Pressure control device of high-temperature circulating pump

Abstract

The utility model relates to the technical field of high-temperature circulating pumps, in particular to a pressure control device of a high-temperature circulating pump, which adjusts the pressure in the high-temperature circulating pump through a pressure adjusting mechanism when the pressure in the high-temperature circulating pump exceeds a threshold value, and controls the pressure in the high-temperature circulating pump through a pressure control mechanism when air exists in the high-temperature circulating pump. Air in the high-temperature circulating pump is exhausted through the exhaust mechanism, and when the interior of the high-temperature circulating pump is cleaned, the interior of the high-temperature circulating pump is cleaned through the pressure adjusting mechanism, so that the practicability of the equipment is improved; comprising a high-temperature circulating pump, and a pressure sensor is arranged in the high-temperature circulating pump; the system further comprises a pressure adjusting mechanism and an exhaust mechanism, and the pressure adjusting mechanism and the exhaust mechanism are both installed on the high-temperature circulating pump. The high-temperature circulating pump conveys high-temperature liquid, the pressure adjusting mechanism adjusts the pressure in the high-temperature circulating pump, and the exhaust mechanism exhausts air in the high-temperature circulating pump.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of high temperature circulating pump especially relates to a high temperature circulating pump pressure control device. BACKGROUND

[0002] High temperature circulating pump is a kind of pump specially used for high temperature liquid circulating delivery, the high temperature circulating pump of prior art such as the utility model patent for a kind of high temperature medium circulating pump with the announcement number CN218882578U and the utility model patent for a kind of pentafluoropropane high temperature circulating pump with the announcement number CN213176059U etc., can all realize the delivery of high temperature liquid.

[0003] But in the use process, it is found that the high temperature circulating pump of prior art is relatively simple in structure, is inconvenient to adjust the pressure inside, is also inconvenient to discharge the air inside, is inconvenient to clean in pump, to lead to poor practicality, so there is an urgent need for a kind of high temperature circulating pump pressure control device to improve the above problems. UTILITY MODEL CONTENT

[0004] To solve the above technical problems, the utility model provides a kind of high temperature circulating pump pressure control device, when the pressure in high temperature circulating pump exceeds threshold value, the pressure in high temperature circulating pump is adjusted by pressure regulating mechanism, when there is air in high temperature circulating pump, the air in high temperature circulating pump is discharged by exhaust mechanism, when the inside of high temperature circulating pump is cleaned, the inside of high temperature circulating pump is cleaned by pressure regulating mechanism, to improve the practicality of equipment.

[0005] The utility model discloses a kind of high temperature circulating pump pressure control devices of the utility model, including high temperature circulating pump, the inside of high temperature circulating pump is provided with pressure sensor;Further including pressure regulating mechanism and exhaust mechanism, pressure regulating mechanism and exhaust mechanism are all installed on high temperature circulating pump;

[0006] The high temperature circulating pump transports high temperature liquid, pressure regulating mechanism adjusts the pressure in high temperature circulating pump, exhaust mechanism discharges the air in high temperature circulating pump;

[0007] When the pressure in high temperature circulating pump exceeds threshold value, the pressure in high temperature circulating pump is adjusted by pressure regulating mechanism, when there is air in high temperature circulating pump, the air in high temperature circulating pump is discharged by exhaust mechanism, when the inside of high temperature circulating pump is cleaned, the inside of high temperature circulating pump is cleaned by pressure regulating mechanism, to improve the practicality of equipment.

