Pump body structure for supercritical fluid extraction equipment

Abstract

The utility model relates to the technical field of supercritical fluid conveying pump bodies, and discloses a pump body structure for supercritical fluid extraction equipment, which comprises a base, a pulley is fixedly connected to the lower end of the base, a lifting seat is arranged at the upper end of the base, and an air cylinder is fixedly connected to the upper end of the lifting seat. According to the pump body structure for the supercritical fluid extraction equipment, the air cylinder is arranged, when the first conveying pump and the second conveying pump need to be overhauled and maintained, the air cylinder is started to increase the stroke, the lifting base is driven to ascend, maintenance by workers is facilitated, and meanwhile the convenience of connection between the pump body structure and the supercritical fluid extraction equipment is improved; the first three-way ball valve and the second three-way ball valve are both T-shaped three-way ball valves, through control of the ball valves, the first conveying pump and the second conveying pump can be used independently and can also conduct conveying at the same time, the conveying efficiency is improved, the cleaning pump and the draught fan are started, the ball valves are matched, and the first conveying pump or the second conveying pump can be cleaned on the premise that conveying of extraction equipment is not affected; the practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of supercritical fluid delivery pump bodies, and specifically relates to a pump body structure for a supercritical fluid extraction device. Background Technique

[0002] Supercritical fluid extraction is an efficient and environmentally friendly separation and extraction technology, which is widely used in the fields of food, medicine, natural products, etc. Supercritical fluid extraction utilizes the characteristics of supercritical fluids for separation and extraction. In supercritical fluid extraction equipment, in order to ensure the efficient delivery of supercritical fluids in the system, a pump body structure is required.

[0003] Chinese Utility Model Patent Publication No.: CN 220248281 U, discloses: a pump body structure for a supercritical extraction device. In this pump body structure for a supercritical extraction device, by setting a water pump, the water pump is connected to the supercritical fluid delivery pump body through a second connecting pipe, an electric gate valve three, and a four-way pipe. In this way, the cleaning liquid and clean water can be delivered by the water pump to clean the inside of the supercritical fluid delivery pump body. At the same time, a pressure pump is also set. After the cleaning is completed, the electric gate valve three is closed, and then the pressure pump is started. The pressure pump quickly delivers air to the supercritical fluid delivery pump body through the first connecting pipe and another four-way pipe. The fast-flowing air blows the residual liquid in the supercritical fluid delivery pump body, so that the residual liquid in the supercritical fluid delivery pump body is blown into the collection bin, thereby preventing the supercritical fluid delivery pump body from leaving residual liquid and ensuring that the final quality of the supercritical fluid is not affected. However, in this pump body structure for a supercritical extraction device, only a single supercritical fluid delivery pump body is provided. When cleaning and maintaining the supercritical fluid delivery pump body, the supercritical fluid extraction device will stop using, which affects the working efficiency. Summary of the Invention

[0004] The technical problem to be solved by the utility model is to provide a pump body structure for a supercritical fluid extraction device, which can effectively solve the problems in the prior art.

[0005] The technical solution adopted by the utility model is as follows: a pump body structure for a supercritical fluid extraction device, including a base, a pulley is fixedly connected to the lower end of the base, a lifting seat is arranged at the upper end of the base, a cylinder is fixedly connected to the upper end of the lifting seat, a bracket is fixedly connected to the upper end of the lifting seat, a liquid inlet pipe is arranged above the lifting seat, a three-way ball valve I is fixedly connected to the output end of the liquid inlet pipe, a left branch pipe I is fixedly connected to the left outlet of the three-way ball valve I, the input end of a delivery pump I is fixedly connected to the rear end of the left branch pipe I, a left branch pipe II is fixedly connected to the output end of the delivery pump I, a right branch pipe I is fixedly connected to the right outlet of the three-way ball valve I, the input end of a delivery pump II is fixedly connected to the rear end of the right branch pipe I, a right branch pipe II is fixedly connected to the output end of the delivery pump II, a three-way ball valve II is fixedly connected between the left branch pipe II and the right branch pipe II, a liquid outlet pipe is fixedly connected to the rear outlet of the three-way ball valve II, a cleaning liquid inlet pipe is fixedly connected to the lower ends of the left branch pipe I and the right branch pipe I, a liquid inlet valve I is arranged at one end of the cleaning liquid inlet pipe, a liquid inlet valve II is arranged at the other end of the cleaning liquid inlet pipe, a blower and a cleaning pump are fixedly connected to the upper end of the lifting seat, a connecting pipe I is fixedly connected to the output end of the blower, a connecting pipe II is fixedly connected to the output end of the cleaning pump, a cleaning liquid outlet pipe is fixedly connected to the lower ends of the left branch pipe II and the right branch pipe II, a liquid discharge valve I is arranged at one end of the cleaning liquid outlet pipe, a liquid discharge valve II is arranged at the other end of the cleaning liquid outlet pipe, a collection box is fixedly connected to the upper end of the lifting seat, and a connecting pipe III is fixedly connected to the rear end of the collection box.

