Pneumatic oil injector

Abstract

The utility model discloses a pneumatic oil injector which comprises a valve body assembly which comprises a valve body provided with a cavity used for containing grease, a sealing block arranged at one end of the valve body and an oil discharging opening formed in the valve body and used for discharging the grease in the cavity. The bottom end of the valve body is further provided with a component used for detecting oil pressure in the cavity. The oil discharge port is further provided with a one-way valve with a speed regulating valve element. The air cylinder assembly comprises a cylinder body connected with the sealing block in a sealed and matched mode, a piston rod arranged in the cylinder body, and a cylinder cover used for being connected with the end, away from the sealing block, of the cylinder body in a sealed and matched mode, wherein one end of the piston rod penetrates through the sealing block and then stretches into the cavity. According to the pneumatic oil injector, high-pressure and low-pressure filling can be carried out according to the change of filling pressure in the filling process, so that oil filling is more accurate.

Description

Technical Field

[0001] The utility model relates to the technical field of oiling machines, in particular to a pneumatic oiling device. Background Art

[0002] Pneumatic oiler, also known as pneumatic grease machine or pneumatic grease filling machine, is a machine that increases the pressure of grease into lubrication stations. It is widely used in machine tools, equipment, automobiles, ships and other industries.

[0003] For the pneumatic lubricators commonly used in the current prior art, actual research and use have found that there are roughly the following problems:

[0004] First, most pneumatic lubricators use a timer to set the air intake time, thereby realizing the control of the oil filling switch. Under the conditions of the same air pressure and filling time, the amount of grease filled is certain. However, the conditions at the site of use are complex and the air pressure is often unstable. This leads to inaccurate grease filling, such as a starter lubricator disclosed in publication number CN111853511A.

[0005] Second, most oil injectors can only meet the conditions of short-distance and low-pressure use, and are often helpless in filling viscous grease, and the grease level in the cavity cannot be judged. For example, a timed and quantitative pneumatic electronic automatic lubricating oil filling device disclosed in publication number CN109668040A.

[0006] Third, the pneumatic oiler is relatively large in size and is extremely inconvenient to install and maintain on site, such as the pneumatic oiler disclosed in publication number CN 204328429U.

[0007] In summary, with regard to the above-mentioned problems existing in the pneumatic lubricators used in the prior art, it can be seen that from the perspective of optimizing the comprehensive performance of the pneumatic lubricators, the structure of the pneumatic lubricators needs to be further optimized. Utility Model Content

[0008] The utility model aims to provide a pneumatic oil injector to solve the technical problem of optimizing the comprehensive use performance of the pneumatic oil injector.

[0009] The pneumatic oil injector of the utility model is realized as follows:

[0010] A pneumatic oiler, comprising:

[0011] A valve body assembly, comprising a valve body having a cavity for containing grease, a sealing block arranged at one end of the valve body, and an oil discharge port formed on the valve body for discharging the grease in the cavity; a component for detecting the oil pressure in the cavity is also arranged at the bottom end of the valve body; and a one-way valve having a speed regulating valve core is also arranged at the oil discharge port;

[0012] The cylinder assembly comprises a cylinder body sealed with a sealing block, a piston rod arranged in the cylinder body and adapted to extend into the cavity after passing through the sealing block at one end, and a cylinder cover sealed with one end of the cylinder body away from the sealing block.

[0013] In an optional implementation of the utility model, the piston rod includes a first outer diameter portion for sealing with the inner cavity wall of the cylinder body and a second outer diameter portion connected to the first outer diameter portion and suitable for passing through the sealing block; wherein

[0014] The outer diameter of the first outer diameter portion is greater than the outer diameter of the second outer diameter portion.

[0015] In an optional implementation of the present invention, the outer side wall of the first outer diameter portion is provided with a first sealing ring for sealingly cooperating with the inner cavity wall of the cylinder body.

[0016] In an optional implementation of the present invention, a magnetic ring is embedded in the outer wall of the first outer diameter portion.

[0017] In an optional implementation of the utility model, a through hole suitable for the second outer diameter portion to pass through is formed on the sealing block; the inner diameter of the through hole is the same as the inner diameter of the cavity; and

[0018] The outer side wall of the second outer diameter portion is provided with a second sealing ring for sealingly cooperating with the inner hole wall of the through hole.

[0019] In an optional implementation of the present invention, the valve body is further configured with an oiling nozzle for injecting grease into the cavity.

[0020] In an optional implementation of the present invention, an exhaust valve is also configured on the valve body.