[0008] Preferably, the pressure regulating mechanism includes a pressure regulating cylinder, a drain pipe, a cylinder, a piston, an electric control valve, a three-way valve, two sets of electric control valves, and a cleaning mechanism. The high-temperature circulating pump has a drain port at its top and an inlet at its front end. The pressure regulating cylinder, cylinder, and cleaning mechanism are all mounted on the high-temperature circulating pump, with the cleaning mechanism located below the pressure regulating cylinder. The piston is slidably mounted inside the pressure regulating cylinder. The top of the cylinder is connected to the bottom of the piston. One end of the drain pipe is mounted on the top of the pressure regulating cylinder via the electric control valve, and the other end communicates with the interior of the high-temperature circulating pump. One set of ports of the three-way valve is mounted on the top of the pressure regulating cylinder, and the two sets of electric control valves are respectively mounted on the other two sets of ports of the three-way valve. The two sets of electric control valves are connected to a storage device and a high-temperature liquid source, respectively. When the pressure inside the high-temperature circulating pump is lower than a threshold, the cylinder contracts downward, causing the piston to move downward. Simultaneously, the electric control valves connected to the high-temperature liquid source open, draining the high-temperature liquid into the pressure regulating cylinder. In the process, the cylinder extends upwards, while the second electrically controlled valve connected to the high-temperature liquid source closes and the first electrically controlled valve opens, draining the high-temperature liquid in the pressure regulating cylinder into the high-temperature circulating pump through the drain pipe. This increases the pressure inside the high-temperature circulating pump, and the above steps are repeated until the pressure inside the high-temperature circulating pump returns to the threshold range. When the pressure inside the high-temperature circulating pump exceeds the threshold, the cylinder contracts downwards, causing the first piston to move downwards. Simultaneously, the first electrically controlled valve opens, draining the high-temperature liquid from the high-temperature circulating pump into the pressure regulating cylinder through the drain pipe. Then, the first electrically controlled valve closes, and the second electrically controlled valve connected to the storage device opens. The cylinder extends upwards, causing the first piston to move upwards, draining the high-temperature liquid in the pressure regulating cylinder into the storage device. This decreases the pressure inside the high-temperature circulating pump, and the above steps are repeated until the pressure inside the high-temperature circulating pump returns to the threshold range. During long-term use, the high-temperature circulating pump is cleaned internally by a cleaning mechanism to improve the equipment's usability.

[0009] Preferably, the cylinder is a two-way cylinder, and both the top and bottom of the cylinder are provided with retractable shafts, with the piston mounted on the shaft at the top of the cylinder; this facilitates the cylinder to provide power to the cleaning mechanism, thereby improving the practicality of the equipment.

[0010] Preferably, the cleaning mechanism includes a conveying cylinder, piston two, electrically controlled valve three, a conveying pipe, electrically controlled valve four, a three-way valve two, two sets of electrically controlled valve five, and two sets of electrically controlled valve six. The two sets of electrically controlled valve six are respectively installed on the drain port and inlet port of the high-temperature circulating pump. The conveying cylinder is installed on the high-temperature circulating pump. Piston two is slidably installed in the conveying cylinder, and the shaft at the bottom of the cylinder is connected to the top of piston two. One set of ports of electrically controlled valve three and three-way valve two are installed at the bottom of the conveying cylinder. Electrically controlled valve three is connected to electrically controlled valve four through the conveying pipe. Electrically controlled valve four is installed at the bottom of the high-temperature circulating pump. The two sets of electrically controlled valve five are respectively installed on the drain port and inlet port of the high-temperature circulating pump. Do not install on the other two sets of ports of the tee. Connect one set of solenoid valve five to the recovery tank. When adjusting the internal pressure of the high-temperature circulating pump, the solenoid valve five connected to the recovery tank is closed, and the other set of solenoid valve five is normally open. When the top shaft of the cylinder retracts downward, the bottom shaft of the cylinder extends downward. When the top shaft of the cylinder extends upward, the bottom shaft of the cylinder retracts upward. At the same time, air passes through the other set of solenoid valve five into and out of the conveying cylinder, ensuring that piston one discharges high-temperature liquid into or draws it out of the high-temperature circulating pump. When cleaning the inside of the high-temperature circulating pump, close both sets of solenoid valve six and open the normally open solenoid valve. Connect valve 5 to the cleaning fluid tank, then open electric control valves 3 and 4, and close the normally open electric control valve 5. The cylinder bottom shaft retracts upwards, discharging the residual liquid in the high-temperature circulating pump into the delivery cylinder. The cylinder bottom shaft extends downwards, closing electric control valve 3 and opening electric control valve 5 connected to the recovery tank, discharging the residual liquid into the recovery tank. Repeat the above steps to completely drain the residual liquid from the high-temperature circulating pump. Then connect the normally open electric control valve 5 to the cleaning fluid tank, close the electric control valve 5 connected to the recovery tank, and through cylinder movement, repeat the above steps to discharge the cleaning fluid into the high-temperature circulating pump. In the pump, the exhaust mechanism simultaneously expels air from the high-temperature circulating pump. After the high-temperature circulating pump is filled with cleaning fluid, the delivery cylinder is also filled with cleaning fluid. The electric control valve five connected to the cleaning fluid tank is closed. The cylinder repeatedly extends and retracts, causing the cleaning fluid to repeatedly enter and exit the pressure regulating cylinder and the delivery cylinder, thereby making the cleaning fluid in the high-temperature circulating pump flow. The cleaning fluid flushes the inside of the high-temperature circulating pump, cleaning impurities. After cleaning is completed, the electric control valve five connected to the recovery tank is opened, and the cylinder moves to discharge the cleaning fluid and impurities from the high-temperature circulating pump, thus improving the practicality of the equipment.

