Adjustable self-sealing electromagnetic pump

Abstract

The utility model relates to the technical field of electromagnetic pumps, in particular to an adjustable self-sealing type electromagnetic pump which comprises a pump body, one side of the pump body communicates with an exhaust hole, the exhaust hole is connected with a sealing valve, the sealing valve comprises a grip and an adjusting rod connected to one end of the grip, and the end, away from the grip, of the adjusting rod is sleeved with an end face sealing ring; a conical face is arranged at the end, close to the pump body, of the inner side of the exhaust hole, the adjusting rod is inserted into the exhaust hole in a threaded connection mode, the end face sealing ring abuts against the inner wall of the exhaust hole and seals the exhaust hole, and a plurality of pressure intensity scale marks are arranged on the periphery of the adjusting rod at intervals. The overflow structure of the overflow electromagnetic valve has the advantages of being high in original shape recovery and capable of being quantitatively adjusted.

Description

Technical Field

[0001] The present application relates to the technical field of electromagnetic pumps, and particularly relates to an adjustable self-sealing electromagnetic pump. Background Art

[0002] An overflow electromagnetic pump is a pump that uses electromagnetic force to drive the flow of liquid and maintains a stable flow rate and pressure through overflow control. It is widely used in industrial, medical, and laboratory applications that require precise liquid control. To prevent the formation of air resistance or vacuum in the pump chamber during flow control, which may cause obstruction of liquid discharge, an openable and closable exhaust hole is provided at the upper end of one side of the pump body.

[0003] The overflow electromagnetic pump drives the movement of a piston or diaphragm inside the pump through the magnetic field generated by an electromagnetic coil, changing the volume of the pump chamber to suck in and discharge liquid. To control the pressure and flow rate of the liquid, an overflow valve is equipped at the hydraulic end of the pump. The overflow control at the hydraulic end of the electromagnetic pump is generally achieved by using an elastic element, and the linear characteristics of the compression or extension of the elastic element are used to adjust the pressure. Specifically, at high pressure, elastic elements such as springs inside the overflow valve are compressed, opening the valve to release excess liquid, so that the system pressure reaches the set value; when the pressure drops to the set range, the elastic element deforms and recovers, closing the valve to ensure the stability of the system.

[0004] However, under the requirements of small pump flow rate and high filling accuracy, the error range of the elastic element is relatively large, and the recoverable original torque is insufficient; moreover, the service life of the elastic element is limited, and the working life of the sealing medium at the elastic element is also limited, and the replacement of both is relatively troublesome. Therefore, in this type of pump field, there is an urgent need for an overflow structure with high restoration and quantifiable adjustment. Utility Model Content

[0005] In order to solve the problems of the prior art and obtain an overflow pump with an overflow structure that combines high restoration and quantifiable adjustment characteristics, the present application provides an overflow electromagnetic pump.

[0006] The overflow pump provided by the present application adopts the following technical solutions:

[0007] An adjustable self-sealing electromagnetic pump, comprising a pump body, an exhaust hole is communicated with one side of the pump body, the exhaust hole is connected with a sealing valve, the sealing valve includes a grip, an adjusting rod connected to one end of the grip, and an end face sealing ring is sleeved on the end of the adjusting rod away from the grip; a conical surface is provided at the inner side of the exhaust hole near the pump body end, the adjusting rod is inserted and threadedly connected into the exhaust hole, the end face sealing ring abuts against the inner wall of the exhaust hole and seals the exhaust hole, and a plurality of pressure scale lines are arranged at intervals on the outer periphery of the adjusting rod.

