Coal oil pump device with air valve

Abstract

The utility model relates to the technical field of coal oil pumps, and discloses a coal oil pump device with an air valve, which comprises a shell, an oil pumping pipe assembly is arranged on the shell, the oil pumping pipe assembly comprises an oil suction pipe and an oil outlet pipe, a channel for communicating the oil suction pipe with the oil outlet pipe is arranged on the shell, an electric pump is arranged in the oil suction pipe, and a threaded cover is arranged on the shell. The threaded cover is used for being in threaded connection with an external oil storage container, the oil suction pipe is arranged on the inner side of the threaded cover, a cavity is formed in the inner side of the threaded cover, the shell comprises an inner cavity communicated with the outside, the shell is provided with a one-way communicated air valve, and the air valve is communicated from the inner cavity to the cavity. According to the coal oil pump device with the air valve, the air valve is simple in structure and low in production cost; and external air can be sucked through the air valve when negative pressure is generated in the oil storage container, so that the negative pressure in the oil storage container is balanced, subsequent smooth extraction of kerosene is guaranteed, the oil extraction efficiency is high, and the use experience is good.

Description

Technical Field

[0001] The utility model relates to the technical field of kerosene pumps, in particular to a kerosene pump device with an air valve. Background Art

[0002] A kerosene heater is a device that uses kerosene as raw material, infrared radiation heating, is not afraid of wind, and can directly heat the surface and interior of an object for heating. A chamber for accommodating kerosene is provided inside the kerosene heater. When in use, it is necessary to first add an appropriate amount of kerosene to the chamber in order for the kerosene heater to work properly. Kerosene is generally stored in a slightly larger oil storage barrel, and then the kerosene in the oil storage barrel is extracted into a small container through a kerosene pump device to be added to the heater for use. In some existing kerosene pump devices, the oil extraction pipe is placed in a large-capacity oil storage barrel to extract kerosene. After a period of time, the kerosene liquid level in the oil storage barrel drops, resulting in negative pressure in the oil storage barrel, which in turn makes it difficult to smoothly extract the remaining kerosene, resulting in a poor user experience. Utility Model Content

[0003] In order to solve at least one aspect of the above problems, the utility model provides a kerosene pump device with an air valve, comprising: a shell, an oil extraction pipe assembly is arranged on the shell, the oil extraction pipe assembly comprises an oil suction pipe and an oil outlet pipe, the shell is provided with a channel for connecting the oil suction pipe and the oil outlet pipe, an electric pump is arranged in the oil suction pipe, a threaded cover is arranged on the shell, the threaded cover is used for threaded connection with an external oil storage container, the oil suction pipe is arranged on the inner side of the threaded cover, a cavity is formed on the inner side of the threaded cover, the shell comprises an inner cavity communicating with the outside, a unidirectional air valve is arranged on the shell, and the conducting direction of the air valve is: conducting from the inner cavity to the cavity; the kerosene pump device with an air valve of the utility model has a simple air valve structure and low production cost; the air valve can inhale the outside air when negative pressure is generated in the oil storage container to balance the negative pressure in the oil storage container, thereby ensuring the smooth extraction of subsequent kerosene, high oil extraction efficiency and good user experience.

[0004] Optionally, the air valve includes a breathable valve hole and an elastically deformable valve diaphragm, the valve diaphragm corresponds to the breathable valve hole, the breathable valve hole is sealed / opened by the valve diaphragm, the breathable valve hole is opened on the shell, and the valve diaphragm is connected to the shell; when the breathable valve hole is opened, the inner cavity and the cavity are connected through the breathable valve hole.

[0005] Optionally, a plurality of the ventilation valve holes are provided, and the plurality of ventilation valve holes are distributed in a circular shape with equal intervals.

[0006] Optionally, the valve membrane is in a disc shape, and the air-permeable valve hole is in a fan shape.

[0007] Optionally, the valve diaphragm is placed at the lower side of the air-permeable valve hole, the valve diaphragm is in an arc shape that bends upward, and an abutting portion for abutting and sealing against the housing is formed at the edge of the valve diaphragm.

[0008] Optionally, a connecting column is provided on the valve diaphragm, a plug hole corresponding to the connecting column is provided on the shell, and a limiting portion for abutting against the shell for limiting position is provided on the connecting column.

[0009] Optionally, a reinforcing rib is integrally provided on the upper side of the valve diaphragm, the reinforcing rib is formed at a connecting portion between the valve diaphragm and the connecting column, and the reinforcing rib is in the shape of an annular sheet.

[0010] Optionally, the shell is provided with a battery compartment and a circuit board, the battery compartment and the electric pump are electrically connected to the circuit board, the battery compartment is used to install dry batteries for power supply; the shell is provided with a through hole for connecting the inner cavity with the outside world.