[0006] Preferably, the output end of the cylinder is fixedly connected to the base, and the bracket is fixedly connected to the liquid inlet pipe, the left branch pipe I, the right branch pipe I, the left branch pipe II, the right branch pipe II and the liquid outlet pipe.

[0007] Through the above technical solution, a bracket is provided to make the pipeline structure operate stably.

[0008] Preferably, both the cleaning liquid inlet pipe and the cleaning liquid outlet pipe are in a "U" - shaped structure, and the connecting pipe I and the connecting pipe II are both communicated with the cleaning liquid inlet pipe.

[0009] Through the above technical solution, a cleaning liquid inlet pipe and a cleaning liquid outlet pipe are provided. When cleaning the first transfer pump, control the first three-way ball valve to close the first left branch pipe and keep the liquid inlet pipe connected to the first right branch pipe. Control the second three-way ball valve to close the second left branch pipe and keep the second right branch pipe connected to the liquid outlet pipe. Close the first liquid inlet valve and the first drain valve, open the second liquid inlet valve and the second drain valve, start the cleaning pump to pump the cleaning liquid in, and clean the first transfer pump through the cleaning liquid inlet pipe, the second connecting pipe, and the first left branch pipe. The dirt in the first transfer pump enters the collection box through the second left branch pipe, the cleaning liquid outlet pipe, and the third connecting pipe for collection. Then start the fan to generate air flow to clean the first transfer pump with gas. When cleaning the second transfer pump, control the first three-way ball valve to close the first right branch pipe and keep the liquid inlet pipe connected to the first left branch pipe. Control the second three-way ball valve to close the second right branch pipe and keep the second left branch pipe connected to the liquid outlet pipe. Close the second liquid inlet valve and the second drain valve, open the first liquid inlet valve and the first drain valve, and start the cleaning pump and the fan in sequence for cleaning. It is possible to clean the first transfer pump or the second transfer pump without affecting the transportation of the extraction equipment, which is very practical.

[0010] Preferably, the third connecting pipe is interconnected with the cleaning liquid outlet pipe, and the first transfer pump and the second transfer pump have the same model and specifications.

[0011] Through the above technical solution, the first transfer pump and the second transfer pump are provided. The first transfer pump and the second transfer pump can be used separately or for transportation simultaneously to improve the transportation efficiency, and can be controlled according to requirements to improve the usage efficiency.

[0012] Preferably, both the first three-way ball valve and the second three-way ball valve are T-shaped three-way ball valves.

[0013] Through the above technical solution, both the first three-way ball valve and the second three-way ball valve are T-shaped three-way ball valves, and it is more convenient to control when switching the usage modes of the first transfer pump and the second transfer pump.

[0014] Preferably, six identical pulleys are provided, and the pulleys are internally provided with a self-locking structure.

[0015] Through the above technical solution, pulleys are provided, and the pump body structure can be moved through the pulleys, which is convenient for transportation and deployment.

[0016] Preferably, four identical cylinders are provided, and the first left branch pipe, the second left branch pipe, the first right branch pipe, and the second right branch pipe are symmetric with each other.

