Pumping rod group and automatic oiling machine

Abstract

The utility model discloses an oil pumping rod group and an automatic oiling machine, and the oil pumping rod group comprises a grease bag which is provided with an oil outlet pipe; the oil pumping pipe is arranged in the oil outlet pipe in a penetrating mode and connected with the oil outlet pipe in a sealed mode. The oil pumping pipe is provided with a first one-way valve; the oil pumping screw rod is movably arranged in the oil pumping pipe in a penetrating manner and is hermetically connected with the oil pumping pipe; the oil pumping screw rod is provided with a second one-way valve; an oil pumping cavity is formed between the first one-way valve and the second one-way valve, the oil pumping screw slides relative to the oil pumping pipe to drive the volume of the oil pumping cavity to change, and then oil in the oil bag is pumped out. According to the oil pumping rod set and the automatic oil injection machine, the oil in the oil bag is pumped out through the change of the oil pumping cavity, the effect similar to a piston can be achieved, the output oil can be repeatedly pressurized through the multiple changes of the volume of the oil pumping cavity, the oil injection outlet pressure of the automatic oil injection machine is increased, and the oil injection efficiency is improved. And the device is suitable for long-distance oil injection scenes.

Description

Technical Field

[0001] The utility model relates to the technical field of oil injection machines, in particular to an oil pump rod assembly and an automatic oil injection machine. Background Art

[0002] As equipment production gradually moves towards intelligence, automation and unmanned operations, corresponding automatic oiling machines are needed to lubricate mechanical equipment that needs to run for a long time or is difficult for humans to access. However, the oil outlet pressure of most current oiling machines is relatively low, making it difficult to apply to scenarios that require long-distance oiling. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes an oil pump rod assembly, which can effectively increase the oil injection outlet pressure and is suitable for long-distance oil injection scenarios.

[0004] The utility model also provides an automatic oil filling machine with the oil pump rod assembly.

[0005] The oil pump rod assembly according to the first embodiment of the utility model comprises:

[0006] Grease bag, equipped with oil outlet pipe;

[0007] An oil pump pipe is passed through the oil outlet pipe and is sealed and connected to the oil outlet pipe; the oil pump pipe is provided with a first one-way valve;

[0008] An oil pumping screw is movably arranged in the oil pumping pipe and is sealed and connected to the oil pumping pipe; the oil pumping screw is provided with a second one-way valve;

[0009] An oil pumping cavity is formed between the first one-way valve and the second one-way valve. The sliding of the oil pumping screw relative to the oil pumping pipe will drive the volume of the oil pumping cavity to change, thereby pumping out the grease in the grease bag.

[0010] The oil pump rod assembly according to the embodiment of the utility model has at least the following beneficial effects:

[0011] The grease in the grease bag can be pumped out by changing the pump oil chamber, which can play a role similar to a piston, so that the output grease can be repeatedly pressurized by multiple changes in the volume of the pump oil chamber, thereby increasing the oil injection outlet pressure of the oil injection machine, making it suitable for long-distance oil injection scenarios; the oil pump pipe is provided with a first one-way valve and the oil pump screw is provided with a second one-way valve, which can ensure the one-way flow of grease and avoid ineffective workmanship of the oil pump rod group.

[0012] According to some embodiments of the utility model, the oil pump pipe is provided with a first through hole axially penetrating the oil pump pipe, and the first one-way valve is arranged in the first through hole.

[0013] According to some embodiments of the utility model, the oil pumping screw is provided with a second through hole axially penetrating the oil pumping screw, and the second one-way valve is arranged in the second through hole.

[0014] According to some embodiments of the present utility model, the first one-way valve includes a first valve body, the first valve body is provided with a first guide hole; the second one-way valve includes a second valve body, the second valve body is provided with a second guide hole;

[0015] When the volume of the pump oil chamber increases, the grease in the oil outlet pipe enters the first guide hole; when the volume of the pump oil chamber decreases, the grease in the first guide hole enters the pump oil chamber, and the grease in the pump oil chamber enters the second guide hole.

[0016] According to some embodiments of the present utility model, the first end of the first guide hole is connected to the oil outlet pipe, and the second end of the first guide hole is connected to the pump oil chamber; a first rolling ball is slidably installed in the first guide hole, and the volume change of the pump oil chamber can drive the first rolling ball to slide along the length direction of the first guide hole to seal the first end or the second end of the first guide hole.

