Table type pressure pump with filtering structure

Abstract

The utility model discloses a table type pressure pump with a filtering structure, which relates to the field of table type pressure pumps and comprises a table type pressure pump, the tail end of an oil pipe of the table type pressure pump is connected with two connecting pipes, the top ends of the connecting pipes are connected with a filtering cavity, and the top end of the filtering cavity is connected with a connector. One connector is connected with a standard pressure gauge, the other connector is connected with a tested pressure gauge, and filtering mechanisms are distributed on the filtering cavity and the connecting pipe; the filtering mechanism is used for filtering impurities flowing out of the tested pressure gauge, and the middle section of the filtering mechanism is provided with an opening and closing mechanism. According to the utility model, through the arrangement of the filtering mechanism and the opening and closing mechanism, oil dirt and impurities at the end part of the pressure gauge to be detected can be effectively filtered, and after the table type pressure pump is used for a certain time, the impurities are cleaned and taken out, so that the service life of the device is effectively prolonged.

Description

Technical Field

[0001] The utility model relates to the field of bench pressure pumps, in particular to a bench pressure pump with a filtering structure. Background Technique

[0002] The bench hydraulic pressure pump can calibrate auxiliary equipment such as pressure (differential pressure) transmitters, precision pressure gauges, ordinary pressure gauges, pressure switches, etc. It cooperates with a pressure standard device to complete the detection and calibration work.

[0003] When detecting a pressure gauge, before and during its use after production, in order to ensure the accuracy of the pressure gauge, a bench pressure pump is required for detection. However, for a pressure gauge that has been used for a period of time, there is generally scale residue at its end. If it enters the oil pipe of the bench pressure pump, it is not easy to clean, which affects the normal use of the equipment. Therefore, a bench pressure pump with a filtering structure is proposed. Content of the Utility Model

[0004] The purpose of the utility model is to provide a bench pressure pump with a filtering structure to solve the problems in the above background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A bench pressure pump with a filtering structure, including a bench pressure pump. The end of the oil pipe of the bench pressure pump is connected with two connecting pipes. The top of the connecting pipe is connected with a filtering cavity. The top of the filtering cavity is connected with a connecting head. One connecting head is connected with a standard pressure gauge, and the other connecting head is connected with a pressure gauge to be measured. Filtering mechanisms are distributed on the filtering cavity and the connecting pipe;

[0006] The filtering mechanism is used to filter impurities flowing out of the pressure gauge to be measured, and an opening and closing mechanism is installed in the middle section of the filtering mechanism;

[0007] The opening and closing mechanism in the closed state is used to make the hydraulic oil in the oil pipe flow normally, and the opening and closing mechanism in the open state is used to clean the filtered impurities.

[0008] As a further scheme of the utility model: The filtering mechanism includes a filter plate fixedly installed in the inner cavity of the filtering cavity, and the filter plate is arranged in an inclined state;

[0009] The outer wall of the filtering cavity is fixedly connected with a first oil return pipe, and the first oil return pipe is communicated with the inner cavity of the filtering cavity. The input end of the first oil return pipe is located at the lowest point of the filter plate;

[0010] The output end of the first oil return pipe is connected with a filter pipe, and the output end of the filter pipe is connected with a second oil return pipe communicated with the inner cavity of the connecting pipe;

[0011] Valves are installed on both the first return oil pipe and the second return oil pipe.

[0012] As a further solution of the present utility model: The opening and closing mechanism includes a rotating plate rotatably connected to the filter pipe. Spiral grooves are formed on the surfaces of both the filter pipe and the rotating plate. When the spiral grooves on the filter pipe and the rotating plate are in a spliced state, they are in a continuous state.

[0013] Receiving grooves are formed on the inner walls of both the rotating plate and the filter pipe, and filter nets are snap-connected to the inner walls of the receiving grooves.

[0014] A screw sleeve is threadedly connected to the outer wall of the filter pipe through the spiral groove, and a hexagonal head is formed on the outer wall of the screw sleeve.

[0015] As a further solution of the present utility model: Rotating seats are installed at one ends of the rotating plate and the filter pipe connected to each other, and the two rotating seats are rotatably connected through a rotating shaft.

