CN215927297U

CN215927297U - Drilling fluid cooling device

Info

Publication number: CN215927297U
Application number: CN202121986336.1U
Authority: CN
Inventors: 孔玉波
Original assignee: Individual
Current assignee: Individual
Priority date: 2021-08-23
Filing date: 2021-08-23
Publication date: 2022-03-01
Anticipated expiration: 2031-08-23

Abstract

The utility model discloses a drilling fluid cooling device which comprises a box body, wherein a cooling box is fixedly connected to the bottom of the box body, cooling water is filled in the cooling box, a liquid inlet pipe is communicated and fixed to the left side of the top of the box body, a liquid discharge pipe is communicated and fixed to the bottom of the left side of the box body, a valve is fixedly connected to the left end of the liquid discharge pipe, a circular seat is fixedly connected to the inner wall of the top of the box body, and a circular box with an opening at the top is sleeved on the circular seat in a sealing and rotating mode. The drilling fluid stirring and cooling device is reasonable in design, the drilling fluid can be rapidly cooled and cooled from the inside while being stirred, the cooling efficiency and the uniformity are improved under the matching of internal circulation and stirring of cooling water, high-temperature cooling water can be automatically changed in the cooling process, the continuous stability of the cooling work is further improved, manual temperature measurement and water changing of personnel are not needed, time and labor are saved, and the using requirements are met.

Description

Drilling fluid cooling device

Technical Field

The utility model relates to the technical field of cooling equipment, in particular to a drilling fluid cooling device.

Background

The drilling fluid is a general term for various circulating fluids meeting the requirements of drilling work in multiple functions in the drilling process; the drilling fluid is the blood of the well drilling, also called drilling flushing fluid; the drilling fluid returned from the wellhead can carry a large amount of heat and needs to be cooled, so that cooling equipment is needed, most of the existing cooling equipment is that a cooling water coil is arranged outside a box body, then the drilling fluid needing to be cooled is injected into the box body, and the external cooling water coil is utilized for heat absorption, cooling and cooling in a heat transfer mode;

the cooling pipe is arranged outside the box body, so that the box body cannot be directly and quickly contacted with the drilling fluid and is separated by the box body, the cooling efficiency is low, and the stirring function of the drilling fluid is lacked, so that the cooling uniformity is poor; in summary, the drilling fluid cooling device is lack of a function of rapidly cooling the drilling fluid in the drilling fluid while stirring, and cannot meet the use requirement.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the defects in the prior art and provides a drilling fluid cooling device.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a drilling fluid cooling device comprises a box body, wherein a cooling box is fixedly connected to the bottom of the box body, cooling water is filled in the cooling box, a liquid inlet pipe is communicated and fixed to the left side of the top of the box body, a liquid discharge pipe is communicated and fixed to the bottom of the left side of the box body, a valve is fixedly connected to the left end of the liquid discharge pipe, a circular seat is fixedly connected to the inner wall of the top of the box body, a circular box with an opening at the top is sleeved on the circular seat in a sealing and rotating mode, an L-shaped channel communicated with the inside of the circular box is formed in the top of the right side of the circular seat, a first water inlet pipe communicated with the L-shaped channel is fixedly connected to the top of the right side of the box body, a water pump is fixedly connected to the top of the right side of the box body, a water outlet of the water pump extends into the box body and is communicated with and fixed to the right end of the first water inlet pipe, a water inlet of the water pump is communicated and fixed with a water suction pipe, and the bottom of the water suction pipe extends into the cooling box body and is fixedly connected with a filter screen, the bottom intercommunication of circle box is fixed with inner loop stirring cooling body, and in inner loop stirring cooling body's bottom extended to the cooler bin, the reciprocal stirring actuating mechanism of top fixedly connected with of box, and the bottom of reciprocal stirring actuating mechanism run through circular seat and circle box in proper order and with inner loop stirring cooling body fixed connection, be provided with automatic water changing mechanism on the cooler bin.

Preferably, the inner loop stirring cooling body includes the snakelike cooling copper pipe that two symmetries set up, violently manage and the standpipe, and the top of two snakelike cooling copper pipes all communicates and fixes with the bottom of circle box, and the bottom of two snakelike cooling copper pipes communicates and fixes with the both ends of violently managing respectively, and the top of standpipe communicates and fixes with the bottom of violently managing, and in the bottom of standpipe extended to the cooler bin, the sealed rotation cover of box was established on the standpipe.