[0017] According to some embodiments of the utility model, the oil pumping screw is provided with a second through hole axially penetrating the oil pumping screw, and the second one-way valve is arranged in the second through hole;

[0018] The first end of the second guide hole is communicated with the pump oil chamber, and the second end of the second guide hole is communicated with the second through hole; a second ball and a clamping spring are slidably installed in the second guide hole, and the clamping spring is used to push the second ball to seal the first end of the second guide hole; when the volume of the pump oil chamber is reduced, the second ball can be driven to move toward the second end and compress the clamping spring.

[0019] According to some embodiments of the utility model, the first one-way valve is arranged at one end of the oil pump pipe close to the oil outlet pipe, and / or the second one-way valve is arranged at one end of the oil pump screw close to the oil outlet pipe.

[0020] According to some embodiments of the utility model, the oil pump rod assembly further includes an intermediate gear, which is drivingly connected to the oil pump screw; the intermediate gear is used to drive the oil pump screw to slide relative to the oil pump pipe.

[0021] The automatic oil filling machine according to the second embodiment of the utility model includes the above-mentioned oil pump rod group.

[0022] According to some embodiments of the utility model, the automatic oil filling machine also includes an assembly structure, which is provided with a center hole, the oil outlet pipe is inserted into the center hole and is threadedly connected to the center hole; the pump oil pipe is passed through the center hole and is sealed and connected to the center hole.

[0023] According to the automatic oil filling machine of the embodiment of the utility model, the oil filling outlet pressure is high and it can be applied to the scenario of long-distance oil filling. At the same time, since the automatic oil filling machine includes the above-mentioned oil pump rod group, the automatic oil filling machine at least includes all the beneficial effects of the oil pump rod group.

[0024] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0026] Figure 1 It is a schematic diagram of the assembly of the oil pump rod assembly of the first embodiment of the utility model;

[0027] Figure 2 A cross-sectional view of an oil pump rod assembly according to an embodiment of the first aspect of the utility model;

[0028] Figure 3 for Figure 2 Enlarged view of point A in the middle.

[0029] Figure Number:

[0030] Grease bag 100, oil outlet pipe 110;

[0031] The oil pump pipe 200, the first one-way valve 210, the first valve body 211, the first guide hole 212, the first rolling ball 213, the first through hole 220, and the oil pump chamber 230;

[0032] The oil pumping screw 300, the second one-way valve 310, the second valve body 311, the second guide hole 312, the second rolling ball 313, the pressing spring 314, the second through hole 320, the intermediate gear 330, and the oil pumping gear 340;

[0033] Assembly structure 400, center hole 410;

[0034] Protective case 500. DETAILED DESCRIPTION

[0035] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0036] In the description of the present invention, it should be understood that the descriptions involving orientation, such as the orientation or positional relationship indicated as up, down, etc., 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.

[0037] In the description of the present utility model, "a plurality" means more than two. If there is a description of "first" or "second", it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0038] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0039] Reference Figures 1 to 3 The oil pump rod assembly of the first embodiment of the utility model includes a grease bag 100, an oil pump pipe 200 and an oil pump screw 300. The oil pump pipe 200 and the oil pump screw 300 cooperate to extract and transport the grease in the grease bag 100. The grease bag 100 is provided with an oil outlet pipe 110, and the oil pump pipe 200 is passed through the oil outlet pipe 110 and is sealed and connected to the oil outlet pipe 110 to reduce the outflow of grease; the oil pump pipe 200 is provided with a first one-way valve 210 to ensure that the grease in the grease bag 100 can only flow from the grease bag 100 to the oil pump pipe 200, and the grease entering the oil pump pipe 200 cannot flow back into the grease bag 100; the oil pump screw 300 is movably passed through the oil pump pipe 200 and is sealed and connected to the oil pump pipe 200, also to prevent the grease from flowing out from the connection between the two; the oil pump screw 300 is provided with a second one-way valve 310, and the second one-way valve 310 is used to ensure that the grease in the oil pump pipe 200 can only flow from the oil pump pipe 200 into the oil pump screw 300 in one direction, and the grease in the oil pump screw 300 cannot flow back into the oil pump pipe 200.

[0040] The specific oil pumping method is as follows: an oil pumping chamber 230 is formed between the first one-way valve 210 and the second one-way valve 310, and the sliding of the oil pumping screw 300 relative to the oil pumping pipe 200 will drive the volume change of the oil pumping chamber 230, thereby pumping out the grease in the grease bag 100. The grease in the grease bag 100 is pumped out by changing the oil pumping chamber 230, which can play a role similar to a piston, so that the output grease can be repeatedly pressurized by multiple changes in the volume of the oil pumping chamber 230, thereby increasing the oil injection outlet pressure of the oil injection machine, making it suitable for long-distance oil injection scenarios.

