Portable oil well pump

Abstract

The utility model discloses a portable oil well pump which comprises a main machine, an oil pumping pipe, an oil outlet pipe and a pump body arranged in the oil pumping pipe, a control cavity and a first wiring hole communicated with the control cavity are formed in the main machine, a circuit board and a battery electrically connected with the circuit board are arranged in the control cavity, and the battery is used for supplying power to the circuit board. The oil pumping pipe is connected with the main machine, the pump body is connected with the circuit board through an electric wire, a sealing piece is arranged between the oil pumping pipe and the main machine, the sealing piece is made of soft rubber, the electric wire penetrates through the sealing piece and the first wiring hole, and the electric wire is in interference fit with the sealing piece and / or the first wiring hole. When the circuit board drives the pump body to work, the pump body drives the pump body to pump oil, and the oil passes through the oil pumping pipe and then is output from the oil outlet pipe. The sealing element is configured in the mode, the control cavity can be effectively isolated from the oil pumping pipe, the problem that the sealing element product falls off from the electric wire during use is avoided, and the air tightness duration of the control cavity can be effectively prolonged.

Description

Technical Field

[0001] This utility model relates to the technical field of oil pumps, and in particular to a portable oil pump. Background Technology

[0002] As is well known, a portable oil pump refers to an electronic product that is easy for users to carry and use, used to transfer oil such as gasoline and diesel from one container to another. A portable oil pump generally includes a main unit, a suction pipe, and an outlet pipe. The main unit contains a circuit board, and the suction pipe contains the pump body, which is electrically connected to the circuit board via wires. The cavity inside the main unit used to mount the circuit board is sealed to the suction pipe, and a wiring hole is provided on the side wall of the cavity for the power supply cable to pass through. Currently, the existing sealing structure between the cavity for mounting the circuit board and the suction pipe generally uses adhesive to seal the wiring hole and the wires. However, with adhesive, the adhesive tends to harden over time, and during the pump's pumping vibration, the adhesive can easily loosen, resulting in a poor seal in the cavity for mounting the circuit board. Utility Model Content

[0003] The main purpose of this utility model is to provide a portable oil pump to solve the problem that the wiring between the cavity for mounting the circuit board and the oil pump tube in existing portable oil pumps is easily loosened due to the use of glue for sealing.

[0004] To solve the above-mentioned technical problems, the technical solution provided by this utility model is as follows:

[0005] A portable oil pump, comprising:

[0006] The host has a control cavity and a first wiring hole communicating with the control cavity. The control cavity contains a circuit board and a battery electrically connected to the circuit board.

[0007] Oil extraction tubing, which is connected to the main unit;

[0008] A pump body is installed inside the oil extraction pipe. The pump body is connected to the circuit board via wires. A seal is provided between the oil extraction pipe and the main unit. The seal is made of soft rubber. The wires pass through the seal and the first wiring hole and are electrically connected to the circuit board. The wires are interference-fitted with the seal and / or the first wiring hole.

[0009] An oil outlet pipe is connected to an oil extraction pipe; when the pump body is driven, it draws oil and outputs the oil from the oil outlet pipe after passing through the oil extraction pipe.

[0010] Furthermore, the sealing element includes a first insert block and a limiting block extending outward from the first insert block;

[0011] The oil extraction tube has a first embedded groove at one end near the circuit board. The oil extraction tube has a second wiring hole that communicates with the inside of the oil extraction tube and the first embedded groove. The limiting block is located between the oil extraction tube and the main unit. The first embedded block is placed in the first embedded groove. The wire passes through the second wiring hole, the first embedded block and the limiting block.

[0012] Furthermore, the seal also includes a second insert block connected to the surface of the first insert block away from the limiting block; the second insert block is placed inside the second wiring hole, through which the wire passes.

[0013] Furthermore, the cross-sections of the second embedding block, the first embedding block, and the limiting block decrease sequentially.

[0014] Furthermore, the seal has a third wiring hole that passes through the second insert block, the first insert block, and the limiting block. The wire passes through the third wiring hole and is interference-fitted with one or more of the second insert block, the first insert block, and the limiting block.