[0016] As a further solution of the present utility model: First sealing rings are arranged at the contact positions between the rotating plate and the filter pipe, and the first sealing rings are used to improve the sealing performance at the contact positions between the rotating plate and the filter pipe.

[0017] As a further solution of the present utility model: Second sealing rings are arranged at the connection positions between the frame of the filter net and the receiving groove, and the second sealing rings are used to improve the sealing performance at the contact positions between the frame of the filter net and the receiving groove.

[0018] As a further solution of the present utility model: The screw sleeve is movably connected to the outer wall of the filter pipe, and the screw sleeve in a tightened state is used to provide an extrusion force to the rotating plate in a closed state.

[0019] Compared with the prior art, the beneficial effects of the present utility model are:

[0020] 1. By setting the filtering mechanism and the opening and closing mechanism, the oil scale and impurities at the end of the pressure gauge to be detected can be effectively filtered, and after the bench type pressure pump has been used for a certain period of time, the impurities can be cleaned and taken out, effectively improving the service life of the device. Description of the Drawings

[0021] Figure 1 is a structural schematic diagram of the present utility model;

[0022] Figure 2 is a structural schematic diagram of the filtering mechanism of the present utility model;

[0023] Figure 3 is an internal structural schematic diagram of the filtering mechanism of the present utility model;

[0024] Figure 4 is a schematic structural diagram of the opening and closing mechanism of the present utility model;

[0025] Figure 5 is a schematic diagram of the mechanism of another perspective of the opening and closing mechanism of the present utility model.

[0026] In the figure: 1, bench type pressure pump; 2, connecting pipe; 3, filtering chamber; 4, connecting head; 5, first oil return pipe; 6, filtering pipe; 7, second oil return pipe; 8, valve; 9, filter plate; 10, rotating plate; 11, spiral groove; 12, rotating seat; 13, screw sleeve; 14, hexagonal head; 15, filter net; 16, accommodating groove. Specific embodiments

[0027] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without making creative efforts shall fall within the protection scope of the present utility model.

[0028] Please refer to Figures 1 to 5 , in the embodiment of the present utility model, a bench type pressure pump with a filtering structure includes a bench type pressure pump 1. The end of the oil pipe of the bench type pressure pump 1 is connected with two connecting pipes 2. The top of the connecting pipe 2 is connected with a filtering chamber 3. The top of the filtering chamber 3 is connected with a connecting head 4. One connecting head 4 is connected with a standard pressure gauge, and the other connecting head 4 is connected with a pressure gauge to be measured. Filtering mechanisms are distributed on the filtering chamber 3 and the connecting pipe 2;

[0029] The filtering mechanism is used to filter the impurities flowing out of the pressure gauge to be measured. An opening and closing mechanism is installed in the middle section of the filtering mechanism;

[0030] The opening and closing mechanism in the closed state is used to make the hydraulic oil in the oil pipe flow normally, and the opening and closing mechanism in the open state is used to clean the filtered impurities.

[0031] In this embodiment: Remove the plug of the connecting head 4 (the plug is threadedly connected with the connecting head 4), and then connect the pressure gauge to be measured and the standard pressure gauge to the two connecting heads 4 respectively. At this time, since the pressure gauge to be measured has been used, the impurities attached to it may enter the filtering chamber 3 along the connecting head 4;

[0032] The impurities entering the filtering chamber 3 fall and are blocked by the filtering mechanism and collected. After long-term use, the impurities concentrated in the opening and closing mechanism can be cleaned by opening the opening and closing mechanism.

[0033] Please pay special attention to refer to Figure 2 AndFigure 3 , the filtering mechanism includes a filter plate 9 fixedly installed in the inner cavity of the filtering chamber 3, and the filter plate 9 is arranged in an inclined state;

[0034] The outer wall of the filtering chamber 3 is fixedly connected with a first oil return pipe 5, the first oil return pipe 5 is communicated with the inner cavity of the filtering chamber 3, and the input end of the first oil return pipe 5 is located at the lowest point of the filter plate 9;

[0035] The output end of the first oil return pipe 5 is connected with a filter pipe 6, and the output end of the filter pipe 6 is connected with a second oil return pipe 7 communicated with the inner cavity of the connecting pipe 2;

[0036] Valves 8 are installed on both the first oil return pipe 5 and the second oil return pipe 7.