[0008] By adopting the above technical scheme, the pressure is adjusted through the exhaust hole of the pump body, and the oblique interference self-sealing structure is designed by using the conical surface and the end face sealing ring. During the start-up and stop of the pump group, the sealing valve can be disassembled and assembled according to actual needs for rapid exhaust or sealing operations. After the exhaust is completed, the exhaust hole is sealed, and the sealing valve is rotated according to the visual scale to quickly complete the output pressure setting that matches the working conditions, thereby reducing the professional requirements for the overflow setting operation after emptying. In addition, the design of using oblique interference changes to achieve different overflow pressure protections effectively avoids the stiffness error of general elastic elements and the shrinkage problem after compression. Especially after long-term use, this design can prevent the pump group from erroneous overflow protection, and the replacement of the sealing ring is simple and easy. If the sealing ring is aged and fails, it is only necessary to disassemble the sealing valve and replace the sealing ring.

[0009] Optionally, a rod body sealing ring is sleeved on the outer periphery of the adjusting rod, and the rod body sealing ring abuts against the inner wall of the exhaust hole.

[0010] By adopting the above technical solution and double-layer sealing design, the reliability and accuracy of the output pressure setting are further improved.

[0011] Optionally, an end face accommodating groove for embedding the end face sealing ring and a rod body accommodating groove for embedding the rod body sealing ring are formed on the outer periphery of the adjusting rod.

[0012] Optionally, the pressure scale line includes a short line and a long line; the long line is used to mark an integer multiple of a decimal place, the short line is arranged between adjacent long lines, and the short line is used to divide the interval between adjacent long lines according to the pressure change.

[0013] By adopting the above technical solution, the pressure values ​​are distinguished by long lines and short lines, which is convenient for observation.

[0014] Optionally, one short line is provided between adjacent long lines, and the short line is used to mark odd multiples of 0.05.

[0015] By adopting the above technical solution, the pressure required by the working conditions generally does not exceed 0.4MPa. While combining the actual working conditions, the number of short lines is minimized to improve the convenience of reading.

[0016] Optionally, the handle is hollow and arranged around the outer circumference of the adjusting rod, and a deformation groove communicating with the outside is opened inside the adjusting rod.

[0017] By adopting the above technical solution, on the one hand, it saves material and makes the sealing valve lighter as a whole; on the other hand, the provision of the deformation groove enhances the adaptability of the adjusting rod to the conical surface.

[0018] Optionally, the end face of the end of the adjusting rod away from the grip protrudes outward to form an arc surface.

[0019] By adopting the above technical solution, the arc surface can enhance the structural strength, avoid stress concentration and wear, extend the service life of the structure at this place, and improve the reliability and stability of the system.

[0020] In summary, the present application includes at least one of the following beneficial technical effects:

[0021] 1. The present application adjusts the pressure through the exhaust hole provided by the pump body, and uses the conical surface and the end face seal ring to cooperate to design an inclined interference self-sealing structure, so that the exhaust hole has both the functions of exhausting and pressurizing. During the start-up and stop processes of the pump group, rapid exhaust can be fully realized. After the exhaust is completed, the output pressure required by the matching working conditions can be quickly set according to the visual scale, reducing the professional requirements for the overflow setting operation after emptying; because the inclined interference change is used to achieve different overflow pressure protections, the stiffness error of general elastic elements and the shrinkage problem after compression are effectively avoided. Especially after long-term use, this design can prevent the pump group from having false overflow protection; generally speaking, the use of different interference self-sealing structures truly realizes the purpose of accurately injecting the medium with high precision. Description of the Drawings

[0022] Figure 1 is a schematic diagram of the overall structure of the adjustable self-sealing electromagnetic pump.

[0023] Figure 2 is a cross-sectional view of the adjustable self-sealing electromagnetic pump.

[0024] Figure 3 is a schematic diagram of the cooperation between the sealing valve, the end face seal ring and the rod body seal ring.

[0025] Description of the reference numerals: 1, pump body; 11, exhaust hole; 111, conical surface; 2, sealing valve; 21, grip; 22, adjusting rod; 221, arc surface; 222, end face accommodation groove; 223, rod body accommodation groove; 224, deformation groove; 3, end face seal ring; 4, rod body seal ring; 5, pressure scale line. Detailed Description of the Embodiment

[0026] The following is a further detailed description of the present application in conjunction with the attached Figures 1-3 to the present application.

