Liquid metering tank capable of improving metering accuracy

Abstract

The utility model relates to a liquid metering tank capable of improving metering accuracy, which belongs to the technical field of liquid metering tanks and comprises a liquid metering tank body, a measuring cylinder is arranged at the bottom of the liquid metering tank body, a pressing piston is slidably mounted in the measuring cylinder, and a screw is rotatably connected into the measuring cylinder. The beneficial effects of the utility model lie in that when the stored liquid needs to be measured, the pressing piston can be driven to slide on the inner wall of the measuring cylinder through the rotation of the screw rod, and the pressing piston can be limited importantly through the cooperative use of the transmission rod, and meanwhile, the measurement accuracy is improved. The movement of the pressing piston certainly pushes the transmission rod and the pointer to move, a worker can measure and calculate the volume of the taken liquid according to the scales on the graduated scale, and compared with the use of a liquid level sensor, the mode is slightly influenced by factors such as temperature and pressure, so that the metering accuracy can be improved, and the deviation of a metering result can be reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid metering tanks, in particular to a liquid metering tank for improving metering accuracy. Background Art

[0002] The structural forms of metering tanks are divided into: vertical tanks with upper and lower heads, vertical tanks with upper head and lower conical bottom, vertical tanks with flat cover and lower conical bottom, vertical tanks with flat bottom and flat cover, horizontal tanks with double heads, and horizontal metering tanks with flat heads. This product is widely used in industries such as chemical engineering, chemistry, petroleum, metallurgy, pharmaceuticals, metallurgy, printing and dyeing, salt production, and chemical fertilizers. It uses detection instruments such as liquid level gauges, ultrasonic detectors, and pressure gauges to measure the height difference of materials in the container, calculates the storage volume of materials, and according to the production process and technical requirements, obtains the high and low level difference signals of materials from the detection instruments, and automatically controls the material inlet and outlet actuating components through signal amplification to effectively measure and control the materials. Its characteristics are simple structure, convenient operation, and can achieve automatic control.

[0003] Existing liquid metering tanks usually monitor the liquid level through built-in sensors to achieve metering. However, these sensors may be affected by environmental factors such as temperature and pressure, resulting in deviation of metering results. Moreover, traditional liquid metering tanks may have dead corners or areas that are not easy to clean in the structural design, affecting the metering accuracy and potentially increasing the difficulty of cleaning and maintenance. Summary of the Utility Model

[0004] In view of the above problems existing in the prior art, the main purpose of the present utility model is to provide a liquid metering tank for improving metering accuracy.

[0005] The technical solution of the present utility model is as follows: A liquid metering tank for improving metering accuracy, including a liquid metering tank body. A measuring cylinder is provided at the bottom of the liquid metering tank body. A pressing piston is slidably installed inside the measuring cylinder. A screw rod is rotatably connected inside the measuring cylinder. The screw rod is threadedly connected to the pressing piston. One side of the pressing piston is fixedly connected to a transmission rod. The transmission rod is slidably connected inside the measuring cylinder. The end of the transmission rod away from the pressing piston is fixedly connected to a pointer. A scale is fixedly connected to the outside of the measuring cylinder, and the pointer points to the scale.

[0006] By adopting the above technical solution, through the rotation of the screw rod, the pressing piston is driven to slide on the inner wall of the measuring cylinder, and through the cooperation of the transmission rod, an important limiting effect can be exerted on the pressing piston. At the same time, the movement of the pressing piston will inevitably push the transmission rod and the pointer to move. The staff can calculate the volume of the liquid taken out according to the scale on the scale.

[0007] As a preferred embodiment, a cleaning mechanism is provided inside the liquid metering tank body. The cleaning mechanism includes a main shaft rotatably installed inside the liquid metering tank body. On both sides of the bottom of the main shaft, there are fixedly connected bottom cleaning frames. The outer sides of the bottom cleaning frames are in contact with the inner wall of the liquid metering tank body. Above the bottom cleaning frames and on the outer side of the main shaft, there are fixedly connected two support bars. Between the two support bars, there is fixedly connected a scraper. The scrapers are all in contact with the inner wall of the liquid metering tank body. On both sides of the main shaft, there are fixedly connected fixed shafts. On the outer sides of the fixed shafts, there are equidistantly fixedly connected stirring paddles.

