Controllable structure of oil output of pneumatic butter machine and pneumatic butter machine

Abstract

The utility model discloses a kind of oil output controllable structure of pneumatic butter machine and pneumatic butter machine, including inductor, be located on the cylinder of pneumatic butter machine, for real-time detection the reciprocating motion frequency of piston in cylinder;Controller, with the inductor electricity is connected;The controller can be according to the reciprocating frequency of piston recorded by inductor and the single oil output of pneumatic butter machine, calculate total oil output;Or, the controller receives user's target oil output set, calculates the reciprocating frequency required for piston, and makes piston run to stop after target frequency by controlling the on-off of solenoid valve of cylinder.The utility model is characterized in that the reciprocating frequency of piston can be used to obtain oil output or the reciprocating frequency of piston is controlled by inputting required oil output on controller, completely solve the problem of overfilling or insufficient filling caused by traditional pneumatic butter machine relying on artificial experience, significantly improve lubrication precision, reduce grease waste.

Description

Technical Field

[0001] This utility model relates to the field of pneumatic grease press technology, and in particular to a pneumatic grease press with controllable grease output structure and a pneumatic grease press. Background Technology

[0002] A pneumatic grease dispenser, also called a grease injector or oiler, is a tool specifically designed to inject grease (commonly known as "butter") under high pressure into the lubrication points of mechanical equipment. Its core function is to improve lubrication efficiency, reduce manual operation, and extend the life of machinery. It is widely used in automotive repair, industrial manufacturing, and construction machinery industries.

[0003] Traditionally, when adding grease to mechanical equipment, manual grease guns (commonly known as grease guns) or electric or pneumatic grease dispensers are used for single-point grease lubrication. The grease capacity of the bearing at the lubrication point can be calculated. However, traditional grease dispensing cannot control the amount of grease dispensed to achieve the required amount of lubricating grease. It relies solely on the maintenance worker's experience and judgment, which often results in adding too much grease, causing waste, or adding too little grease, leading to insufficient lubrication, poor lubrication effect, metal surface wear, increased temperature, and damage to the bearing. Utility Model Content

[0004] This invention addresses the problem of uncontrollable oil injection volume in pneumatic grease dispensers. The technical problem this invention aims to solve is to provide a structure for controllable oil output in a pneumatic grease dispenser and a pneumatic grease dispenser in order to solve the above-mentioned problem.

[0005] The technical solution adopted by this utility model to solve the above-mentioned technical problems is as follows: a controllable oil output structure for a pneumatic grease press, including a sensor installed on the cylinder of the pneumatic grease press for real-time detection of the number of reciprocating movements of the piston in the cylinder; a controller electrically connected to the sensor; the controller can calculate the total oil output based on the number of piston reciprocating movements recorded by the sensor and the single oil output of the pneumatic grease press; or the controller receives the target oil output set by the user, calculates the required number of piston reciprocating movements, and stops the piston after running to the target number of movements by controlling the on / off state of the solenoid valve of the cylinder.

[0006] A further preferred embodiment of this utility model is as follows: the sensor includes a magnetic ring and a magnetic sensitive element. The magnetic ring is fixed on the side wall of the piston, and the magnetic sensitive element is fixed on the outer side wall of the cylinder, for detecting changes in the magnetic field of the magnetic ring and outputting a signal to the controller.

[0007] A further preferred embodiment of this utility model is as follows: the magnetic sensitive element is one, located at the position corresponding to the highest or lowest point of the piston stroke. When the magnetic sensitive element is located at the highest point, the controller determines the number of round trips based on the time interval between two adjacent uplink received signals; when the magnetic sensitive element is located at the lowest point, the controller determines the number of round trips based on the time interval between two adjacent downlink received signals.

[0008] A further preferred embodiment of this utility model is: there are two magnetic sensitive elements, which are respectively located at the highest and lowest points of the piston stroke. Each time the piston completes one round-trip motion, it triggers the two magnetic sensitive elements in sequence and outputs two signals to the controller.

[0009] A further preferred embodiment of this utility model is: the sensor is a mechanical limit switch, which is located at the top or bottom of the chamber where the piston is located. When the piston moves to the end of its stroke, the limit switch is triggered, and the controller calculates the number of round trips based on the trigger interval.

[0010] A further preferred embodiment of this utility model is as follows: the sensors are mechanical limit switches A and B, which are located at the top and bottom of the chamber where the piston is located, respectively. When the piston moves down to the lowest point, it triggers limit switch B, and when it moves up to the highest point, it triggers limit switch A. After the two trigger combinations, the controller determines that it is a complete round trip.

