Oil injector

Abstract

The utility model discloses an oil injector which comprises a main machine and an oil cup detachably connected with the main machine. The oil cup comprises a cup body, an oil pressing disc and a screw, an oil cavity, a mounting opening and an oil outlet are formed in the cup body, the mounting opening and the oil outlet are communicated with the oil cavity, the oil cavity is used for being filled with grease, the oil pressing disc is arranged in the oil cavity in a sliding mode, and the screw penetrates through the center of the oil pressing disc and is in threaded connection with the oil pressing disc; the main machine comprises a driving module, the driving module is in transmission connection with the screw rod and is used for driving the screw rod to rotate, and the screw rod rotates to drive the oil pressing disc to move in the extending direction of the oil cavity, so that grease is automatically extruded out of the oil outlet through the driving module to complete oil injection; therefore, the problem of insufficient or excessive lubrication easily caused by manual oil injection is solved.

Description

TECHNICAL FIELD

[0001] The utility model relates to grease lubrication technical field especially relates to an oil injector. BACKGROUND

[0002] In the process of manufacturing industry towards automation, mechanical equipment production is accelerating to intelligent, unmanned transformation. A large number of core equipment needs to be continuously operated to ensure production continuity, or in narrow, high-risk and other positions that manual operation is difficult to reach, accurate and stable lubrication protection becomes the key to stable operation of equipment.

[0003] However, the current lubrication technology has certain short board, most of the lubricating grease on the market still relies on traditional oil cup packaging, and manual operation is needed to frequently push the oil pressing disc to complete oil injection, if the manual operation is abnormal, lubrication deficiency or excess is easy to cause, and equipment wear is accelerated. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing an oil injector, which aims to solve the problem of current manual oil injection, if the manual operation is abnormal, lubrication deficiency or excess is easy to cause, and equipment wear is accelerated.

[0005] The utility model provides an oil injector, the oil injector includes host computer and the oil cup of detachable connection with host computer,

[0006] The oil cup includes cup body, oil pressing disc and screw rod, the oil cavity is arranged in the cup body, and the mounting port and the oil outlet are communicated with the oil cavity, the oil cavity is used for filling grease, the oil pressing disc is slidably arranged in the oil cavity, the screw rod is arranged at the center position of the oil pressing disc and is in threaded connection with the oil pressing disc,

[0007] The host computer includes drive module, the drive module is in transmission connection with the screw rod and is used for driving the screw rod to rotate, the rotation of the screw rod can drive the oil pressing disc to move along the extension direction of the oil cavity, wherein the rotation movement output by the drive module is not more than 100 revolutions per minute.

[0008] In one of the embodiments, the drive module includes drive motor and speed reducer, the drive motor and the speed reducer are integrated as an integrated module.

[0009] Alternatively, the drive module is a direct drive motor.

[0010] In one of the embodiments, the oil injector further includes a shaft coupling, one end of the shaft coupling is connected with the output shaft of the drive module, and the other end is formed with a first connecting part.

[0011] The screw rod comprises a rod body penetrating through the oil pressing disc and a head located at the end of the rod body, and a second connecting part is formed on the head, the first connecting part is detachably connected with the second connecting part, and is used for transmitting the rotary motion output by the driving module to the second connecting part.

[0012] In one embodiment, the first connecting part is a hexagonal joint formed on the head, and the second connecting part is a hexagonal groove formed on the shaft coupling.

[0013] In one embodiment, the screw rod comprises a rod body penetrating through the oil pressing disc and a head located at the end of the rod body, and the driving module is drivingly connected with the head; a smooth rod section is formed on the end of the rod body away from the head, a threaded rod section is formed between the smooth rod section and the head, the screw rod is threadedly connected with the oil pressing disc in the threaded rod section, the smooth rod section is used for releasing the threaded connection between the screw rod and the oil pressing disc when the oil pressing disc moves to the limit position; and / or,

[0014] The oil cup comprises a sealing ring, a sealing groove is formed on the circumferential outer wall of the oil pressing disc, and the sealing ring is arranged in the sealing groove and elastically abuts between the groove wall of the sealing groove and the oil cavity wall of the cup body.