[0017] Through the above technical solution, cylinders are provided. When it is necessary to repair and maintain the first transfer pump and the second transfer pump, start the cylinders to increase the stroke and drive the lifting seat to rise, which is convenient for the staff to maintain. At the same time, the convenience of connecting the pump body structure to the supercritical fluid extraction equipment is improved.

[0018] Compared with the prior art, the present utility model provides a pump body structure for a supercritical fluid extraction device, which has the following beneficial effects:

[0019] 1. For the pump body structure of the supercritical fluid extraction device, a cleaning inlet pipe and a cleaning outlet pipe are provided. When cleaning the first transfer pump, control the first three-way ball valve to close the left first branch pipe, keep the inlet pipe connected to the right first branch pipe, control the second three-way ball valve to close the left second branch pipe, keep the right second branch pipe connected to the outlet pipe, close the first inlet valve and the first drain valve, open the second inlet valve and the second drain valve, start the cleaning pump to pump the cleaning liquid in. The cleaning liquid enters the first transfer pump through the cleaning inlet pipe, the second connecting pipe, and the left first branch pipe for cleaning. The dirt in the first transfer pump enters the collection box through the left second branch pipe, the cleaning outlet pipe, and the third connecting pipe for collection. Then start the fan to generate air flow to perform gas cleaning on the first transfer pump. When cleaning the second transfer pump, control the first three-way ball valve to close the right first branch pipe, keep the inlet pipe connected to the left first branch pipe, control the second three-way ball valve to close the right second branch pipe, keep the left second branch pipe connected to the outlet pipe, close the second inlet valve and the second drain valve, open the first inlet valve and the first drain valve, and start the cleaning pump and the fan in sequence for cleaning. It is possible to clean the first transfer pump or the second transfer pump without affecting the transportation of the extraction device, which is very practical;

[0020] 2. For the pump body structure of the supercritical fluid extraction device, both the first three-way ball valve and the second three-way ball valve are T-shaped three-way ball valves. Through the control of the ball valves, the first transfer pump and the second transfer pump can be used individually or for transportation simultaneously, improving the transportation efficiency and can be controlled according to requirements, improving the usage efficiency;

[0021] 3. For the pump body structure of the supercritical fluid extraction device, a cylinder is provided. When it is necessary to overhaul and maintain the first transfer pump and the second transfer pump, start the cylinder to increase the stroke and drive the lifting seat to rise, which is convenient for the staff to maintain and at the same time improves the convenience of connecting the pump body structure to the supercritical fluid extraction device. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 Schematic three-dimensional structure of the present utility model Figure 1 ;

[0023] Figure 2 Schematic three-dimensional structure of the present utility model Figure 2 ;

[0024] Figure 3 Schematic structural diagram of the lifting state of the lifting seat of the present utility model;

[0025] Figure 4 Schematic enlarged structure of the inlet pipe and the outlet pipe of the present utility model Figure 1 ;

[0026] Figure 5Schematic diagram of the enlarged structure of the liquid inlet pipe and liquid outlet pipe of the present utility model Figure 2 。

[0027] Among them: 1. Base; 2. Pulley; 3. Lifting seat; 4. Cylinder; 5. Bracket; 6. Liquid inlet pipe; 7. Three-way ball valve I; 8. Left branch pipe I; 9. Transfer pump I; 10. Left branch pipe II; 11. Right branch pipe I; 12. Transfer pump II; 13. Right branch pipe II; 14. Liquid outlet pipe; 15. Cleaning liquid inlet pipe; 16. Liquid inlet valve I; 17. Liquid inlet valve II; 18. Fan; 19. Connecting pipe I; 20. Cleaning pump; 21. Connecting pipe II; 22. Cleaning liquid outlet pipe; 23. Drain valve I; 24. Drain valve II; 25. Collection box; 26. Connecting pipe III; 27. Three-way ball valve II. Specific embodiments