[0011] A further preferred embodiment of this utility model is as follows: the cylinder body is made of transparent material, the sensor includes a light emitter and a receiver, the light emitter is disposed on the piston, and the receiver is disposed on the outer side wall of the cylinder, the receiver calculates the number of piston reciprocations by detecting the number of times the light signal emitted by the light emitter appears.

[0012] A further preferred embodiment of this utility model is as follows: the receiver is one and located at the position corresponding to the highest or lowest point of the piston stroke. When the receiver is at the highest point, the controller determines the number of round trips based on the time interval between two adjacent uplink received signals; when the receiver is at the lowest point, the controller determines the number of round trips based on the time interval between two adjacent downlink received signals.

[0013] A further preferred embodiment of this utility model is: the receiver has two receivers, which are respectively located at the corresponding positions of the highest point and the lowest point of the piston stroke. When the piston moves up to the highest point, it triggers the upper receiver, and when it moves down to the lowest point, it triggers the lower receiver. After two triggers, the controller determines that it is a complete round trip.

[0014] Another subject of this utility model: a pneumatic grease press, including a cylinder and a plunger pump, and also including the aforementioned pneumatic grease press with controllable oil output structure, wherein the piston in the cylinder reciprocates once to drive the plunger pump to output oil once, and the number of piston reciprocations is read by the controller and the oil output can be calculated.

[0015] Compared with existing technologies, this invention has the following advantages: By designing a sensor and controller on the cylinder of the pneumatic grease dispenser, the sensor records the number of piston reciprocations during use, and the controller calculates the total grease output based on the number of piston reciprocations. Users can also set the desired grease output through the controller's input interface. The controller automatically calculates the required number of piston reciprocations and controls the on / off state of the cylinder's solenoid valve, ensuring the piston precisely reaches the target number of reciprocations before stopping. This achieves precise metering, completely solving the problem of over- or under-lubrication caused by the reliance on manual experience in traditional pneumatic grease dispensers, significantly improving lubrication accuracy and reducing grease waste. Attached Figure Description

[0016] The present invention will be further described in detail below with reference to the accompanying drawings and preferred embodiments. However, those skilled in the art will understand that these drawings are drawn only for the purpose of explaining the preferred embodiments and therefore should not be regarded as a limitation on the scope of the present invention. In addition, unless otherwise specified, the drawings are only schematic representations of the composition or structure of the described objects and may contain exaggerated displays, and the drawings are not necessarily drawn to scale.

[0017] Figure 1 This is a three-dimensional structural diagram of the magnetic sensitive element of this utility model installed on a pneumatic grease machine; Figure 2 This utility model Figure 1 A sectional view; Figure 3 This is a cross-sectional view of the two magnetic sensitive elements of this utility model installed on a pneumatic grease machine; Figure 4 This is a three-dimensional structural diagram of the optimal limit switch of this utility model installed on a pneumatic grease machine; Figure 5 This utility model Figure 4 A sectional view; Figure 6 This is a cross-sectional view of limit switch A and limit switch B of this utility model installed on a pneumatic grease machine; Figure 7 This is a three-dimensional structural diagram of the receiver of this utility model installed on a pneumatic grease machine; Figure 8 This utility model Figure 7 A sectional view; Figure 9 This is a cross-sectional view of the two receivers of this utility model installed on a pneumatic grease machine.

[0018] In the diagram: 1. Cylinder; 2. Piston; 3. Magnetic ring; 4. Magnetic sensitive element; 5. Limit switch; 6. Limit switch A; 7. Limit switch B; 8. Light emitter; 9. Receiver; 10. Piston pump; 11. Seal. Detailed Implementation

[0019] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings. Those skilled in the art will appreciate that these descriptions are merely descriptive and exemplary and should not be construed as limiting the scope of protection of the present invention.