[0015] A dividing protrusion is provided on the inner wall of the oil extraction pipe, the third wiring hole is located on the dividing protrusion, and the second embedding block is provided with a locking block at the end away from the first embedding block. A locking groove is formed between the locking block, the first embedding block, and the second embedding block, and the dividing protrusion is placed in the locking groove.

[0016] Furthermore, the second embedded block is interference-fitted with the sidewall of the second wiring hole;

[0017] The first embedding block abuts against the bottom surface of the first embedding groove on the surface near the second embedding block, and the two opposite surfaces of the limiting block abut against the main unit and the oil extraction pipe, respectively; and / or, the outer wall of the first embedding block is interference-fitted with the side wall of the first embedding groove.

[0018] Furthermore, the main unit also has a transfer cavity, one end of the oil extraction pipe is placed in the transfer cavity, the main unit has a partition between the transfer cavity and the control cavity, the first wiring hole is located on the partition, and the sealing element is at least partially disposed between the partition and the oil extraction pipe; a joint structure is provided between the main unit and the oil extraction pipe, and the joint structure is located at the end of the transfer cavity away from the control cavity.

[0019] The engagement structure includes at least one embedded bump and a second embedded groove that mates with the embedded bump, the embedded bump being placed within the second embedded groove.

[0020] Furthermore, the host includes a first side shell and a second side shell, the first side shell and the second side shell are connected to form a control cavity and a transfer cavity, the embedded protrusion is located on the first side shell and / or the second side shell, and the number of the embedded protrusion and the second embedded groove is multiple.

[0021] Furthermore, the oil extraction pipe protrudes on the side wall near the circuit board to form a connecting pipe, and the main unit has a clearance hole communicating with the transfer cavity. The connecting pipe passes through the clearance hole, and the oil outlet pipe is connected to the connecting pipe.

[0022] Furthermore, one end of the oil outlet pipe is sleeved on the outside of the connecting pipe and pressed tightly by a clamping ring;

[0023] The outer wall of the connecting pipe is provided with a locking groove, and the inner wall of the clamping ring is provided with a clamping protrusion corresponding to the position of the locking groove. The clamping protrusion is interference-fitted with the outer wall of the oil outlet pipe.

[0024] This invention has the following advantages: Compared with the prior art, this invention, by configuring a sealing element between the main unit and the oil extraction pipe, and the sealing element is made of soft rubber, can effectively fix the sealing element by squeezing between the main unit and the oil extraction pipe. The wire passes through the sealing element and the first wiring hole and is press-fitted with the sealing element and / or the first wiring hole, thereby effectively isolating the control chamber from the oil extraction pipe and avoiding the problem of the sealing element falling off the wire during use in this portable oil extraction pump. This can effectively increase the airtightness of the control chamber for a longer period of time and solve the problem that the adhesive used in the existing portable oil extraction pumps to seal the wire and the wiring hole is easy to fall off. Attached Figure Description

[0025] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0026] Figure 1 This is a perspective view of the present utility model;

[0027] Figure 2 This is a cross-sectional view of the present invention taken along the center line of the oil extraction pipe;

[0028] Figure 3 for Figure 2 Enlarged view of region a in the middle;

[0029] Figure 4 for Figure 2 Enlarged view of region b in the middle;

[0030] Figure 5 for Figure 2 Enlarged view of region c in the middle;

[0031] Figure 6This is a partial exploded view of the present invention;

[0032] Figure 7 This is a partial structural diagram of the oil extraction pipe of this utility model;

[0033] Figure 8 This is a partially exploded view of the present invention;

[0034] Figure 9 This is a schematic diagram of the host computer of this utility model;

[0035] Figure 10 This is a cross-sectional view of another embodiment of the present invention after the oil outlet pipe has been removed and the section is cut along the center line of the oil extraction pipe.

[0036] Figure 11 for Figure 10 Enlarged view of region d in the middle;

[0037] Figure 12 This is a structural diagram of another embodiment of the present invention. Detailed Implementation

[0038] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0039] See attached document Figure 1-9 A portable oil pump is described in this embodiment of the present invention.

