Lubricating pump and pump head assembly

Abstract

The utility model relates to a lubricating pump and a pump head assembly which have the advantage of being stable in detection. The oil pressing assembly is installed at the upper end of the output shaft and rotates along with the output shaft, the oil pressing assembly comprises a transverse shaft perpendicularly connected with the output shaft and a movable pressing plate rotationally installed on the transverse shaft, the movable pressing plate can swing up and down around the transverse shaft, and the movable pressing plate can swing and tilt upwards under the resistance of lubricating grease when rotating towards the lubricating grease. The oil pressing assembly further comprises a limiting piece for limiting the maximum upward swinging angle of the movable pressing plate, and a magnet part is arranged on the side, away from the transverse shaft, of the movable pressing plate. The magnetic induction sensor is arranged in the pump base and located below the lowest point of the movable pressing plate, when the lubricating grease is too much, the movable pressing plate rotating along with the output shaft swings and tilts upwards around the transverse shaft, and the magnet part is separated from the induction range of the magnetic induction sensor; when the lubricating grease is little, the movable pressing plate swings downwards around the transverse shaft, and the magnetic induction sensor can sense the magnetic body part to feed back a low liquid level signal when the magnetic body part rotates to the position above the magnetic induction sensor.

Description

Technical Field

[0001] The utility model relates to a lubrication pump and a pump head assembly. Background Art

[0002] The lubrication pump is a key component of the centralized lubrication system. It can add grease to various parts of the equipment that need lubrication at regular times, fixed points and in fixed quantities through pipelines. The lubrication pump mainly includes an oil tank and a pump head assembly. The pump head assembly mainly includes a motor, a reduction mechanism, a transmission mechanism, a plunger pair, an oil distribution plate and a rotating oil pressure plate. The output shaft of the transmission mechanism extends from bottom to top to the oil tank above the oil distribution plate. The rotating oil pressure plate is fixedly installed on the output shaft and squeezes the grease in the oil tank downward as the output shaft rotates, so that the plunger pair can better suck the grease.

[0003] Before the grease in the oil tank runs out, it is necessary to remind the user to replace it in time to ensure that the lubrication system works uninterruptedly, thereby avoiding the problem of equipment damage due to lack of timely lubrication. The prior art generally installs a device for detecting the grease level in the oil tank, but there are certain problems. It is easily affected by the environment, temperature and grease, resulting in inaccurate detection or detection failure. For example, the probe is blocked, the mechanical detection component cannot be reset, etc., and the maintenance personnel cannot be reminded to replenish the grease in time, resulting in the lubrication system being unable to normally add grease to the equipment, which poses a great risk of equipment damage. Utility Model Content

[0004] The utility model aims to provide a pump head assembly which can stably detect the low liquid level of an oil tank. The utility model also aims to provide a lubrication pump using the pump head assembly.

[0005] The technical solution of the pump head assembly of the utility model is as follows: the pump head assembly comprises:

[0006] Pump seat;

[0007] A transmission mechanism including an output shaft extending upward from the pump seat into the oil tank;

[0008] The oil pressing assembly is mounted on the upper end of the output shaft and rotates with the output shaft. The oil pressing assembly includes a horizontal axis vertically connected to the output shaft and a movable pressing plate rotatably mounted on the horizontal axis. The movable pressing plate can swing up and down around the horizontal axis. When the movable pressing plate rotates toward the grease, it can swing upward under the resistance of the grease. The oil pressing assembly also includes a limiter to limit the maximum upward swing angle of the movable pressing plate. A magnet portion is provided on the side of the movable pressing plate away from the horizontal axis.

[0009] A magnetic induction sensor is arranged in the pump seat and is located below the lowest point of the movable pressure plate;

[0010] When there is more grease, the movable pressure plate that rotates with the output shaft swings upward around the horizontal axis and the magnet part leaves the sensing range of the magnetic induction sensor; when there is less grease, the movable pressure plate swings downward around the horizontal axis, and the magnet part rotates to be above the magnetic induction sensor and can be sensed by the magnetic induction sensor to feedback a low liquid level signal.

