Multi-head pump core convenient to mount and dismount

Abstract

The utility model discloses a multi-head pump core convenient to mount and dismount. The multi-head pump core comprises a pump barrel main body, a driving mechanism, a base, a bracket and a pump core, the driving mechanism comprises a cam shaft, a cam disc and a driving motor, the driving motor is installed at the lower end of the base, the cam shaft is vertically installed on the base, the cam disc is located in the middle of the cam shaft, and the pump core is located on one side of the middle of the cam shaft. One end of an automatic reset spring arranged at the front end of the pump core is limited and fixed in a groove in the front end of the pump core, meanwhile, a boss is installed on a mandrel of the pump core through a pin in an interference mode at the other end of the automatic reset spring, the front end of the pump core is connected with a cam disc through an arranged centerless grinding shaft, and then a cam bearing is driven by a driving motor to generate pressing and pushing force. Restoring force generated by a cam disc on the cam shaft acts on an automatic reset spring through the automatic reset spring to achieve reciprocating motion of a plunger on the pump core; and later maintenance, disassembly and reassembly of the pump core are more convenient and quicker.

Description

Technical Field

[0001] The utility model relates to the technical field of shield machine equipment, in particular to a multi-head pump core that is easy to install and disassemble. Background Art

[0002] The pump core of the multi-head pump is a consumable part. After long-term use under certain back pressure conditions, the grease displacement of the pump core will decrease linearly and cannot meet the displacement requirements. Therefore, the pump core of the multi-head pump needs to be replaced. Figure 3 As shown, due to the original design of the pump core, such as the GME07 and GME12 multi-head pumps, a plunger structure is used that uses a honing shaft and a honing hole. The cam bearing generates a thrust force, and the boss at the front end of the honing shaft is hung in the groove of the cam disc to generate a restoring force to achieve the reciprocating motion of the plunger. The difficulty caused by this structure for the installation of the pump core is that the pump core needs to be tilted at a certain angle so that the front end of the honing shaft can be hung in the groove of the cam disc. Correspondingly, an inclination angle is also required when removing the pump core, which greatly tests the proficiency of the installer, especially when the pump body of the multi-head pump is full of grease. It is even more difficult to operate. The honing shaft of the pump core is easy to fall off, and even after installation, the grease displacement test is required to determine whether it is installed in place. Due to the design of the front end boss of the pump core shaft, the manufacturing process is limited to honing, and the faster and more convenient centerless grinding process cannot be used, which makes it impossible to reduce the manufacturing cost of the product. Utility Model Content

[0003] The utility model discloses a multi-head pump core which is easy to install and disassemble, and solves the problems of complexity in later maintenance, disassembly and reassembly of the pump core and complexity in processing main structural parts.

[0004] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a multi-head pump core that is easy to install and disassemble, comprising a pump barrel body, a drive mechanism, a base, a bracket and a pump core;

[0005] The base is located at the lower end of the pump barrel body, and the lower end of the base is used to support the pump barrel body through a bracket. The driving mechanism is installed at the lower end of the base. The driving mechanism includes a camshaft, a cam disc and a driving motor. The driving motor is installed at the lower end of the base, and the camshaft is vertically installed on the base. The cam disc is located in the middle position of the camshaft, and the pump core is located on one side of the middle position of the camshaft. An automatic return spring is provided at the front end of the pump core, one end of the automatic return spring is fixed in the groove at the front end of the pump core, and the other end of the automatic return spring is installed on the core shaft of the pump core through a pin interference mounting boss. The front end of the pump core is connected to the cam disc through a centerless grinding shaft, and then the cam bearing is driven by the driving motor to generate a pressure thrust, and the restoring force generated by the cam disc on the camshaft is applied to the automatic return spring through the automatic return spring to realize the reciprocating motion of the plunger on the pump core.

[0006] Preferably, an upper bearing is provided at the upper end of the camshaft, and the upper bearing is fixed to the camshaft through an upper retaining spring and a camshaft shoulder. A lower bearing is provided at the lower end of the camshaft, and the lower bearing is fixed to the camshaft through a shoulder. A middle bearing is provided in the middle position of the camshaft, and retaining springs on both sides of the middle bearing barrel are fixed to the camshaft, and the camshaft is installed inside the base through the upper bearing, the middle bearing and the lower bearing.

[0007] Preferably, an agitator is provided inside the pump barrel body, and the lower end of the agitator is connected to the upper end of the camshaft at the bottom of the pump barrel body. The camshaft rotates to drive the agitator to rotate, thereby rotating the inside of the pump barrel body.