Preferably, reciprocal stirring actuating mechanism includes that pivot, gear, rack, L shape remove seat, L shape guide bar and reciprocal push rod motor, the bottom of reciprocal push rod motor and the bottom of L shape guide bar all with the top fixed connection of box, L shape removes the seat slip cover and establishes on L shape guide bar, the output of reciprocal push rod motor and the right side fixed connection of L shape removal seat, the rack inlays the dress and fixes the front side at L shape removal seat, the rear side of gear meshes with the front side of rack mutually, the bottom of gear and the top fixed connection of pivot, the bottom of pivot run through circular seat and circle box in proper order and with the top fixed connection of violently managing, the pivot is located between two snakelike cooling copper pipes, circle box and box all seal the rotation cover establish in the pivot.

Preferably, automatic water changing mechanism includes second inlet tube, drain pipe, temperature detect switch and two solenoid valves, and the right-hand member of second inlet tube and the left side bottom intercommunication of cooler bin are fixed, and the right-hand member of drain pipe and the left side top intercommunication of cooler bin are fixed, the left end of second inlet tube and drain pipe respectively with the right side fixed connection of the solenoid valve that corresponds, temperature detect switch fixed mounting is in the left side of cooler bin, temperature detect switch's temperature detection end extends to in the cooler bin, temperature detect switch and two solenoid valve electric connection.

Preferably, a first sealing bearing is fixedly sleeved in the round box, and an inner ring of the first sealing bearing is fixedly sleeved with the outer side of the round seat.

Preferably, two first round holes are formed in the inner wall of the bottom of the round box, the inner wall of each first round hole is fixedly connected with the outer side of the corresponding snake-shaped cooling copper pipe, a second round hole is formed in the inner wall of the bottom of the box body, a second sealing bearing is fixedly sleeved in each second round hole, and the inner ring of each second sealing bearing is fixedly sleeved with the outer side of the corresponding vertical pipe.

Preferably, a third round hole is formed in the inner wall of the bottom of the round box, a third sealing bearing is fixedly sleeved in the third round hole, a fourth round hole is formed in the inner wall of the top of the box body, a fourth sealing bearing is fixedly sleeved in the fourth round hole, the inner ring of the fourth sealing bearing and the inner ring of the third sealing bearing are fixedly sleeved with the outer side of the rotating shaft, a round through hole is formed in the top of the round seat, and the rotating shaft is located in the round through hole and is not in contact with the inner wall of the round through hole.

Preferably, a rectangular hole is formed in the left side of the L-shaped moving seat, the inner wall of the rectangular hole is connected with the outer side of the L-shaped guide rod in a sliding mode, a groove is formed in the front side of the L-shaped moving seat, and the inner wall of the groove is fixedly connected with the outer side of the rack.

Compared with the prior art, the utility model has the beneficial effects that:

through the box body, a liquid inlet pipe, a cooling box, a second water inlet pipe, a water outlet pipe, an electromagnetic valve, a temperature control switch, a round seat, a round box, a serpentine cooling copper pipe, a transverse pipe, a vertical pipe, an L-shaped channel, a first water inlet pipe, a water pump, a water suction pipe, a rotating shaft, a gear, an L-shaped guide rod, a rack, an L-shaped movable seat and a reciprocating push rod motor are matched, drilling fluid is injected into the box body through the liquid inlet pipe, the water pump and the reciprocating push rod motor are started, the water pump extracts cooling water in the cooling box through the water suction pipe and sequentially discharges the cooling water into the round box through the first water inlet pipe and the L-shaped channel, the cooling water downwards enters the two serpentine cooling copper pipes, then downwards converges into the transverse pipe, then downwards flows into the cooling box through the vertical pipe and is extracted again by the water pump, cooling water circulation can be formed in the box body, the effect of directly absorbing heat and reducing the temperature in the box is achieved, the reciprocating push rod motor drives the L-shaped movable seat to reciprocate left and right on the L-shaped guide rod, the L-shaped moving seat drives the rack to move left and right in a reciprocating mode, the rack drives the gear to rotate in a reciprocating mode and in a reverse mode, the gear drives the transverse pipe to rotate in a reciprocating mode and in a reverse mode through the rotating shaft, the transverse pipe drives the vertical pipe and the two S-shaped cooling copper pipes to rotate in a reciprocating mode and in a reverse mode, the two S-shaped cooling copper pipes which rotate in a reciprocating mode and in the reverse mode can stir drilling fluid in a reciprocating mode and in a reciprocating mode, the effect of quickly cooling the drilling fluid from the inside while stirring is achieved, and cooling uniformity is improved;