[0011] The beneficial effects of this solution are as follows: during operation, the horizontal axis rotates with the output shaft, thereby driving the movable pressure plate to rotate. The movable pressure plate will also swing up and down around the horizontal axis while rotating with the output shaft. When there is more grease in the oil tank, the resistance of the grease on the lower surface of the movable pressure plate is relatively large, and the movable pressure plate will swing upward around the horizontal axis and tilt up. Due to the existence of the limiter, the movable pressure plate can only swing within the set range, ensuring that the movable pressure plate still has the function of squeezing the grease downward; at the same time, the magnetic part on the movable pressure plate moves upward accordingly. At this time, even if the magnetic part moves from the magnetic induction sensor When the movable pressure plate passes over the device, the magnetic induction sensor cannot sense the magnetic field of the magnetic part because the magnetic part is far away from the magnetic induction sensor, and cannot trigger the low liquid level alarm; when the grease in the oil tank is less, the resistance of the grease to the movable pressure plate is not enough to keep the movable pressure plate at the upper swing angle. Under the action of the movable pressure plate's own gravity and the gravity of the magnetic part, the movable pressure plate swings down around the horizontal axis, driving the magnet part to move down. At this time, when the magnet part passes over the magnetic induction sensor again, it can be sensed by the magnetic induction sensor to sense the magnetic field, thereby feeding back a low liquid level alarm signal to the controller. It can be seen from this that the present application does not need to set up a separate structural part, but only improves on the basis of the original oil pressure assembly, and changes the original fixed pressure plate to a movable pressure plate that can swing around the horizontal axis. The movable pressure plate can achieve low liquid level detection in cooperation with the reed switch while maintaining the original oil pressure function. The scheme has a simple structure and a stable detection effect. Whether it is the change in ambient temperature or the influence of grease, it is not enough to limit the swing of the movable pressure plate and the detection of the reed switch.

[0012] Furthermore, a guide plate is fixed on the pump seat, the guide plate is located on the rotation path of the movable pressure plate, and the lower side surface of the guide plate facing the movable pressure plate is inclined to guide the movable pressure plate to swing downward around the horizontal axis for reset.

[0013] The beneficial effects of this solution: In order to expand the application scenarios of the product, for example, to adapt to lower temperature environments and to use more viscous grease, and to avoid the movable pressure plate being unable to swing to the lowest position under its own weight due to the excessive viscosity of the grease when the liquid level is low, the present application can also set a guide plate to reset the movable pressure plate. The movable pressure plate can be reset once by the guide plate every time the output shaft rotates one circle, thereby further improving the stability of low liquid level detection and expanding the application scope of the product.

[0014] Furthermore, an oil distribution plate with a plurality of oil holes is provided in the pump seat below the oil pressure assembly, and the magnetic induction sensor and / or the guide plate are mounted on the oil distribution plate.

[0015] Furthermore, the guide plate is arranged on a side away from the magnetic induction sensor in the horizontal plane of the pump seat. The beneficial effect of this solution is that if the guide plate and the magnetic induction sensor are arranged too close, the detection of the magnetic induction sensor may be interfered by the guide plate. For example, if there is a lot of grease, when the movable pressure plate swings down due to the guide plate, if the magnetic induction sensor detects the magnet part at this time, it will erroneously alarm the low liquid level. This problem can be avoided by arranging the guide plate and the magnetic induction sensor far apart.

[0016] Furthermore, the magnetic induction sensor is a reed switch.

[0017] Furthermore, the magnet part is a neodymium iron boron magnet installed at the lower part of the movable pressing plate.

[0018] The technical solution of the lubrication pump of the utility model is as follows: the lubrication pump comprises a pump head assembly and an oil tank installed at the upper opening of the pump head assembly, and the pump head assembly comprises:

[0019] Pump seat;

[0020] A transmission mechanism including an output shaft extending upward from the pump seat into the oil tank;

[0021] The oil pressing assembly is mounted on the upper end of the output shaft and rotates with the output shaft. The oil pressing assembly includes a horizontal axis vertically connected to the output shaft and a movable pressing plate rotatably mounted on the horizontal axis. The movable pressing plate can swing up and down around the horizontal axis. When the movable pressing plate rotates toward the grease, it can swing upward under the resistance of the grease. The oil pressing assembly also includes a limiter to limit the maximum upward swing angle of the movable pressing plate. A magnet portion is provided on the side of the movable pressing plate away from the horizontal axis.

