering the cooling and filtering filter bin with the drilling fluid, thereby improving the filtering work process, greatly improving the functionality of the device and equipment, and effectively meeting the use requirements.

[0036] The above description is only a preferred embodiment of the present invention and does not limit the present invention in other forms. Any technician familiar with the profession may use the technical content disclosed above to change or modify it into an equivalent embodiment with equivalent changes and apply it to other fields. However, any simple modification, equivalent change and modification made to the above embodiment based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still falls within the protection scope of the technical solution of the present invention.

Claims

1. A surface cooling and processing device for drilling fluid, comprising a cooling and processing device body, wherein the cooling and processing device body comprises a mounting frame, characterized in that: A water tank is arranged in the mounting frame, and a cooling and filtering chamber with a conical table-like design is arranged in the mounting frame located above the water tank, a heat dissipation fan is arranged above the cooling and filtering chamber, a refrigeration group is arranged on the outside of the cooling and filtering chamber, a refrigeration unit is arranged on one side of the water tank, a water outlet pump is arranged on the other side of the water tank, a heat exchange group is arranged on the upper side of the refrigeration unit, a cold liquid output pipe is arranged below the refrigeration unit and is connected to the refrigeration input end of the refrigeration group, a hot liquid output pipe is arranged at the hot liquid output end of the refrigeration group and is connected to the hot liquid input end of the heat exchange group, a water pump is arranged on one side of the water tank, the water pumping end of the water pump is connected to the water tank, the water outlet end of the water pump is connected to the heat exchange input end of the heat exchange group, and the cold liquid output end of the heat exchange group is connected to the upper side of the refrigeration unit The cooling filter bin is provided with a liquid outlet pipe and a liquid inlet pipe respectively, one side of the liquid outlet pipe is provided with a primary filtering device, the upper side of the primary filtering device is provided with a secondary filtering device, the upper side of the secondary filtering device is provided with a cleaning device, the cleaning device comprises a mounting seat and a rotating shaft, the mounting seat is provided with a running rail designed in a ring shape, the end of the rotating shaft is provided with a shell, a rotating rod is provided in the shell, the end of the rotating rod is provided with a roller corresponding to the running rail, a moving block is provided on the rotating rod located in the shell, and compression springs are sleeved on the rotating rods located on both sides of the moving block, a connecting rod designed in an obtuse angle is provided on the moving block, and a cleaning brush is provided on the connecting rod.

2. The drilling fluid surface cooling treatment device according to claim 1, characterized in that: The primary filtering equipment includes a conveying sleeve, a primary filtering group is arranged on one side of the conveying sleeve, and the primary filtering group includes a filter sleeve. A holding tube arranged in a C shape is arranged in the filter sleeve. A mud suction pipe is also arranged at the geometric center of the holding tube, which passes through the filter sleeve and rests on the inner lower end surface of the cooling filter bin.

3. The surface cooling treatment device for drilling fluid according to claim 2, characterized in that: The secondary filtering device includes a filter plate designed in a concave shape, a first baffle plate designed in a wave-bending shape is arranged below the filter plate, a second baffle plate designed in a wave-bending shape is arranged below the first baffle plate, a first filter hole is opened in the first baffle plate, and a second filter hole is opened on the second baffle plate, and the aperture of the second filter hole is larger than the aperture of the first filter hole.

4. The surface cooling treatment device for drilling fluid according to claim 3 is characterized in that: The liquid outlet pipe comprises a connecting pipe designed in a T shape, a rotating blade is arranged in the connecting pipe, and a driving rod for providing driving power to the cleaning device is arranged on one side of the rotating blade.

5. The surface cooling treatment device for drilling fluid according to claim 2, characterized in that: The angle between the opening direction of the container tube and the horizontal plane is 0° to 20°.

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