the solenoid valve on the second inlet tube is connected with the external tap water pipe, the solenoid valve on the drain pipe is connected with the external reservoir, temperature detect switch detects when cooling water temperature is higher than preset temperature, control two solenoid valves and open, external running water enters into the cooler bin through the second inlet tube this moment, the cooling water in the cooler bin is in drain pipe discharge to external reservoir, along with advancing one and going out, can form the effect of automatic water changing, when temperature detect switch senses that the temperature of cooling water is less than when presetting the temperature, control two solenoid valves and close, through the mode of automatic change high temperature cooling water, further improve the stability of continuation of cooling work.

The drilling fluid stirring and cooling device is reasonable in design, the drilling fluid can be rapidly cooled and cooled from the inside while being stirred, the cooling efficiency and the uniformity are improved under the matching of internal circulation and stirring of cooling water, high-temperature cooling water can be automatically changed in the cooling process, the continuous stability of the cooling work is further improved, manual temperature measurement and water changing of personnel are not needed, time and labor are saved, and the using requirements are met.

Drawings

Fig. 1 is a schematic structural diagram of a drilling fluid cooling device according to the present invention;

fig. 2 is a schematic sectional structure view of fig. 1.

In the figure: the device comprises a box body 1, a liquid inlet pipe 101, a cooling box 2, a second water inlet pipe 201, a drain pipe 202, an electromagnetic valve 203, a temperature control switch 204, a circular seat 3, a circular box 4, a serpentine cooling copper pipe 5, a horizontal pipe 6, a vertical pipe 7, an L-shaped channel 8, a first water inlet pipe 9, a water pump 10, a water suction pipe 11, a rotating shaft 12, a gear 13, an L-shaped guide rod 14, a rack 15, a movable seat 16L and a reciprocating push rod motor 17.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments.

Referring to fig. 1-2, a drilling fluid cooling device comprises a box body 1, a cooling box 2 is fixedly connected to the bottom of the box body 1, cooling water is filled in the cooling box 2, a liquid inlet pipe 101 is communicated and fixed to the left side of the top of the box body 1, a liquid outlet pipe is communicated and fixed to the bottom of the left side of the box body 1, a valve is fixedly connected to the left end of the liquid outlet pipe, a circular seat 3 is fixedly connected to the inner wall of the top of the box body 1, a circular box 4 with an open top is hermetically and rotatably sleeved on the circular seat 3, an L-shaped channel 8 communicated with the inside of the circular box 4 is formed in the top of the right side of the circular seat 3, a first water inlet pipe 9 communicated with the L-shaped channel 8 is fixedly connected to the top of the right side of the box body 1, a water pump 10 is fixedly connected to the top of the right side of the box body 1, a water outlet of the water pump 10 extends into the box body 1 and is communicated and fixed to the right end of the first water inlet pipe 9, a water inlet 11 is communicated and fixed to the bottom end of the water pump 10, the bottom end of the water suction pipe 11 extends into the cooling box 2 and is fixedly connected with a filter screen, the bottom of the round box 4 is communicated and fixed with an internal circulation stirring and cooling mechanism, the bottom end of the internal circulation stirring and cooling mechanism extends into the cooling box 2, the top of the box body 1 is fixedly connected with a reciprocating stirring driving mechanism, the bottom end of the reciprocating stirring driving mechanism sequentially penetrates through the round seat 3 and the round box 4 and is fixedly connected with the internal circulation stirring and cooling mechanism, and the cooling box 2 is provided with an automatic water changing mechanism;