[0040] The portable oil pump includes a main unit 1, an oil extraction pipe 2, an oil outlet pipe 3, and a pump body 5 disposed within the oil extraction pipe 2. The main unit 1 has a control chamber 10 and a first wiring hole 121 communicating with the control chamber 10. A circuit board 7 and a battery 6 electrically connected to the circuit board 7 are disposed within the control chamber 10, and the battery 6 supplies power to the circuit board 7. The oil extraction pipe 2 is connected to the main unit 1, and the pump body 5 is connected to the circuit board 7 via a wire 50. A sealing element 9, made of soft rubber, is disposed between the oil extraction pipe 2 and the main unit 1. The wire 50 passes through the sealing element 9 and the first wiring hole 121 and is electrically connected to the circuit board 7. The wire 50 has an interference fit with the sealing element 9 and / or the first wiring hole 121. The oil outlet pipe 3 communicates with the oil extraction pipe 2. When the circuit board 7 drives the pump body 5 to operate, the pump body 5 drives the extraction of oil and outputs the oil through the oil extraction pipe 2 and then through the oil outlet pipe 3.

[0041] This invention, by configuring a sealing element 9 between the main unit 1 and the oil extraction pipe 2, and the sealing element 9 being made of soft rubber, effectively fixes the sealing element 9 by squeezing it between the main unit 1 and the oil extraction pipe 2. The wire 50 passes through the sealing element 9 and the first wiring hole 121 and is press-fitted with the sealing element 9 and / or the first wiring hole 121. This effectively isolates the control cavity 10 from the oil extraction pipe 2 and prevents the sealing element 9 from falling off the wire 50 during use in this portable oil pump. This effectively increases the airtightness of the control cavity 10 and solves the problem of easy detachment of the adhesive used in existing portable oil pumps where the adhesive is applied between the wire 50 and the first wiring hole 121.

[0042] In one embodiment, the seal 9 includes a first insert block 92 and a limiting block 91 extending outward from the first insert block 92. The limiting block 91 is located between the oil extraction pipe 2 and the main unit 1 to fix the seal 9 and prevent oil from entering the control cavity 10 from the gap between the oil extraction pipe 2 and the main unit 1.

[0043] The oil extraction tube 2 has a first embedding groove 24 at one end near the circuit board 7. The oil extraction tube 2 also has a second wiring hole 25 that communicates with both the interior of the oil extraction tube 2 and the first embedding groove 24. A first embedding block 92 is placed inside the first embedding groove 24. A wire 50 passes through the second wiring hole 25, the first embedding block 92, and the limiting block 91. By using the first embedding groove 24 to limit the first embedding block 92, the sealing element 9 can be positioned, facilitating the placement of the first limiting block 91 between the oil extraction tube 2 and the main unit 1. This facilitates the installation of the sealing element 9 and increases the contact area between the sealing element 9 and the oil extraction tube 2, further improving the airtightness of the oil flow between the sealing element 9 and the oil extraction tube 2.

[0044] In one embodiment, the seal 9 further includes a second insert block 93 connected to the surface of the first insert block 92 away from the limiting block 91. The wire 50 passes through the second insert block 93, which is positioned within the second wiring hole 25 to further increase the contact surface between the seal 9 and the sucker pipe 2.

[0045] In one embodiment, the cross-sections of the second embedding block 93, the first embedding block 92, and the limiting block 91 decrease sequentially, that is, the second embedding block 93, the first embedding block 92, and the limiting block 91 are in a stepped shape, so as to effectively separate the control cavity 10 from the inside of the oil extraction pipe 2, and effectively ensure the airtightness of the control cavity 10 and the inside of the oil extraction pipe 2, so as to prevent oil from entering the control cavity 10 and causing safety hazards.