[0020] It should be noted that similar labels in the following figures indicate similar items; therefore, once an item is defined in one figure, it may not be further defined and explained in subsequent figures. Example 1

[0021] This embodiment mainly describes the controllable oil output structure of the pneumatic grease machine, as detailed below: like Figures 1 to 9 As shown, the pneumatic grease dispenser has a controllable grease output structure, including a sensor and a controller. The sensor is located on the cylinder 1 of the pneumatic grease dispenser and is used to sense the number of reciprocating movements of the piston 2 within the cylinder 1 in real time. The sensor is electrically connected to the controller and transmits the signal of the number of piston 2 movements to an external controller. Since the plunger pump 10 of the pneumatic grease dispenser is driven by the cylinder 1, each reciprocating movement of the piston 2 completes one cycle of grease dispensing and suction. During use, the sensor records the number of reciprocating movements of the piston 2. The grease output of the plunger pump 10 is fixed each time the piston 2 drives it. The controller calculates the total grease output based on the "single grease output" (i.e., the grease output of the plunger pump 10 corresponding to each reciprocating movement of the piston 2), which is suitable for real-time monitoring of the amount of grease dispensed. Users can also set the desired grease output through the controller's input interface (such as a touch screen or buttons). The controller automatically calculates the number of reciprocating movements required for the piston 2 and controls the on / off state of the solenoid valve of the cylinder 1, so that the piston 2 runs precisely to the target number of times and then stops, achieving quantitative dispensing.

[0022] By combining sensors and controllers, the problem of over- or under-lubrication caused by the reliance on manual experience in traditional pneumatic grease dispensers has been completely solved, significantly improving lubrication accuracy and reducing grease waste.

[0023] The sensor uses a non-contact magnetic induction design, such as Figures 1 to 3As shown, the sensor includes a magnetic ring 3 and a magnetic sensitive element 4. The magnetic sensitive element 4 is generally a magnetic switch or a Hall sensor. The side wall of the piston 2 has an annular groove and a sealing groove arranged circumferentially. The magnetic ring 3 is fixedly disposed within the annular groove, and the magnetic switch or Hall sensor is fixedly disposed on the outer side wall of the cylinder 1. There are two sealing grooves, located above and below the annular groove respectively. Each sealing groove contains a sealing element 11, which includes an aluminum ring and a sealing ring, with the sealing ring fixed to the aluminum ring. The sealing element can also be a rubber ring or a silicone ring. When the piston 2 reciprocates, the change in the magnetic field of the magnetic ring 3 triggers the magnetic switch to close or the Hall sensor to output a pulse signal. The magnetic induction structure has no mechanical wear, a fast response speed, and is suitable for high-frequency reciprocating scenarios. Furthermore, the separate design of the magnetic ring 3 and the magnetic switch / Hall sensor avoids grease contamination and improves reliability.

[0024] like Figure 2 As shown, one magnetic switch or Hall sensor can be provided, preferably two. When there is only one magnetic switch or Hall sensor, it is located on the outer wall of cylinder 1, corresponding to the highest (or lowest) point of piston 2's stroke. When the magnetic element 4 is at the highest point, the controller determines the number of round trips based on the time interval between two adjacent upward received signals. When the magnetic switch or Hall sensor is at the lowest point, a signal is triggered when piston 2 moves downward to that position, and the controller determines the number of round trips based on the time interval between two adjacent downward received signals. Similarly, when the magnetic switch or Hall sensor is at the highest point, a signal is triggered when piston 2 moves upward to that position, and the controller determines the number of round trips based on the time interval between two adjacent upward received signals.

[0025] like Figure 3 As shown, when there are two magnetic switches or Hall sensors, they are respectively located on the outer wall of cylinder 1, at the positions corresponding to the highest and lowest points of piston 2's stroke. Each time piston 2 completes one round trip, it sequentially triggers the two magnetic elements 4 and outputs two signals to the controller. The controller receives both signals to confirm a complete stroke, avoiding miscounting caused by piston 2 stopping midway. This dual-signal verification mechanism greatly reduces counting errors and is suitable for quantitative lubrication of precision bearings (such as those in aero engines).

[0026] like Figures 4 to 5As shown, the sensor can be replaced by a mechanical limit switch 5. Limit switch 5 is located at the top or bottom of the chamber containing piston 2. When limit switch 5 is at the top of the chamber, the piston strikes limit switch 5 when it reaches its highest point, triggering a signal. The controller determines the number of round trips based on the time interval between two adjacent upward trigger signals. When limit switch 5 is at the bottom of the chamber, the piston strikes limit switch 5 when it reaches its lowest point, triggering a signal. The controller determines the number of round trips based on the time interval between adjacent downward trigger signals. The mechanical structure is resistant to electromagnetic interference and is suitable for harsh industrial environments (such as mining machinery).