the internal circulation stirring and cooling mechanism comprises two serpentine cooling copper pipes 5, a transverse pipe 6 and a vertical pipe 7 which are symmetrically arranged, the top ends of the two serpentine cooling copper pipes 5 are communicated and fixed with the bottom of the round box 4, the bottom ends of the two serpentine cooling copper pipes 5 are respectively communicated and fixed with the two ends of the transverse pipe 6, the top end of the vertical pipe 7 is communicated and fixed with the bottom of the transverse pipe 6, the bottom end of the vertical pipe 7 extends into the cooling box 2, and the box body 1 is sleeved on the vertical pipe 7 in a sealing and rotating manner;

the reciprocating stirring driving mechanism comprises a rotating shaft 12, a gear 13, a rack 15, an L-shaped moving seat 16, an L-shaped guide rod 14 and a reciprocating push rod motor 17, wherein the bottom of the reciprocating push rod motor 17 and the bottom end of the L-shaped guide rod 14 are fixedly connected with the top of the box body 1, the L-shaped moving seat 16 is sleeved on the L-shaped guide rod 14 in a sliding mode, the output end of the reciprocating push rod motor 17 is fixedly connected with the right side of the L-shaped moving seat 16, the rack 15 is embedded and fixed on the front side of the L-shaped moving seat 16, the rear side of the gear 13 is meshed with the front side of the rack 15, the bottom of the gear 13 is fixedly connected with the top end of the rotating shaft 12, the bottom end of the rotating shaft 12 sequentially penetrates through the circular seat 3 and the circular box 4 and is fixedly connected with the top of the transverse pipe 6, the rotating shaft 12 is located between the two snakelike cooling copper pipes 5, and the circular box 4 and the box body 1 are sleeved on the rotating shaft 12 in a sealing mode;

the automatic water changing mechanism comprises a second water inlet pipe 201, a water outlet pipe 202, a temperature control switch 204 and two electromagnetic valves 203, wherein the right end of the second water inlet pipe 201 is communicated and fixed with the bottom of the left side of the cooling box 2, the right end of the water outlet pipe 202 is communicated and fixed with the top of the left side of the cooling box 2, the left ends of the second water inlet pipe 201 and the water outlet pipe 202 are respectively fixedly connected with the right sides of the corresponding electromagnetic valves 203, the temperature control switch 204 is fixedly arranged on the left side of the cooling box 2, the temperature detection end of the temperature control switch 204 extends into the cooling box 2, and the temperature control switch 204 is electrically connected with the two electromagnetic valves 203. And the manual temperature measurement of personnel is not needed for water change, time and labor are saved, and the use requirement is met.

In the utility model, a first sealing bearing is fixedly sleeved in a round box 4, the inner ring of the first sealing bearing is fixedly sleeved with the outer side of a round seat 3, two first round holes are formed in the inner wall of the bottom of the round box 4, the inner wall of each first round hole is fixedly connected with the outer side of a corresponding snake-shaped cooling copper pipe 5, a second round hole is formed in the inner wall of the bottom of a box body 1, a second sealing bearing is fixedly sleeved in the second round hole, the inner ring of the second sealing bearing is fixedly sleeved with the outer side of a vertical pipe 7, a third round hole is formed in the inner wall of the bottom of the round box 4, a third sealing bearing is fixedly sleeved in the third round hole, a fourth round hole is formed in the inner wall of the top of the box body 1, a fourth sealing bearing is fixedly sleeved in the fourth round hole, the inner ring of the fourth sealing bearing and the inner ring of the third sealing bearing are both fixedly sleeved with the outer side of a rotating shaft 12, a round hole is formed in the top of the round seat 3, the drilling fluid cooling device is reasonable in design, fast cooling of the drilling fluid is facilitated from the inside while the drilling fluid is stirred, cooling efficiency and uniformity are improved under the matching of internal circulation and stirring of cooling water, automatic water changing of high-temperature cooling water is facilitated in the cooling process, continuous stability of cooling work is further improved, manual temperature measurement and water changing of personnel are not needed, time and labor are saved, and using requirements are met.

