Intelligent metering pump

Abstract

The utility model discloses an intelligent metering pump. The intelligent metering pump comprises a motor, a transmission mechanism, a metering mechanism and a valve assembly which are connected in sequence, the transmission mechanism comprises a connecting rod which is connected with the driving end of the motor through a coupler, and a mounting piece is arranged on the connecting rod; the metering mechanism comprises a cylinder body, a piston is arranged in the cylinder body, and the piston is connected with the mounting piece; when the motor drives the connecting rod to move, the mounting piece can drive the piston to reciprocate towards the direction of the valve assembly. Compared with the prior art, the intelligent metering pump is simple and compact in structure and high in measurement precision.

Description

Technical Field

[0001] The utility model relates to the field of metering pumps, in particular to an intelligent metering pump. Background Art

[0002] Metering pumps, also known as injection pumps, are mainly used for injection and filling of electrolytes, acid and alkali solutions, ultrapure water, medical reagents and other industries. Existing metering pumps generally have complex structures and are not compact, resulting in large movement gaps and prone to poor measurement accuracy.

[0003] Therefore, based on the above problems, it is necessary to improve the existing metering pump to solve the above problems. Utility Model Content

[0004] In view of the problems existing in the above-mentioned prior art, the utility model provides an intelligent metering pump, which has a simple and compact structure and a small movement gap to improve the measurement accuracy.

[0005] In order to solve the above technical problems, the technical solution of the utility model is:

[0006] An intelligent metering pump, comprising:

[0007] A motor, a transmission mechanism, a metering mechanism and a valve assembly connected in sequence;

[0008] The transmission mechanism comprises a connecting rod connected to the motor driving end through a coupling, and a mounting piece is provided on the connecting rod;

[0009] The metering mechanism comprises a cylinder body, a piston is arranged in the cylinder body, and the piston is connected to the mounting member;

[0010] When the motor drives the connecting rod to move, the mounting member can drive the piston to perform reciprocating motion toward the valve assembly.

[0011] Preferably, the transmission mechanism further comprises a mounting seat, and the mounting seat cooperates with the motor, the coupling and the connecting rod;

[0012] A bearing seat is connected to the connecting rod.

[0013] Preferably, the transmission mechanism further comprises a joint and a transmission main shaft, and the piston and the mounting member are connected via the joint and the transmission main shaft;

[0014] A retaining ring is provided at one end of the connecting rod close to the piston.

[0015] Preferably, the valve assembly comprises a valve body, the valve body is provided with an inlet and an outlet, a valve core is provided in each of the inlet and the outlet, and a spring and a first sealing member are provided on the surface of the valve core.

[0016] Preferably, a main seat is provided outside the mounting member, and a second sealing member is provided between the main seat and the transmission main shaft;

[0017] A third sealing member is provided between the cylinder body and the piston.

[0018] Preferably, it further comprises a first shell and a second shell, the transmission mechanism is arranged in the first shell, and the metering mechanism is arranged in the second shell.

[0019] Preferably, an outer cover is provided on the surface of the first shell, and an observation window is provided on the surface of the second shell.

[0020] Preferably, the first shell, the second shell and the valve assembly abut against each other in sequence, and the first shell is fixed to the valve assembly via at least one fixing rod.

[0021] Preferably, a sensor is arranged outside the first shell, and an induction column matched with the sensor is arranged in the transmission mechanism.

[0022] Preferably, the sensor is an origin sensor.

[0023] Compared with the prior art, the utility model has the following beneficial effects:

[0024] The measuring pump has a simple and compact structure and high measuring accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a three-dimensional diagram of an intelligent metering pump of the present application.

[0026] Figure 2 It is a side view of an intelligent metering pump of the present application.

[0027] Figure 3 It is a top view of an intelligent metering pump of the present application.

[0028] Figure 4 This is a schematic structural diagram of an intelligent metering pump without an outer cover in the present application.

[0029] Figure 5 It is a side sectional view of an intelligent metering pump of the present application.

[0030] Figure 6 It is a cross-sectional view of an intelligent metering pump in the present application along the AA direction. DETAILED DESCRIPTION

[0031] The following is combined with Figure 1-6 , the specific implementation methods of the utility model are further described in detail to make the technical solution of the utility model easier to understand and grasp.

[0032] In this embodiment, it should be understood that the terms "middle", "upper", "lower", "top", "right side", "end", "front", "back", "middle", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In addition, in this specific embodiment, if the connection or fixing method between components is not specifically described, the connection or fixing method can be through bolt fixing or pin fixing, or pin shaft connection and the like commonly used in the prior art, and therefore, it is not described in detail in this embodiment.