[0015] In one embodiment, the host further comprises a host shell and a protective cover, the driving module is mounted in the host shell, and the protective cover is sleeved on the host shell and is used for detachably connecting with the cup body to integrate the oil cup, the host shell and the protective cover as a whole.

[0016] In one embodiment, a first connecting thread is formed on the opening of the radial outer wall of the cup body, a second connecting thread is formed on the opening of the radial inner wall of the protective cover, and the first connecting thread is threadedly connected with the second connecting thread; a first positioning tooth is further arranged on the axial end face of the cup body, a second positioning tooth is formed on the outer wall of the host shell, and the first positioning tooth is positioned and matched with the second positioning tooth to limit the rotation of the cup body relative to the host shell; and / or,

[0017] A ventilation hole is formed on the wall surface of the protective cover, and the ventilation hole is used for communicating the inner and outer spaces of the protective cover.

[0018] In one embodiment, the host further comprises a battery, the host shell comprises a shell body, a battery cover and a mounting seat, the shell body is provided with a receiving groove, a receiving opening communicated with the receiving groove and arranged in the axial direction of the shell body, a battery groove and a battery opening communicated with the battery groove and arranged in the radial outer wall of the shell body, the driving module is arranged in the receiving groove through the receiving opening, the mounting seat is axially assembled at the receiving opening, and the battery cover covers the battery opening.

[0019] In one embodiment, the oil injector further comprises an adapter, the adapter is provided with an oil outlet channel communicated with the oil outlet, and the adapter is detachably connected to the oil cup and used for external installation.

[0020] In one embodiment, the host further comprises a photoelectric sensor and a main control board, the driving module is in driving connection with the screw rod and used for driving the screw rod to rotate, the rotation of the screw rod can drive the oil pressing disc to move along the extension direction of the oil cavity, and the photoelectric sensor is used for sensing the angular displacement of the screw rod.

[0021] The photoelectric sensor is electrically connected with the main control board and used for transmitting the electric signal of the oil outlet amount to the main control board, the main control board is further provided with a communication module, the communication module is used for external communication, the main control board is electrically connected with the driving module and used for controlling the driving module to work and output the rotary motion according to the electric signal of the oil outlet amount or the instruction signal of the external communication.

[0022] The utility model discloses a host and oil cup detachable connection, thereby facilitating the replacement of the oil cup after the oil cup is exhausted by oil, and guaranteeing the continuous and stable work of the oil injector.

[0023] The utility model discloses an oil injector, and the driving module drives the screw rod to rotate, and the rotation of the screw rod can drive the oil pressing disc to move along the extension direction of the oil cavity, thereby automatically extruding the oil from the oil outlet by the driving module to complete the oil injection.

[0024] Further, the rotary motion output by the driving module is not more than 100 revolutions per minute, the screw rod is driven to rotate at a smaller speed, thereby controlling the oil injection amount, the host and the oil cup are detachable connection, thereby facilitating the replacement of the oil cup after the oil cup is exhausted by oil, and guaranteeing the continuous and stable work of the oil injector. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the drawings needed in the description of the embodiments or the prior art will be briefly introduced as follows. Obviously, the drawings in the following description are only some embodiments of the present application, and for those skilled in the art, other drawings can also be obtained from these drawings without creative labor.

[0026] Among them:

[0027] Figure 1 It is a schematic diagram of the oil injector in an embodiment.

[0028] Figure 2 It is Figure 1 the explosion diagram of the oil injector.

[0029] Figure 3 It is Figure 1 the front view of the oil injector.

[0030] Figure 4 It is Figure 3 the A-A sectional view in the figure.