[0011] Optionally, a hollow boss is provided at the bottom of the shell, the threaded cover is connected to the boss, a mounting groove corresponding to the boss is provided on the threaded cover, the boss passes through the mounting groove, and the air valve is provided on the bottom plate of the boss.

[0012] Optionally, an outer flange is annularly arranged on the side wall of the boss, and an inner flange that abuts against and limits the outer flange is formed at the notch of the installation slot.

[0013] Compared with the prior art, the utility model of the kerosene pump device with an air valve has a simple air valve structure and low production cost; the air valve can be used to inhale external air when negative pressure is generated in the oil storage container to balance the negative pressure in the oil storage container, thereby ensuring smooth extraction of subsequent kerosene, high oil extraction efficiency and good user experience; a plurality of air valve holes are provided, and the plurality of air valve holes are distributed in a circular shape with equal spacing to ensure smooth air intake; the valve diaphragm is in the shape of a disc, and the air valve hole is in the shape of a fan, and the shape of the air valve hole corresponds to the valve diaphragm to ensure smooth air intake; the valve diaphragm A connecting column is integrally provided on the upper part, a socket corresponding to the connecting column is provided on the shell, and a limiting part for limiting the position against the shell is provided on the connecting column, so the valve diaphragm is easy and stable to assemble; reinforcing ribs are integrally provided on the upper side of the valve diaphragm to enhance the elastic recovery ability of the valve diaphragm and avoid the situation where the valve diaphragm is excessively deformed downward and cannot be restored, and the use is reliable; the structural design is reasonable, the convex column and the air valve in the convex column occupy the longitudinal space in the threaded cover, so that the shell can be designed in a relatively flat shape, and the longitudinal height of the shell is small, which is convenient for carrying and storage. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional diagram of a kerosene pump device with an air valve according to the utility model;

[0015] Figure 2 It is a cross-sectional view of a kerosene pump device with an air valve according to the utility model;

[0016] Figure 3 It is a cross-sectional view of the air valve portion of the kerosene pump device with an air valve of the utility model;

[0017] Figure 4 for Figure 3 Enlarged view of part A in the middle;

[0018] Figure 5 It is a schematic diagram of the structure of the bottom of the housing of the kerosene pump device with an air valve of the utility model;

[0019] Figure 6 This is a schematic structural diagram of the air valve portion of a kerosene pump device with an air valve according to the utility model;

[0020] Figure 7 for Figure 6 Enlarged view of middle part B;

[0021] Figure 8 This is a schematic diagram of the structure of the valve diaphragm of the kerosene pump device with an air valve of the utility model;

[0022] The corresponding component names of the various figure marks in the figure are: 1 is a shell, 11 is a channel, 12 is an inner cavity, 13 is a socket, 14 is a boss, 141 is a bottom plate, 142 is an outer flange, 15 is a through hole, 2 is an oil suction pipe, 3 is an oil outlet pipe, 4 is an electric pump, 5 is a threaded cover, 51 is a cavity, 52 is a mounting groove, 521 is an inner flange, 6 is an air valve, 61 is a breathable valve hole, 62 is a valve diaphragm, 621 is an abutment portion, 622 is a connecting column, 623 is a limiting portion, 624 is a reinforcing rib, 7 is a battery compartment, 8 is a circuit board, and 9 is a switch button. DETAILED DESCRIPTION

[0023] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and understandable, the specific embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0024] In the description of the present invention, it should be understood that the terms "upper" and "lower" and the like indicate positions or location relationships that are based on the positions or location relationships when the product is in normal use.

[0025] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features.

[0026] See also Figure 1-Figure 8, the utility model embodiment provides a kerosene pump device with an air valve, comprising: a shell 1, a pumping pipe assembly is arranged on the shell 1, the pumping pipe assembly includes an oil suction pipe 2 and an oil outlet pipe 3, a channel 11 for connecting the oil suction pipe 2 and the oil outlet pipe 3 is arranged on the shell 1, an electric pump 4 is arranged in the oil suction pipe 2, a threaded cover 5 is arranged on the shell 1, and the threaded cover 5 is arranged on the lower side of the shell 1; the threaded cover 5 is used for threaded connection with an external oil storage container, and the upper end of the external oil storage container is provided with an external thread corresponding to the threaded cover 5, the oil suction pipe 2 is arranged on the inner side of the threaded cover 5, and a cavity 51 is formed on the inner side of the threaded cover 5, the shell 1 includes an inner cavity 12 communicating with the outside, and a unidirectional air valve 6 is arranged on the shell 1, the air The conduction direction of the valve 6 is: from the inner cavity 12 to the cavity 51; the utility model kerosene pump device with an air valve has a simple air valve structure and low production cost; the air valve can inhale external air when negative pressure is generated in the oil storage container to balance the negative pressure in the oil storage container, thereby ensuring the smooth extraction of subsequent kerosene, high oil extraction efficiency and good user experience; when in use, the lower end of the oil suction pipe 2 is placed in the oil storage container, the threaded cover 5 is screwed on the oil storage container, and the start switch button 9 on the shell 1 is pressed to start the electric pump 4, and the electric pump 4 extracts kerosene from bottom to top, so that the kerosene at the lower end of the oil suction pipe 2 is discharged along the oil suction pipe 2, the channel 11 and the oil outlet pipe 3 to a small container for collection, which is easy to use.