[0022] A magnetic induction sensor is arranged in the pump seat and is located below the lowest point of the movable pressure plate;

[0023] When there is more grease, the movable pressure plate that rotates with the output shaft swings upward around the horizontal axis and the magnet part leaves the sensing range of the magnetic induction sensor; when there is less grease, the movable pressure plate swings downward around the horizontal axis, and the magnet part rotates to be above the magnetic induction sensor and can be sensed by the magnetic induction sensor to feedback a low liquid level signal.

[0024] Advantages of this solution: During operation, the horizontal shaft rotates with the output shaft, thereby driving the movable pressure plate to rotate. While the movable pressure plate rotates with the output shaft, it also swings up and down around the horizontal shaft. When there is more grease in the fuel tank, the resistance of the grease on the lower surface of the movable pressure plate is greater, and the movable pressure plate will swing upward and tilt around the horizontal shaft. Due to the existence of the limiting member, the movable pressure plate can only swing within a set range, ensuring that the movable pressure plate still has the function of squeezing the grease downward; at the same time, the magnet part on the movable pressure plate moves upward accordingly. At this time, even if the magnet part passes above the magnetic induction sensor, since the magnet part is far from the magnetic induction sensor, the magnetic induction sensor cannot sense the magnetic field of the magnet part and cannot trigger the low-level alarm; when there is less grease in the fuel tank, the resistance of the grease on the movable pressure plate is not enough to keep the movable pressure plate in the upward swing angle. Under the action of the self-weight of the movable pressure plate and the weight of the magnet part, the movable pressure plate swings downward around the horizontal shaft, driving the magnet part to move downward. At this time, when the magnet part passes above the magnetic induction sensor again, the magnetic field can be sensed by the magnetic induction sensor, thereby sending a low-level alarm signal to the controller. It can be seen from this that this application does not require additional structural components. It only improves on the original oil pressing assembly, changing the original fixed pressure plate to a movable pressure plate that can swing around the horizontal shaft. On the basis of maintaining the original oil pressing function, the movable pressure plate can cooperate with the reed switch to realize the detection of the low level. This solution has a simple structure and a stable detection effect. Whether it is the change of the ambient temperature or the influence of the grease, it is not enough to limit the swing of the movable pressure plate and the detection of the reed switch.

[0025] Further, a guide plate is fixed on the pump base. The guide plate is located on the rotation path of the movable pressure plate. The lower side surface of the side of the guide plate facing the movable pressure plate is inclined to guide the movable pressure plate to swing downward around the horizontal shaft for resetting.

[0026] Advantages of this solution: In order to expand the application scenarios of the product, for example, to adapt to a lower temperature environment and apply more viscous grease, to avoid the situation that the movable pressure plate cannot swing down to the lowest position under its own weight due to the excessive viscosity of the grease at low level, this application can also set a guide plate to reset the movable pressure plate. The movable pressure plate can be guided by the guide plate and reset once every time it rotates one circle with the output shaft, thereby further improving the stability of the low-level detection and expanding the application range of the product.

[0027] Further, a distribution disk with a plurality of oil passing holes is provided in the pump base below the oil pressing assembly. The magnetic induction sensor and / or the guide plate is installed on the distribution disk.

[0028] Further, the guide plate is arranged on the horizontal plane of the pump base on the side away from the magnetic induction sensor. Beneficial effects of this solution: If the guide plate and the magnetic induction sensor are set too close, the detection of the magnetic induction sensor may be interfered by the guide plate. For example, when there is a lot of grease, during the downward swing of the movable pressure plate due to the guide plate, if the magnetic induction sensor detects the magnet part at this time, a false low liquid level alarm will occur. Setting the guide plate away from the magnetic induction sensor avoids this problem.

[0029] Further, the magnetic induction sensor is a reed switch.