[0008] By adopting the above technical solution, through the rotation of the main shaft, the rotation of the support bars, the bottom cleaning frames and the stirring paddles can be driven. The use of the bottom cleaning frames can scrape off the liquid adhering to the bottom end of the inner wall of the liquid metering tank body, and the scrapers scrape off the liquid on the side wall of the liquid metering tank body. Through the combined use of the bottom cleaning frames and the scrapers, dead corners or areas that are not easy to clean are avoided in the structural design.

[0009] As a preferred embodiment, a matching mechanism is provided on the outer side of the measuring cylinder. The matching mechanism includes a discharge pipe fixedly connected to one side of the measuring cylinder, and a feed pipe fixedly connected to the side of the measuring cylinder away from the pointer. The end of the feed pipe away from the measuring cylinder extends into the liquid metering tank body.

[0010] By adopting the above technical solution, through the setting of the discharge pipe, the stored liquid in the measuring cylinder can be transported to an external container, and through the setting of the feed pipe, the liquid in the liquid metering tank body can be transported to the measuring cylinder.

[0011] As a preferred embodiment, the matching mechanism further includes an electromagnetic valve fixedly installed inside the feed pipe, and one-way valves are fixedly installed inside both the discharge pipe and the feed pipe.

[0012] By adopting the above technical solution, through the setting of the one-way valve in the discharge pipe, the liquid in the external container can be prevented from flowing back into the measuring cylinder, thereby ensuring the normal operation of the measuring structure.

[0013] As a preferred embodiment, a servo motor 1 is fixedly installed on the top of the liquid metering tank body. The output shaft of the servo motor 1 extends into the liquid metering tank body and is fixedly connected to the main shaft.

[0014] By adopting the above technical solution, through the rotation of the output shaft of the servo motor 1, the main shaft can be driven to rotate.

[0015] As a preferred embodiment, a second servo motor is fixedly installed on the side of the measuring cylinder away from the discharge pipe, and the output shaft of the second servo motor extends into the interior of the measuring cylinder and is fixedly connected to the screw.

[0016] By adopting the above technical solution, the rotation of the output shaft of the second servo motor can drive the screw to rotate, thereby realizing the transmission of power.

[0017] As a preferred embodiment, a controller is fixedly installed on the outer side of the liquid metering tank body, a temperature sensor is fixedly installed at the top of the inner wall of the liquid metering tank body, and the first servo motor, the temperature sensor, the solenoid valve and the second servo motor are all electrically connected to the controller.

[0018] By adopting the above technical solution, through the setting of the controller, the start and stop of the first servo motor, the temperature sensor, the solenoid valve and the second servo motor can be controlled.

[0019] As a preferred embodiment, a feed inlet is fixedly connected to the top of the liquid metering tank body, support feet are fixedly connected to the four corners of the bottom of the liquid metering tank body, and a viewing window is arranged on the outer side of the measuring cylinder.

[0020] By adopting the above technical solution, through the setting of the viewing window, it is convenient for the staff to observe the measuring liquid in the measuring cylinder.

[0021] Compared with the prior art, the advantages and positive effects of the present utility model are as follows.

[0022] 1. In the present utility model, when it is necessary to measure the stored liquid, the rotation of the screw can drive the pressing piston to slide on the inner wall of the measuring cylinder, and through the cooperation of the transmission rod, an important limiting effect can be exerted on the pressing piston. At the same time, the movement of the pressing piston will surely push the transmission rod and the pointer to move, and the staff can calculate the volume of the taken-out liquid according to the scale on the scale. Compared with the use of the liquid level sensor, this method is less affected by factors such as temperature and pressure, thereby improving the metering accuracy and reducing the deviation of the metering result.