[0041] In the embodiment of the present utility model, the oil pump pipe 200 is provided with a first through hole 220 axially penetrating the oil pump pipe 200, and the first one-way valve 210 is disposed in the first through hole 220. Figure 2 , Figure 3 As shown, the first through hole 220 is disposed at the center of the oil pump pipe 200. The first one-way valve 210 is disposed in the first through hole 220, which can effectively reduce the diameter of the oil pump pipe 200 and thereby reduce the volume of the automatic oil filling machine.

[0042] Further, the first check valve 210 is disposed at one end of the pump oil pipe 200 close to the oil outlet pipe 110, Figure 2 , Figure 3 As shown, the first one-way valve 210 is arranged at the top of the first through hole 220. Such a design can prevent more grease from entering the pump oil pipe 200, thereby reducing the risk of the grease in the pump oil pipe 200 deteriorating and clogging the pump oil pipe 200 over a long period of time.

[0043] In the embodiment of the present utility model, the oil pumping screw 300 is provided with a second through hole 320 axially penetrating the oil pumping screw 300, and the second one-way valve 310 is disposed in the second through hole 320. Figure 2 , Figure 3 As shown, the second through hole 320 is arranged at the center of the oil pumping screw 300, and the second one-way valve 310 is arranged in the second through hole 320, which can effectively reduce the diameter of the oil pumping screw 300, thereby playing the effect of reducing the volume of the automatic oil injection machine. Similarly, the second one-way valve 310 is arranged at one end of the oil pumping screw 300 close to the oil outlet pipe 110, that is, the second one-way valve 310 is arranged at the top of the second through hole 320. Such a design can prevent more grease from accumulating in the oil pumping chamber 230, and reduce the risk of the grease in the oil pumping chamber 230 deteriorating and clogging the first one-way valve 210 or the second one-way valve 310 under long-term conditions.

[0044] In the embodiment of the utility model, the top of the oil pumping pipe 200 is inserted into the oil outlet pipe 110, and a sealing ring is provided between the outer wall of the oil pumping pipe 200 and the inner wall of the oil outlet pipe 110, ensuring that the grease in the grease bag 100 can only enter the first through hole 220 of the oil pumping pipe 200 through the first one-way valve 210; the top of the oil pumping screw 300 is inserted into the first through hole 220, and a sealing ring is also provided between the outer wall of the oil pumping screw 300 and the inner wall of the first through hole 220, ensuring that the grease entering the first through hole 220 can only enter the second through hole 320 of the oil pumping screw 300 through the second one-way valve 310. The oil pumping chamber 230 is formed at the top of the oil pumping screw 300, and the volume of the oil pumping chamber 230 will change as the oil pumping screw 300 slides relative to the oil pumping pipe 200.

[0045] Specifically, in the embodiment of the present utility model, the first one-way valve 210 includes a first valve body 211, and the first valve body 211 is provided with a first guide hole 212; the second one-way valve 310 includes a second valve body 311, and the second valve body 311 is provided with a second guide hole 312; when the volume of the pump oil chamber 230 increases, the grease in the oil outlet pipe 110 enters the first guide hole 212; when the volume of the pump oil chamber 230 decreases, the grease in the first guide hole 212 enters the pump oil chamber 230, and the grease in the pump oil chamber 230 enters the second guide hole 312.

[0046] Reference Figure 3 As shown, in the embodiment of the present utility model, the first end of the first guide hole 212 is communicated with the oil outlet pipe 110, and the second end of the first guide hole 212 is communicated with the pump oil chamber 230. The aperture of the middle part of the first guide hole 212 is larger than the apertures of the first end and the second end, and the aperture of the first end is substantially the same as the aperture of the second end. A first rolling ball 213 is slidably mounted in the first guide hole 212, and the first rolling ball 213 is slidably mounted in the middle position of the first guide hole 212, and the diameter of the first rolling ball 213 is substantially equal to the aperture of the middle part of the first guide hole 212. The volume change of the pump oil chamber 230 can drive the first rolling ball 213 to slide along the length direction of the first guide hole 212 to seal the first end or the second end of the first guide hole 212. When the volume in the oil pump chamber 230 increases, the air pressure in the oil pump chamber 230 will decrease, thereby driving the first rolling ball 213 to descend and seal the second end of the first guide hole 212. The first end of the first guide hole 212 is communicated with the grease bag 100, so that the grease in the grease bag 100 can enter the first guide hole 212; when the volume in the oil pump chamber 230 decreases, the air pressure in the oil pump chamber 230 will increase, thereby pushing the first rolling ball 213 to ascend and seal the first end of the first guide hole 212. The second end of the first guide hole 212 is communicated with the oil pump chamber 230, so that the grease in the first guide hole 212 can enter the oil pump chamber 230.