[0046] In one embodiment, the sealing element 9 has a third wiring hole 91, which passes through the second embedding block 93, the first embedding block 92 and the limiting block 91. The wire 50 passes through the third wiring hole 91 and is interference-fitted with one or more of the second embedding block 93, the first embedding block 92 and the limiting block 91. This effectively increases the contact area between the wire 50 and the sealing element 9, and effectively improves the airtightness between the control cavity 10 and the inside of the oil extraction pipe 2.

[0047] Specifically, in the above embodiment, the second embedding block 93 is interference-fitted with the sidewall of the second wiring hole 25. The surface of the first embedding block 92 near the second embedding block 93 abuts against the bottom surface of the first embedding groove 24, and the two opposite surfaces of the limiting block 91 abut against the main unit 1 and the oil extraction pipe 2, respectively; and / or, the outer sidewall of the first embedding block 92 is interference-fitted with the sidewall of the first embedding groove 24 to further improve the airtightness of the control cavity 10 and prevent oil from entering the control cavity 10 and causing safety hazards.

[0048] In one embodiment, a partition protrusion 201 is provided on the inner wall of the oil extraction pipe 2, a third wiring hole 94 is located on the partition protrusion 201, and a locking block 95 is provided at the end of the second embedding block 93 away from the first embedding block 92. A groove 96 is formed between the locking block 95, the first embedding block 92, and the second embedding block 93, and the partition protrusion 201 is placed in the groove 96. Figures 10 to 12 As shown, the sealing element 9 and the oil extraction tube 2 are fixedly connected by a snap-fit, so that the sealing element 9 can be fixed when the oil extraction tube 2 is connected to the main unit 1, further preventing the sealing element 9 from falling off. Specifically, the snap-fit ​​block 95 is located below the separating protrusion 93, and the cross-section of the snap-fit ​​block 95 gradually decreases in the direction away from the limiting block 91. The snap-fit ​​block 95 passes through the third wiring hole 94, and the outer side wall of the first embedding block 92 protrudes to form an annular strip 97 to achieve an interference fit with the first embedding groove 24 to achieve a seal. Of course, in other embodiments, the sealing element 9 may not adopt the above structure. The side wall of the sealing element 9 is provided with a slot 96 and the middle is provided with a third wiring hole 94, that is, the cross-section of the sealing element 9 is I-shaped. The inner side wall of the oil extraction tube 2 is provided with a separating protrusion 201 that is adapted to the slot 96. The sealing element 9 passes through the third wiring hole 94, and the separating protrusion 201 is placed in the slot to achieve a fixed connection between the sealing element 9 and the oil extraction tube 2.

[0049] In one embodiment, the main unit 1 also has a transfer cavity 101, one end of the oil extraction pipe 2 is placed in the transfer cavity 101, and the main unit 1 has a partition 12 between the transfer cavity 101 and the control cavity 10. The first wiring hole 121 is located on the partition 12, and the sealing element 9 is at least partially disposed between the partition 12 and the oil extraction pipe 2. A connecting structure 230 is provided between the main unit 1 and the oil extraction pipe 2. The connecting structure 230 is located at the end of the transfer cavity 101 away from the control cavity 10. In this way, the oil extraction pipe 2 and the main unit 1 can be assembled as one unit, and the connecting structure 230 is used to position the relative position between the oil extraction pipe 2 and the main unit 1, so that the sealing element 9 can be limited between the partition 12 and the oil extraction pipe 2.

[0050] Specifically, the engagement structure 230 includes at least one embedded protrusion 23 and a second embedded groove 142 that mates with the embedded protrusion 23, with the embedded protrusion 23 placed within the second embedded groove 142. The embedded protrusion 23 is disposed on the main unit 1, and the second embedded groove 142 is located on the sucker pipe 2; alternatively, the embedded protrusion is disposed on the sucker pipe 2, and the second embedded groove 142 is located on the main unit 1.

[0051] In one embodiment, the main unit 1 includes a first side shell 13 and a second side shell 14. The first side shell 13 and the second side shell 14 are connected to form a control cavity 10, a transfer cavity 101, and a partition 12. Embedded protrusions 23 are located on the first side shell 13 and / or the second side shell 14. There are multiple embedded protrusions 23 and second embedded grooves 142. The first side shell 13 and the second side shell 14 are connected to fix the oil suction pipe 2 to the main unit 1. Specifically, the first side shell 13 and the second side shell 14 can be connected by screws, clips, or ultrasonic pressing.

