High-precision valveless plunger pump capable of freely adjusting flow

Abstract

The utility model discloses a high-precision valveless plunger pump capable of freely adjusting flow, which is characterized in that the volume of the whole pump is reduced through an adapter, the movement accuracy of a piston rod of a pump body is ensured, the flow precision of the pump body is greatly improved, the angle of a piston cylinder body is adjusted to adjust the flow, and the flow requirements of various places are met. A motor body of the motor is fixed to one side plate of the supporting plate, the adjusting plate is arranged on the other side plate of the supporting plate, a plunger pump cylinder body is fixedly arranged on the upper side of the adjusting plate, an adjusting long hole is formed in the connecting position of the supporting plate and the adjusting plate, and the adjusting plate and the supporting plate are fixed through an adjusting bolt penetrating through the adjusting long hole. Two ends of the steering gear are respectively connected with a power output shaft of the motor and a plunger pump piston rod, and the plunger pump cylinder body and the plunger pump piston rod are made of ceramics; the plunger pump can be widely applied to the field of plunger pumps.

Description

Technical Field

[0001] The utility model relates to a valveless plunger pump capable of freely adjusting flow rate with high precision, belonging to the technical field of plunger pumps. Background Art

[0002] Micro plunger pumps are currently being used in more and more areas, but their own shortcomings are also obvious. It is difficult to meet the needs of applications with high precision and variable flow rates. The volume and failure rate of the micro plunger pump are increased by auxiliary monitoring and correction systems. Further research found that the main reason affecting the flow accuracy is that the piston rod and piston rod of the plunger pump are deformed due to wear, resulting in an increase in the fit clearance and a decrease in accuracy. Therefore, how to study a high-precision plunger pump that can freely adjust the flow has always been one of the research focuses of technical personnel in this field. Utility Model Content

[0003] The utility model overcomes the shortcomings of the prior art and provides a high-precision freely adjustable flow valveless plunger pump. The volume of the whole machine is reduced by an adapter and the movement accuracy of the pump piston rod is ensured, thereby greatly improving the flow accuracy of the pump body. The flow can be adjusted by adjusting the angle of the piston cylinder to meet the flow requirements of various places.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is: a high-precision freely adjustable flow valveless plunger pump, comprising a motor, a plunger pump cylinder and a plunger pump piston rod, the motor is connected to the plunger pump piston rod through a power steering mechanism, the plunger pump piston rod is matched and inserted into the plunger pump cylinder, and performs linear reciprocating motion under the drive of the motor, comprising a support plate, an adjustment plate and a steering gear, the support plate is L-shaped structure, the motor body is fixed on a side plate of the support plate, the adjustment plate is arranged on the other side plate of the support plate, the plunger pump cylinder is fixed on the upper side of the adjustment plate, and an adjustment long hole is arranged at the connection between the support plate and the adjustment plate, the adjustment plate and the support plate are fixed by an adjustment bolt passing through the adjustment long hole, the two ends of the steering gear are respectively connected to the power output shaft of the motor and the plunger pump piston rod, and the plunger pump cylinder and the plunger pump piston rod are made of ceramic.

[0005] The structure of the steering gear is as follows: it includes a steering gear body, a first connecting sleeve, a connecting rod and a second connecting sleeve. The steering gear body is an L-shaped structure. One end of the steering gear body is plugged and fixed with the power output shaft of the motor. A groove is integrally provided on the upper side of the other end of the steering gear body. The first connecting sleeve is plugged and fixed on the piston rod of the plunger pump. The second connecting sleeve is movably plugged in the groove. The first connecting sleeve and the second connecting sleeve are connected by a connecting rod. There is an angle between the power output shaft of the motor and the piston rod of the plunger pump.

[0006] The direction of the adjusting long hole is perpendicular to the direction of the power output shaft of the motor, and the angle between the power output shaft of the motor and the piston rod of the plunger pump is adjusted by adjusting the bolt.

[0007] The motor is provided with a frequency converter, through which the rotation speed of the motor can be adjusted.

[0008] Compared with the prior art, the utility model has the following beneficial effects: in the utility model, an adjusting bolt is used to adjust the angle between the power output shaft of the motor and the piston rod of the plunger pump, so as to adjust the piston rod of the plunger pump, thereby achieving the purpose of adjusting the flow rate; the plunger pump cylinder body and the plunger pump piston rod are made of ceramic to achieve the purpose of not being easy to deform and being resistant to high temperature; the use of a steering gear not only greatly reduces the overall volume of the structure, but also accurately transmits power. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] The utility model is further described below in conjunction with the accompanying drawings.

[0010] Figure 1 It is a structural schematic diagram of the utility model.

[0011] Figure 2 It is a bottom stereoscopic schematic diagram of the utility model.

[0012] Figure 3 It is a schematic diagram of the exploded structure of the utility model.

[0013] Figure 4 The structure diagram of the steering gear in the utility model is shown in FIG. Figure 1 .

[0014] Figure 5 The structure diagram of the steering gear in the utility model is shown in FIG. Figure 2 .

[0015] In the figure: 1 is the motor, 2 is the plunger pump cylinder, 3 is the plunger pump piston rod, 4 is the support plate, 5 is the adjustment plate, 6 is the steering gear, 61 is the steering gear body, 62 is the first connecting sleeve, 63 is the connecting rod, 64 is the second connecting sleeve 64, 65 are grooves, 7 is the adjustment long hole, and 8 is the adjustment bolt. Implementation

[0016] The present invention will be further described below in conjunction with specific embodiments.