[0011] Preferably, the exhaust mechanism includes an exhaust pipe, a sealing ball, and a baffle. The exhaust pipe is installed on top of the high-temperature circulating pump, the sealing ball is located in the exhaust pipe, and the baffle is installed on top of the exhaust pipe. When the high-temperature circulating pump is full of liquid, the sealing ball floats to the top of the exhaust pipe and seals it. When there is air in the high-temperature circulating pump, the air floats to the top of the exhaust pipe, the liquid level in the exhaust pipe carries the sealing ball down, and the air is discharged through the top of the exhaust pipe. After the air is discharged, the liquid level in the exhaust pipe carries the sealing ball up and seals the exhaust pipe again. In addition, during the exhaust process, the baffle blocks splashed liquid, thereby improving the practicality of the equipment.

[0012] Preferably, the top of the exhaust pipe is a conical cavity structure; this facilitates the sealing ball to seal the inside of the exhaust pipe, thereby improving the practicality of the equipment.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: when the pressure in the high-temperature circulating pump exceeds the threshold, the pressure in the high-temperature circulating pump is adjusted by the pressure regulating mechanism; when there is air in the high-temperature circulating pump, the air in the high-temperature circulating pump is discharged by the exhaust mechanism; when cleaning the inside of the high-temperature circulating pump, the inside of the high-temperature circulating pump is cleaned by the pressure regulating mechanism, thereby improving the practicality of the equipment. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the first isometric structure of this utility model;

[0015] Figure 2 This is a schematic diagram of the second isometric structure of this utility model;

[0016] Figure 3 This is a front view structural diagram of the present invention;

[0017] Figure 4 This is a partial cross-sectional structural schematic diagram of the present invention;

[0018] Figure 5 This is a front view cross-sectional structural diagram of the pressure regulating mechanism of this utility model.

[0019] The following are labels in the attached diagram: 1. High-temperature circulating pump; 2. Pressure regulating cylinder; 3. Drain pipe; 4. Cylinder; 5. Piston 1; 6. Solenoid valve 1; 7. T-junction 1; 8. Solenoid valve 2; 9. Conveying cylinder; 10. Piston 2; 11. Solenoid valve 3; 12. Conveying pipe; 13. Solenoid valve 4; 14. T-junction 2; 15. Solenoid valve 5; 16. Solenoid valve 6; 17. Exhaust pipe; 18. Sealing ball; 19. Baffle. Detailed Implementation

[0020] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. This utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to make the disclosure of this utility model more thorough and complete. Example 1

[0021] A high-temperature circulating pump pressure control device includes a high-temperature circulating pump 1, wherein a pressure sensor is installed inside the high-temperature circulating pump 1; it also includes a pressure regulating mechanism and an exhaust mechanism, both of which are installed on the high-temperature circulating pump 1.

[0022] The high-temperature circulating pump 1 delivers high-temperature liquid, the pressure regulating mechanism regulates the pressure inside the high-temperature circulating pump 1, and the exhaust mechanism discharges the air inside the high-temperature circulating pump 1.