[0037] In this embodiment: when it is not necessary to remove the impurities to be filtered, the two valves 8 are in an open state all the time. The hydraulic oil provides pressure to the pressure gauge to be measured and the standard pressure gauge under the action of pressure. Since the two connecting pipes 2 are communicated through an oil pipe, the pressures received by the pressure gauge to be measured and the standard pressure gauge are the same. After the pressure is relieved, the hydraulic oil flows back. At this time, the impurities attached to the surface of the filter plate 9 flow into the first oil return pipe 5 along the surface of the filter plate 9 under the action of the flow of the hydraulic oil, and enter the filter pipe 6 through the first oil return pipe 5. At this time, the hydraulic oil flowing back through the first oil return pipe 5 enters the second oil return pipe 7 through the filter pipe 6, and the impurities are intercepted in the filter pipe 6;

[0038] After using for a certain period of time, when it is necessary to discharge and clean the impurities, close the two valves 8, and then open the opening and closing mechanism.

[0039] Please refer specifically to Figure 4 and Figure 5 , the opening and closing mechanism includes a rotating plate 10 rotatably connected to the filter pipe 6. The surfaces of the filter pipe 6 and the rotating plate 10 are both provided with spiral grooves 11. When the spiral grooves 11 on the filter pipe 6 and the rotating plate 10 are in a splicing state, they are in a continuous state;

[0040] Receiving grooves 16 are opened on the inner walls of both the rotating plate 10 and the filter pipe 6, and a filter net 15 is snap-fitted to the inner wall of the receiving groove 16;

[0041] The outer wall of the filter pipe 6 is threadedly connected with a screw sleeve 13 through the spiral groove 11, and a hexagonal head 14 is formed on the outer wall of the screw sleeve 13.

[0042] In this embodiment: when opening the opening and closing mechanism, use a wrench to engage with the hexagonal head 14, and then drive the hexagonal head 14 to rotate by rotating the wrench. The hexagonal head 14 drives the screw sleeve 13 to rotate. The screw sleeve 13 rotates upward until the screw sleeve 13 is completely misaligned with the rotating plate 10. At this time, the rotating plate 10 can be opened, and the filter net 15 can be taken out for cleaning or replacement;

[0043] After cleaning or replacement is completed, reinsert the filter net 15 into the receiving groove 16, close the rotating plate 10, and then drive the hexagonal head 14 to rotate in the reverse direction by means of a wrench. At this time, the screw sleeve 13 rotates downward until the screw sleeve 13 is completely engaged with the spiral groove 11. At this point, the opening and closing mechanism can be closed.

[0044] Please refer specifically to Figure 3 , rotating seats 12 are installed at both ends of the rotating plate 10 connected to the filter pipe 6, and the two rotating seats 12 are rotationally connected through a rotating shaft.

[0045] In this embodiment: The rotating shaft provides the rotation center for the rotating plate 10 and the rotating seat 12 connected thereto, achieving the purpose that the rotating plate 10 can rotate relative to the filter pipe 6.

[0046] Please refer specifically to Figure 4 and Figure 5 , first sealing rings are provided at the contact positions between the rotating plate 10 and the filter pipe 6. The first sealing rings are used to improve the sealing performance at the contact positions between the rotating plate 10 and the filter pipe 6; the screw sleeve 13 is movably connected to the outer wall of the filter pipe 6, and the screw sleeve 13 in the tightened state is used to provide an extrusion force to the rotating plate 10 in the closed state.

[0047] In this embodiment: During the tightening process of the screw sleeve 13, the screw sleeve 13 squeezes and limits the rotating plate 10. At this time, the first sealing ring deforms under the extrusion force, completely blocking the gap between the rotating plate 10 and the filter pipe 6 to prevent oil leakage.

