Intelligent metering pump

Abstract

The utility model discloses an intelligent metering pump which comprises a motor, a transmission mechanism, a metering mechanism and a valve assembly which are sequentially connected, and a control assembly is arranged on one side of the valve assembly. The valve assembly comprises a rotary valve outer sleeve and a rotary valve element arranged in the rotary valve outer sleeve, a rotary valve shell is arranged on the surface of the rotary valve outer sleeve, and a discharging part and a feeding part are arranged on the surface of the rotary valve shell. The control assembly comprises a control shell, a rack and a connecting shaft are arranged in the control shell, a gear matched with the rack is arranged on the connecting shaft, the connecting shaft is connected with the rotary valve element through a second coupler, and when the rack moves to drive the gear to rotate, the gear is driven by the second coupler to rotate. The connecting shaft drives the rotary valve element to rotate so as to control feeding and discharging of materials. Compared with the prior art, the intelligent metering pump is high in liquid discharging 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 in industries such as electrolytes, acid and alkali solutions, ultrapure water, and medical reagents. Existing metering pumps generally have certain discharge accuracy deviations when discharging liquid, which makes the discharge accuracy of metering pumps low.

[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 with high liquid discharge 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 are connected in sequence, and a control assembly is provided on one side of the valve assembly;

[0008] The valve assembly comprises a rotary valve outer sleeve and a rotary valve core arranged in the rotary valve outer sleeve, a rotary valve shell is arranged on the surface of the rotary valve outer sleeve, and a discharge portion and a feed portion are arranged on the surface of the rotary valve shell;

[0009] The control assembly includes a control shell, a rack and a connecting shaft are arranged in the control shell, a gear matching with the rack is arranged on the connecting shaft, the connecting shaft is connected to the rotary valve core through a second coupling, when the rack moves and drives the gear to rotate, the connecting shaft drives the rotary valve core to rotate to control the inflow and outflow of materials.

[0010] Preferably, the rotary valve core is provided with a top column, the second coupling is connected to the top column, and a spring is further provided between the second coupling and the top column.

[0011] Preferably, the control housing further comprises a rear cover and a gland, and the rear cover is provided with at least one air pipe joint;

[0012] A piston sleeve and a copper sleeve connected to the rack are arranged in the control housing.

[0013] Preferably, a rack sleeve is provided at one end of the control housing away from the air pipe joint, and the rack sleeve is provided with a refueling nozzle.

[0014] Preferably, the transmission mechanism comprises a connecting rod connected to the motor driving end through a first coupling, and a mounting member is provided on the connecting rod;

[0015] The metering mechanism comprises a cylinder body, a piston member is arranged in the cylinder body, and the piston member is connected to the mounting member;

[0016] When the motor drives the connecting rod to move, the mounting member can drive the piston member to perform reciprocating motion toward the valve assembly.

[0017] Preferably, the transmission mechanism further comprises a mounting seat, and the mounting seat cooperates with the motor, the first coupling and the connecting rod;

[0018] A bearing seat is connected to the connecting rod.

[0019] Preferably, the transmission mechanism further includes a joint and a transmission main shaft, and the piston member and the mounting member are connected via the joint and the transmission main shaft.

[0020] Preferably, a retaining ring is provided at one end of the connecting rod close to the piston member.

[0021] Preferably, it further comprises a first shell and a second shell, wherein the transmission mechanism is disposed in the first shell, and the metering mechanism is disposed in the second shell;

[0022] An outer cover is disposed on the surface of the first shell, and an observation window is disposed on the surface of the second shell.

[0023] 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.

[0024] Compared with the prior art, the utility model has the following beneficial effects:

[0025] The metering pump has high discharge accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional diagram of an intelligent metering pump of the present application.

[0027] Figure 2 It is a side view of an intelligent metering pump of the present application.

[0028] Figure 3 It is a side sectional view of an intelligent metering pump of the present application.

[0029] Figure 4 It is a cross-sectional view of an intelligent metering pump AA of the present application.

[0030] Figure 5 It is a side sectional view of an intelligent metering pump BB of the present application.