[0027] See also Figure 3-Figure 8The air valve 6 includes a breathable valve hole 61 and an elastically deformable valve diaphragm 62, the valve diaphragm 62 is made of rubber or silicone; the valve diaphragm 62 corresponds to the breathable valve hole 61, the breathable valve hole 61 is blocked / opened by the valve diaphragm 62, the breathable valve hole 61 is opened on the shell 1, and the valve diaphragm 62 is connected to the shell 1; when the breathable valve hole 61 is opened, the inner cavity 12 and the cavity 51 are connected through the breathable valve hole 61; when the negative pressure in the oil storage container is small or there is no negative pressure When the negative pressure in the oil storage container increases to the point where air intake balance is required, the valve diaphragm 62 undergoes elastic deformation to open the air valve hole 61 to allow air to enter the oil storage container. The air valve hole 61 is provided with a plurality of air valve holes 61, which are distributed in an annular manner with equal spacing to ensure smooth air intake. The valve diaphragm 62 is in the shape of a disc, and the air valve hole 61 is The air vent hole 61 is fan-shaped, and the shape of the air vent hole 61 corresponds to the valve diaphragm 62, so that the air vent hole 61 is designed to be large enough to ensure smooth air intake; the valve diaphragm 62 is placed on the lower side of the air vent hole 61, and the valve diaphragm 62 is in an arc shape that bends upward under normal conditions. The edge of the valve diaphragm 62 is formed with an abutment portion 621 for sealing against the shell 1. When the valve diaphragm 62 elastically deforms downward, the air vent hole 61 is opened; a connecting column 622 is integrally provided on the valve diaphragm 62, and a connecting column 621 is provided on the shell 1. The connecting column 622 corresponds to the plug-in socket 13, and a limiting portion 623 is provided on the connecting column 622 for limiting the position with the shell 1, so that the valve diaphragm 62 is easy to assemble and stable; a reinforcing rib 624 is integrally provided on the upper side of the valve diaphragm 62 to enhance the elastic recovery ability of the valve diaphragm 62 and avoid the situation where the valve diaphragm 62 is excessively deformed downward and cannot be restored, and the use is reliable; the reinforcing rib 624 is formed at the connecting portion of the valve diaphragm 62 and the connecting column 622, and the reinforcing rib 624 is in the shape of an annular sheet.

[0028] See also Figure 1-Figure 3 The shell 1 is provided with a battery compartment 7 and a circuit board 8. The battery compartment 7 and the electric pump 4 are electrically connected to the circuit board 8. The shell 1 is provided with a through hole 15 for connecting the inner cavity 12 with the outside. There are several through holes 15 to facilitate the intake of air into the shell 1 to ensure that no negative pressure is generated in the shell 1.

[0029] See also Figure 3-Figure 8A hollow boss 14 is provided at the bottom of the shell 1, and the threaded cover 5 is connected to the boss 14. A mounting groove 52 corresponding to the boss 14 is provided on the threaded cover 5. The boss 14 passes through the mounting groove 52, and the air valve 6 is arranged on the bottom plate 141 of the boss 14. The structural design is reasonable. The boss 14 and the air valve 6 in the boss 14 occupy the longitudinal space in the threaded cover 5, so that the shell 1 (except the boss 14 part) can be designed in a relatively flat shape. The longitudinal height of the shell 1 (except the boss 14 part) is small, which is convenient for carrying and storage; an outer flange 142 is provided in an annular manner on the side wall of the boss 14, and an inner flange 521 that is restrained and limited by the outer flange 142 is formed at the notch of the mounting groove 52 to prevent the threaded cover 5 from accidentally falling off the boss 14 downward. The structure is reliable, and the threaded cover 5 is made of POM.

