Three-channel anti-crystallization valveless ceramic metering pump

Abstract

The invention relates to the technical field of metering pumps, in particular to a three-channel anti-crystallization valveless ceramic metering pump. The lubricating sealing port and the lubricating sealing groove are designed, so that the inside of the pump body is isolated from the outside on one hand, and in-place lubrication can be guaranteed on the other hand. In addition, through an isolation sealing groove and an isolation sealing opening, on one hand, it is guaranteed that filling liquid is isolated from lubricating liquid, the purity of the filling liquid is guaranteed, and on the other hand, the temperature in the pump body is reduced. According to the ceramic valveless metering pump, liquid is sucked in through the filling inlet through rotary reciprocating motion, and then the liquid is pumped out through the filling outlet for filling.

Description

Technical Field

[0001] This invention relates to the field of metering pump technology, and in particular to a three-channel anti-crystallization valveless ceramic metering pump. Background Technology

[0002] When filling special liquids or aqueous solutions, crystallization can occur when the liquid comes into contact with air, leading to pump jamming. To solve this problem, a three-channel ceramic valveless metering pump was designed. Two-channel ceramic valveless metering pumps are available on the market, which can solve problems such as crystallization and pump jamming, but the liquid in the lubrication channel can mix with the filling liquid, causing the filling liquid to become unusable. Summary of the Invention

[0003] The purpose of this invention is to provide a three-channel anti-crystallization valveless ceramic metering pump, which solves the problem that the liquid in the lubrication channel of a conventional two-channel valveless ceramic metering pump will merge into the filling liquid during use, thus affecting the quality of the filling liquid.

[0004] To solve the above-mentioned technical problems, the present invention adopts the following technical solution: This invention provides a three-channel anti-crystallization valveless ceramic metering pump, comprising: Power unit; A metering pump body includes a ceramic pump metal sleeve, a ceramic pump sleeve adapted to be disposed within the ceramic pump metal sleeve, and a ceramic pump shaft adapted to be disposed within the ceramic pump sleeve. A sealing ring and a flat washer are provided at the end of the ceramic pump sleeve, and a rear cover is provided at the end of the ceramic pump metal sleeve corresponding to the outer surface of the flat washer. A lubrication sealing groove and an isolation sealing groove are pre-formed on the inner wall of the ceramic pump sleeve. A lubricating fluid inlet and outlet communicating with the lubrication sealing groove are provided on the ceramic pump metal sleeve, and an isolation gas inlet and outlet communicating with the isolation sealing groove are also provided on the ceramic pump metal sleeve. A filling inlet and a filling outlet are also provided on the ceramic pump metal sleeve. The transmission mechanism includes a rotating aluminum head for transmitting power between the power unit and the ceramic pump shaft, a spherical bearing, and a pump shaft metal sleeve mounted on the end of the ceramic pump shaft.

[0005] In this embodiment, the power device is further described as a servo motor or a stepper motor.

[0006] Furthermore in this embodiment, a motor frame is provided on the power unit, and a ceramic pump frame is provided on the metering pump body, wherein the ceramic pump frame is hinged to the motor frame via a rotating shaft.

[0007] Furthermore, in this embodiment, an angle micrometer is provided on the motor frame, and the angle micrometer is also connected to the ceramic pump frame through an angle micrometer fixing piece to adjust the deflection of the ceramic pump frame relative to the rotating shaft.

[0008] Furthermore, in this embodiment, a reset scanning plate is provided at the end of the rotating aluminum head, and a reset photoelectric switch adapted to the reset scanning plate is provided on the motor frame.

[0009] Furthermore in this embodiment, the end of the ceramic pump shaft extending from the ceramic pump sleeve is provided with a pump shaft metal sleeve, and a pin is provided on the pump shaft metal sleeve, the pin being perpendicular to the axis of the pump shaft metal sleeve.

[0010] In this embodiment, a spherical bearing is further provided inside the rotating aluminum head via a spherical bearing cover, and the end of the pin is adapted to be disposed inside the spherical bearing.

[0011] Furthermore, in this embodiment, a lubrication sealing joint I and a lubrication sealing joint II, which connect the inlet and outlet of the lubricating fluid, are provided on the metal sleeve of the ceramic pump.

[0012] Furthermore, in this embodiment, the ceramic pump metal sleeve is provided with isolation sealing joint I and isolation sealing joint II to isolate the gas inlet and outlet.

[0013] Furthermore, in this embodiment, the isolation gas is an inert gas, which is supplied cyclically through a gas supply source.

[0014] Compared with the prior art, the beneficial technical effects of the present invention are as follows: The invention is designed with a lubrication sealing port and a lubrication sealing groove, which on the one hand ensures that the inside of the pump body is isolated from the outside, and on the other hand ensures that lubrication is in place.