[0031] Figure 6 It is a structural schematic diagram of an intelligent metering pump without a control housing in the present application.

[0032] Figure 7 It is a structural schematic diagram of a transfer valve jacket and a transfer valve core of an intelligent metering pump of the present application. DETAILED DESCRIPTION

[0033] The following is combined with Figure 1-7 , 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.

[0034] 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.

[0035] 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.

[0036] The following is combined with Figure 1-7 This application is described in further detail.

[0037] 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, a control assembly 9 is provided on one side of the valve assembly 4, and in this embodiment, the motor 1 is a servo motor.

[0038] like Figure 3As shown, the valve assembly 4 includes a rotary valve housing 41 and a rotary valve core 42 arranged in the rotary valve housing 41, and the rotary valve housing 41 and the rotary valve core 42 are both provided with three through holes; a rotary valve shell 43 is provided on the surface of the rotary valve housing 41, and a discharge portion 411 and a feed portion 412 which are connected to the rotary valve housing 41 and the rotary valve core 42 are provided on the surface of the rotary valve housing 41, and the rotary valve shell 43 and the rotary valve housing 41 are both provided with a mounting hole, and the rotary valve shell 43 and the rotary valve housing 41 are assembled with the rotary valve housing 41 by fixing methods such as bolt connection, so that the rotary valve core 42 can rotate relative to the rotary valve housing 41. In this embodiment, the rotary valve core 42 and the rotary valve housing 41 are made of ceramic, and the discharge portion 411 and the feed portion 412 are respectively a discharge flange and a feed flange.

[0039] like Figure 4-Figure 7 As shown, the control assembly 9 includes a control housing 91, a rack 92 and a connecting shaft 93 are arranged in the control housing 91, a gear 94 matching with the rack 92 is arranged on the connecting shaft 93, and a bearing 99 is also arranged on the connecting shaft 93, and the connecting shaft 93 is connected to the rotary valve core 42 through a second coupling 95. When the rack 92 moves to drive the gear 94 to rotate, the connecting shaft 93 drives the rotary valve core 42 to rotate to control the inflow and outflow of materials. Through the cooperation of the rack 92 and the gear 94, the transmission is stable and reliable during operation, and the action accuracy is high, which can reduce the deviation of the discharge accuracy to improve the discharge accuracy.

[0040] The rotary valve core 42 is provided with a top column 96 , the second coupling 95 is connected to the top column 96 , and a spring 97 is further provided between the second coupling 95 and the top column 96 .

[0041] The control housing 91 further includes a rear cover 911 and a pressure cover 912, which are convenient for subsequent disassembly and maintenance. A rack housing 98 is provided at one end of the control housing 91 away from the air pipe joint 913, and a fuel nozzle 981 is provided on the outer cover of the rack 92. The rear cover 911 is provided with at least one air pipe joint 913, and the air pipe joint 913 is used to provide air pressure in the control housing 91, so that the air pressure can drive the rack 92 to move.

[0042] A piston sleeve 921 and a copper sleeve 922 connected to the rack 92 are arranged in the control housing 91. The copper sleeve 922 is used to provide lubrication between the moving mechanical parts, reduce mechanical friction, and prevent wear between the mechanical parts.

[0043] like Figure 3 As shown, the transmission mechanism 2 includes a connecting rod 22 connected to the driving end of the motor 1 through a first coupling 21, a mounting member 23 is provided on the connecting rod 22, and a main seat 6 is provided outside the mounting member 23. 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.

[0044] The metering mechanism 3 includes a cylinder body 31, and a piston member 32 is arranged in the cylinder body 31. The piston member 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 member 32 to reciprocate in the direction of the valve assembly 4. Specifically, the piston member 32 and the mounting member 23 are connected through the joint 33 and the transmission main shaft 35. Since the mounting member 23 is connected to the piston member 32 through the transmission main shaft 35, there may be problems such as eccentricity or poor balance accuracy, and the performance and service life will 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.

[0045] like Figure 3 As shown, the transmission mechanism 2 also includes a mounting seat 24, which cooperates with the motor 1, the first 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 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.