[0052] In one embodiment, a connecting pipe 21 protrudes from the side wall of the sucker pipe 2. A clearance hole 141 communicating with the transition cavity 101 is provided on the first side shell 13 or the second side shell 14. The connecting pipe 21 passes through the clearance hole 141, and the oil outlet pipe 3 is connected to the connecting pipe 21. The connecting pipe 21 is configured to facilitate the connection and communication between the sucker pipe 2 and the oil outlet pipe 3.

[0053] In one embodiment, one end of the oil outlet pipe 3 is sleeved on the outside of the connecting pipe 21 and pressed by the clamping ring 8 to improve the stability of the connection between the oil outlet pipe 3 and the connecting pipe 21.

[0054] In one embodiment, the outer wall of the connecting pipe 21 is provided with a locking groove 22, and the inner wall of the clamping ring 8 is provided with a clamping protrusion 81 corresponding to the position of the locking groove 22. The clamping protrusion 81 is interference-fitted with the outer wall of the oil outlet pipe 3 to press part of the oil outlet pipe 3 into the locking groove 22, so as to stably fix the oil outlet pipe 3 on the connecting pipe 21.

[0055] In the above embodiment, the host 1 is provided with a switch 11 that is electrically connected to the circuit board 7 for controlling the operation of the pump body 5. The user can turn the pump body 5 on or off by operating the switch 11. The electrical connection between the wire 50 and the pump body 5 can be sealed with glue to prevent electricity from coming into contact with oil and causing safety hazards.

[0056] In one embodiment, the circuit board 7 is located at the end of the battery 6 away from the oil extraction pipe 2, and the switch 11 is located on the end face of the main unit 1 away from the oil extraction pipe 2, so as to avoid the switch 11 affecting the user's grip on the main unit 1 when the main unit 1 is used as a user handle.

[0057] In one embodiment, the main unit 1 is provided with a power interface 71 for connecting to an external power source. The power interface 71 is electrically connected to the circuit board 7, and the battery 6 is a rechargeable battery. By connecting to an external power source through the power interface 71, the battery 6 can be charged via the circuit board 7, thereby improving the service life of the portable oil pump in this embodiment.

[0058] In one embodiment, the battery 6 is a dry cell battery. The main unit 1 has a removable battery cover at the position corresponding to the dry cell battery, so that when the battery 6 is depleted, the battery cover can be removed for easy replacement by the user. Specifically, in this embodiment, there are two batteries 6, arranged sequentially away from the oil extraction pipe 2. In this state, the height of the main unit 1 is relatively high. The main unit 1 and the oil extraction pipe 2 are integrated, and the outer wall of the main unit 1 is easy for the user to hold, so that the user can insert the oil extraction pipe 2 into the oil container. The main unit 1 also makes it easy for the user to pick up the product, making it convenient for the user to use. Of course, in other embodiments, the number of dry cell batteries can also be one, three, four, etc., and when there are multiple dry cell batteries, they can be arranged side by side, etc.

[0059] It should be noted that all directional indicators (such as up, down, left, right, front, back, etc.) in this utility model embodiment are only used to explain the relative positional relationship and movement of each component in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicator will also change accordingly.

[0060] Furthermore, the use of terms such as "first" and "second" in this utility model is for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the term "and / or" throughout the text includes three solutions; taking A and / or B as an example, it includes technical solution A, technical solution B, and a technical solution that simultaneously satisfies A and B. Furthermore, the technical solutions of various embodiments can be combined with each other, but this must be based on the ability of a person skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this utility model.

[0061] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. All equivalent structural transformations made under the inventive concept of the present utility model using the contents of the present utility model specification and drawings, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present utility model.