[0023] The pressure regulating mechanism includes a pressure regulating cylinder 2, a drain pipe 3, a cylinder 4, a piston 5, an electric control valve 6, a three-way valve 7, two sets of electric control valves 8, and a cleaning mechanism. The top of the high-temperature circulating pump 1 is provided with a drain port, and the front end of the high-temperature circulating pump 1 is provided with a liquid inlet. The pressure regulating cylinder 2, the cylinder 4, and the cleaning mechanism are all installed on the high-temperature circulating pump 1, and the cleaning mechanism is located below the pressure regulating cylinder 2. The piston 5 is slidably installed inside the pressure regulating cylinder 2. The top end of the cylinder 4 is connected to the bottom end of the piston 5. One end of the drain pipe 3 is installed on the top of the pressure regulating cylinder 2 through the electric control valve 6, and the other end of the drain pipe 3 is connected to the inside of the high-temperature circulating pump 1. One set of ports of the three-way valve 7 is installed on the top of the pressure regulating cylinder 2, and the two sets of electric control valves 8 are respectively installed on the other two sets of ports of the three-way valve 7.

[0024] The cylinder 4 is a two-way cylinder, and both the top and bottom of the cylinder 4 are provided with retractable shafts. The piston 5 is mounted on the shaft at the top of the cylinder 4.

[0025] The cleaning mechanism includes a conveying cylinder 9, piston 2 10, electric control valve 3 11, conveying pipe 12, electric control valve 4 13, three-way valve 2 14, two sets of electric control valve 5 15 and two sets of electric control valve 6 16. The two sets of electric control valve 6 16 are respectively installed on the drain port and inlet port of the high-temperature circulating pump 1. The conveying cylinder 9 is installed on the high-temperature circulating pump 1. Piston 2 10 is slidably installed in the conveying cylinder 9, and the shaft at the bottom of the cylinder 4 is connected to the top of piston 2 10. One set of ports of electric control valve 3 11 and three-way valve 2 14 are installed at the bottom of the conveying cylinder 9. Electric control valve 3 11 is connected to electric control valve 4 13 through conveying pipe 12. Electric control valve 4 13 is installed at the bottom of the high-temperature circulating pump 1. The two sets of electric control valve 5 15 are respectively installed on the other two sets of ports of three-way valve 2 14.

[0026] In operation, first fill the high-temperature circulating pump 1 with liquid, then start the pump to transport the high-temperature liquid. Next, connect the two sets of electrically controlled valves 8 to the storage device and the high-temperature liquid source, respectively. When the pressure inside the high-temperature circulating pump 1 is below the threshold, the cylinder 4 contracts downwards, causing the piston 5 to move downwards. Simultaneously, the electrically controlled valve 8 connected to the high-temperature liquid source opens, discharging the high-temperature liquid into the pressure regulating cylinder 2. Then, the cylinder 4 extends upwards, simultaneously closing the electrically controlled valve 8 connected to the high-temperature liquid source and opening the electrically controlled valve 6, discharging the high-temperature liquid in the pressure regulating cylinder 2 into the high-temperature circulating pump 1 through the drain pipe 3, thus increasing the pressure inside the pump. This process is repeated. The above steps continue until the pressure inside the high-temperature circulating pump 1 returns to the threshold range. When the pressure inside the high-temperature circulating pump 1 exceeds the threshold, the cylinder 4 contracts downward, causing the piston 5 to move downward. Simultaneously, the solenoid valve 6 opens, allowing the drain pipe 3 to discharge the high-temperature liquid from the high-temperature circulating pump 1 into the pressure regulating cylinder 2. Then, the solenoid valve 6 is closed, and the solenoid valve 8 connected to the storage device is opened. The cylinder 4 extends upward, causing the piston 5 to move upward, discharging the high-temperature liquid from the pressure regulating cylinder 2 into the storage device, thus reducing the pressure inside the high-temperature circulating pump 1. This process is repeated until the pressure inside the high-temperature circulating pump 1 returns to the threshold range. The high-temperature circulating pump 1 is used for an extended period of time. When in use, close both sets of solenoid valves 6-16, connect the normally open solenoid valve 5-15 to the cleaning fluid tank, then open solenoid valves 3-11 and 4-13, and close the normally open solenoid valve 5-15. The cylinder 4 retracts upwards through its bottom shaft, discharging the residual liquid in the high-temperature circulating pump 1 into the delivery cylinder 9. The cylinder 4 then extends downwards through its bottom shaft, closing solenoid valve 3-11 and opening solenoid valve 5-15 connected to the recovery tank, discharging the residual liquid into the recovery tank. Repeat the above steps to completely drain the residual liquid from the high-temperature circulating pump 1. Then, connect the normally open solenoid valve 5-15 to the cleaning fluid tank, close solenoid valve 5-15 connected to the recovery tank, and move cylinder 4, repeating the above steps. The above steps involve discharging the cleaning fluid into the high-temperature circulating pump 1, while simultaneously venting the air from the high-temperature circulating pump 1. After the high-temperature circulating pump 1 is filled with cleaning fluid, the delivery cylinder 9 is also filled with cleaning fluid. The electric control valve 15 connected to the cleaning fluid tank is then closed. The cylinder 4 repeatedly extends and retracts, causing the cleaning fluid to repeatedly flow in and out of the pressure regulating cylinder 2 and the delivery cylinder 9. This allows the cleaning fluid in the high-temperature circulating pump 1 to circulate, flushing the inside of the high-temperature circulating pump 1 and cleaning impurities. After cleaning is complete, the electric control valve 15 connected to the recovery tank is opened, and the cylinder 4 moves to discharge the cleaning fluid and impurities from the high-temperature circulating pump 1, thereby improving the practicality of the equipment. Example 2