[0047] Reference Figure 3As shown, in the embodiment of the present utility model, the first end of the second guide hole 312 is communicated with the pump oil chamber 230, the second end of the second guide hole 312 is communicated with the second through hole 320, the aperture of the middle part of the second guide hole 312 is larger than the aperture of the first end and the second end, and the aperture of the first end is substantially the same as the aperture of the second end; a second rolling ball 313 and a pressing spring 314 are slidably mounted in the second guide hole 312, the second rolling ball 313 is slidably mounted in the middle part of the second guide hole 312, and the diameter of the second rolling ball 313 is substantially equal to the aperture of the middle part of the second guide hole 312; the pressing spring 314 is also mounted in the middle part of the second guide hole 312, the two ends of the pressing spring 314 are respectively pressed against the second rolling ball 313 and the second end of the second guide hole 312, and the pressing spring 314 is used to push the second rolling ball 313 to seal the first end of the second guide hole 312; when the volume of the pump oil chamber 230 is reduced, the second rolling ball 313 can be driven to move toward the second end and compress the pressing spring 314. Specifically, the bottom of the oil pump screw 300 is used to connect to the oil pipeline, which is not shown in the drawings. The oil pipeline is connected to the second through hole 320, so the pressure below the second one-way valve 310 in the second through hole 320 is basically atmospheric pressure. When the volume in the oil pump chamber 230 increases, the air pressure in the oil pump chamber 230 will decrease. At this time, the pressure in the oil pump chamber 230 is less than the atmospheric pressure. Therefore, the second ball 313 will rise under the action of the pressure spring 314 and the atmospheric pressure to seal the first end of the second guide hole 312. At this time, the grease in the oil pump chamber 230 cannot enter the second guide hole 312, but the grease in the second guide hole 312 can enter the second through hole 320; when the volume in the oil pump chamber 230 decreases, the air pressure in the oil pump chamber 230 will be greater than the atmospheric pressure, so that the pressure in the oil pump chamber 230 will push the second ball 313 down a certain distance and compress the pressure spring 314. When the second ball 313 is lowered a certain distance, the grease in the oil pump chamber 230 will enter the second guide hole 312, and the grease in the second guide hole 312 can also enter the second through hole 320.

[0048] As can be seen from the above, the change in the volume of the pump oil chamber 230 causes the change in the pressure value in the pump oil chamber 230, which in turn drives the first one-way valve 210 and the second one-way valve 310 to operate, thereby achieving the pumping out of the grease. When injecting oil over a long distance, the oil pipeline will be relatively long, and the diameter of the oil pipeline will be relatively small, so the inner wall of the oil pipeline will hinder the flow of grease. The longer the length of the oil pipeline, the greater the resistance to pumping the grease out of the oil pipeline. Therefore, the oil injection outlet pressure at the bottom of the oil pump screw 300 also needs to be increased. This embodiment realizes oil pumping by changing the volume of the pump oil chamber 230, which can have an effect similar to piston compression, and thus can significantly increase the oil injection outlet pressure of the oil pump screw 300.

[0049] In the embodiment of the present utility model, the oil pump rod assembly further includes an intermediate gear 330, which is transmission-connected to the oil pump screw 300; the intermediate gear 330 is used to drive the oil pump screw 300 to slide relative to the oil pump pipe 200. Figure 1 , Figure 2 As shown, the intermediate gear 330 is sleeved on the outer periphery of the oil pumping screw 300, and the outer peripheral wall of the oil pumping screw 300 is provided with an oil pumping gear 340 which is transmission-connected with the intermediate gear 330. The solution of designing the intermediate gear 330 to be sleeved on the outer periphery of the oil pumping screw 300 can also reduce the volume of the oil pumping rod group. The intermediate gear 330 is connected to a power device that drives it to rotate around its own axis. The rotation of the intermediate gear 330 around its own axis can drive the oil pumping gear 340 to rotate, thereby realizing the lifting and lowering of the oil pumping screw 300 relative to the intermediate gear 330, that is, realizing the sliding of the oil pumping screw 300 relative to the oil pumping pipe 200, thereby realizing the change of the volume of the oil pumping chamber 230.