[0017] like Figure 1 to Figure 5As shown, the utility model is a high-precision freely adjustable flow valveless plunger pump, comprising a motor 1, a plunger pump cylinder 2 and a plunger pump piston rod 3, the plunger pump cylinder 2 and the plunger pump piston rod 3 are made of ceramic, the motor 1 is connected to the plunger pump piston rod 3 through a steering gear 6, the plunger pump piston rod 3 is matched and inserted into the plunger pump cylinder 2, and performs linear reciprocating motion under the drive of the motor 1, comprising a support plate 4, an adjustment plate 5 and a steering gear 6, the support plate 4 is an L-shaped structure, the body of the motor 1 is fixed on a side plate of the support plate 4, the adjustment plate 5 is arranged on the other side plate of the support plate 4, the plunger pump cylinder 2 is fixedly arranged on the upper side of the adjustment plate 5, and an adjustment long hole 7 is arranged at the connection between the support plate 4 and the adjustment plate 5, the adjustment plate 5 and the support plate 4 are fixed by an adjustment bolt 8 penetrating the adjustment long hole 7, the direction of the adjustment long hole 7 is perpendicular to the direction of the power output shaft of the motor 1, and the angle between the power output shaft of the motor 1 and the plunger pump piston rod 3 is adjusted by the adjustment bolt 8.

[0018] The structure of the steering gear 6 is as follows: it includes a steering gear body 61, a first connecting sleeve 62, a connecting rod 63 and a second connecting sleeve 64. The steering gear body 61 is an L-shaped structure. One end of the steering gear body 61 is plugged and fixed to the power output shaft of the motor 1. A groove 65 is integrally provided on the upper side of the other end of the steering gear body 61. The first connecting sleeve 62 is plugged and fixed on the plunger pump piston rod 3. The second connecting sleeve 64 is movably plugged into the groove 65. The first connecting sleeve 62 and the second connecting sleeve 64 are connected by a connecting rod 63.

[0019] In addition, the motor 1 in the present invention can also adjust the speed through a frequency converter, which can also achieve the adjustment of the flow rate.

[0020] In the utility model, the angle between the power output shaft of the motor 1 and the plunger pump piston rod 3 is adjusted by using the adjusting bolt 8, so as to adjust the plunger pump piston rod 3, thereby achieving the purpose of adjusting the flow rate. The plunger pump cylinder 2 and the plunger pump piston rod 3 are made of ceramic to achieve the purpose of not being easily deformed and resistant to high temperature. The use of the steering gear 6 not only greatly reduces the overall volume of the structure, but also accurately transmits power.

[0021] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in this field without departing from the purpose of the present invention.

Claims

1. A high-precision, freely adjustable flow valveless plunger pump, comprising a motor (1), a plunger pump cylinder (2) and a plunger pump piston rod (3), wherein the motor (1) is connected to the plunger pump piston rod (3) via a power steering mechanism, and the plunger pump piston rod (3) is matched and inserted into the plunger pump cylinder (2), and performs linear reciprocating motion under the drive of the motor (1), characterized in that: The invention comprises a support plate (4), an adjustment plate (5) and a steering gear (6), wherein the support plate (4) is in an L-shaped structure, the body of the motor (1) is fixed on one side plate of the support plate (4), the adjustment plate (5) is arranged on the other side plate of the support plate (4), the plunger pump cylinder body (2) is fixedly arranged on the upper side of the adjustment plate (5), an adjustment slot (7) is arranged at the connection between the support plate (4) and the adjustment plate (5), the adjustment plate (5) and the support plate (4) are fixed by an adjustment bolt (8) penetrating the adjustment slot (7), and the two ends of the steering gear (6) are respectively connected to the power output shaft of the motor (1) and the plunger pump piston rod (3), and the plunger pump cylinder body (2) and the plunger pump piston rod (3) are made of ceramic.

2. A high-precision freely adjustable flow valveless plunger pump according to claim 1, characterized in that: The structure of the steering gear (6) is as follows: it comprises a steering gear body (61), a first connecting sleeve (62), a connecting rod (63) and a second connecting sleeve (64); the steering gear body (61) is in an L-shaped structure; one end of the steering gear body (61) is plugged and fixed to the power output shaft of the motor (1); a groove (65) is integrally provided on the upper side of the other end of the steering gear body (61); the first connecting sleeve (62) is plugged and fixed to the piston rod (3) of the plunger pump; the second connecting sleeve (64) is movably plugged into the groove (65); the first connecting sleeve (62) and the second connecting sleeve (64) are connected via the connecting rod (63); and an angle exists between the power output shaft of the motor (1) and the piston rod (3) of the plunger pump.

3. A high-precision freely adjustable flow valveless plunger pump according to claim 2, characterized in that: The direction of the adjusting long hole (7) is perpendicular to the direction of the power output shaft of the motor (1), and the angle between the power output shaft of the motor (1) and the piston rod (3) of the plunger pump is adjusted by means of the adjusting bolt (8).

4. A high-precision freely adjustable flow valveless plunger pump according to claim 1 or 3, characterized in that: The motor (1) is provided with a frequency converter, through which the rotation speed of the motor (1) can be adjusted.

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