[0008] Preferably, the pump core as a whole is laterally locked on one side of the base through a threaded structure.

[0009] Preferably, an ultrasonic sensor is provided at the upper end of the pump barrel body to monitor the operating status inside the pump barrel body.

[0010] Preferably, the driving motor is connected to the lower end of the camshaft via a reduction gearbox.

[0011] Compared with the prior art, the present invention has the following beneficial effects:

[0012] 1. In the utility model, the automatic reset effect is achieved by pushing the replaced centerless grinding shaft and the automatic reset spring together. The installation of the pump core does not require a special installation angle, making the later maintenance, disassembly and reinstallation of the pump core more convenient and quick.

[0013] 2. In the present invention, the traditional pump core honing shaft and cam groove matching push and reset structure are replaced; the process difficulty of the pump core front end shaft is reduced, and it is replaced with a centerless grinding shaft, making the processing of the main structural parts simpler.

[0014] 3. In this utility model, the original cam disc connecting element is eliminated, and the lower bearing is moved to the bottom of the product to balance the forces on both sides of the cam shaft. An automatic return spring is added to the pump core, so that the restoring force generated by the cam disc before the transformation acts on the automatic return spring. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation to the present invention.

[0016] In the attached figure:

[0017] Figure 1 This is a schematic diagram of the overall structure of the multi-head pump of the utility model;

[0018] Figure 2 This is a schematic diagram of the partial details of the multi-head pump of the utility model;

[0019] Figure 3 This is a schematic diagram illustrating the tilted installation of an existing pump core;

[0020] Numbers in the figure: 1. Ultrasonic sensor; 2. Pump barrel body; 3. Agitator; 4. Pump core; 5. Base; 6. Camshaft; 7. Drive motor; 8. Bracket; 9. Cam disc; 10. Upper bearing; 11. Middle bearing; 12. Lower bearing; 13. Automatic return spring. DETAILED DESCRIPTION

[0021] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention and are not used to limit the present invention.

[0022] Example: Figure 1 and Figure 2As shown, a multi-head pump core that is easy to install and disassemble includes a pump barrel body 2, a driving mechanism, a base 5, a bracket 8 and a pump core 4; an ultrasonic sensor 1 is provided at the upper end of the pump barrel body 2 to monitor the operating status inside the pump barrel body 2; the base 5 is located at the lower end of the pump barrel body 2, and the lower end of the base 5 is used to support the pump barrel body 2 through a bracket 8, the driving mechanism is installed at the lower end of the base 5, the driving mechanism includes a cam shaft 6, a cam disc 9 and a driving motor 7, and the driving motor 7 is installed at the bottom At the lower end of the seat 5, the drive motor 7 is connected to the lower end of the camshaft 6 through a reduction gearbox; the camshaft 6 is vertically mounted on the base 5, the cam disc 9 is located in the middle of the camshaft 6, an upper bearing 10 is provided at the upper end of the camshaft 6, the upper bearing 10 is fixed to the camshaft 6 through an upper retaining ring and the shoulder of the camshaft 6, a lower bearing 12 is provided at the lower end of the camshaft 6, the lower bearing 12 is fixed to the camshaft 6 through a shaft shoulder, a middle bearing 11 is provided in the middle of the camshaft 6, and the middle bearing 11 is provided on both sides The retaining ring is fixed to the camshaft 6, and the camshaft 6 is installed inside the base 5 through the upper bearing 10, the middle bearing 11 and the lower bearing 12; the pump core 4 is located on one side of the middle position of the camshaft 6, and the pump core 4 is laterally locked on one side of the base 5 by the provided threaded structure; an agitator 3 is provided inside the pump barrel body 2, and the lower end of the agitator 3 is connected to the upper end of the camshaft 6 at the bottom of the pump barrel body 2. The camshaft 6 rotates, which drives the agitator 3 to rotate, thereby rotating the inside of the pump barrel body 2; An automatic return spring 13 is provided at the front end of the pump core 4, one end of the automatic return spring 13 is fixed in the groove at the front end of the pump core 4, and the other end of the automatic return spring 13 is installed on the core shaft of the pump core 4 through a pin interference mounting boss. The front end of the pump core 4 is connected to the cam disc 9 through a centerless grinding shaft, and then the cam shaft 6 is driven by the drive motor 7 to generate a pressure thrust, and the restoring force generated by the cam disc 9 on the cam shaft 6 is applied to the automatic return spring 13 through the automatic return spring 13 to realize the reciprocating motion of the plunger on the pump core 4.