[0028] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0029] Embodiment 1: As Figures 1-5As shown in the figure, a pump body structure for a supercritical fluid extraction device provided by the utility model includes a base 1. A pulley 2 is fixedly connected to the lower end of the base 1. An elevating seat 3 is arranged on the upper end of the base 1. A cylinder 4 is fixedly connected to the upper end of the elevating seat 3. A bracket 5 is fixedly connected to the upper end of the elevating seat 3. A liquid inlet pipe 6 is arranged above the elevating seat 3. The output end of the liquid inlet pipe 6 is fixedly connected to a three-way ball valve one 7. The left outlet of the three-way ball valve one 7 is fixedly connected to a left branch pipe one 8. The rear end of the left branch pipe one 8 is fixedly connected to the input end of a delivery pump one 9. The output end of the delivery pump one 9 is fixedly connected to a left branch pipe two 10. The right outlet of the three-way ball valve one 7 is fixedly connected to a right branch pipe one 11. The rear end of the right branch pipe one 11 is fixedly connected to the input end of a delivery pump two 12. The output end of the delivery pump two 12 is fixedly connected to a right branch pipe two 13. A three-way ball valve two 27 is fixedly connected between the left branch pipe two 10 and the right branch pipe two 13. The rear outlet of the three-way ball valve two 27 is fixedly connected to a liquid outlet pipe 14. The lower ends of the left branch pipe one 8 and the right branch pipe one 11 are fixedly connected to a cleaning liquid inlet pipe 15. One end of the cleaning liquid inlet pipe 15 is provided with a liquid inlet valve one 16. The other end of the cleaning liquid inlet pipe 15 is provided with a liquid inlet valve two 17. A fan 18 and a cleaning pump 20 are fixedly connected to the upper end of the elevating seat 3. The output end of the fan 18 is fixedly connected to a connecting pipe one 19. The output end of the cleaning pump 20 is fixedly connected to a connecting pipe two 21. The lower ends of the left branch pipe two 10 and the right branch pipe two 13 are fixedly connected to a cleaning liquid outlet pipe 22. One end of the cleaning liquid outlet pipe 22 is provided with a liquid discharge valve one 23. The other end of the cleaning liquid outlet pipe 22 is provided with a liquid discharge valve two 24. A collection box 25 is fixedly connected to the upper end of the elevating seat 3. A connecting pipe three 26 is fixedly connected to the rear end of the collection box 25.

[0030] Specifically, the output end of the cylinder 4 is fixedly connected to the base 1. The bracket 5 is fixedly connected to the liquid inlet pipe 6, the left branch pipe one 8, the right branch pipe one 11, the left branch pipe two 10, the right branch pipe two 13 and the liquid outlet pipe 14. The advantage is that the bracket 5 is provided to make the pipeline structure operate stably.

[0031] Specifically, both the cleaning liquid inlet pipe 15 and the cleaning liquid outlet pipe 22 are in a "U" - shaped structure, and the first connecting pipe 19 and the second connecting pipe 21 are both in communication with the cleaning liquid inlet pipe 15. The advantage is that the cleaning liquid inlet pipe 15 and the cleaning liquid outlet pipe 22 are provided. When cleaning the first transfer pump 9, control the first three - way ball valve 7 to close the left first branch pipe 8, keep the liquid inlet pipe 6 in communication with the right first branch pipe 11, control the second three - way ball valve 27 to close the left second branch pipe 10, keep the right second branch pipe 13 in communication with the liquid outlet pipe 14, close the first liquid inlet valve 16 and the first liquid discharge valve 23, open the second liquid inlet valve 17 and the second liquid discharge valve 24, start the cleaning pump 20 to pump the cleaning liquid in. The cleaning liquid enters the first transfer pump 9 through the cleaning liquid inlet pipe 15, the second connecting pipe 21, and the left first branch pipe 8. The dirt in the first transfer pump 9 enters the collection box 25 through the left second branch pipe 10, the cleaning liquid outlet pipe 22, and the third connecting pipe 26 for collection. Then start the blower 18 to generate air flow to perform gas cleaning on the first transfer pump 9. When cleaning the second transfer pump 12, control the first three - way ball valve 7 to close the right first branch pipe 11, keep the liquid inlet pipe 6 in communication with the left first branch pipe 8, control the second three - way ball valve 27 to close the right second branch pipe 13, keep the left second branch pipe 10 in communication with the liquid outlet pipe 14, close the second liquid inlet valve 17 and the second liquid discharge valve 24, open the first liquid inlet valve 16 and the first liquid discharge valve 23, and start the cleaning pump 20 and the blower 18 in sequence for cleaning. It is possible to clean the first transfer pump 9 or the second transfer pump 12 without affecting the transportation of the extraction equipment, which is very practical.