[0030] The utility model discloses a kerosene pump device with an air valve, the air valve has a simple structure and low production cost; when negative pressure is generated in the oil storage container, the air outside can be sucked in through the air valve to balance the negative pressure in the oil storage container, thereby ensuring the smooth extraction of subsequent kerosene, high oil extraction efficiency and good use experience; a plurality of air-permeable valve holes are arranged, and the plurality of air-permeable valve holes are distributed in a circular shape with equal spacing, thereby ensuring smooth air intake; the valve diaphragm is in the shape of a disc, the air-permeable valve hole is in the shape of a fan, and the shape of the air-permeable valve hole corresponds to the valve diaphragm, thereby ensuring smooth air intake; a connecting column is integrally arranged on the valve diaphragm, a plug hole corresponding to the connecting column is arranged on the shell body, a limiting part for limiting the position against the shell body is arranged on the connecting column, and the valve diaphragm is convenient to assemble and stable; a reinforcing rib is integrally arranged on the upper side of the valve diaphragm to strengthen the elastic recovery ability of the valve diaphragm, thereby avoiding the situation that the valve diaphragm is excessively deformed downward and cannot be restored, and the use is reliable; the structural design is reasonable, the convex column and the air valve in the convex column occupy the longitudinal space in the threaded cover, so that the shell body can be designed in a relatively flat shape, the longitudinal height of the shell body is small, and it is convenient to carry and store.

[0031] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the technical principle of the present invention. These improvements and modifications should also be regarded as the protection scope of the present invention.

Claims

1. A kerosene pump device with an air valve, characterized in that: include: A shell (1) is provided with an oil extraction pipe assembly, the oil extraction pipe assembly comprising an oil suction pipe (2) and an oil outlet pipe (3), the shell (1) is provided with a channel (11) for connecting the oil suction pipe (2) and the oil outlet pipe (3), an electric pump (4) is provided in the oil suction pipe (2), the shell (1) is provided with a threaded cover (5), the threaded cover (5) is used for threaded connection with an external oil storage container, the oil suction pipe (2) is placed on the inner side of the threaded cover (5), a cavity (51) is formed on the inner side of the threaded cover (5), the shell (1) comprises an inner cavity (12) connected to the outside, and the shell (1) is provided with a unidirectional air valve (6), the conduction direction of the air valve (6) is: conduction from the inner cavity (12) to the cavity (51).

2. The kerosene pump device with an air valve according to claim 1, characterized in that: The air valve (6) comprises a breathable valve hole (61) and an elastically deformable valve diaphragm (62), wherein the valve diaphragm (62) corresponds to the breathable valve hole (61), and the breathable valve hole (61) is blocked / opened by the valve diaphragm (62), the breathable valve hole (61) is opened on the shell (1), and the valve diaphragm (62) is connected to the shell (1); when the breathable valve hole (61) is opened, the inner cavity (12) and the cavity (51) are connected via the breathable valve hole (61).

3. The kerosene pump device with an air valve according to claim 2, characterized in that: A plurality of the ventilation valve holes (61) are provided, and the plurality of ventilation valve holes (61) are distributed in a ring shape at equal intervals.

4. The kerosene pump device with an air valve according to claim 2, characterized in that: The valve membrane (62) is in the shape of a disc, and the air-permeable valve hole (61) is in the shape of a fan.

5. The kerosene pump device with an air valve according to claim 2, characterized in that: The valve diaphragm (62) is placed on the lower side of the air-permeable valve hole (61), the valve diaphragm (62) is in an upwardly curved arc shape, and an abutting portion (621) for abutting and sealing against the housing (1) is formed on the edge of the valve diaphragm (62).

6. The kerosene pump device with an air valve according to claim 2, characterized in that: The valve diaphragm (62) is provided with a connecting column (622), the housing (1) is provided with a socket (13) corresponding to the connecting column (622), and the connecting column (622) is provided with a limiting portion (623) for limiting the position against the housing (1).

7. The kerosene pump device with an air valve according to claim 6, characterized in that: A reinforcing rib (624) is integrally provided on the upper side of the valve diaphragm (62). The reinforcing rib (624) is formed at the connection portion between the valve diaphragm (62) and the connecting column (622), and the reinforcing rib (624) is in the shape of an annular sheet.

8. The kerosene pump device with an air valve according to claim 1, characterized in that: The housing (1) is provided with a battery compartment (7) and a circuit board (8); the battery compartment (7) and the electric pump (4) are both electrically connected to the circuit board (8); and the housing (1) is provided with a through hole (15) for connecting the inner cavity (12) to the outside.

9. The kerosene pump device with an air valve according to any one of claims 1 to 8, characterized in that: The bottom of the housing (1) is provided with a hollow boss (14), the threaded cover (5) is connected to the boss (14), the threaded cover (5) is provided with a mounting groove (52) corresponding to the boss (14), the boss (14) passes through the mounting groove (52), and the air valve (6) is arranged on a bottom plate (141) of the boss (14).

10. The kerosene pump device with an air valve according to claim 9, characterized in that: An outer flange (142) is provided in an annular shape on the side wall of the boss (14), and an inner flange (521) is formed at the notch of the installation slot (52) and is abutted against the outer flange (142) for limiting position.

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