[0048] Please refer specifically to Figure 5 , second sealing rings are provided at the connection positions between the frame of the filter net 15 and the receiving groove 16. The second sealing rings are used to improve the sealing performance at the contact positions between the frame of the filter net 15 and the receiving groove 16.

[0049] In this embodiment: During the tightening process of the screw sleeve 13, the rotating plate 10 simultaneously applies an extrusion force to the frame of the filter net 15. The extrusion force causes the second sealing ring to deform, and the second sealing ring seals the gap between the receiving groove 16 and the frame of the filter net 15 to prevent impurities from entering the second oil return pipe 7 through the gap.

[0050] The above is only the preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A desktop pressure pump with a filtering structure, comprising a desktop pressure pump (1), wherein the end of the oil pipe of the desktop pressure pump (1) is connected to two connecting pipes (2), the top end of the connecting pipe (2) is connected to a filtering chamber (3), the top end of the filtering chamber (3) is connected to a connecting head (4), one of the connecting heads (4) is connected to a standard pressure gauge, and the other of the connecting heads (4) is connected to a pressure gauge to be measured, characterized in that: Filter mechanisms are distributed on the filter chamber (3) and the connecting pipe (2); The filtering mechanism is used to filter impurities flowing out of the pressure gauge being tested, and an opening and closing mechanism is installed in the middle section of the filtering mechanism; The opening and closing mechanism in the closed state is used to allow the hydraulic oil in the oil pipe to circulate normally, and the opening and closing mechanism in the open state is used to clean the impurities under filtration.

2. A desktop pressure pump with a filtering structure according to claim 1, characterized in that: The filtering mechanism comprises a filtering plate (9) fixedly mounted in the inner cavity of the filtering cavity (3), wherein the filtering plate (9) is arranged in an inclined state; A first oil return pipe (5) is fixedly connected to the outer wall of the filter chamber (3), the first oil return pipe (5) is in communication with the inner cavity of the filter chamber (3), and an input end of the first oil return pipe (5) is located at the lowest point of the filter plate (9); The output end of the first oil return pipe (5) is connected to a filter pipe (6), and the output end of the filter pipe (6) is connected to a second oil return pipe (7) which is in communication with the inner cavity of the connecting pipe (2); Valves (8) are installed on both the first oil return pipe (5) and the second oil return pipe (7).

3. A desktop pressure pump with a filtering structure according to claim 2, characterized in that: The opening and closing mechanism comprises a rotating plate (10) rotatably connected to the filter tube (6), the filter tube (6) and the rotating plate (10) are both provided with spiral grooves (11) on their surfaces, and the spiral grooves (11) on the filter tube (6) and the rotating plate (10) are in a continuous state when in a spliced ​​state; The rotating plate (10) and the inner wall of the filter tube (6) are both provided with a receiving groove (16), and the inner wall of the receiving groove (16) is snap-fitted with a filter screen (15); The outer wall of the filter tube (6) is threadedly connected to a screw sleeve (13) via a spiral groove (11), and the outer wall of the screw sleeve (13) is formed with a hexagonal head (14).

4. A desktop pressure pump with a filtering structure according to claim 3, characterized in that: One end of the rotating plate (10) connected to the filter tube (6) is mounted with a rotating seat (12), and the two rotating seats (12) are rotatably connected via a rotating shaft.

5. The desktop pressure pump with a filtering structure according to claim 3, characterized in that: A first sealing ring is provided at the contact position between the rotating plate (10) and the filter tube (6), and the first sealing ring is used to improve the sealing performance of the contact position between the rotating plate (10) and the filter tube (6).

6. The desktop pressure pump with a filtering structure according to claim 3, characterized in that: A second sealing ring is provided at the connection position between the frame of the filter screen (15) and the receiving groove (16), and the second sealing ring is used to improve the sealing performance of the contact position between the frame of the filter screen (15) and the receiving groove (16).

7. A desktop pressure pump with a filtering structure according to claim 3, characterized in that: The screw sleeve (13) is movably connected to the outer wall of the filter tube (6), and the screw sleeve (13) in a tightened state is used to provide a squeezing force to the rotating plate (10) in a closed state.

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