[0015] The present invention also uses an isolation sealing groove and an isolation sealing port to ensure the isolation of the filling liquid from the lubricating liquid, thus ensuring the purity of the filling liquid, and to reduce the temperature inside the pump body.

[0016] The ceramic valveless metering pump of the present invention uses a reciprocating motion to draw liquid in through the filling inlet and then pump the liquid out through the filling outlet for filling. Attached Figure Description

[0017] The invention will be further described below with reference to the accompanying drawings. Figure 1 This is a cross-sectional schematic diagram of the three-channel anti-crystallization valveless ceramic metering pump of the present invention; Figure 2 To and Figure 1 A schematic diagram of the cross-section in the vertical direction; Figure 3 This is an external schematic diagram of the three-channel anti-crystallization valveless ceramic metering pump of the present invention; Figure 4 This is a schematic diagram of the metering pump after the servo motor has been separated. Figure 5A schematic diagram of the cross-section of the metering pump after the servo motor has been separated; Figure 6 for Figure 4 Schematic diagram of the three-dimensional structure.

[0018] Explanation of reference numerals in the attached drawings: 1. Servo motor; 2. Reset photoelectric switch; 3. Angle micrometer; 4. Reset scanning plate; 5. Rotating aluminum head; 6. Spherical bearing cover; 7. Spherical bearing; 8. Angle micrometer fixing plate; 9. Pin; 10. Pump shaft metal sleeve; 11. Ceramic pump shaft; 12. Ceramic pump sleeve; 13. Ceramic metal sleeve; 14. Rear cover; 15. Flat gasket; 16. Sealing ring; 17. Filling inlet; 18. Filling outlet; 19. Lubrication sealing joint I; 20. Isolation sealing joint I; 21. Lubrication sealing joint II; 22. Isolation sealing joint II; 23. Motor frame; 24. Rotating shaft; 25. Ceramic pump frame; 26. Lubrication sealing groove; 27. Isolation sealing groove. Detailed Implementation

[0019] This embodiment discloses a three-channel anti-crystallization valveless ceramic metering pump, including a metering pump body, a transmission mechanism, and a power unit.

[0020] In this embodiment, the power unit is a servo motor 1 or a stepper motor. A motor frame 23 is mounted on the power unit, and a ceramic pump frame 25 is mounted on the metering pump body. The ceramic pump frame 25 is hinged to the motor frame 23 via a rotating shaft 24.

[0021] refer to Figure 2 The motor frame 23 and the ceramic pump frame 25 are both U-shaped frames, and their ends are hinged together by the rotating shaft 24.

[0022] refer to Figure 1 An angle micrometer 3 is mounted on the motor frame 23; the angle micrometer 3 is also connected to the ceramic pump frame 25 through an angle micrometer fixing plate 8 (specifically, the end of the angle micrometer 3 is hinged to the top of the angle micrometer fixing plate 8 through a hinge seat) to adjust the deflection of the ceramic pump frame 25 relative to the rotating shaft 24. At the same time, the angle micrometer 3 also measures the deflection angle of the ceramic pump frame 25 relative to the motor frame 23.

[0023] In this embodiment, a reset scanning plate 4 is installed at the end of the rotating aluminum head 5, and a reset photoelectric switch 2 adapted to the reset scanning plate 4 is installed on the motor frame 23. The reset photoelectric switch 2 is used to detect the rotational speed of the rotating aluminum head 5. A spherical bearing is installed on the rotating aluminum head, and the pin 9 on the ceramic pump shaft 11 is installed in the spherical bearing. By adjusting the length of the angle micrometer, the ceramic pump frame 25 is offset around the rotating shaft, and the ceramic pump sleeve 12 is offset at the same time. The angle increases, the reciprocating stroke of the ceramic pump shaft 11 increases, and the flow rate increases.

[0024] refer to Figure 1 and Figure 2 In this embodiment, the metering pump body includes a ceramic pump metal sleeve 13, a ceramic pump sleeve 12 adapted to be installed in the ceramic pump metal sleeve 13, and a ceramic pump shaft 11 adapted to be installed in the ceramic pump sleeve 12.

[0025] refer to Figure 4 The ceramic pump sleeve 12 is equipped with a sealing ring 16 and a flat gasket 15 at its end, and a rear cover 14 is installed at the end of the ceramic pump metal sleeve 13 and on the outside of the flat gasket 15. The inner wall of the ceramic pump sleeve 12 is pre-fabricated with a lubrication sealing groove 26 and an isolation sealing groove 27. The ceramic pump metal sleeve 13 is equipped with a lubricating fluid inlet and outlet communicating with the lubrication sealing groove 26, and an isolation gas inlet and outlet communicating with the isolation sealing groove 27. The ceramic pump metal sleeve 13 is also equipped with a filling inlet 17 and a filling outlet 18.

