Piston pump capable of adjusting flow

Abstract

The piston pump comprises a shell and two pump liquid boxes, a movable opening is formed in the upper end face of the shell, two positioning grooves are formed in the upper end face of the shell, a driving motor is arranged in one positioning groove, a limiting groove is formed in the inner wall of the positioning groove, a limiting plate is arranged on the driving motor, and the limiting plate is arranged on the lower end face of the shell. An upper jacking groove is formed in the upper end face of the limiting plate, and a positioning rod is arranged in the upper jacking groove through an upper jacking mechanism. By arranging the driving motor, the fixed gear, the movable gear, the reciprocating lead screw, the connecting frame, the piston plates and the like and arranging the two pump liquid boxes with different sizes, the flow can be changed by replacing the pump liquid boxes, and when one piston plate is damaged, the piston plate can be replaced by the two pump liquid boxes, and the piston plate can be replaced by the two pump liquid boxes. And the object conveying operation can still be performed by virtue of the piston plate in the other pump liquid box, so that the economic loss at a critical moment is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of piston pumps, in particular to a piston pump with adjustable flow rate. Background Art

[0002] A piston pump, also known as a reciprocating pump, is a pump that supplies and transports liquid or gas through the reciprocating motion of a piston. Its basic principle is to use the reciprocating action of the piston in the cylinder to repeatedly change the volume of the cylinder to inhale and discharge the fluid.

[0003] Common piston pumps basically rely on components such as crankshafts to complete stroke changes and finally achieve flow adjustment operations. Once the piston component, which plays an important role, is damaged, the device will lose the object conveying operation, thereby causing certain economic losses. In order to change the status quo, this paper improves it and proposes a piston pump with adjustable flow. Utility Model Content

[0004] The utility model aims to solve the shortcomings in the prior art and proposes a piston pump with adjustable flow.

[0005] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0006] A piston pump with adjustable flow rate comprises a shell and two pump liquid tanks, the upper end surface of the shell is provided with a movable port, the upper end surface of the shell is provided with two positioning grooves, a driving motor is provided in one of the positioning grooves, a limiting groove is provided on the inner wall of the positioning groove, a limiting plate is provided on the driving motor, an upper top groove is provided on the upper end surface of the limiting plate, a positioning rod is provided in the upper top groove through an upper top mechanism, a positioning hole is provided on the upper end surface of the shell, a rotating chamber and a movable chamber are provided in each of the two pump liquid tanks, a reciprocating screw extending into the rotating chamber is rotatably provided on the upper inner wall of the shell, the two reciprocating screws are connected to the driving motor through a rotating mechanism, a piston plate is provided in the movable chamber for sealing and sliding, the piston plate is connected to the reciprocating screw through a connecting mechanism, and a liquid inlet pipe and a liquid outlet pipe connected to the movable chamber are provided on the shell.

[0007] Preferably, the lifting mechanism comprises a spring arranged in the upper lifting groove, and two ends of the spring are elastically connected to the outer wall of the positioning rod and the inner wall of the upper lifting groove respectively.

[0008] Preferably, the rotating mechanism comprises a movable gear arranged on the output shaft of the driving motor, and the two reciprocating screws are both provided with a fixed gear, and the fixed gear cooperates with the movable gear.

[0009] Preferably, the connection mechanism comprises a connection frame threadedly sleeved on the reciprocating screw, the connection frame is U-shaped and both ends are fixedly connected to the piston plate.

[0010] Preferably, a first valve is provided in the liquid inlet pipe and a second valve is provided in the liquid outlet pipe, and both the first valve and the second valve are one-way valves.

[0011] Preferably, a handle is provided on the driving motor, and the handle and the limiting plate are both welded to the driving motor.

[0012] Beneficial effects of the utility model:

[0013] 1. By setting up components such as a drive motor, a fixed gear, a movable gear, a reciprocating screw, a connecting frame and a piston plate, and setting up two pump liquid tanks of different sizes, the flow rate can be changed by replacing the pump liquid tank. Moreover, when two pump liquid tanks are set up, when one of the piston plates is damaged, the object conveying operation can still be carried out with the help of the piston plate in the other pump liquid tank, thereby avoiding economic losses at critical moments.