[0023] 2. In the present utility model, the rotation of the main shaft can drive the rotation of the support bar, the bottom cleaning frame and the turning paddle. The use of the bottom cleaning frame can scrape off the liquid adhering to the bottom end of the inner wall of the liquid metering tank body, and the scraper can scrape off the liquid on the side wall of the liquid metering tank body. Through the cooperation of the bottom cleaning frame and the scraper, there are no dead corners or areas that are not easy to clean in the structural design. On the one hand, it can reduce liquid adhesion and improve liquid utilization rate. On the other hand, it can improve the metering accuracy and may reduce the difficulty of cleaning and maintenance. Description of the Drawings

[0024] Figure 1 The present utility model provides an overall three-dimensional view of a liquid metering tank for improving metering accuracy;

[0025] Figure 2 The present utility model provides a schematic diagram of the internal structure of a liquid metering tank for improving metering accuracy;

[0026] Figure 3 The present utility model provides a half-sectional view of a liquid metering tank for improving metering accuracy;

[0027] Figure 4 The present utility model provides a Figure 2 magnified view of part A in a liquid metering tank for improving metering accuracy.

[0028] Legend: 1. Liquid metering tank body; 2. Measuring cylinder; 3. Visual window; 4. Scraper; 5. Servo motor 1; 6. Controller; 7. Stirring paddle; 8. Main shaft; 9. Bottom cleaning frame; 10. Temperature sensor; 11. Discharge pipe; 12. Feed pipe; 13. Check valve; 14. Pressing piston; 15. Scale; 16. Transmission rod; 17. Screw; 18. Servo motor 2; 19. Pointer; 20. Solenoid valve; 21. Support bar. Detailed implementation manners

[0029] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0030] Refer to Figures 1-4, A liquid metering tank for improving metering accuracy, comprising a liquid metering tank body 1. A measuring cylinder 2 is provided at the bottom of the liquid metering tank body 1. A pressing piston 14 is slidably installed inside the measuring cylinder 2. A screw rod 17 is rotatably connected inside the measuring cylinder 2. The screw rod 17 is threadedly connected to the pressing piston 14. One side of the pressing piston 14 is fixedly connected to a transmission rod 16. The transmission rod 16 is slidably connected inside the measuring cylinder 2. The end of the transmission rod 16 away from the pressing piston 14 is fixedly connected to a pointer 19. A scale 15 is fixedly connected to the outside of the measuring cylinder 2. The pointer 19 points to the scale 15. When it is necessary to measure the stored liquid, the rotation of the screw rod 17 can drive the pressing piston 14 to slide on the inner wall of the measuring cylinder 2. And through the cooperation of the transmission rod 16, it can play an important limiting role for the pressing piston 14. At the same time, the movement of the pressing piston 14 will surely push the transmission rod 16 and the pointer 19 to move. The staff can calculate the volume of the taken-out liquid according to the scale on the scale 15. Compared with the use of a liquid level sensor, this method is less affected by factors such as temperature and pressure, thereby being able to improve metering accuracy and reduce the deviation of metering results.

[0031] Refer to Figure 3 , A cleaning mechanism is provided inside the liquid metering tank body 1. The cleaning mechanism includes a main shaft 8 rotatably installed inside the liquid metering tank body 1. Both sides of the bottom of the main shaft 8 are fixedly connected with bottom cleaning frames 9. The outside of the bottom cleaning frames 9 is in contact with the inner wall of the liquid metering tank body 1. Two support bars 21 are fixedly connected to the outside of the main shaft 8 and above the bottom cleaning frames 9. A scraper 4 is fixedly connected between the two support bars 21. The scraper 4 is in contact with the inner wall of the liquid metering tank body 1. Fixed shafts are fixedly connected to both sides of the main shaft 8. Stirring paddles 7 are fixedly connected to the outside of the fixed shafts at equal intervals. Through the rotation of the main shaft 8, it can drive the rotation of the support bars 21, the bottom cleaning frames 9 and the stirring paddles 7. The use of the bottom cleaning frames 9 can scrape off the liquid adhering to the bottom end of the inner wall of the liquid metering tank body 1, and the scraper 4 scrapes off the liquid on the side wall of the liquid metering tank body 1. Through the cooperation of the bottom cleaning frames 9 and the scraper 4, there are no dead corners or areas that are not easy to clean in the structural design. On the one hand, it can reduce liquid adhesion and improve liquid utilization rate. On the other hand, it can improve metering accuracy and may reduce the difficulty of cleaning and maintenance.