[0050] The automatic oil filling machine of the second embodiment of the utility model comprises the above-mentioned oil pump rod group and the assembly structure 400, the assembly structure 400 is provided with a center hole 410, the oil outlet pipe 110 is inserted into the center hole 410 and is threadedly connected with the center hole 410; the oil pump pipe 200 is passed through the center hole 410 and is sealed and connected with the center hole 410. Figure 1 As shown, the grease bag 100 is arranged above the assembly structure 400, and the oil outlet pipe 110 is arranged at the bottom of the grease bag 100; the threaded connection between the oil outlet pipe 110 and the center hole 410 is simple in structure, not easy to fall off, mature in technology, and can effectively reduce the manufacturing cost; by threading the oil outlet pipe 110 and the grease bag 100, and then sealing the oil pump pipe 200 and the oil outlet pipe 110, it can also better prevent the grease bag 100 and the oil pump pipe 200 from sliding relative to each other, causing the grease in the grease bag 100 to flow out.

[0051] In an embodiment of the utility model, the automatic oil filling machine further comprises a protective shell 500 , which is connected to the general assembly structure 400 . The protective shell 500 is partially disposed around the outer periphery of the intermediate gear 330 to protect the intermediate gear 330 .

[0052] The automatic oil filling machine according to the embodiment of the utility model has the advantages of high oil filling outlet pressure and can be suitable for long-distance oil filling scenarios; at the same time, since the automatic oil filling machine includes the above-mentioned oil pump rod group, the automatic oil filling machine at least includes all the beneficial effects of the oil pump rod group, which will not be repeated here.

[0053] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine different embodiments or examples described in this specification.

[0054] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A pump oil rod assembly, characterized in that: include: Grease bag, equipped with oil outlet pipe; An oil pump pipe is passed through the oil outlet pipe and is sealed and connected to the oil outlet pipe; the oil pump pipe is provided with a first one-way valve; An oil pumping screw is movably arranged in the oil pumping pipe and is sealedly connected to the oil pumping pipe; the oil pumping screw is provided with a second one-way valve; An oil pumping cavity is formed between the first one-way valve and the second one-way valve. The sliding of the oil pumping screw relative to the oil pumping pipe will drive the volume of the oil pumping cavity to change, thereby pumping out the grease in the grease bag.

2. The oil pump rod assembly according to claim 1, characterized in that: The oil pump pipe is provided with a first through hole axially penetrating the oil pump pipe, and the first one-way valve is arranged in the first through hole.

3. The oil pump rod assembly according to claim 1, characterized in that: The oil pumping screw is provided with a second through hole axially penetrating the oil pumping screw, and the second one-way valve is arranged in the second through hole.

4. The oil pump rod assembly according to claim 1, characterized in that: The first one-way valve comprises a first valve body, the first valve body is provided with a first guide hole; the second one-way valve comprises a second valve body, the second valve body is provided with a second guide hole; When the volume of the pump oil chamber increases, the grease in the oil outlet pipe enters the first guide hole; when the volume of the pump oil chamber decreases, the grease in the first guide hole enters the pump oil chamber, and the grease in the pump oil chamber enters the second guide hole.

5. The oil pump rod assembly according to claim 4, characterized in that: The first end of the first guide hole is communicated with the oil outlet pipe, and the second end of the first guide hole is communicated with the pump oil chamber; a first rolling ball is slidably installed in the first guide hole, and the volume change of the pump oil chamber can drive the first rolling ball to slide along the length direction of the first guide hole to seal the first end or the second end of the first guide hole.

6. The oil pump rod assembly according to claim 4, characterized in that: The oil pumping screw is provided with a second through hole axially penetrating the oil pumping screw, and the second one-way valve is arranged in the second through hole; The first end of the second guide hole is communicated with the pump oil chamber, and the second end of the second guide hole is communicated with the second through hole; a second ball and a clamping spring are slidably installed in the second guide hole, and the clamping spring is used to push the second ball to seal the first end of the second guide hole; when the volume of the pump oil chamber is reduced, the second ball can be driven to move toward the second end and compress the clamping spring.

7. The oil pump rod assembly according to claim 1, characterized in that: The first one-way valve is arranged at one end of the oil pump pipe close to the oil outlet pipe, and / or the second one-way valve is arranged at one end of the oil pump screw close to the oil outlet pipe.

8. The oil pump rod assembly according to claim 1, characterized in that: The oil pump rod assembly also includes an intermediate gear, which is drivingly connected to the oil pump screw; the intermediate gear is used to drive the oil pump screw to slide relative to the oil pump pipe.

9. An automatic oil filling machine, characterized in that: It comprises the oil pump rod assembly as claimed in any one of claims 1 to 8.

10. The automatic oil filling machine according to claim 9, characterized in that: The automatic oil injection machine also includes an assembly structure, which is provided with a center hole, the oil outlet pipe is inserted into the center hole and threadedly connected to the center hole; the pump oil pipe is passed through the center hole and sealedly connected to the center hole.

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