[0014] 2. By setting the positioning groove, limit groove, limit plate, positioning rod and spring, the flexible adjustment of the movable gear driven by the driving motor is realized, and the disassembly and assembly process is convenient and flexible, ensuring the convenience of use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 This is a schematic diagram of the structure of a piston pump with adjustable flow rate proposed by the utility model;

[0016] Figure 2 for Figure 1 A schematic diagram of the structure at A;

[0017] Figure 3 for Figure 1 Schematic diagram of the vertical section structure;

[0018] Figure 4 for Figure 3 A schematic diagram of the structure at B;

[0019] Figure 5 for Figure 4 Enlarged schematic diagram of the structure at location C.

[0020] In the figure: 1 housing, 2 liquid inlet pipe, 3 movable port, 4 drive motor, 5 handle, 6 positioning groove, 7 limit groove, 8 positioning hole, 9 liquid outlet pipe, 10 pump liquid box, 11 rotating chamber, 12 movable chamber, 13 piston plate, 14 reciprocating screw, 15 connecting frame, 16 fixed gear, 17 movable gear, 18 limit plate, 19 upper top groove, 20 positioning rod, 21 spring. DETAILED DESCRIPTION

[0021] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0022] Reference Figure 1-5 A piston pump with adjustable flow rate includes a shell 1 and two pump liquid tanks 10. The upper end surface of the shell 1 is provided with a movable port 3. The upper end surface of the shell 1 is provided with two positioning grooves 6. A driving motor 4 is arranged in one of the positioning grooves 6. The positioning groove 6 is used to realize the positioning and installation of the driving motor 4. After the driving motor 4 replaces the positioning groove 6, the movable gear 17 can be moved and adjusted. There is a distance between the upper end surface of the movable gear 17 and the upper inner wall of the shell 1, which is convenient for adjusting the position of the driving motor 4 after it is lifted up.

[0023] A limiting groove 7 is provided on the inner wall of the positioning groove 6, a limiting plate 18 is provided on the driving motor 4, an upper top groove 19 is provided on the upper end surface of the limiting plate 18, a positioning rod 20 is provided in the upper top groove 19 through an upper top mechanism, a positioning hole 8 is provided on the upper end surface of the shell 1, and a rotating chamber 11 and a movable chamber 12 are provided in the two pump liquid boxes 10. A reciprocating screw 14 extending into the rotating chamber 11 is rotatably provided on the upper inner wall of the shell 1. The two pump liquid boxes 10 are both cylindrical, but one of them is thicker than the other, so the size of the rotating chamber 11 and the movable chamber 12 are also different. After the piston plate 13 in the larger pump liquid box 10 moves up and down once, the flow rate of the material discharged is large, and vice versa.

[0024] The two reciprocating screws 14 are connected to the driving motor 4 through a rotating mechanism. A piston plate 13 is sealed and slidably provided in the active chamber 12. The piston plate 13 is connected to the reciprocating screw 14 through a connecting mechanism. The housing 1 is provided with a liquid inlet pipe 2 and a liquid outlet pipe 9 connected to the active chamber 12.

[0025] The lifting mechanism includes a spring 21 arranged in the upper groove 19, and the two ends of the spring 21 are elastically connected to the outer wall of the positioning rod 20 and the inner wall of the upper groove 19 respectively. The above-mentioned spring 21 realizes the lifting of the positioning rod 20, and the positioning rod 20 can be pushed into the positioning hole 8, thereby completing the stability of the position of the limit plate 18 in the limit groove 7.

[0026] The rotating mechanism includes a movable gear 17 arranged on the output shaft of the driving motor 4. Both reciprocating screws 14 are provided with a fixed gear 16. The fixed gear 16 cooperates with the movable gear 17. When the movable gear 17 moves with the driving motor 4 and engages with any fixed gear 16, it can drive the reciprocating screw 14 connected to the fixed gear 16 to rotate.

[0027] The connecting mechanism includes a connecting frame 15 threadedly mounted on the reciprocating screw 14. The connecting frame 15 is U-shaped and both ends are fixedly connected to the piston plate 13. Both ends of the connecting frame 15 slide through the bottom wall of the rotating chamber 11 and extend into the active chamber 12. Therefore, it has its own limit and will not rotate with the reciprocating screw 14.

[0028] A first valve is provided in the liquid inlet pipe 2 and a second valve is provided in the liquid outlet pipe 9. Both the first valve and the second valve are one-way valves. The first and second valves, which are one-way valves, control objects to flow in one direction.

[0029] A handle 5 is provided on the driving motor 4. The handle 5 and the limit plate 18 are welded to the driving motor 4. The handle 5 facilitates lifting the driving motor 4, and the welding connection ensures its stability.