[0027] like Figures 1 to 5As shown, a high-temperature circulating pump pressure control device includes a high-temperature circulating pump 1, which has a pressure sensor installed inside; it also includes a pressure regulating mechanism and an exhaust mechanism, both of which are installed on the high-temperature circulating pump 1.

[0028] The high-temperature circulating pump 1 delivers high-temperature liquid, the pressure regulating mechanism regulates the pressure inside the high-temperature circulating pump 1, and the exhaust mechanism discharges the air inside the high-temperature circulating pump 1.

[0029] The pressure regulating mechanism includes a pressure regulating cylinder 2, a drain pipe 3, a cylinder 4, a piston 5, an electric control valve 6, a three-way valve 7, two sets of electric control valves 8, and a cleaning mechanism. The top of the high-temperature circulating pump 1 is provided with a drain port, and the front end of the high-temperature circulating pump 1 is provided with a liquid inlet. The pressure regulating cylinder 2, the cylinder 4, and the cleaning mechanism are all installed on the high-temperature circulating pump 1, and the cleaning mechanism is located below the pressure regulating cylinder 2. The piston 5 is slidably installed inside the pressure regulating cylinder 2. The top end of the cylinder 4 is connected to the bottom end of the piston 5. One end of the drain pipe 3 is installed on the top of the pressure regulating cylinder 2 through the electric control valve 6, and the other end of the drain pipe 3 is connected to the inside of the high-temperature circulating pump 1. One set of ports of the three-way valve 7 is installed on the top of the pressure regulating cylinder 2, and the two sets of electric control valves 8 are respectively installed on the other two sets of ports of the three-way valve 7.

[0030] The cylinder 4 is a two-way cylinder, and both the top and bottom of the cylinder 4 are provided with retractable shafts. The piston 5 is mounted on the shaft at the top of the cylinder 4.

[0031] The cleaning mechanism includes a conveying cylinder 9, piston 2 10, electric control valve 3 11, conveying pipe 12, electric control valve 4 13, three-way valve 2 14, two sets of electric control valve 5 15 and two sets of electric control valve 6 16. The two sets of electric control valve 6 16 are respectively installed on the drain port and inlet port of the high-temperature circulating pump 1. The conveying cylinder 9 is installed on the high-temperature circulating pump 1. Piston 2 10 is slidably installed in the conveying cylinder 9, and the shaft at the bottom of the cylinder 4 is connected to the top of piston 2 10. One set of ports of electric control valve 3 11 and three-way valve 2 14 are installed at the bottom of the conveying cylinder 9. Electric control valve 3 11 is connected to electric control valve 4 13 through conveying pipe 12. Electric control valve 4 13 is installed at the bottom of the high-temperature circulating pump 1. The two sets of electric control valve 5 15 are respectively installed on the other two sets of ports of three-way valve 2 14.