[0032] Specifically, the third connecting pipe 26 is in communication with the cleaning liquid outlet pipe 22, and the first transfer pump 9 and the second transfer pump 12 have the same model and specifications. The advantage is that the first transfer pump 9 and the second transfer pump 12 are provided. The first transfer pump 9 and the second transfer pump 12 can be used separately or simultaneously for transportation, improving the transportation efficiency, and can be controlled according to requirements, improving the usage efficiency.

[0033] Embodiment 2: As Figures 2-5 shown, as an improvement over the previous embodiment.

[0034] Specifically, both the first three - way ball valve 7 and the second three - way ball valve 27 are T - type three - way ball valves. The advantage is that both the first three - way ball valve 7 and the second three - way ball valve 27 are T - type three - way ball valves, making it more convenient to switch the usage modes of the first transfer pump 9 and the second transfer pump 12.

[0035] Specifically, six identical pulleys 2 are provided, and the pulleys 2 are internally provided with a self - locking structure. The advantage is that the pulleys 2 are provided, and the pump body structure can be moved through the pulleys 2, which is convenient for transportation and deployment.

[0036] Specifically, there are four identical cylinders 4. The left branch pipe one 8, the left branch pipe two 10 are symmetric with the right branch pipe one 11 and the right branch pipe two 13. The advantage is that the cylinder 4 is provided. When maintenance is required for the transfer pump one 9 and the transfer pump two 12, the cylinder 4 is started to increase the stroke, driving the lifting seat 3 to rise, which is convenient for the staff to maintain. At the same time, the convenience of connecting the pump body structure to the supercritical fluid extraction equipment is improved.

[0037] Working principle: During use, by controlling the three-way ball valve one 7 and the three-way ball valve two 27, the transfer pump one 9 and the transfer pump two 12 can be used individually or for conveying simultaneously, improving the conveying efficiency and can be controlled according to requirements to improve the usage efficiency. When maintenance is required for the transfer pump one 9 and the transfer pump two 12, the cylinder 4 is started to increase the stroke, driving the lifting seat 3 to rise, which is convenient for the staff to maintain. At the same time, the convenience of connecting the pump body structure to the supercritical fluid extraction equipment is improved. When cleaning the transfer pump one 9, control the three-way ball valve one 7 to close the left branch pipe one 8, keep the liquid inlet pipe 6 connected to the right branch pipe one 11, control the three-way ball valve two 27 to close the left branch pipe two 10, keep the right branch pipe two 13 connected to the liquid outlet pipe 14, close the liquid inlet valve one 16 and the drain valve one 23, open the liquid inlet valve two 17 and the drain valve two 24, start the cleaning pump 20 to pump the cleaning liquid in, and clean the transfer pump one 9 after passing through the cleaning liquid inlet pipe 15, the connecting pipe two 21, and the left branch pipe one 8. The dirt in the transfer pump one 9 enters the collection box 25 through the left branch pipe two 10, the cleaning liquid outlet pipe 22, and the connecting pipe three 26 for collection. Then start the fan 18 to generate air flow to clean the transfer pump one 9 with gas. When cleaning the transfer pump two 12, control the three-way ball valve one 7 to close the right branch pipe one 11, keep the liquid inlet pipe 6 connected to the left branch pipe one 8, control the three-way ball valve two 27 to close the right branch pipe two 13, keep the left branch pipe two 10 connected to the liquid outlet pipe 14, close the liquid inlet valve two 17 and the drain valve two 24, open the liquid inlet valve one 16 and the drain valve one 23, and start the cleaning pump 20 and the fan 18 in sequence for cleaning. It is possible to clean the transfer pump one 9 or the transfer pump two 12 without affecting the conveying of the extraction equipment, which is very practical.