The working principle is as follows: when the cooling device is used, drilling fluid to be cooled is injected into the box body 1 through the liquid inlet pipe 101, the water pump 10 and the reciprocating push rod motor 17 are started, the water pump 10 extracts cooling water in the cooling box 2 through the water suction pipe 11 and discharges the cooling water into the first water inlet pipe 9, the cooling water enters the round box 4 through the L-shaped channel 8 and then downwards enters the two serpentine cooling copper pipes 5 and then downwards converges to the transverse pipe 6, finally downwards flows into the cooling box 2 through the vertical pipe 7 and is pumped again by the water pump 10, cooling water circulation can be formed in the box body 1, the circulating cooling water absorbs heat to the serpentine cooling copper pipes 5 and cools the high-temperature drilling fluid, and the effect of directly absorbing heat and cooling the high-temperature drilling fluid is achieved;

when the reciprocating push rod motor 17 is started, the L-shaped moving seat 16 is driven to move left and right in a reciprocating mode, the L-shaped moving seat 16 slides on the L-shaped guide rod 14, the L-shaped moving seat 16 drives the rack 15 to move left and right in a reciprocating mode, the rack 15 drives the gear 13 meshed with the rack to rotate in a reciprocating mode, the gear 13 drives the rotating shaft 12 to rotate in a reciprocating mode, the rotating shaft 12 drives the transverse pipe 6 to rotate in a reciprocating mode, the transverse pipe 6 drives the vertical pipe 7 and the two serpentine cooling copper pipes 5 to rotate in a reciprocating mode, the two serpentine cooling copper pipes 5 rotating in the reciprocating mode can stir drilling fluid back and forth in a reciprocating mode, the contact range of the drilling fluid is enlarged, cooling uniformity is improved, and the effect of quickly cooling the drilling fluid from the inside while stirring is achieved;

when in use, the electromagnetic valve 203 on the second water inlet pipe 201 is connected with an external tap water pipe, the electromagnetic valve 203 on the water outlet pipe 202 is connected with an external water storage tank, because the temperature of cooling water gradually increases along with heat absorption, cooling water temperature in the cooling tank 2 is detected by the temperature control switch 204, when the temperature of the cooling water is detected to be higher than a preset temperature, the temperature control switch 204 controls the two electromagnetic valves 203 to open, at the moment, external tap water enters the cooling tank 2 through the second water inlet pipe 201, the cooling water in the cooling tank 2 is discharged into the external water storage tank through the water outlet pipe 202, water can be cooled along with one inlet and one outlet, an automatic water changing effect is formed, when the temperature control switch 204 senses that the temperature of the cooling water is lower than the preset temperature, the temperature control switch 204 controls the two electromagnetic valves 203 to close, so that automatic water changing operation can be realized on high-temperature cooling water in the process of temperature reduction, further improving the continuous stability of the cooling operation.

The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and equivalent alternatives or modifications according to the technical solution of the present invention and the inventive concept thereof should be covered by the scope of the present invention.

Claims

1. A drilling fluid cooling device comprises a box body (1) and is characterized in that a cooling box (2) is fixedly connected to the bottom of the box body (1), cooling water is filled in the cooling box (2), a liquid inlet pipe (101) is communicated and fixed to the left side of the top of the box body (1), a liquid discharge pipe is communicated and fixed to the bottom of the left side of the box body (1), a valve is fixedly connected to the left end of the liquid discharge pipe, a circular seat (3) is fixedly connected to the inner wall of the top of the box body (1), a circular box (4) with the top arranged as an opening is sleeved on the circular seat (3) in a sealing and rotating mode, an L-shaped channel (8) communicated with the inside of the circular box (4) is formed in the top of the right side of the circular seat (3), a first water inlet pipe (9) communicated with the L-shaped channel (8) is fixedly connected to the top of the right side of the circular seat (3), and a water pump (10) is fixedly connected to the top of the right side of the box body (1), the delivery port of water pump (10) extends to in box (1) and communicates and fix with the right-hand member of first inlet tube (9), and the water inlet bottom intercommunication of water pump (10) is fixed with and absorbs water tub (11), and the bottom that absorbs water tub (11) extends to in cooler bin (2) and fixedly connected with filter screen, the bottom intercommunication of circle box (4) is fixed with inner loop stirring cooling body, and inner loop stirring cooling body's bottom extends to in cooler bin (2), the reciprocal stirring actuating mechanism of top fixedly connected with of box (1), and the bottom of reciprocal stirring actuating mechanism run through circular seat (3) and circle box (4) in proper order and with inner loop stirring cooling body fixed connection, be provided with automatic water changing mechanism on cooler bin (2).