[0032] The exhaust mechanism includes an exhaust pipe 17, a sealing ball 18, and a baffle 19. The exhaust pipe 17 is installed on the top of the high-temperature circulating pump 1, the sealing ball 18 is located in the exhaust pipe 17, and the baffle 19 is installed on the top of the exhaust pipe 17.

[0033] The top of the exhaust pipe 17 is a conical cavity structure.

[0034] In use, first fill the high-temperature circulating pump 1 with liquid, then start the high-temperature circulating pump 1 to transport the high-temperature liquid. Next, connect the two sets of electrically controlled valves 8 to the storage device and the high-temperature liquid source, respectively. When the pressure inside the high-temperature circulating pump 1 is lower than the threshold, the cylinder 4 contracts downward, causing the piston 5 to move downward. Simultaneously, the electrically controlled valve 8 connected to the high-temperature liquid source opens, discharging the high-temperature liquid into the pressure regulating cylinder 2. Then, the cylinder 4 extends upward, simultaneously closing the electrically controlled valve 8 connected to the high-temperature liquid source and opening the electrically controlled valve 6, discharging the high-temperature liquid in the pressure regulating cylinder 2 into the high-temperature circulating pump 1 through the drain pipe 3, thus increasing the pressure inside the high-temperature circulating pump 1. Repeat the above steps until the pressure inside the high-temperature circulating pump 1 returns to the threshold range. When the pressure inside the high-temperature circulating pump 1 exceeds the threshold, the cylinder 4 contracts downward, causing the piston 5 to move downward. Simultaneously, the electronic control valve 6 opens, allowing the drain pipe 3 to discharge the high-temperature liquid from the high-temperature circulating pump 1 into the pressure regulating cylinder 2. Then, the electronic control valve 6 closes, and the electronic control valve 8 connected to the storage device opens. The cylinder 4 extends upward, causing the piston 5 to move upward, discharging the high-temperature liquid from the pressure regulating cylinder 2 into the storage device, thus reducing the pressure inside the high-temperature circulating pump 1. This process is repeated until the pressure inside the high-temperature circulating pump 1 returns to the threshold range. If there is air inside the high-temperature circulating pump 1, the air floats to the top of the exhaust pipe 17. The liquid level in the exhaust pipe 17 carries the sealing ball 18 downward, and the air is discharged through the top of the exhaust pipe 17. After the air is discharged... The liquid level in the exhaust pipe 17 rises with the sealing ball 18, sealing the exhaust pipe 17 again. During the exhaust process, the baffle 19 blocks the splashing liquid. When the high-temperature circulating pump 1 is used for a long time, close both sets of solenoid valves 16 and connect the normally open solenoid valve 15 to the cleaning liquid tank. Then open solenoid valves 11 and 13 and close the normally open solenoid valve 15. The bottom shaft of cylinder 4 retracts upward to discharge the residual liquid in the high-temperature circulating pump 1 into the conveying cylinder 9. The bottom shaft of cylinder 4 extends downward to close solenoid valve 11 and open solenoid valve 15 connected to the recovery tank to discharge the residual liquid into the recovery tank. Repeat the above steps to discharge all the residual liquid in the high-temperature circulating pump 1. Then close the normally open solenoid valve. Connect valve 515 to the cleaning fluid tank, close the electronically controlled valve 515 connected to the recovery tank, and move cylinder 4 to repeat the above steps to discharge the cleaning fluid into the high-temperature circulating pump 1. At the same time, the exhaust mechanism expels the air from the high-temperature circulating pump 1. After the high-temperature circulating pump 1 is filled with cleaning fluid, fill the delivery cylinder 9 with cleaning fluid, close the electronically controlled valve 515 connected to the cleaning fluid tank, and repeatedly extend and retract cylinder 4 to allow the cleaning fluid to repeatedly enter and exit the pressure regulating cylinder 2 and the delivery cylinder 9, thereby causing the cleaning fluid in the high-temperature circulating pump 1 to flow. The cleaning fluid flushes the inside of the high-temperature circulating pump 1, cleaning impurities. After cleaning is completed, open the electronically controlled valve 515 connected to the recovery tank, and move cylinder 4 to discharge the cleaning fluid and impurities from the high-temperature circulating pump 1.This improves the usability of the equipment.