[0021] In an optional implementation of the present invention, the cylinder body is also configured with an electromagnetic throttle valve.

[0022] In an optional implementation of the present invention, the component is a pressure sensor.

[0023] In an optional implementation of the present invention, a magnetic switch is also mounted on the side wall of the cylinder.

[0024] By adopting the above technical scheme, the utility model has the following beneficial effects: the pneumatic oiler of the utility model, through the components for detecting the oil pressure in the cavity configured at the bottom end of the valve body, makes it possible to adjust the filling time by flow rate control according to the changes in the pressure inside the cavity storing the grease during the grease filling process by using the pneumatic oiler, and through the one-way valve with a speed regulating valve core configured at the oil discharge port of the valve body, thereby achieving compensation for the grease filling and making the grease filling more accurate.

[0025] In addition, an exhaust valve is provided on the valve body, making filling more convenient without disassembly. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a cross-sectional structural schematic diagram of the pneumatic oil injector of the utility model;

[0027] Figure 2 It is a schematic diagram of the overall structure of the pneumatic oiler of the utility model.

[0028] In the figure: cylinder head 1, cylinder body 2, magnetic ring 3, grease 4, pressure sensor 5, first sealing ring 6, second sealing ring 8, piston rod 7, first outer diameter portion 71, second outer diameter portion 72, sealing block 9, valve body 10, speed regulating valve core 12, one-way valve 11, oil filling pipe 13, oil pipe joint 14, electromagnetic throttle valve 15, air pipe joint 17, oil filling nozzle 18, magnetic switch 19, exhaust valve 20. DETAILED DESCRIPTION

[0029] In order to make the content of the utility model more clearly understood, the utility model is further described in detail below based on specific embodiments and in conjunction with the accompanying drawings.

[0030] See also Figure 1 and Figure 2 As shown, this embodiment provides a pneumatic oil injector, including: a valve body assembly and a cylinder assembly used in conjunction with each other.

[0031] Specifically, first, the valve body assembly includes a valve body 10 having a cavity for accommodating grease 4, a sealing block 9 provided at one end of the valve body 10, and an oil discharge port formed on the valve body 10 for discharging the grease 4 in the cavity; the bottom end of the valve body 10 is also provided with components for detecting the oil pressure in the cavity; the oil discharge port is also provided with a one-way valve 11 having a speed regulating valve core 12. The components here can be selected, for example, but not limited to, a pressure sensor 5. The outlet of the one-way valve 11 is also connected to an oil filling pipe 13, and the oil filling pipe 13 is provided with an oil pipe joint 14, so that the grease 4 can flow into the mechanism that needs lubrication through the oil filling pipe 13.

[0032] Based on the above situation, it should be noted that the valve body 10 is also provided with an oiling nozzle 18 for injecting grease 4 into the cavity. The valve body 10 is also provided with an exhaust valve 20, which can be optionally installed at the bottom of the valve body 10. Here, through the designed exhaust valve 20, after the grease 4 in the cavity of the valve body 10 is injected into the mechanism that needs lubrication, the design of the exhaust valve 20 does not require the valve body assembly to be disassembled, and the grease 4 can be directly injected into the cavity of the valve body 10 through the oiling nozzle 18, thereby making the operation of adding grease 4 more convenient.

[0033] Next, the cylinder assembly:

[0034] Specifically, it includes a cylinder body 2 sealed with a sealing block 9, a piston rod 7 disposed in the cylinder body 2 and adapted to extend into the cavity after one end passes through the sealing block 9, and a cylinder cover 1 sealed with one end of the cylinder body 2 away from the sealing block 9. The cylinder body 2 is also equipped with an electromagnetic throttle valve 15. A magnetic switch 19 is also mounted on the side wall of the cylinder body 2. It is understandable that the cylinder body 2 is also equipped with a gas pipe joint 17.

[0035] On the basis of the above structure, in more detail, the piston rod 7 includes a first outer diameter portion 71 for sealing with the inner cavity wall of the cylinder body 2 and a second outer diameter portion 72 connected to the first outer diameter portion 71 and suitable for passing through the sealing block 9; wherein the outer diameter of the first outer diameter portion 71 is greater than the outer diameter of the second outer diameter portion 72.

[0036] In addition, it should be noted that the outer wall of the first outer diameter portion 71 is provided with a first sealing ring 6 for sealingly cooperating with the inner cavity wall of the cylinder body 2. The outer wall of the first outer diameter portion 71 is embedded with a magnetic ring 3.