[0023] Specific working principle:

[0024] First, the drive motor 7 starts, transmitting power to the camshaft 6 through the reduction gearbox. The camshaft 6 begins to rotate, driving the cam disc 9. The agitator 3 at the top end of the camshaft 6 is connected to the camshaft 6 at the bottom of the pump barrel body 2. The rotation of the camshaft 6 drives the agitator 3, stirring the liquid inside the pump barrel body 2. The front end of the pump core 4 is connected to the cam disc 9 via a centerless ground shaft. The rotation of the cam disc 9 generates a compressive thrust, which is transmitted to the pump core 4 via the automatic return spring 13. One end of the automatic return spring 13 is fixed in a groove at the front end of the pump core 4, and the other end is fixed to the core shaft of the pump core 4 by a pin. The restoring force of the cam disc 9 acts on the pump core 4 through the automatic return spring 13, causing the plunger to reciprocate. An ultrasonic sensor 1 is located at the top end of the pump barrel body 2 to monitor the operating status of the pump barrel body 2. This monitoring data can be used to adjust the speed of the drive motor 7 and the operating status of the pump core 4 in real time to ensure stable system operation. At the same time, the pump core 4 on one side is laterally locked to the side of the base 5 by a threaded structure, and during the operation of the installer, there is no need to tilt the pump core 4 to a certain angle so that the front end of the pump core 4 can be hung in the groove of the cam disc 9, thereby avoiding the problem that the shaft at the front end of the pump core 4 is easy to fall off, and at the same time eliminating the problem of judging whether the installation is in place by grease displacement detection after installation; accordingly, there is no need to tilt the angle when disassembling the pump core 4, making the later maintenance, disassembly and reassembly of the pump core 4 more convenient and quick.

[0025] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A multi-head pump core that is easy to install and disassemble, characterized by: It includes a pump barrel body, a driving mechanism, a base, a bracket and a pump core; The base is located at the lower end of the pump barrel body, and the lower end of the base is used to support the pump barrel body through a bracket. The driving mechanism is installed at the lower end of the base. The driving mechanism includes a camshaft, a cam disc and a driving motor. The driving motor is installed at the lower end of the base, and the camshaft is vertically installed on the base. The cam disc is located in the middle position of the camshaft, and the pump core is located on one side of the middle position of the camshaft. An automatic return spring is provided at the front end of the pump core, one end of the automatic return spring is fixed in the groove at the front end of the pump core, and the other end of the automatic return spring is installed on the core shaft of the pump core through a pin interference mounting boss. The front end of the pump core is connected to the cam disc through a centerless grinding shaft, and then the cam bearing is driven by the driving motor to generate a pressure thrust, and the restoring force generated by the cam disc on the camshaft is applied to the automatic return spring through the automatic return spring to realize the reciprocating motion of the plunger on the pump core.

2. The multi-head pump core that is easy to install and disassemble according to claim 1, characterized in that: An upper bearing is provided at the upper end of the camshaft, and the upper bearing is fixed to the camshaft through an upper retaining spring and a camshaft shoulder. A lower bearing is provided at the lower end of the camshaft, and the lower bearing is fixed to the camshaft through a shaft shoulder. A middle bearing is provided in the middle position of the camshaft, and retaining springs on both sides of the middle bearing barrel are fixed to the camshaft, and the camshaft is installed inside the base through the upper bearing, the middle bearing and the lower bearing.

3. The multi-head pump core that is easy to install and disassemble according to claim 1, characterized in that: An agitator is provided inside the pump barrel body, and the lower end of the agitator is connected to the upper end of the camshaft at the bottom of the pump barrel body. The camshaft rotates, driving the agitator to rotate and rotating the inside of the pump barrel body.

4. The multi-head pump core that is easy to install and disassemble according to claim 1, characterized in that: The pump core as a whole is laterally locked on one side of the base through a threaded structure.

5. The multi-head pump core that is easy to install and disassemble according to claim 1, characterized in that: An ultrasonic sensor is provided at the upper end of the pump barrel body to monitor the operating status inside the pump barrel body.

6. The multi-head pump core that is easy to install and disassemble according to claim 1, characterized in that: The driving motor is connected to the lower end of the camshaft via a reduction box.

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