[0026] In this embodiment, lubrication sealing joints I19 and II21, which connect the inlet and outlet of the lubricating fluid, are installed on the metal sleeve 13 of the ceramic pump. Isolation sealing joints I20 and II22, which isolate the inlet and outlet of the gas, are also installed on the metal sleeve 13 of the ceramic pump. The isolation gas is an inert gas, which is circulated through a gas supply source. Thus, the lubricating fluid entering the lubrication sealing groove 26 lubricates the ceramic pump shaft 11 and the ceramic pump sleeve 12, while the inert gas introduced into the isolation sealing groove 27 seals the lubricating medium in the lubrication sealing groove 26. Specifically, the pressure of the inert gas is greater than the downward diffusion pressure of the lubricating medium.

[0027] In this embodiment, the transmission mechanism includes a rotating aluminum head 5 for transmitting power between the power unit and the ceramic pump shaft 11, a spherical bearing 7, and a pump shaft metal sleeve 10 installed at the end of the ceramic pump shaft 11.

[0028] refer to Figure 1In this embodiment, a pump shaft metal sleeve 10 is installed at the end of the ceramic pump shaft 11 extending from the ceramic pump sleeve 12, and a pin 9 is installed on the pump shaft metal sleeve 10, the pin 9 being perpendicular to the axis of the pump shaft metal sleeve 10. A spherical bearing 7 is installed inside the rotating aluminum head 5 via a spherical bearing cover 6, and the end of the pin 9 is adapted to be installed inside the spherical bearing 7.

[0029] In this embodiment, adjusting the length of the micrometer 3 changes the angle between the motor frame 23 and the ceramic pump frame 25. A larger angle results in a larger single injection volume, while a smaller angle results in a smaller single injection volume. The stepper / servo motor 1 drives the rotating aluminum head 5, which in turn drives the ceramic pump shaft 11 to rotate and reciprocate. The rotation and reciprocating motion of the ceramic pump shaft 11 changes the pump cavity. Specifically, the flatness of the ceramic pump shaft 11 opens or closes the filling inlet 17 or the filling outlet 18, thereby achieving precise filling.

[0030] This embodiment also provides the assembly process of a three-channel anti-crystallization valveless ceramic metering pump: 1. The motor 1 and the motor frame 23 are fixedly connected by screws, and the reset photoelectric switch 2 is installed on the pump frame 23.

[0031] 2. The spherical bearing 7 is installed on the rotating aluminum head 5, the spherical bearing cover 6 is installed on the spherical bearing 7 and pressed tightly, and the reset scanning plate 4 is installed at the front end of the rotating aluminum head 5.

[0032] 3. Install the assembled rotating aluminum head 5 onto the shaft of motor 1.

[0033] 4. The ceramic pump frame 25 is connected and fixed by the rotating shaft 24. One end of the angle micrometer 3 is fixed on the motor frame 23, and the other end is connected to the ceramic frame 25 through the angle micrometer fixing piece 8.

[0034] 5. The pump shaft metal sleeve 10 and the ceramic pump shaft 11 are integrally formed (integral forming is defined as: ceramic pump shaft 11A). The pin 9 is installed in the reserved hole of the pump shaft metal sleeve 10 and fixed by screws.

[0035] 6. The ceramic pump sleeve 12, ceramic metal sleeve 13, filling inlet nozzle 17 and filling outlet nozzle 18 are integrally machined (integral machining is defined as: ceramic pump sleeve 12A). The sealing ring 16 is installed on the flat gasket 15, and the flat gasket 15 is installed on the rear cover 14. The rear cover 14 seals the rear end of the threaded connection of the ceramic pump sleeve 12A. The lubrication sealing joint I 19, isolation sealing joint I 20, lubrication sealing joint II 21 and isolation sealing joint II 22 are respectively connected to the corresponding ports.

[0036] 7. The ceramic pump shaft 11A is installed on the ceramic pump sleeve 12A. The pin 9 is inserted into the hole of the spherical bearing 7, and the ceramic pump sleeve 12A is connected and fixed to the ceramic pump frame 25.

[0037] In this embodiment, reference Figure 5 The working principle of a three-channel ceramic valveless metering pump, from top to bottom, includes: The first channel (including the lubrication sealing groove 26): This is the lubrication sealing port. Liquid enters from the lubrication sealing inlet, passes through the through-groove inside the ceramic pump sleeve, flows through the pump body, and exits at the lubrication sealing outlet, forming a circulation. This ensures two things: first, that the pump body's interior is isolated from the outside environment; and second, that lubrication is adequate.