[0032] Refer to Figure 4, a matching mechanism is provided on the outer side of the measuring cylinder 2. The matching mechanism includes a discharge pipe 11 fixedly connected to one side of the measuring cylinder 2. A feed pipe 12 is fixedly connected to the side of the measuring cylinder 2 away from the pointer 19. One end of the feed pipe 12 away from the measuring cylinder 2 extends into the interior of the liquid metering tank body 1. Through the setting of the discharge pipe 11, the stored liquid in the measuring cylinder 2 can be transported to an external container, and through the setting of the feed pipe 12, the liquid in the liquid metering tank body 1 can be transported to the measuring cylinder 2, and the measuring cylinder 2 measures the volume of the used liquid.

[0033] Refer to Figure 2 , the matching mechanism further includes a solenoid valve 20 fixedly installed inside the feed pipe 12. Check valves 13 are fixedly installed inside both the discharge pipe 11 and the feed pipe 12. Through the setting of the check valve 13 in the feed pipe 12, the liquid in the measuring cylinder 2 can be prevented from flowing back into the interior of the liquid metering tank body 1. Through the setting of the check valve 13 in the discharge pipe 11, the liquid in the external container can be prevented from flowing back into the interior of the measuring cylinder 2, thereby ensuring the normal operation of the measuring structure.

[0034] Refer to Figure 2 , a servo motor 5 is fixedly installed on the top of the liquid metering tank body 1. The output shaft of the servo motor 5 extends into the interior of the liquid metering tank body 1 and is fixedly connected to the main shaft 8. By rotating the output shaft of the servo motor 5, the main shaft 8 can be driven to rotate.

[0035] Refer to Figure 4 , a servo motor 18 is fixedly installed on the side of the measuring cylinder 2 away from the discharge pipe 11. The output shaft of the servo motor 18 extends into the interior of the measuring cylinder 2 and is fixedly connected to the screw 17. By rotating the output shaft of the servo motor 18, the screw 17 can be driven to rotate, thereby achieving the transmission of power.

[0036] Refer to Figure 2 , a controller 6 is fixedly installed on the outer side of the liquid metering tank body 1. A temperature sensor 10 is fixedly installed at the top end of the inner wall of the liquid metering tank body 1. The servo motor 5, the temperature sensor 10, the solenoid valve 20, and the servo motor 18 are all electrically connected to the controller 6. Through the setting of the controller 6, the start and stop of the servo motor 5, the temperature sensor 10, the solenoid valve 20, and the servo motor 18 can be controlled.

[0037] Refer to Figure 1 , a feed port is fixedly connected to the top of the liquid metering tank body 1. Support feet are fixedly connected to the four corners at the bottom of the liquid metering tank body 1. A viewing window 3 is provided on the outer side of the measuring cylinder 2. Through the setting of the viewing window 3, it is convenient for the staff to observe the measuring liquid in the measuring cylinder 2.

[0038] Working principle: First, pour the liquid to be stored into the liquid metering tank body 1 through the feed inlet for storage. When the stored liquid needs to be used, the solenoid valve 20 and the second servo motor 18 can be controlled to open simultaneously by the controller 6. Through the rotation of the screw 17, the pressing piston 14 is driven to slide on the inner wall of the measuring cylinder 2. At this time, the liquid in the liquid metering tank body 1 can be pumped into the interior of the measuring cylinder 2 through the feed pipe 12. Through the coordinated use of the transmission rod 16, an important limiting effect can be exerted on the pressing piston 14. At the same time, the movement of the pressing piston 14 will inevitably push the transmission rod 16 and the pointer 19 to move. The staff can calculate the volume of the taken-out liquid according to the scale on the scale 15. Compared with the use of a liquid level sensor for the above structure, this method is less affected by factors such as temperature and pressure, thereby being able to improve the metering accuracy and reduce the deviation of the metering result;

[0039] Then, start the first servo motor 5. Through the rotation of the main shaft 8, the support bar 21, the bottom cleaning frame 9 and the turning paddle 7 can be driven to rotate. The use of the bottom cleaning frame 9 can scrape off the liquid adhering to the bottom end of the inner wall of the liquid metering tank body 1, and the scraper 4 scrapes off the liquid on the side wall of the liquid metering tank body 1. Through the coordinated use of the bottom cleaning frame 9 and the scraper 4, there are no dead corners or areas that are not easy to clean in the structural design. On the one hand, it can reduce liquid adhesion and improve liquid utilization rate. On the other hand, it can improve the metering accuracy and may reduce the difficulty of cleaning and maintenance.