[0034] The following is combined with Figure 1-6 This application is described in further detail.

[0035] like Figure 1 and Figure 2 As shown, an intelligent metering pump comprises: a motor 1, a transmission mechanism 2, a metering mechanism 3 and a valve assembly 4 connected in sequence. In this embodiment, the motor 1 is a servo motor.

[0036] like Figure 5 As shown, the transmission mechanism 2 includes a connecting rod 22 connected to the driving end of the motor 1 through a coupling 21, and a mounting member 23 is provided on the connecting rod 22. In this embodiment, the combination of the connecting rod 22 and the mounting member 23 forms a ball screw, which has the characteristics of high positioning accuracy and high-speed forward and reverse transmission and conversion transmission, which can improve the accuracy of the metering pump.

[0037] The metering mechanism 3 includes a cylinder 31, a piston 32 is arranged in the cylinder 31, and a third sealing member 34 is arranged between the cylinder 31 and the piston 32 to play a sealing role to prevent liquid from penetrating into the metering mechanism 3 and causing damage to parts.

[0038] The piston 32 is connected to the mounting member 23. When the motor 1 drives the connecting rod 22 to move, the mounting member 23 can drive the piston 32 to reciprocate toward the valve assembly 4. Specifically, the piston 32 and the mounting member 23 are connected via the joint 33 and the transmission main shaft 35. Since the mounting member 23 is connected to the piston 32 via the transmission main shaft 35, there may be problems such as eccentricity or poor balance accuracy, and the performance and service life may be reduced. Therefore, by providing the joint 33, errors can be eliminated, eccentricity problems can be solved, related components can be protected, the equipment can run smoothly, and the service life can be extended.

[0039] like Figure 5 As shown, the transmission mechanism 2 also includes a mounting seat 24, which cooperates with the motor 1, the coupling 21 and the connecting rod 22. The mounting seat 24 is a motor seat. The motor 1 is fixed on the transmission mechanism 2 by providing the mounting seat 24, thereby ensuring a firm connection between the motor 1 and the transmission mechanism 2, ensuring the correct alignment between the motor 1 and the transmission mechanism 2, reducing transmission errors, reducing vibrations during operation of the motor 1, and reducing the noise level during operation of the motor 1.

[0040] A bearing seat 25 is connected to the connecting rod 22, and the bearing seat 25 is used to support the connecting rod 22 and keep the connecting rod 22 balanced. A retaining ring 26 is provided at one end of the connecting rod 22 close to the piston 32 to prevent the mounting member 23 (i.e., the ball nut) from falling off during overload or assembly and debugging, causing the connecting rod 22 (i.e., the ball screw) to fail to work normally.

[0041] The valve assembly 4 includes a valve body 41, which is provided with an inlet 42 and an outlet 43. A valve core 44 is provided in the inlet 42 and the outlet 43. A spring 45 and a first sealing member 5 are provided on the surface of the valve core 44. The spring 45 can effectively ensure that the liquid can flow effectively, maintain the required pressure stable, and reduce vibration and impact; and the first sealing member 5 is used to prevent the liquid from contacting the spring 45, thereby effectively improving the service life of the spring 45.

[0042] A main seat 6 is disposed outside the mounting member 23 , and a second sealing member 61 is disposed between the main seat 6 and the transmission main shaft 35 to play a sealing role and prevent liquid from penetrating into the transmission mechanism 2 and causing damage to parts.

[0043] like Figure 1-Figure 3As shown, it also includes a first shell 7 and a second shell 8. The transmission mechanism 2 is arranged in the first shell 7, and the metering mechanism 3 is arranged in the second shell 8. The first shell 7 is divided into a bottom plate 71 and an outer cover 72. The first shell 7, the second shell 8 and the valve assembly 4 are abutted against each other in sequence, and the first shell 7 is fixed to the valve assembly 4 by at least one fixing rod 74. An outer cover 73 is provided on the surface of the first shell 7, and the user can repair the components in the transmission mechanism 2 by opening the outer cover 73. An observation window 81 is provided on the surface of the second shell 8, and the user can observe the internal working conditions by providing the observation window 81.

[0044] like Figure 4 and Figure 6 As shown, a sensor 9 is arranged outside the first shell 7, and a sensing column 91 (specifically coordinated with the transmission main shaft 35) that cooperates with the sensor 9 is provided in the transmission mechanism 2; in this embodiment, the sensor 9 is an origin sensor 9, and the origin sensor 9 can be used to determine the initial position of the connecting rod 22, and the origin of the machine can be accurately controlled to ensure that the motion trajectory is accurate, thereby improving the accuracy and stability of the machine.