[0027] A coordinate system XYZ is set in this article, where the positive direction of the Z-axis represents the upper side, the negative direction of the Z-axis represents the lower side, the positive direction of the Y-axis represents the front, the negative direction of the Y-axis represents the rear, the positive direction of the X-axis represents the right side, and the negative direction of the X-axis represents the left side.

[0028] The embodiment of the present application discloses an adjustable self-sealing electromagnetic pump. Refer to Figure 1, the adjustable self-sealing electromagnetic pump includes a pump body 1 with an exhaust hole 11 connected to the left side. A sealing valve 2 is detachably connected in the exhaust hole 11. The exhaust hole 11 is a conventional design on the side wall of the pump body 1. In this application, the sealing valve 2 is integrated at the exhaust hole 11, so that the exhaust hole 11 has both the function of exhausting and outputting pressure according to the working conditions.

[0029] The internal structure and working principle of the pump body 1 are the same as those of the existing overflow electromagnetic pump, so they will not be elaborated here. Since a new pressure regulation structure is designed at the exhaust hole 11, the elastic element design can be cancelled at the overflow valve at the hydraulic end of the pump body 1, that is, the compression and recovery of the elastic element are not used to open and close the valve, so that the system pressure reaches the set value. When installing the electromagnetic pump, different output pressures can be directly selected according to the working conditions; it is also possible to choose to retain the original overflow valve structure and not cancel the elastic element design, then the required valve type can still be directly purchased. At this time, the elastic element can be used as an auxiliary pressure regulating structure. This application shows an example without canceling the elastic element design.

[0030] Refer to Figure 2 , the diameters of the three layers on the inner side of the exhaust hole 11 gradually decrease from left to right, so that a conical surface 111 is integrally formed. The sealing valve 2 includes a grip 21 and an adjusting rod 22 integrally formed at the right end of the grip 21. In order to match the conical surface 111, the adjusting rod 22 is also designed with a gradient. The right end of the adjusting rod 22 protrudes outward to form an arc surface 221. The arc surface 221 can enhance the structural strength, avoid stress concentration and wear, and extend the service life of the structure at this place.

[0031] Refer to Figure 2 , an end face accommodation groove 222 is opened on the outer periphery of the right end of the adjusting rod 22, and a rod body accommodation groove 223 is opened on the outer periphery of the middle part of the adjusting rod 22. An end face sealing ring 3 is sleeved and clamped in the end face accommodation groove 222, and a rod body sealing ring 4 is sleeved and clamped in the rod body accommodation groove 223. Both the end face sealing ring 3 and the rod body sealing ring 4 are O-rings for sealing. The outer periphery of the adjusting rod 22 is processed with threads, and the threads are arranged between the end face accommodation groove 222 and the rod body accommodation groove 223, and are arranged close to the rod body accommodation groove 223.

[0032] The grip 21 is hollow and integrally formed around the outer periphery of the adjusting rod 22. A deformation groove 224 communicating with the outside is opened inside the adjusting rod 22. When the adjusting rod 22 is threadedly connected in the exhaust hole 11, the opening of the deformation groove 224 enhances the adaptability of the adjusting rod 22 to the conical surface 111. At this time, both the end face sealing ring 3 and the rod body sealing ring 4 are pressed against the inner wall of the exhaust hole 11, so that the outlet end of the exhaust hole 11 is sealed. When the sealing valve 2 is tightened and then continuously rotated, the air in the pump body 1 is compressed and the pressure increases. The different depths of the adjusting rod 22 result in different pressures in the pump body 1.