[0027] like Figure 6 As shown, the sensors can also be mechanical limit switches A6 and B7, located at the top and bottom of the chamber where piston 2 is located, respectively. When piston 2 moves downward, triggering limit switch B7, it records "downward movement complete"; when it moves upward, triggering limit switch A6, it records "upward movement complete". The combination of two triggers constitutes one complete round trip. By setting a dual limit switch 5 for two triggers, the actual movement state of piston 2 can be confirmed, avoiding false counts caused by air pressure fluctuations and improving the accuracy of the count.

[0028] Specifically, the cylinder body of cylinder 1 is made of transparent material, typically transparent acrylic, such as... Figure 8 and Figure 9 As shown, a light emitter 8 (such as an infrared LED) is fixed on the piston 2, and a receiver 9 (such as a photodiode) is provided on the outer wall of the cylinder 1. The light emitter 8 moves with the piston 2, and the receiver 9 calculates the number of round trips by detecting the number of times the light signal emitted by the light emitter appears. The photoelectric sensor is non-contact and wear-free, and the transparent cylinder body facilitates observation of the piston 2's movement, making it suitable for laboratories or high-precision assembly lines.

[0029] Specifically, receiver 9 can be configured as one or two, such as Figure 8 As shown, when there is only one receiver 9, it is located on the outer wall of cylinder 1, corresponding to the highest or lowest point of piston 2's stroke. When receiver 9 is at the highest point of piston 2's stroke, piston 2 moves upward to that position and triggers a signal. The controller determines the number of round trips based on the time interval between two consecutive upward triggers. Similarly, when receiver 9 is at the lowest point of piston 2's stroke, piston 2 moves downward to that position and triggers a signal. The controller determines the number of round trips based on the time interval between two consecutive downward triggers.

[0030] like Figure 9As shown, when there are two receivers 9, they are respectively located on the outer wall of cylinder 1, corresponding to the highest and lowest points of piston 2's stroke. When piston 2 moves upward to the highest point, it triggers the upper receiver 9; when it moves downward, it triggers the lower receiver 9. Two triggers confirm one round trip. The two receivers 9, in conjunction with the light emitter 8, eliminate errors caused by mechanical lag, improve counting accuracy, and are suitable for batch lubrication operations in automated production lines. Example 2

[0031] This embodiment mainly describes the pneumatic grease machine, as detailed below: like Figures 1 to 9 As shown, the pneumatic grease dispenser includes a cylinder 1, a plunger pump 10, and the aforementioned controllable grease output structure. The connection structure and working principle of the cylinder 1 and plunger pump 10 are existing technologies and will not be discussed in detail here. Please refer to the Chinese utility model patent "An Air Pump for an Oil Injection Pump" with authorization announcement number CN220870579U. In this utility model, the cylinder 1 corresponds to the air pump in the referenced document, and the plunger pump 10 corresponds to a plunger-type oil lifting mechanism. The grease output control structure is located on the cylinder 1. Each reciprocating stroke of the piston 2 of the cylinder 1 drives the plunger of the plunger pump 10 to complete one oil suction-discharge cycle via a connecting rod mechanism. The single discharge volume is a fixed value (e.g., 0.5 mL). The controller obtains the real-time number of piston 2 movements through sensors and converts it into the total oil output (e.g., 100 times corresponds to 50mL). Users can also set the precise amount of grease required for bearing lubrication through the controller's input interface (e.g., touch screen or buttons) (e.g., 12mL is required for automotive wheel hub bearings). The controller automatically calculates the number of times piston 2 needs to reciprocate and controls the on / off state of the solenoid valve of cylinder 1, so that piston 2 stops after precisely running to the target number of times, achieving quantitative filling and avoiding problems of excessive or insufficient grease.

[0032] In this invention, the controller can be a circuit board or module with signal acquisition, calculation and control output capabilities, such as a PLC, microcontroller, ARM board, or FPGA board.

[0033] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship that the utility model product is usually placed in during use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0034] The above provides a detailed description of the controllable oil output structure and the pneumatic grease machine provided by this utility model. Specific examples have been used to illustrate the principle and implementation of this utility model. The description of the above embodiments is only for the purpose of helping to understand this utility model and its core ideas. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principle of this utility model, and these improvements and modifications also fall within the protection scope of the claims of this utility model.