[0045] Compared with the existing metering pumps, the intelligent metering pump of the above technical solution can control the liquid entering the valve body 41 by driving the piston 32 in the cylinder 31 through the connecting rod 22 on the motor 1. The movement gap is small to ensure the measurement accuracy, and more parts are reduced to make the structure simple and compact. In addition, the intelligent metering pump has the advantages of improved measurement accuracy and the like by cooperating with the sensor 91, the connector 33 and the mounting seat 24 and other components.

[0046] Principle description:

[0047] When the motor 1 is started and the driving end of the motor 1 rotates forward, the connecting rod 22 rotates and drives the mounting member 23 to move, driving the piston 32 to move toward the valve assembly 4, so that the pressure of the valve body 41 increases, driving the valve core 44 to move, so that the liquid can enter the valve body 41 from the feed port 42, and then flow to the discharge port 43; when the driving end of the motor 1 is reversed, the connecting rod 22 rotates and drives the mounting member 23 to move, so as to drive the piston 32 to move away from the valve assembly 4, and the valve core 44 in the valve body 41 is reset, so that the liquid cannot enter the valve body 41 from the feed port 42, and the discharge port 43 is also blocked by the valve core 44, and the liquid cannot flow out of the discharge port 43.

[0048] The technical effects of this utility model are mainly reflected in the following aspects:

[0049] The measuring pump has a simple and compact structure and high measuring accuracy.

[0050] Of course, the above are only typical examples of the present invention. In addition, the present invention may have many other specific implementations. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. An intelligent metering pump, characterized in that: include: A motor (1), a transmission mechanism (2), a metering mechanism (3) and a valve assembly (4) connected in sequence; The transmission mechanism (2) comprises a connecting rod (22) connected to the driving end of the motor (1) via a coupling (21), and a mounting member (23) is provided on the connecting rod (22); The metering mechanism (3) comprises a cylinder (31), a piston (32) is arranged in the cylinder (31), and the piston (32) is connected to the mounting member (23); When the motor (1) drives the connecting rod (22) to move, the mounting member (23) can drive the piston (32) to perform reciprocating motion in the direction of the valve assembly (4).

2. The intelligent metering pump according to claim 1, characterized in that: The transmission mechanism (2) further comprises a mounting seat (24), wherein the mounting seat (24) cooperates with the motor (1), the coupling (21) and the connecting rod (22); A bearing seat (25) is connected to the connecting rod (22).

3. The intelligent metering pump according to claim 1, characterized in that: The transmission mechanism (2) further comprises a joint (33) and a transmission main shaft (35), and the piston (32) and the mounting member (23) are connected via the joint (33) and the transmission main shaft (35); A retaining ring (26) is provided at one end of the connecting rod (22) close to the piston (32).

4. The intelligent metering pump according to claim 1, characterized in that: The valve assembly (4) comprises a valve body (41), wherein the valve body (41) is provided with an inlet (42) and an outlet (43), wherein each of the inlet (42) and the outlet (43) is provided with a valve core (44), and a spring (45) and a first sealing member (5) are provided on the surface of the valve core (44).

5. The intelligent metering pump according to claim 3, characterized in that: The mounting member (23) is provided with a main seat (6) outside, and a second sealing member (61) is provided between the main seat (6) and the transmission main shaft (35); A third sealing member (34) is provided between the cylinder body (31) and the piston (32).

6. The intelligent metering pump according to claim 1, characterized in that: It also comprises a first shell (7) and a second shell (8), wherein the transmission mechanism (2) is arranged in the first shell (7) and the metering mechanism (3) is arranged in the second shell (8).

7. The intelligent metering pump according to claim 6, characterized in that: An outer cover (73) is provided on the surface of the first shell (7), and an observation window (81) is provided on the surface of the second shell (8).

8. The intelligent metering pump according to claim 6, characterized in that: The first shell (7), the second shell (8) and the valve assembly (4) are abutted against each other in sequence, and the first shell (7) is fixed to the valve assembly (4) via at least one fixing rod.

9. The intelligent metering pump according to claim 6, characterized in that: A sensor (9) is arranged outside the first shell (7), and a sensing column (91) matching with the sensor (9) is arranged inside the transmission mechanism (2).

10. The intelligent metering pump according to claim 9, characterized in that: The sensor (9) is an origin sensor.

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