[0031] Figure 5 It is Figure 4 the B part enlarged view.

[0032] Figure 6 It is Figure 1 the explosion diagram of the oil cup and the adapter in the oil injector.

[0033] Figure 7 It is Figure 1 the explosion diagram of the main machine in the oil injector.

[0034] Figure 8 It is Figure 7 the C part enlarged schematic diagram.

[0035] Figure 9 It is Figure 1 the partial schematic diagram of the main machine.

[0036] Figure 10 It is Figure 1 the first state sectional view of the oil cup.

[0037] Figure 11 It is Figure 10 the D part enlarged schematic diagram.

[0038] Figure 12 It is Figure 1 the second state sectional view of the oil cup.

[0039] Figure 13 It is Figure 12 the E part enlarged schematic diagram.

[0040] 100, host; 110, drive module; 120, shaft coupling; 121, first connecting part; 122, code disc; 1221, code tooth; 130, host shell; 131, shell body; 1311, battery slot; 132, battery cover; 133, mounting seat; 1331, second positioning tooth; 140, protective cover; 141, second connecting thread; 142, air hole; 150, battery; 160, photoelectric sensor; 170, main control board; 200, oil cup; 210, cup body; 211, oil cavity; 212, mounting port; 213, oil outlet; 214, first connecting thread; 215, first positioning tooth; 220, oil pressing disc; 221, sealing groove; 230, screw rod; 231, rod body; 2311, smooth rod segment; 2312, threaded rod segment; 232, head; 240, sealing ring; 300, adapter; 310, oil outlet channel. DETAILED DESCRIPTION

[0041] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the present application.

[0042] It should be noted that all directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain posture (as shown in the drawings), and if the certain posture changes, the directional indications also change accordingly.

[0043] In addition, the description of "first", "second" and the like in the present application is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In addition, the technical solutions of each embodiment can be combined with each other, but it must be based on the realization of those skilled in the art, and when the combination of technical solutions appears contradictory or unachievable, it should be considered that the combination of technical solutions does not exist, nor is it within the scope of protection required by the present application.

[0044] The embodiment of the present application discloses an oil injector, which is used for automatically injecting grease into mechanical equipment, so as to ensure that the mechanical equipment is properly and standardly lubricated. Please refer to Figures 1 to 13The oil injector in an embodiment comprises a main machine 100 and an oil cup 200 detachably connected with the main machine 100; the oil cup 200 comprises a cup body 210, an oil pressing disc 220 and a screw rod 230; the cup body 210 is internally provided with an oil cavity 211, and an installation opening 212 and an oil outlet 213 in communication with the oil cavity 211; the oil cavity 211 is used to fill oil; the oil pressing disc 220 is slidingly arranged in the oil cavity 211; and the screw rod 230 is arranged at the center of the oil pressing disc 220 and is threadedly connected with the oil pressing disc 220.

[0045] In the embodiment, the main machine 100 comprises a driving module 110, which is drivingly connected with the screw rod 230 and is used to drive the screw rod 230 to rotate; the rotation of the screw rod 230 can drive the oil pressing disc 220 to move along the extension direction of the oil cavity 211, so that the oil is automatically squeezed out from the oil outlet 213 by the driving module 110 to complete the oil injection; since the oil injection amount is high in precision and the automatic oil injection is stable, the problem of insufficient or excessive lubrication caused by manual oil injection is solved.

[0046] It can be understood that the rotational motion output by the driving module 110 is not greater than 100 revolutions per minute; the screw rod 230 is driven to rotate at a relatively small speed, so as to control the oil injection amount; the main machine 100 is detachably connected with the oil cup 200, so that the oil cup 200 can be replaced after the oil cup 200 is exhausted, thereby ensuring the continuous and stable operation of the oil injector.