Claims

1. A portable oil well pump characterized by, The utility model relates to a portable oil pump, including: A host, which is provided with a control cavity and a first wire hole communicating with the control cavity, and is provided with a circuit board and a battery electrically connected with the circuit board in the control cavity; An oil extraction pipe connected with the host; A pump body arranged in the oil extraction pipe, the pump body being connected with the circuit board through an electric wire, a sealing element being arranged between the oil extraction pipe and the host, the sealing element being made of soft rubber, the electric wire being electrically connected with the circuit board after passing through the sealing element and the first wire hole, the electric wire being in interference fit with the sealing element and / or the first wire hole; An oil outlet pipe communicating with the oil extraction pipe, the pump body driving to extract oil and output the oil from the oil outlet pipe through the oil extraction pipe.

2. The portable pump according to claim 1, wherein The sealing element comprises a first embedding block and a limiting block formed by the first embedding block extending outwardly; The oil extraction pipe is provided with a first embedding groove at one end close to the circuit board, the oil extraction pipe is provided with a second wire hole communicating with the inside of the oil extraction pipe and the first embedding groove respectively, the limiting block is located between the oil extraction pipe and the host, the first embedding block is arranged in the first embedding groove, and the electric wire passes through the second wire hole, the first embedding block and the limiting block.

3. The portable pump as defined in claim 2, wherein, The sealing element further comprises a second embedding block, the second embedding block being connected to the surface of the first embedding block away from the limiting block, the second embedding block being arranged in the second wire hole, and the electric wire passing through the second embedding block.

4. The portable pump according to claim 3, wherein The cross sections of the second embedding block, the first embedding block and the limiting block are sequentially reduced.

5. The portable pump according to claim 4, wherein, The sealing element is provided with a third wire hole penetrating through the second embedding block, the first embedding block and the limiting block, the electric wire passing through the third wire hole, and the electric wire being in interference fit with one or more of the second embedding block, the first embedding block and the limiting block; The oil extraction pipe is provided with a separation protrusion on the inner side wall, the third wire hole is located on the separation protrusion, the second embedding block is provided with a clamping block at one end away from the first embedding block, and the clamping block, the first embedding block and the second embedding block form a clamping groove, and the separation protrusion is arranged in the clamping groove.

6. The portable oil pump according to claim 5, wherein The second embedding block is in interference fit with the sidewall of the second wire hole; The surface of the first embedding block close to the second embedding block is in abutment with the bottom surface of the first embedding groove, the opposite surfaces of the limiting block are in abutment with the host and the oil extraction pipe respectively, and / or the outer sidewall of the first embedding block is in interference fit with the sidewall of the first embedding groove.

7. The portable pump according to claim 1, wherein The host is further provided with an adapter cavity, one end of the oil extraction pipe is arranged in the adapter cavity, the host is provided with a partition plate between the adapter cavity and the control cavity, the first wire hole is located on the partition plate, and the sealing element is at least partially arranged between the partition plate and the oil extraction pipe; The host and the oil extraction pipe are provided with a joint structure, the joint structure being located at one end of the adapter cavity away from the control cavity; The joint structure comprises at least one embedding protrusion and a second embedding groove matched with the embedding protrusion, and the embedding protrusion is arranged in the second embedding groove.

8. The portable pump according to claim 7, wherein, The host comprises a first side shell and a second side shell, the first side shell and the second side shell are connected to form the control cavity and the adapter cavity, the embedding protrusion is located on the first side shell and / or the second side shell, and the number of the embedding protrusion and the second embedding groove is plural.

9. The portable pump according to claim 1, wherein, The oil extraction pipe is protruded to form a connecting pipe on the side wall close to the circuit board, the host computer is provided with an avoiding hole communicated with the switching cavity, the connecting pipe passes through the avoiding hole, and the oil outlet pipe is connected with the connecting pipe.

10. The portable pump according to claim 9, wherein, One end of the oil outlet pipe is sleeved outside the connecting pipe and is pressed by the pressing ring. The outer side wall of the connecting pipe is provided with a locking groove, the inner side wall of the pressing ring is provided with a pressing protrusion corresponding to the position of the locking groove, and the pressing protrusion is in interference fit with the outer side wall of the oil outlet pipe.

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