[0030] Further, the magnet part is a neodymium iron boron magnet installed at the lower part of the movable pressure plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] Figure 1 is a schematic structural diagram of an embodiment of a pump head assembly of the present invention;

[0032] Figure 2 is a three-dimensional structural diagram of the position relationship between the oil pressing assembly and the magnetic induction sensor Figure 1 ;

[0033] Figure 3 is a three-dimensional structural diagram of the position relationship between the oil pressing assembly and the magnetic induction sensor Figure 2 ;

[0034] Figure 4 is a three-dimensional view of the output shaft and the oil pressing assembly;

[0035] Figure 5 is a state diagram before the movable pressure plate and the guide plate are matched;

[0036] In the figure: 1 - pump base, 2 - output shaft, 3 - oil pressing assembly, 31 - horizontal shaft, 32 - movable pressure plate, 33 - fixed pressure plate, 34 - magnet part, 35 - limiting part, 36 - rotating sleeve, 4 - oil distribution disk, 5 - magnetic induction sensor, 6 - guide plate. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] In order to make the objectives, technical solutions and advantages of the present invention clearer, the present invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention, that is, the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Usually, the components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0038] Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the present invention claimed, but merely represents selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts fall within the scope of protection of the present invention.

[0039] It should be noted that relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any actual relationship or order between these entities or operations. Moreover, the terms "comprising", "including" or any other variant thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device comprising a series of elements not only includes those elements, but also includes other elements not expressly listed, or elements inherent to such process, method, article or device. Without further limitation, an element defined by the statement "comprising a..." does not exclude the presence of additional identical elements in the process, method, article or device comprising the element.

[0040] The features and performance of the present invention will be further described in detail below in conjunction with embodiments.

[0041] An embodiment of a pump head assembly of the present invention: The pump head assembly is the core part of a lubricating pump. As Figures 1-5 shown, it mainly includes a pump base 1, an oil distribution plate 4, a transmission mechanism, a pressure oil assembly 3, a magnetic induction sensor 5, as well as a monitor, a motor, a reduction mechanism, an eccentric wheel mechanism, a plunger pair, etc. not shown in the figure.

[0042] As Figure 1 shown, the pump base 1 includes a pump housing and an inner cavity. Most of the other components in the pump head assembly are installed outside the pump housing or in the inner cavity. The upper part of the pump base 1 has an opening of the inner cavity, and the oil distribution plate 4 is installed at the opening. The oil distribution plate 4 is a circular plate with holes. Above the oil distribution plate 4 is used to receive the lubricating grease from the fuel tank. Below the oil distribution plate 4 mainly includes components such as a plunger pair, a transmission mechanism, a reduction mechanism, and a motor. The lubricating grease falls from the fuel tank onto the oil distribution plate 4, is squeezed by the rotating pressure oil assembly 3, and then moves downward through the holes on the oil distribution plate 4 to the plunger pair. The plunger pair is driven by the motor, the reduction mechanism, and the transmission mechanism to suck and pump out the lubricating grease, and the friction pair can be lubricated through the pipeline.

[0043] The transmission mechanism mainly refers to the transmission components between the reduction mechanism and the plunger pair, mainly including the output shaft 2, the eccentric wheel mechanism, etc. The output shaft 2 is arranged vertically along the axis of the pump head assembly, and the upper end of the output shaft 2 can extend through the oil distribution disc 4 to the lower part of the fuel tank. The oil pressing assembly 3 is installed at the upper end of the output shaft 2 and rotates with the rotation of the output shaft 2. As Figures 2-4 shown, the oil pressing assembly 3 mainly includes a horizontal shaft 31 vertically connected to the output shaft 2 and a movable pressing plate 32 rotatably mounted on the horizontal shaft 31. The movable pressing plate 32 is a rectangular plate, one side of which is fixed to the rotating sleeve 36. The rotating sleeve 36 is sleeved on the horizontal shaft 31, and a limiting member 35 is fixed on the rotating sleeve 36. The limiting member 35 is a rectangular strip, and the upper surface of the limiting member 35 forms an obtuse angle with the upper surface of the movable pressing plate 32. The oil pressing assembly 3 further includes a fixed pressing plate 33. The fixed pressing plate 33 is horizontally arranged, and the horizontal shaft 31 is fixed relative to the fixed pressing plate 33. The lower surface of the limiting member 35 can be in limiting cooperation with the upper surface of the fixed pressing plate 33, so as to limit the range of the upward swing angle of the movable pressing plate 32, so that the movable pressing plate 32 can only swing within a limited acute angle range. Chamfer structures are respectively arranged at the upper and lower sides of the side of the movable pressing plate 32 away from the horizontal shaft 31, and a magnet part 34 is installed or fixed on the lower surface of the side of the movable pressing plate 32 away from the horizontal shaft 31, such as embedding or pressing a neodymium iron boron magnet.