[0037] Furthermore, a through hole is formed on the sealing block 9 for the second outer diameter portion 72 to pass through; the inner diameter of the through hole is the same as the inner diameter of the cavity; and the outer wall of the second outer diameter portion 72 is provided with a second sealing ring 8 for sealingly cooperating with the inner hole wall of the through hole. Here, the upper and lower positions of the grease 4 in the cavity are sealed by squeezing the second sealing ring 8.

[0038] In summary, regarding the pneumatic oiler of this embodiment, its specific implementation principle is as follows:

[0039] Fill the cavity of the valve body 10 with grease 4 from the grease nozzle 18, and press the exhaust valve 20 during filling. Vent the cylinder 2 through the electromagnetic throttle valve 15, and push the piston rod 7 in the cylinder 2 toward the side of the valve body 10. The movement of the piston rod 7 changes the volume of the cavity of the valve body 10, so that the pressure inside the cavity increases. When the pressure increases, the grease 4 in the cavity will squeeze the one-way valve 11. In this process, the components for detecting the oil pressure in the cavity are configured at the bottom of the valve body 10, so that the pneumatic oiler can adjust the filling speed according to the change of the pressure inside the cavity storing the grease 4 through the speed regulating valve core 12 of the one-way valve 11 and flow into the mechanism that needs lubrication through the filling pipe 13. The filling time can be adjusted by flow rate control to achieve compensation for the filling of grease 4, so that the filling of grease 4 is more accurate.

[0040] For the above specific embodiments of the present embodiment, the purpose, technical solutions and beneficial effects of the present utility model are further described in detail. It should be understood that the above are only specific embodiments of the present utility model and are not used to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present utility model should be included in the protection scope of the present utility model.

[0041] In the description of the present invention, it is necessary to understand that the terms indicating orientation or positional relationship are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0042] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0043] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the accompanying drawings, or the orientation or position relationship in which the utility model product is usually placed when in use, which is only for the convenience of describing the utility model and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0044] In addition, the terms "horizontal", "vertical", "overhanging" and the like do not mean that the components are required to be absolutely horizontal or overhanging, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0045] In the present utility model, unless otherwise clearly specified and limited, the first feature being above or below the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through another feature between them. Moreover, the first feature being above, above, and above the second feature includes the first feature being directly above and obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. The first feature being below, below, and below the second feature includes the first feature being directly below and obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

Claims

1. A pneumatic oiler, characterized in that: include: A valve body assembly, comprising a valve body having a cavity for containing grease, a sealing block arranged at one end of the valve body, and an oil discharge port formed on the valve body for discharging the grease in the cavity; a component for detecting the oil pressure in the cavity is also arranged at the bottom end of the valve body; and a one-way valve having a speed regulating valve core is also arranged at the oil discharge port; The cylinder assembly comprises a cylinder body sealed with a sealing block, a piston rod arranged in the cylinder body and adapted to extend into the cavity after one end passes through the sealing block, and a cylinder cover sealed with one end of the cylinder body away from the sealing block.

2. The pneumatic oiler according to claim 1, characterized in that: The piston rod comprises a first outer diameter portion for sealingly cooperating with the inner cavity wall of the cylinder body and a second outer diameter portion connected to the first outer diameter portion and suitable for penetrating the sealing block; The outer diameter of the first outer diameter portion is greater than the outer diameter of the second outer diameter portion.

3. The pneumatic oiler according to claim 2, characterized in that: The outer side wall of the first outer diameter portion is provided with a first sealing ring for sealingly cooperating with the inner cavity wall of the cylinder body.

4. The pneumatic oil injector according to claim 2 or 3, characterized in that: A magnetic ring is embedded in the outer wall of the first outer diameter portion.

5. The pneumatic oil injector according to claim 2 or 3, characterized in that: The sealing block is formed with a through hole suitable for the second outer diameter portion to pass through; the inner diameter of the through hole is the same as the inner diameter of the cavity; and The outer side wall of the second outer diameter portion is provided with a second sealing ring for sealingly cooperating with the inner hole wall of the through hole.

6. The pneumatic oiler according to claim 1, characterized in that: The valve body is also provided with an oiling nozzle for injecting grease into the cavity.

7. The pneumatic oil injector according to claim 1 or 6, characterized in that: The valve body is also provided with an exhaust valve.

8. The pneumatic oil injector according to claim 1 or 6, characterized in that: The cylinder body is also equipped with an electromagnetic throttle valve.

9. The pneumatic oiler according to claim 1, characterized in that: The component adopts a pressure sensor.

10. The pneumatic oiler according to claim 1, characterized in that: A magnetic switch is also mounted on the side wall of the cylinder body.

Images