[0033] Refer to Figure 3, during the design, through experiments, the relationship between the depth of the reverse push adjusting rod 22 entering the exhaust hole 11 and the pressure inside the pump body 1 is deduced, and multiple pressure scale lines 5 are engraved at intervals on the outer periphery of the adjusting rod 22. The pressure scale lines 5 include short lines and long lines arranged at intervals. Since the pressure required by the working conditions generally does not exceed 0.4 MPa, the units of both the long lines and the short lines are MPa.

[0034] The long lines are used to mark the integer multiple scales of one decimal place, that is, the long lines represent 0.1, 0.2, 0.3, and 0.4 respectively. The short lines are arranged between adjacent long lines. The short lines between adjacent long lines can be designed as multiple lines or one line. The short lines are used to correspondingly divide the spacing between adjacent long lines according to the pressure change. Considering the actual working condition requirements and the convenience of observation, only one short line is set between adjacent long lines. The short lines are used to mark the odd multiple scales of 0.05, that is, the short lines represent 0.05, 0.15, 0.25, 0.35 respectively. In addition, 0 is also represented by a short line.

[0035] The implementation principle of an adjustable self-sealing electromagnetic pump according to an embodiment of the present application is as follows: during the startup and stop processes of the pump group, the operator unscrews the sealing valve 2 to achieve exhaust. After the exhaust is completed, the output pressure setting that meets the working condition requirements can be quickly completed according to the visual scale, and different overflow pressure protections are achieved by using the change of the oblique interference amount.

[0036] The above are all the preferred embodiments of the present application. The protection scope of the present application is not limited by this. Therefore, all equivalent changes made according to the structure, shape, and principle of the present application should be covered within the protection scope of the present application.

Claims

1. An adjustable self-sealing electromagnetic pump, characterized in that: The invention comprises a pump body (1), one side of the pump body (1) is connected to an exhaust hole (11), the exhaust hole (11) is connected to a sealing valve (2), the sealing valve (2) comprises a handle (21), an adjusting rod (22) connected to one end of the handle (21), an end face sealing ring (3) is sleeved on the end of the adjusting rod (22) away from the handle (21); a conical surface (111) is arranged on the inner side of the exhaust hole (11) near one end of the pump body (1), the adjusting rod (22) is inserted and threadedly connected in the exhaust hole (11), the end face sealing ring (3) abuts against the inner wall of the exhaust hole (11) and seals the exhaust hole (11), and a plurality of pressure scale lines (5) are arranged at intervals on the outer periphery of the adjusting rod (22).

2. The adjustable self-sealing electromagnetic pump according to claim 1, characterized in that: A rod body sealing ring (4) is sleeved on the outer periphery of the regulating rod (22), and the rod body sealing ring (4) abuts against the inner wall of the exhaust hole (11).

3. The adjustable self-sealing electromagnetic pump according to claim 2, characterized in that: The outer periphery of the adjusting rod (22) is provided with an end surface accommodating groove (222) for the end surface sealing ring (3) to be embedded, and a rod body accommodating groove (223) for the rod body sealing ring (4) to be embedded.

4. The adjustable self-sealing electromagnetic pump according to claim 2, characterized in that: The pressure scale lines (5) include short lines and long lines; the long lines are used to mark integral multiples of a decimal place, the short lines are arranged between adjacent long lines, and the short lines are used to divide the intervals between adjacent long lines in accordance with pressure changes.

5. The adjustable self-sealing electromagnetic pump according to claim 4, characterized in that: One short line is arranged between adjacent long lines, and the short line is used to mark scales of odd multiples of 0.

05.

6. The adjustable self-sealing electromagnetic pump according to claim 2, characterized in that: The handle (21) is hollow and is arranged around the outer circumference of the adjustment rod (22); a deformation groove (224) communicating with the outside is provided inside the adjustment rod (22).

7. The adjustable self-sealing electromagnetic pump according to claim 2, characterized in that: The end surface of one end of the adjusting rod (22) facing away from the handle (21) is convex outwards and forms an arc-shaped surface (221).

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