[0046] 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 maintain the balance of the connecting rod 22. A retaining ring 26 is provided at one end of the connecting rod 22 close to the piston member 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.

[0047] like Figure 1-Figure 3 As 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.

[0048] In order to prevent liquid from penetrating into the equipment and extend the service life of the equipment, seals 5 can be used between some parts and some parts in this embodiment, such as seals are provided between the second coupling 95, the main seat 6 and the transmission main shaft 35, between the copper sleeve 922 and the rack 92, and between the cylinder body 31 and the piston member 32, which will not be described in detail here.

[0049] Compared with the existing metering pumps, the intelligent metering pump of the above technical solution ensures the discharge accuracy and reduces the discharge deviation by controlling the component 9, and cooperates with the connector 33 and the mounting seat 24, so that the intelligent metering pump further improves the discharge accuracy and other advantages.

[0050] Principle description:

[0051] When the motor 1 and the control assembly 9 are started and the driving end of the motor 1 is in operation, the connecting rod 22 rotates to drive the mounting member 23 to move, driving the piston member 32 to reciprocate in the direction of the valve assembly 4, so that the pressure of the rotary valve core 41 increases.

[0052] Then, the gas is transported into the control housing 91 through the air pipe joint 913 to move the rack 92, thereby driving the connecting shaft 93 and the gear 94 to rotate, and the rotary valve core 41 rotates to control the entry and discharge of materials.

[0053] The technical effects of this utility model are mainly reflected in the following aspects:

[0054] The metering pump has high discharge accuracy.

[0055] 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, wherein a control assembly (9) is provided on one side of the valve assembly (4); The valve assembly (4) comprises a rotary valve housing (41) and a rotary valve core (42) arranged in the rotary valve housing (41); a rotary valve shell (43) is arranged on the surface of the rotary valve housing (41); and a discharge portion (411) and a feed portion (412) are arranged on the surface of the rotary valve shell (43); The control assembly (9) comprises a control housing (91), wherein a rack (92) and a connecting shaft (93) are arranged in the control housing (91), wherein the connecting shaft (93) is provided with a gear (94) matched with the rack (92), and the connecting shaft (93) is connected to the rotary valve core (42) via a second coupling (95), and when the rack (92) moves to drive the gear (94) to rotate, the connecting shaft (93) drives the rotary valve core (42) to rotate to control the inflow and outflow of materials.

2. The intelligent metering pump according to claim 1, characterized in that: The rotary valve core (42) is provided with a top column (96), the second coupling (95) is connected to the top column (96), and a spring (97) is further provided between the second coupling (95) and the top column (96).

3. The intelligent metering pump according to claim 1, characterized in that: The control housing (91) further comprises a rear cover (911) and a gland (912), wherein the rear cover (911) is provided with at least one air pipe joint (913); A piston sleeve (921) and a copper sleeve (922) connected to the rack (92) are arranged in the control housing (91).

4. The intelligent metering pump according to claim 1, characterized in that: A rack housing (98) is provided at one end of the control housing (91) away from the air pipe joint (913), and the rack housing (98) is provided with a fuel nozzle (981).

5. The intelligent metering pump according to claim 1, characterized in that: The transmission mechanism (2) comprises a connecting rod (22) connected to the driving end of the motor (1) via a first 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 member (32) to perform reciprocating motion in the direction of the valve assembly (4).

6. The intelligent metering pump according to claim 5, characterized in that: The transmission mechanism (2) further comprises a mounting seat (24), wherein the mounting seat (24) cooperates with the motor (1), the first coupling (21) and the connecting rod (22); A bearing seat (25) is connected to the connecting rod (22).

7. The intelligent metering pump according to claim 5, characterized in that: The transmission mechanism (2) further comprises a joint (33) and a transmission main shaft (35), and the piston member (32) and the mounting member (23) are connected via the joint (33) and the transmission main shaft (35).

8. The intelligent metering pump according to claim 5, characterized in that: A retaining ring (26) is provided at one end of the connecting rod (22) close to the piston member (32).

9. 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); 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).

10. The intelligent metering pump according to claim 9, 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 (74).

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