[0047] In an embodiment, the driving module 110 comprises a driving motor and a speed reducer; the driving motor and the speed reducer are integrated as an integrated module; by being thus arranged, the integrated assembly and maintenance of the driving module 110 are facilitated.

[0048] In the embodiment, the driving motor can have a speed greater than 10,000 revolutions per minute; the speed reducer is used to reduce the speed of the rotational motion, so that the driving module 110 outputs a speed not greater than 100 revolutions per minute, thereby achieving a better injection standard of the oil into the mechanical equipment; of course, according to the different oil injection requirements of the mechanical equipment, the output speed of the driving module 110 can be changed by adjusting the speed reduction ratio of the speed reducer; for example, the output speed of the driving module 110 can be specifically 5 revolutions per minute, 10 revolutions per minute, 20 revolutions per minute, 35 revolutions per minute, 50 revolutions per minute or 100 revolutions per minute, etc.; specifically, the speed reducer can be a gear box; of course, in other embodiments, the working speed of the driving motor can also be adjusted synchronously; for example, a driving motor with a speed of 8,000 revolutions per minute is used.

[0049] In another embodiment, the driving module 110 is a direct drive motor; the difference from the previous embodiment is that, in the embodiment, the driving module 110 does not need to be provided with a speed reducer; a direct drive motor with a low speed is directly used to make the driving module 110 output a low speed.

[0050] In an embodiment, referring to Figure 4 and Figure 6 , the oil cup 200 comprises a sealing ring 240, the circumferential outer wall of the pressing disc 220 is provided with a sealing groove 221, the sealing ring 240 is arranged in the sealing groove 221 and elastically abuts between the groove wall of the sealing groove 221 and the wall of the oil cavity 211 of the cup body 210. Through such arrangement, the circumferential rotation friction of the sealing ring 240 is large and the axial movement friction is small, the rotation of the screw rod 230 can drive the pressing disc 220 to move along the extension direction of the oil cavity 211, so as to automatically squeeze out the oil from the oil outlet 213 to complete the oil injection by the driving module 110

[0051] In an embodiment, referring to Figures 4 to 6 , the oil injector further comprises a shaft coupling 120, one end of the shaft coupling 120 is connected with the output shaft of the driving module 110 and the other end is formed with a first connecting part 121; the screw rod 230 comprises a rod body 231 penetrating through the pressing disc 220 and a head 232 located at the end of the rod body 231, the head 232 is formed with a second connecting part, the first connecting part 121 and the second connecting part are detachably connected and used for transmitting the rotary motion output by the driving module 110 to the second connecting part, so that the linear motion of the pressing disc 220 can be driven after the rotation of the screw rod 230 to squeeze out the oil in the oil cavity 211 from the oil outlet 213.

[0052] It can be understood that the cup body 210, the pressing disc 220 and the screw rod 230 are integrated and assembled as a whole to form the oil cup 200, and the rotary motion can be obtained from the main machine 100 through the screw rod 230 on the oil cup 200 for the oil outlet work of the oil cup 200.

[0053] Specifically, the first connecting part 121 is a hexagonal joint formed on the head 232, and the second connecting part is a hexagonal groove formed on the shaft coupling 120, through such cooperation, the screw rod 230 can select a standard part, i.e. a six-headed screw rod 230, so that the manufacturing cost of the oil cup 200 is low, the replacement cost of the oil cup 200 is enhanced, and the market competition ability is improved.

[0054] In an embodiment, referring to Figures 10 to 13 , the screw rod 230 comprises a rod body 231 penetrating through the pressing disc 220 and a head 232 located at the end of the rod body 231, and the driving module 110 is in transmission connection with the head 232; the end of the rod body 231 away from the head 232 is formed with a smooth rod section 2311, and a threaded rod section 2312 is formed between the smooth rod section 2311 and the head 232, the screw rod 230 is in threaded connection with the pressing disc 220 in the threaded rod section 2312, and the smooth rod section 2311 is used for releasing the threaded cooperation between the screw rod 230 and the pressing disc 220 when the pressing disc 220 moves to the limit position.