2. The drilling fluid cooling device according to claim 1, wherein the internal circulation stirring and cooling mechanism comprises two symmetrically arranged serpentine cooling copper pipes (5), a transverse pipe (6) and a vertical pipe (7), the top ends of the two serpentine cooling copper pipes (5) are communicated and fixed with the bottom of the round box (4), the bottom ends of the two serpentine cooling copper pipes (5) are communicated and fixed with the two ends of the transverse pipe (6) respectively, the top end of the vertical pipe (7) is communicated and fixed with the bottom of the transverse pipe (6), the bottom end of the vertical pipe (7) extends into the cooling box (2), and the box body (1) is sleeved on the vertical pipe (7) in a sealing and rotating manner.

3. The drilling fluid cooling device according to claim 1, wherein the reciprocating stirring driving mechanism comprises a rotating shaft (12), a gear (13), a rack (15), an L-shaped movable seat (16), an L-shaped guide rod (14) and a reciprocating push rod motor (17), the bottom of the reciprocating push rod motor (17) and the bottom end of the L-shaped guide rod (14) are fixedly connected with the top of the box body (1), the L-shaped movable seat (16) is slidably sleeved on the L-shaped guide rod (14), the output end of the reciprocating push rod motor (17) is fixedly connected with the right side of the L-shaped movable seat (16), the rack (15) is fixedly embedded in the front side of the L-shaped movable seat (16), the rear side of the gear (13) is meshed with the front side of the rack (15), the bottom of the gear (13) is fixedly connected with the top end of the rotating shaft (12), the bottom end of the rotating shaft (12) sequentially penetrates through the circular seat (3) and the circular box (4) and is fixedly connected with the top of the transverse pipe (6), the rotating shaft (12) is positioned between the two snakelike cooling copper pipes (5), and the round box (4) and the box body (1) are hermetically sleeved on the rotating shaft (12) in a rotating way.

4. The drilling fluid cooling device according to claim 1, wherein the automatic water changing mechanism comprises a second water inlet pipe (201), a water outlet pipe (202), a temperature control switch (204) and two electromagnetic valves (203), the right end of the second water inlet pipe (201) is communicated and fixed with the bottom of the left side of the cooling box (2), the right end of the water outlet pipe (202) is communicated and fixed with the top of the left side of the cooling box (2), the left ends of the second water inlet pipe (201) and the water outlet pipe (202) are respectively fixedly connected with the right sides of the corresponding electromagnetic valves (203), the temperature control switch (204) is fixedly installed on the left side of the cooling box (2), the temperature detection end of the temperature control switch (204) extends into the cooling box (2), and the temperature control switch (204) is electrically connected with the two electromagnetic valves (203).

5. Drilling fluid cooling device according to claim 1, characterized in that the first sealing bearing is fixedly sleeved in the round box (4), and the inner ring of the first sealing bearing is fixedly sleeved with the outer side of the round seat (3).

6. The drilling fluid cooling device according to claim 2, wherein two first circular holes are formed in the inner wall of the bottom of the round box (4), the inner wall of each first circular hole is fixedly connected with the outer side of the corresponding serpentine cooling copper pipe (5), a second circular hole is formed in the inner wall of the bottom of the box body (1), a second sealing bearing is fixedly sleeved in each second circular hole, and the inner ring of each second sealing bearing is fixedly sleeved with the outer side of the corresponding vertical pipe (7).

7. The drilling fluid cooling device according to claim 3, wherein a third circular hole is formed in the bottom inner wall of the circular box (4), a third sealing bearing is fixedly sleeved in the third circular hole, a fourth circular hole is formed in the top inner wall of the box body (1), a fourth sealing bearing is fixedly sleeved in the fourth circular hole, an inner ring of the fourth sealing bearing and an inner ring of the third sealing bearing are fixedly sleeved on the outer side of the rotating shaft (12), a circular through hole is formed in the top of the circular seat (3), and the rotating shaft (12) is located in the circular through hole and does not contact with the inner wall of the circular through hole.

8. The drilling fluid cooling device according to claim 3, wherein a rectangular hole is formed in the left side of the L-shaped movable seat (16), the inner wall of the rectangular hole is slidably connected with the outer side of the L-shaped guide rod (14), a groove is formed in the front side of the L-shaped movable seat (16), and the inner wall of the groove is fixedly connected with the outer side of the rack (15).