[0044] As Figure 2 shown, a magnetic induction sensor 5 is arranged at a certain position on the oil distribution disc 4. The magnetic induction sensor 5 is arranged in the pump base 1 and is located below the lowest point of the movable pressing plate 32. In this embodiment, the magnetic induction sensor 5 adopts a reed switch. The reed switch and the magnet part 34 are located on the same circle with the output shaft 2 as the center, so that the magnet part 34 can pass directly above the reed switch when rotating around the output shaft 2. The signal wire of the reed switch is connected to the monitor from the inner cavity of the pump base 1. An alarm circuit is arranged on the monitor. When the reed switch senses the magnet part 34, the alarm circuit is turned on, and the monitor can display and send a low liquid level alarm signal to the maintenance personnel for them to know, so as to replenish the lubricating grease in time.

[0045] During operation, the horizontal shaft 31 rotates with the output shaft 2, thereby driving the movable pressure plate 32 to rotate. While the movable pressure plate 32 rotates with the output shaft 2, it also swings up and down around the horizontal shaft 31. When there is more grease in the fuel tank, the resistance of the grease on the lower surface of the movable pressure plate 32 is greater, and the movable pressure plate 32 will swing upward and tilt around the horizontal shaft 31. Due to the existence of the limiting member 35, the movable pressure plate 32 can only swing within a set range, ensuring that the movable pressure plate 32 still has the function of squeezing the grease downward; at the same time, the magnet part 34 on the movable pressure plate 32 moves upward accordingly. At this time, even if the magnet part 34 passes above the magnetic induction sensor 5, since the magnet part 34 is far from the magnetic induction sensor 5, the magnetic induction sensor 5 cannot sense the magnetic field of the magnet part 34 and cannot trigger the low liquid level alarm; when there is less grease in the fuel tank, the resistance of the grease to the movable pressure plate 32 is not enough to keep the movable pressure plate 32 in the upper swing angle. Under the action of the self-gravity of the movable pressure plate 32 and the gravity of the magnet part 34, the movable pressure plate 32 swings downward around the horizontal shaft 31, driving the magnet part 34 to move downward. At this time, when the magnet part 34 passes above the magnetic induction sensor 5 again, the magnetic field can be sensed by the magnetic induction sensor 5, thereby feeding back a low liquid level alarm signal to the controller; at the same time, within each rotation of the movable pressure plate 32 with the output shaft 2, it can be guided by the guide plate 6 and reset once, avoiding the situation that the movable pressure plate 32 cannot swing downward to the lowest position under its own weight due to the overly viscous grease at low liquid level, thereby further improving the stability of low liquid level detection and expanding the application range of the product. It can be seen from this that this application does not require an additional structural member, but only improves on the basis of the original oil pressing assembly 3, changing the originally fixed pressure plate to a movable pressure plate 32 that can swing around the horizontal shaft 31. On the basis of maintaining the original oil pressing function, the movable pressure plate 32 can cooperate with the reed switch to realize the detection of low liquid level. This solution has a simple structure and a stable detection effect. Whether it is the change of ambient temperature or the influence of grease, it is not enough to limit the swing of the movable pressure plate 32 and the detection of the reed switch.

[0046] Embodiment of the lubricating pump of this application: The lubricating pump includes a pump head assembly and a fuel tank installed at the upper opening of the pump head assembly. The structure of the pump head assembly is the same as that in each embodiment of the above pump head assembly and will not be described in detail.

[0047] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. The patent protection scope of the present invention is subject to the claims. Any equivalent structural changes made by using the description and drawings of the present invention shall be included in the protection scope of the present invention by the same token.