[0038] The second channel (isolation sealing groove 27): This is an isolation sealing port. Inert gas enters from the isolation sealing inlet, passes through the through-groove inside the ceramic pump sleeve, flows through the pump body, and exits at the isolation sealing outlet, forming a circulation. It serves two purposes: first, it ensures the isolation between the filling liquid and the lubricating liquid, guaranteeing the purity of the filling liquid; second, it reduces the temperature inside the pump body.

[0039] Third Channel ( Figure 5 Medium-sized hole): The ceramic valveless metering pump draws liquid in through the filling inlet through rotary reciprocating motion and then pumps the liquid out through the filling outlet to form a filling.

[0040] The above embodiments are merely preferred embodiments of the present invention and are not intended to limit the scope of the present invention. Various modifications and improvements made by those skilled in the art to the technical solutions of the present invention without departing from the spirit of the present invention should fall within the protection scope defined by the claims of the present invention.

Claims

1. A three-channel anti-crystallization valveless ceramic metering pump, characterized in that, include: Power unit; The metering pump body includes a ceramic pump metal sleeve (13), a ceramic pump sleeve (12) adapted to be disposed within the ceramic pump metal sleeve (13), and a ceramic pump shaft (11) adapted to be disposed within the ceramic pump sleeve (12). A sealing ring (16) and a flat washer (15) are provided at the end of the ceramic pump sleeve (12), and a rear cover (14) is provided at the end of the ceramic pump metal sleeve (13) and corresponding to the outside of the flat washer (15). A lubrication sealing groove (26) and an isolation sealing groove (27) are pre-formed on the inner wall of the ceramic pump sleeve (12). A lubricating fluid inlet and outlet communicating with the lubrication sealing groove (26) are provided on the ceramic pump metal sleeve (13), and an isolation gas inlet and outlet communicating with the isolation sealing groove (27) are also provided on the ceramic pump metal sleeve (13). A filling inlet (17) and a filling outlet (18) are also provided on the ceramic pump metal sleeve (13). The transmission mechanism includes a rotating aluminum head (5) for transmitting power between the power unit and the ceramic pump shaft (11), a spherical bearing (7), and a pump shaft metal sleeve (10) mounted on the end of the ceramic pump shaft (11).

2. The three-channel anti-crystallization valveless ceramic metering pump according to claim 1, characterized in that: The power unit is a servo motor (1) or a stepper motor.

3. The three-channel anti-crystallization valveless ceramic metering pump according to claim 1, characterized in that: A motor frame (23) is provided on the power unit, and a ceramic pump frame (25) is provided on the metering pump body, wherein the ceramic pump frame (25) is hinged to the motor frame (23) via a rotating shaft (24).

4. The three-channel anti-crystallization valveless ceramic metering pump according to claim 1, characterized in that: An angle micrometer (3) is provided on the motor frame (23). The angle micrometer (3) is also connected to the ceramic pump frame (25) through the angle micrometer fixing piece (8) to adjust the deflection of the ceramic pump frame (25) relative to the rotating shaft (24).

5. The three-channel anti-crystallization valveless ceramic metering pump according to claim 1, characterized in that: A reset scanning plate (4) is provided at the end of the rotating aluminum head (5), and a reset photoelectric switch (2) adapted to the reset scanning plate (4) is provided on the motor frame (23).

6. The three-channel anti-crystallization valveless ceramic metering pump according to claim 1, characterized in that: The ceramic pump shaft (11) extends from the end of the ceramic pump sleeve (12) and is provided with a pump shaft metal sleeve (10), and a pin (9) is provided on the pump shaft metal sleeve (10), the pin (9) being perpendicular to the axis of the pump shaft metal sleeve (10).

7. The three-channel anti-crystallization valveless ceramic metering pump according to claim 6, characterized in that: A spherical bearing (7) is provided inside the rotating aluminum head (5) via a spherical bearing cap (6), and the end of the pin (9) is adapted to be disposed inside the spherical bearing (7).

8. The three-channel anti-crystallization valveless ceramic metering pump according to claim 1, characterized in that: The ceramic pump metal sleeve (13) is provided with a lubrication sealing joint I (19) and a lubrication sealing joint II (21) that connect the inlet and outlet of the lubricating fluid.

9. The three-channel anti-crystallization valveless ceramic metering pump according to claim 1, characterized in that: The ceramic pump metal sleeve (13) is provided with isolation sealing joint I (20) and isolation sealing joint II (22) to isolate the gas inlet and outlet.

10. The three-channel anti-crystallization valveless ceramic metering pump according to claim 9, characterized in that: The isolation gas is an inert gas, which is supplied in a circulating manner through a gas supply source.

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