[0055] By so arranging, when the pressing disc 220 moves to the limit position, the threaded engagement between the screw rod 230 and the pressing disc 220 is released, so that the driving module 110 cannot continue to drive the pressing disc 220 to move linearly, thereby protecting the driving module 110 and prolonging the service life of the driving module 110.

[0056] In an embodiment, referring to Figures 3 to 5 , the host 100 further comprises a host shell 130 and a protective cover 140, the driving module 110 is installed in the host shell 130, and the protective cover 140 is sleeved on the host shell 130 and is used for detachably connecting with the cup body 210, so as to integrate and assemble the oil cup 200, the host shell 130 and the protective cover 140 as a whole. By so arranging, the oil cup 200 is convenient to disassemble and replace.

[0057] Further, the radial outer wall of the cup body 210 is provided with a first connecting thread 214 at the opening, the radial inner wall of the protective cover 140 is provided with a second connecting thread 141 at the opening, and the first connecting thread 214 is threadedly connected with the second connecting thread 141. By threadedly connecting, the oil cup 200 is convenient to disassemble and replace. Of course, in other embodiments, other buckle structures or screw connections can also be used to realize the disassembly and replacement of the oil cup 200.

[0058] In an embodiment, referring to Figure 7 and Figure 8 , Figure 10 and Figure 12 , the axial end face of the cup body 210 is further provided with a first positioning tooth 215, and the outer wall of the host shell 130 is provided with a second positioning tooth 1331, the first positioning tooth 215 is positioned and matched with the second positioning tooth 1331 to limit the rotation of the cup body 210 relative to the host shell 130, thereby ensuring that the rotary motion output by the driving module 110 can be stably transmitted to the screw rod 230 and the pressing disc 220, so that the work of the oil injector is stable and reliable.

[0059] In an embodiment, referring to Figure 1 , the wall surface of the protective cover 140 is provided with a ventilation hole 142 for communicating the inner and outer spaces of the protective cover 140. By so arranging, the linear motion of the pressing disc 220 in the oil cavity 211 is more stable and reliable, and the large pressure change on the side of the pressing disc 220 close to the host 100 caused by the linear motion of the pressing disc 220 is avoided, thereby affecting the smooth movement of the pressing disc 220.

[0060] In an embodiment, referring to Figure 7The host 100 further comprises a battery 150, the host shell 130 comprises a shell body 131, a battery cover 132 and a mounting seat 133, the shell body 131 is provided with a containing groove, a containing opening axially provided on the shell body 131 and communicated with the containing groove, a battery groove 1311 and a battery 150 opening radially provided on the outer wall of the shell body 131 and communicated with the battery groove 1311, the driving module 110 is installed in the containing groove through the containing opening, the mounting seat 133 is axially assembled at the containing opening, and the battery cover 132 is covered on the battery 150 opening.

[0061] By such an arrangement, the battery 150 can be replaced after the battery power is consumed. Specifically, the battery 150 can be a battery combination composed of a plurality of battery blocks, thereby improving the endurance of the oiler.

[0062] In an embodiment, referring to Figure 4 and Figure 6 , the oiler further comprises an adapter 300, the adapter 300 is provided with an oil outlet channel 310 communicated with the oil outlet 213, the adapter 300 is detachably connected to the oil cup 200 and is used for external installation. By providing the adapter 300, the corresponding adapter 300 can be matched and installed according to different installation scenes of the mechanical equipment, thereby increasing the application adaptability of the oiler.

[0063] Further, the adapter 300 is an adapter flange, the cup body 210 is a structural member made of plastic material, the adapter flange is a structural member made of metal, the adapter 300 is threadedly connected to the adapter flange and is used for supporting the oil cup 200. It can be understood that the plastic cup body 210 has poor reliability and low structural strength and is easy to be damaged. By increasing the supporting effect of the adapter flange, the oiler can be better supported, and the working stability and reliability thereof are increased.