Claims

1. A pump head assembly, characterized in that: include: Pump seat; A transmission mechanism including an output shaft extending upward from the pump seat into the oil tank; The oil pressing assembly is mounted on the upper end of the output shaft and rotates with the output shaft. The oil pressing assembly includes a horizontal axis vertically connected to the output shaft and a movable pressing plate rotatably mounted on the horizontal axis. The movable pressing plate can swing up and down around the horizontal axis. When the movable pressing plate rotates toward the grease, it can swing upward under the resistance of the grease. The oil pressing assembly also includes a limiter to limit the maximum upward swing angle of the movable pressing plate. A magnet portion is provided on the side of the movable pressing plate away from the horizontal axis. A magnetic induction sensor is arranged in the pump seat and is located below the lowest point of the movable pressure plate; When there is more grease, the movable pressure plate that rotates with the output shaft swings upward around the horizontal axis and the magnet part leaves the sensing range of the magnetic induction sensor; when there is less grease, the movable pressure plate swings downward around the horizontal axis, and the magnet part rotates to be above the magnetic induction sensor and can be sensed by the magnetic induction sensor to feedback a low liquid level signal.

2. The pump head assembly according to claim 1, characterized in that: A guide plate is fixed on the pump seat, the guide plate is located on the rotation path of the movable pressure plate, and the lower side surface of the guide plate facing the movable pressure plate is inclined to guide the movable pressure plate to swing downward around the horizontal axis for reset.

3. The pump head assembly according to claim 2, characterized in that: An oil distribution plate with a plurality of oil holes is arranged below the oil pressure assembly in the pump seat, and a magnetic induction sensor and / or a guide plate are mounted on the oil distribution plate.

4. The pump head assembly according to claim 2, characterized in that: The guide plate is arranged in the horizontal plane of the pump seat at a side away from the magnetic induction sensor.

5. The pump head assembly according to any one of claims 1 to 4, characterized in that: The magnetic induction sensor is a reed switch.

6. The pump head assembly according to any one of claims 1 to 4, characterized in that: The magnet part is a neodymium iron boron magnet installed at the lower part of the movable pressing plate.

7. Lubrication pump, characterized in that: The pump head assembly comprises a pump head assembly and an oil tank installed at the upper opening of the pump head assembly. The pump head assembly comprises: Pump seat; A transmission mechanism including an output shaft extending upward from the pump seat into the oil tank; The oil pressing assembly is mounted on the upper end of the output shaft and rotates with the output shaft. The oil pressing assembly includes a horizontal axis vertically connected to the output shaft and a movable pressing plate rotatably mounted on the horizontal axis. The movable pressing plate can swing up and down around the horizontal axis. When the movable pressing plate rotates toward the grease, it can swing upward under the resistance of the grease. The oil pressing assembly also includes a limiter to limit the maximum upward swing angle of the movable pressing plate. A magnet portion is provided on the side of the movable pressing plate away from the horizontal axis. A magnetic induction sensor is arranged in the pump seat and is located below the lowest point of the movable pressure plate; When there is more grease, the movable pressure plate that rotates with the output shaft swings upward around the horizontal axis and the magnet part leaves the sensing range of the magnetic induction sensor; when there is less grease, the movable pressure plate swings downward around the horizontal axis, and the magnet part rotates to be above the magnetic induction sensor and can be sensed by the magnetic induction sensor to feedback a low liquid level signal.

8. The lubrication pump according to claim 7, characterized in that: A guide plate is fixed on the pump seat, the guide plate is located on the rotation path of the movable pressure plate, and the lower side surface of the guide plate facing the movable pressure plate is inclined to guide the movable pressure plate to swing downward around the horizontal axis for reset.

9. The lubrication pump according to claim 8, characterized in that: An oil distribution plate with a plurality of oil holes is arranged below the oil pressure assembly in the pump seat, and a magnetic induction sensor and / or a guide plate are mounted on the oil distribution plate.

10. The lubrication pump according to claim 8, characterized in that: The guide plate is arranged in the horizontal plane of the pump seat at a side away from the magnetic induction sensor.

11. The lubrication pump according to any one of claims 7 to 10, characterized in that: The magnetic induction sensor is a reed switch.

12. The lubrication pump according to any one of claims 7 to 10, characterized in that: The magnet part is a neodymium iron boron magnet installed at the lower part of the movable pressing plate.

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