[0035] The high-temperature circulating pump 1, cylinder 4, electric control valve 1 6, electric control valve 2 8, electric control valve 3 11, electric control valve 4 13, electric control valve 5 15 and electric control valve 6 16 of the high-temperature circulating pump pressure control device of this utility model are commercially available. Technical personnel in this industry only need to install and operate them according to the accompanying instruction manual, without requiring any creative work from those skilled in the art.

[0036] The above description is only a preferred embodiment of the present utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made without departing from the technical principles of the present utility model, and these improvements and modifications should also be considered within the protection scope of the present utility model.

Claims

1. A high-temperature circulating pump pressure control device, comprising a high-temperature circulating pump (1), wherein a pressure sensor is disposed inside the high-temperature circulating pump (1); characterized in that, It also includes a pressure regulating mechanism and an exhaust mechanism, both of which are installed on the high-temperature circulating pump (1); The high-temperature circulating pump (1) delivers high-temperature liquid, the pressure regulating mechanism regulates the pressure inside the high-temperature circulating pump (1), and the exhaust mechanism discharges the air inside the high-temperature circulating pump (1).

2. The high-temperature circulating pump pressure control device as described in claim 1, characterized in that, The pressure regulating mechanism includes a pressure regulating cylinder (2), a drain pipe (3), a cylinder (4), a piston (5), an electric control valve (6), a three-way valve (7), two sets of electric control valves (8), and a cleaning mechanism. The top of the high-temperature circulating pump (1) is provided with a drain port, and the front end of the high-temperature circulating pump (1) is provided with an inlet port. The pressure regulating cylinder (2), the cylinder (4), and the cleaning mechanism are all installed on the high-temperature circulating pump (1), and the cleaning mechanism is located below the pressure regulating cylinder (2). The piston (5) is slidably installed inside the pressure regulating cylinder (2). The top end of the cylinder (4) is connected to the bottom end of the piston (5). One end of the drain pipe (3) is installed on the top of the pressure regulating cylinder (2) through the electric control valve (6), and the other end of the drain pipe (3) is connected to the inside of the high-temperature circulating pump (1). One set of ports of the three-way valve (7) is installed on the top of the pressure regulating cylinder (2), and two sets of electric control valves (8) are respectively installed on the other two sets of ports of the three-way valve (7).

3. The high-temperature circulating pump pressure control device as described in claim 2, characterized in that, The cylinder (4) is a two-way cylinder, and both the top and bottom of the cylinder (4) are provided with retractable shafts. The piston (5) is installed on the shaft at the top of the cylinder (4).

4. The high-temperature circulating pump pressure control device as described in claim 3, characterized in that, The cleaning mechanism includes a conveying cylinder (9), piston two (10), electric control valve three (11), conveying pipe (12), electric control valve four (13), three-way two (14), two sets of electric control valve five (15), and two sets of electric control valve six (16). The two sets of electric control valve six (16) are respectively installed on the drain port and inlet port of the high-temperature circulating pump (1). The conveying cylinder (9) is installed on the high-temperature circulating pump (1), and piston two (10) is slidably installed on the conveying cylinder (9). In the cylinder (4), the shaft at the bottom of the cylinder (4) is connected to the top of the piston (10). One set of ports of the electric control valve (11) and the three-way valve (14) are installed at the bottom of the conveying cylinder (9). The electric control valve (11) is connected to the electric control valve (13) through the conveying pipe (12). The electric control valve (13) is installed at the bottom of the high temperature circulating pump (1). Two sets of electric control valves (15) are installed on the other two sets of ports of the three-way valve (14).

5. The high-temperature circulating pump pressure control device as described in claim 1, characterized in that, The exhaust mechanism includes an exhaust pipe (17), a sealing ball (18), and a baffle (19). The exhaust pipe (17) is installed on the top of the high-temperature circulating pump (1), the sealing ball (18) is located in the exhaust pipe (17), and the baffle (19) is installed on the top of the exhaust pipe (17).

6. The high-temperature circulating pump pressure control device as described in claim 5, characterized in that, The top of the exhaust pipe (17) is a conical cavity structure.

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