[0064] In an embodiment, referring to Figure 5 , Figure 7 and Figure 9 , the host 100 further comprises a photoelectric sensor 160 and a master control board 170, the driving module 110 is drivingly connected to the screw 230 and is used for driving the screw 230 to rotate, the rotation of the screw 230 can drive the oil pressing disc 220 to move along the extension direction of the oil cavity 211, the photoelectric sensor 160 is used for sensing the angular displacement of the screw 230, and the driving module 110 can control the rotary motion thereof according to the angular displacement, so that the driving module 110 can control the rotary motion thereof according to the angular displacement of the screw 230, thereby adjusting the oiling amount.

[0065] In the embodiment, the photoelectric sensor 160 is electrically connected with the main control board 170, and is used to convert the angular displacement into an electrical signal of the oil output and transmit to the main control board 170, and the main control board 170 is further provided with a communication module, the communication module is used for external communication, and the main control board 170 is electrically connected with the driving module 110, and is used to control the driving module 110 to work and output the rotary motion according to the electrical signal of the oil output or the instruction signal of the external communication.

[0066] It can be understood that the oil injection amount of the oil injector can be controlled through the main control board 170, and since the communication module is arranged on the main control board 170, the main control board 170 can also communicate the electrical signal of the oil output to an external network system through the communication module, and control the rotary motion parameters of the driving module 110 according to the instruction of the external network system, so as to realize flexible adjustment of the oil injection amount. Specifically, the communication module can be a Bluetooth module or a wifi module.

[0067] Specifically, the coupling 120 is provided with a code disc 122, and a plurality of code teeth 1221 are circumferentially distributed on the code disc 122, and the photoelectric sensor 160 is used to sense the rotation stroke of the code tooth 1221 and convert the rotation stroke into an electrical signal of the oil output. By such arrangement, the combination of the photoelectric sensor 160 and the code disc 122 can be used to measure the angular displacement of the screw rod 230, and the rotation stroke of the angular displacement can be converted into an electrical signal of the oil output, so as to adjust the oil injection amount.

[0068] In the embodiment, the code teeth 1221 are circumferentially distributed on the code disc 122 at 8 to 16, further, the code teeth 1221 are circumferentially distributed on the code disc 122 at 8, 10, 12, 14 or 16. Of course, in other embodiments, according to the accuracy requirement of the oil injection amount of the oil injector, the code teeth 1221 can also be circumferentially distributed on the code disc 122 at 20 or more other numbers.

[0069] In an embodiment, please refer to 1 and Figure 7 The outer wall of the protective cover 140 is arranged in a prismatic shape, which facilitates the rotation of the protective cover 140 by the operator, thereby achieving the disassembly and replacement of the oil cup 200 or the battery 150.

[0070] The above only discloses the preferred embodiment of the utility model, of course, cannot limit the scope of the utility model, therefore, the equivalent changes made according to the utility model claim still belong to the scope covered by the utility model.

Claims

1. An oiler characterized by comprising: The oil injector comprises a main machine and an oil cup detachably connected with the main machine; The oil cup comprises a cup body, an oil pressing disc and a screw rod, the cup body is provided with an oil cavity, an installation opening and an oil outlet opening communicated with the oil cavity, the oil cavity is filled with oil, the oil pressing disc is slidingly arranged in the oil cavity, and the screw rod is arranged at the center of the oil pressing disc and is threadedly connected with the oil pressing disc; The main machine comprises a driving module, the driving module is in transmission connection with the screw rod and is used for driving the screw rod to rotate, the rotation of the screw rod can drive the oil pressing disc to move along the extension direction of the oil cavity, and the rotation of the driving module is not greater than 100 revolutions per minute.