[0038] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions, and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pump structure for a supercritical fluid extraction device, comprising a base (1), characterized in that: The lower end of the base (1) is fixedly connected to a pulley (2), the upper end of the base (1) is provided with a lifting seat (3), the upper end of the lifting seat (3) is fixedly connected to a cylinder (4), the upper end of the lifting seat (3) is fixedly connected to a bracket (5), a liquid inlet pipe (6) is provided above the lifting seat (3), the output end of the liquid inlet pipe (6) is fixedly connected to a three-way ball valve (7), the left outlet of the three-way ball valve (7) is fixedly connected to a left branch pipe (8), the rear end of the left branch pipe (8) is fixedly connected to the left branch pipe (8), and the rear end of the left branch pipe (8) is fixedly connected to the left branch pipe (8). The first (9) delivery pump is fixedly connected to the input end of the first (9) delivery pump, the output end of the first (9) delivery pump is fixedly connected to the second left branch pipe (10), the right outlet of the first (7) three-way ball valve is fixedly connected to the first right branch pipe (11), the rear end of the first right branch pipe (11) is fixedly connected to the input end of the second (12) delivery pump, the output end of the second (12) delivery pump is fixedly connected to the second right branch pipe (13), the second (27) three-way ball valve is fixedly connected between the second left branch pipe (10) and the second right branch pipe (13), the three-way The rear outlet of the second ball valve (27) is fixedly connected to a liquid outlet pipe (14), the lower ends of the left branch pipe (8) and the right branch pipe (11) are fixedly connected to a cleaning liquid inlet pipe (15), one end of the cleaning liquid inlet pipe (15) is provided with a liquid inlet valve (16), and the other end of the cleaning liquid inlet pipe (15) is provided with a second liquid inlet valve (17), the upper end of the lifting seat (3) is fixedly connected to a fan (18) and a cleaning pump (20), and the output end of the fan (18) is fixedly connected to a connecting pipe (19 ), the output end of the cleaning pump (20) is fixedly connected to a connecting pipe 2 (21), the lower ends of the left branch pipe 2 (10) and the right branch pipe 2 (13) are fixedly connected to a cleaning liquid outlet pipe (22), one end of the cleaning liquid outlet pipe (22) is provided with a drain valve 1 (23), the other end of the cleaning liquid outlet pipe (22) is provided with a drain valve 2 (24), the upper end of the lifting seat (3) is fixedly connected to a collecting box (25), and the rear end of the collecting box (25) is fixedly connected to a connecting pipe 3 (26).

2. The pump structure for supercritical fluid extraction equipment according to claim 1, characterized in that: The output end of the cylinder (4) is fixedly connected to the base (1), and the bracket (5) is fixedly connected to the liquid inlet pipe (6), the left branch pipe 1 (8), the right branch pipe 1 (11), the left branch pipe 2 (10), the right branch pipe 2 (13) and the liquid outlet pipe (14).

3. The pump structure for supercritical fluid extraction equipment according to claim 1, characterized in that: The cleaning liquid inlet pipe (15) and the cleaning liquid outlet pipe (22) are both in a U-shaped structure, and the connecting pipe 1 (19) and the connecting pipe 2 (21) are both in communication with the cleaning liquid inlet pipe (15).

4. The pump structure for supercritical fluid extraction equipment according to claim 1, characterized in that: The connecting pipe three (26) is connected to the cleaning liquid outlet pipe (22), and the delivery pump one (9) and the delivery pump two (12) are of the same model and specification.

5. The pump structure for supercritical fluid extraction equipment according to claim 1, characterized in that: The three-way ball valve one (7) and the three-way ball valve two (27) are both T-type three-way ball valves.

6. The pump structure for supercritical fluid extraction equipment according to claim 1, characterized in that: The pulleys (2) are provided with six identical ones, and the pulleys (2) have a built-in self-locking structure.

7. The pump structure for supercritical fluid extraction equipment according to claim 1, characterized in that: The cylinder (4) is provided with four identical ones, and the left branch pipe one (8), the left branch pipe two (10) and the right branch pipe one (11), the right branch pipe two (13) are symmetrical to each other.

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