[0040] In the description of the present utility model, it should be noted that unless otherwise clearly specified and limited, terms such as "installation", "provided with", "connection", etc. should be understood in a broad sense. For example, "connection" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the internal communication of two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific situations.

[0041] The above are only the preferred embodiments of the present application and are not used to limit the present application. Although the present application has been described in detail with reference to the foregoing embodiments, for those skilled in the art, they can still modify the technical solutions recorded in the foregoing embodiments, or perform equivalent replacements on some of the technical features. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A liquid metering tank for improving metering accuracy, comprising a liquid metering tank body (1), characterized in that: A measuring cylinder (2) is provided at the bottom of the liquid metering tank body (1), a pressing piston (14) is slidably mounted inside the measuring cylinder (2), a screw rod (17) is rotatably connected inside the measuring cylinder (2), the screw rod (17) is threadedly connected to the pressing piston (14), a transmission rod (16) is fixedly connected to one side of the pressing piston (14), the transmission rod (16) is slidably connected to the inside of the measuring cylinder (2), a pointer (19) is fixedly connected to one end of the transmission rod (16) away from the pressing piston (14), a scale (15) is fixedly connected to the outside of the measuring cylinder (2), and the pointer (19) points to the scale (15).

2. A liquid metering tank for improving metering accuracy according to claim 1, characterized in that: A cleaning mechanism is provided inside the liquid metering tank body (1), and the cleaning mechanism comprises a main shaft (8) rotatably mounted inside the liquid metering tank body (1), bottom cleaning frames (9) are fixedly connected to both sides of the bottom of the main shaft (8), the outer side of the bottom cleaning frame (9) is in contact with the inner wall of the liquid metering tank body (1), two support bars (21) are fixedly connected to the outer side of the main shaft (8) and located above the bottom cleaning frame (9), a scraper (4) is fixedly connected between the two support bars (21), and the scraper (4) is in contact with the inner wall of the liquid metering tank body (1), fixed shafts are fixedly connected to both sides of the main shaft (8), and flipping paddles (7) are fixedly connected to the outer side of the fixed shaft at equal distances.

3. A liquid metering tank for improving metering accuracy according to claim 1, characterized in that: A matching mechanism is provided on the outside of the measuring cylinder (2), the matching mechanism comprising a discharge pipe (11) fixedly connected to one side of the measuring cylinder (2), a feed pipe (12) fixedly connected to the side of the measuring cylinder (2) away from the pointer (19), and an end of the feed pipe (12) away from the measuring cylinder (2) extends to the interior of the liquid metering tank body (1).

4. A liquid metering tank for improving metering accuracy according to claim 3, characterized in that: The matching mechanism further comprises a solenoid valve (20) fixedly mounted inside the feed pipe (12), and a one-way valve (13) is fixedly mounted inside both the discharge pipe (11) and the feed pipe (12).

5. A liquid metering tank for improving metering accuracy according to claim 4, characterized in that: A servo motor 1 (5) is fixedly mounted on the top of the liquid metering tank body (1); an output shaft of the servo motor 1 (5) extends into the interior of the liquid metering tank body (1) and is fixedly connected to the main shaft (8).

6. A liquid metering tank for improving metering accuracy according to claim 5, characterized in that: A servo motor 2 (18) is fixedly mounted on a side of the measuring cylinder (2) away from the discharge pipe (11), and an output shaft of the servo motor 2 (18) extends into the interior of the measuring cylinder (2) and is fixedly connected to the screw rod (17).

7. A liquid metering tank for improving metering accuracy according to claim 6, characterized in that: A controller (6) is fixedly mounted on the outer side of the liquid metering tank body (1), a temperature sensor (10) is fixedly mounted on the top of the inner wall of the liquid metering tank body (1), and the servo motor 1 (5), the temperature sensor (10), the solenoid valve (20) and the servo motor 2 (18) are all electrically connected to the controller (6).

8. A liquid metering tank for improving metering accuracy according to claim 1, characterized in that: The top of the liquid metering tank body (1) is fixedly connected to a feed port, the four corners of the bottom of the liquid metering tank body (1) are fixedly connected to support feet, and a visual window (3) is provided on the outside of the measuring cylinder (2).

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