[0030] When the utility model is used, after the driving motor 4 is started, it can drive the movable gear 17 to rotate, and the movable gear 17 drives the fixed gear 16 meshing with it to rotate, and the fixed gear 16 can drive the reciprocating screw 14 connected to it to rotate. When the reciprocating screw 14 rotates, the connecting frame 15 threadedly mounted thereon can drive the piston plate 13 to move back and forth up and down in the movable chamber 12. When the piston plate 13 moves up, the movable chamber 12 is in a negative pressure state. At this time, the liquid inlet pipe 2 can be used to suck in the object. When the piston plate 13 descends, the above-mentioned sucked object can be squeezed out and finally discharged through the liquid outlet pipe 9.

[0031] This solution sets two pump liquid boxes 10. The amounts of objects sucked in and discharged under the same state are different. One is large and the other is small. The corresponding selection can be made according to the actual situation. In addition, when the piston plate 13 in one of the pump liquid boxes 10 is damaged and cannot be used, the other pump liquid box 10 can be used, so that the device can still be forced to be used when a failure occurs.

[0032] To replace the pump liquid box 10, you only need to adjust the position of the drive motor 4. At this time, press the positioning rod 20 in the positioning hole 8, the positioning rod 20 compresses the spring 21 and disengages from the positioning hole 8, and then rotate the drive motor 4 with the help of the handle 5. The drive motor 4 drives the limit plate 18 to move and disengage from the limit groove 7 and enter the movable opening 3. Then, lift the drive motor 5 to disengage from the current positioning groove 6, and then move it horizontally to correspond to another positioning groove 6. Finally, the drive motor 4 descends and enters the positioning groove 6. Rotate the drive motor 4 to drive the limit plate 18 to move, and finally the positioning rod 20 corresponds to the positioning hole 8 and enters it.

[0033] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. A piston pump with adjustable flow, characterized in that: The invention comprises a housing (1) and two pump liquid boxes (10), wherein the upper end surface of the housing (1) is provided with a movable opening (3), the upper end surface of the housing (1) is provided with two positioning grooves (6), a driving motor (4) is arranged in one of the positioning grooves (6), a limiting groove (7) is arranged on the inner wall of the positioning groove (6), a limiting plate (18) is arranged on the driving motor (4), an upper top groove (19) is arranged on the upper end surface of the limiting plate (18), a positioning rod (20) is arranged in the upper top groove (19) through a lifting mechanism, and a positioning hole (8) is arranged on the upper end surface of the housing (1). ), the two pump liquid boxes (10) are each provided with a rotating chamber (11) and a movable chamber (12), the upper inner wall of the housing (1) is rotatably provided with a reciprocating screw (14) extending into the rotating chamber (11), the two reciprocating screws (14) are both connected to the drive motor (4) via a rotating mechanism, a piston plate (13) is sealed and slidably provided in the movable chamber (12), the piston plate (13) is connected to the reciprocating screw (14) via a connecting mechanism, and the housing (1) is provided with a liquid inlet pipe (2) and a liquid outlet pipe (9) connected to the movable chamber (12).

2. A piston pump with adjustable flow rate according to claim 1, characterized in that: The lifting mechanism comprises a spring (21) arranged in the lifting groove (19), and two ends of the spring (21) are elastically connected to the outer wall of the positioning rod (20) and the inner wall of the lifting groove (19) respectively.

3. A piston pump with adjustable flow rate according to claim 2, characterized in that: The rotating mechanism comprises a movable gear (17) arranged on the output shaft of the driving motor (4), and the two reciprocating screws (14) are each provided with a fixed gear (16), and the fixed gear (16) cooperates with the movable gear (17).

4. A piston pump with adjustable flow rate according to claim 3, characterized in that: The connection mechanism comprises a connection frame (15) threadedly sleeved on a reciprocating screw (14); the connection frame (15) is U-shaped and has two ends fixedly connected to the piston plate (13).

5. The flow-adjustable piston pump according to claim 4, characterized in that: A first valve is provided in the liquid inlet pipe (2) and a second valve is provided in the liquid outlet pipe (9), and both the first valve and the second valve are one-way valves.

6. The flow-adjustable piston pump according to claim 5, characterized in that: The drive motor (4) is provided with a handle (5), and the handle (5) and the limit plate (18) are both welded to the drive motor (4).

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