Claims

1. A pneumatic grease dispenser with controllable grease output, characterized in that: Includes a sensor, which is installed on the cylinder of the pneumatic grease machine, to detect the number of reciprocating movements of the piston in the cylinder in real time; A controller is electrically connected to the sensor. The controller can calculate the total oil output based on the number of piston reciprocations recorded by the sensor and the single oil output of the pneumatic grease dispenser; or, the controller receives the target oil output set by the user, calculates the required number of piston reciprocations, and controls the opening and closing of the solenoid valve of the cylinder to stop the piston after it reaches the target number of reciprocations. The sensor includes a magnetic ring and a magnetic sensitive element. The magnetic ring is fixed on the side wall of the piston, and the magnetic sensitive element is fixed on the outer side wall of the cylinder. It is used to detect changes in the magnetic field of the magnetic ring and output a signal to the controller. There is one magnetic sensitive element, which is located at the highest or lowest point of the piston stroke. When the magnetic sensitive element is at the highest point, the controller determines the number of reciprocations based on the time interval between two adjacent upward receiving signals; when the magnetic sensitive element is at the lowest point, the controller determines the number of reciprocations based on the time interval between two adjacent downward receiving signals; or, there are two magnetic sensitive elements, which are respectively located at the highest and lowest points of the piston stroke. Each time the piston completes one reciprocating motion, the two magnetic sensitive elements are triggered in sequence and output two signals to the controller.

2. A pneumatic grease dispenser with controllable grease output, characterized in that: Includes a sensor, which is installed on the cylinder of the pneumatic grease machine, to detect the number of reciprocating movements of the piston in the cylinder in real time; The controller is electrically connected to the sensor. The controller can calculate the total amount of oil dispensed based on the number of piston reciprocations recorded by the sensor and the amount of oil dispensed per stroke by the pneumatic grease machine. Alternatively, the controller can receive the target amount of oil dispensed by the user, calculate the required number of piston reciprocations, and stop the piston after running to the target number of strokes by controlling the opening and closing of the solenoid valve of the cylinder. The sensor is a mechanical limit switch, which is located at the top or bottom of the chamber where the piston is located. The limit switch is triggered when the piston moves to the end of its stroke, and the controller calculates the number of reciprocations based on the trigger interval.

3. A pneumatic grease dispenser with controllable grease output, characterized in that: Includes a sensor, which is installed on the cylinder of the pneumatic grease machine, to detect the number of reciprocating movements of the piston in the cylinder in real time; The controller is electrically connected to the sensor. The controller can calculate the total oil output based on the number of piston reciprocations recorded by the sensor and the single oil output of the pneumatic grease machine; or, the controller receives the target oil output set by the user, calculates the required number of piston reciprocations, and controls the opening and closing of the solenoid valve of the cylinder to make the piston stop after running to the target number of times. The sensor is a mechanical limit switch A and a limit switch B, which are located at the top and bottom of the chamber where the piston is located, respectively. When the piston moves down to the lowest point, it triggers limit switch B, and when it moves up to the highest point, it triggers limit switch A. The controller determines that the two trigger combinations constitute one complete round trip.

4. A pneumatic grease dispenser with controllable grease output, characterized in that: Includes a sensor, which is installed on the cylinder of the pneumatic grease machine, to detect the number of reciprocating movements of the piston in the cylinder in real time; A controller is electrically connected to the sensor. The controller can calculate the total oil output based on the number of piston reciprocations recorded by the sensor and the single oil output of the pneumatic grease dispenser; or, the controller receives the target oil output set by the user, calculates the required number of piston reciprocations, and controls the opening and closing of the solenoid valve of the cylinder to stop the piston after it reaches the target number of reciprocations; the cylinder body is made of transparent material, and the sensor includes a light emitter and a receiver. The light emitter is located on the piston, and the receiver is located on the outer wall of the cylinder. The receiver calculates the number of piston reciprocations by detecting the number of times the light signal emitted by the light emitter appears; there is one receiver, located at the corresponding position of the highest or lowest point of the piston stroke. When the receiver is at the highest point, the controller determines the number of reciprocations based on the time interval between two adjacent upward receiving signals; when the receiver is at the lowest point, the controller determines the number of reciprocations based on the time interval between two adjacent downward receiving signals; or, there are two receivers, located at the corresponding positions of the highest and lowest points of the piston stroke, respectively. When the piston moves upward to the highest point, it triggers the upper receiver, and when it moves downward to the lowest point, it triggers the lower receiver. After two triggers, the controller determines it as one complete reciprocation.

5. A pneumatic grease press, comprising a cylinder and a plunger pump, characterized in that: It also includes a controllable oil output structure for the pneumatic grease machine as described in any one of claims 1-4, wherein the piston in the cylinder drives the plunger pump to output oil once for each reciprocation, and the number of piston reciprocations is read by the controller and the oil output can be calculated.

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