2. The oiler according to claim 1, characterized by The driving module comprises a driving motor and a speed reducer, and the driving motor and the speed reducer are integrated as an integrated module; Alternatively, the driving module is a direct drive motor.

3. The oiler according to claim 2, wherein The oil injector further comprises a shaft coupling, one end of the shaft coupling is connected with an output shaft of the driving module, and the other end of the shaft coupling is provided with a first connecting portion; The screw rod comprises a rod body penetrating through the oil pressing disc and a head arranged at the end of the rod body, the head is provided with a second connecting portion, the first connecting portion is detachably connected with the second connecting portion, and the first connecting portion is used for transmitting the rotation of the driving module to the second connecting portion.

4. The oiler according to claim 3, wherein The first connecting portion is a hexagonal joint formed on the head, and the second connecting portion is a hexagonal groove formed on the shaft coupling.

5. The oiler according to claim 1, wherein The screw rod comprises a rod body penetrating through the oil pressing disc and a head arranged at the end of the rod body, the driving module is in transmission connection with the head; a smooth rod section is formed at the end of the rod body away from the head, a threaded rod section is formed between the smooth rod section and the head, the screw rod is threadedly connected with the oil pressing disc in the threaded rod section, the smooth rod section is used for releasing the threaded connection between the screw rod and the oil pressing disc when the oil pressing disc moves to a limit position; and / or The oil cup comprises a sealing ring, a sealing groove is formed in the circumferential outer wall of the oil pressing disc, and the sealing ring is arranged in the sealing groove and elastically abuts between the groove wall of the sealing groove and the oil cavity wall of the cup body.

6. The oiler according to claim 1, wherein The main machine further comprises a main machine shell and a protective cover, the driving module is arranged in the main machine shell, the protective cover is sleeved on the main machine shell and is used for being detachably connected with the cup body, so that the oil cup, the main machine shell and the protective cover are integrated as an integrated module.

7. The oiler according to claim 6, wherein A first connecting thread is formed at the opening of the radial outer wall of the cup body, a second connecting thread is formed at the opening of the radial inner wall of the protective cover, the first connecting thread is threadedly connected with the second connecting thread, an axial end surface of the cup body is further provided with a first positioning tooth, a second positioning tooth is formed on the outer wall of the main machine shell, the first positioning tooth is in positioning cooperation with the second positioning tooth, so as to limit the rotation of the cup body relative to the main machine shell; and / or Ventilation holes are formed in the wall surface of the protective cover, and the ventilation holes are used for communicating the inner and outer spaces of the protective cover.

8. The oiler according to claim 6, wherein The host further comprises a battery, the host shell comprises a shell body, a battery cover and a mounting seat, the shell body is internally provided with a receiving groove, a receiving opening axially communicated with the receiving groove and provided in the shell body, a battery groove and a battery opening radially communicated with the battery groove and provided in the outer wall of the shell body, the driving module is mounted into the receiving groove through the receiving opening, the mounting seat is axially assembled at the receiving opening, and the battery cover covers the battery opening.

9. The oiler according to claim 1, wherein The oil injector further comprises an adapter, the adapter is internally provided with an oil outlet channel communicated with the oil outlet, and the adapter is detachably mounted on the oil cup and used for external installation.

10. The oiler according to claim 1, wherein The host further comprises a photoelectric sensor and a main control board, the driving module is in driving connection with the screw rod and used for driving the screw rod to rotate, the rotation of the screw rod can drive the oil pressing disc to move along the extension direction of the oil cavity, and the photoelectric sensor is used for sensing the angular displacement of the screw rod. The photoelectric sensor is electrically connected with the main control board and used for converting the angular displacement into an electric signal of the oil outlet amount and transmitting the electric signal to the main control board, the main control board is further provided with a communication module, the communication module is used for external communication, the main control board is electrically connected with the driving module and used for controlling the driving module to work and output the rotary motion according to the electric signal of the oil outlet amount or an instruction signal of the external communication.

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