Electromagnetic pump with pressure relief internal reflux
By designing an internal return pressure relief structure in the electromagnetic pump, the existing electromagnetic pump has solved the problems of large size, many parts, high cost and inaccurate output, and achieved a more stable and accurate fluid pumping effect.
Patent Information
- Application Number
- CN202420999021.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-09
- Publication Date
- 2024-12-17
- Estimated Expiration
- 2034-05-09
AI Technical Summary
The existing solenoid pumps are large in size, many parts, and high in cost due to external pressure relief valves or protection pipelines, and are easily leaked due to poor connection and coordination, resulting in inaccurate output results.
Design an electromagnetic pump with pressure relief return flow, by setting pressure relief holes connecting the liquid outlet hole section and the liquid inlet hole section in the pump pipe, and using the pressure relief structure to control the pressure relief hole according to the hydraulic pressure in the liquid outlet hole section. Opening and closing to realize the internal return of the fluid and pressure relief, avoiding the need for external pipes.
It achieves the effects of simple structure, low cost, high connection stability and more accurate output, avoiding leakage problems caused by external pipes.
Smart Images
Figure CN222185028U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of electromagnetic pumps, in particular to an electromagnetic pump with pressure relief and internal reflux. Background Art
[0002] An electromagnetic pump is a device that uses a magnetic field to control the movement of an iron core, thereby driving the movement of a fluid. Usually, in order to prevent excessive pressure at the pump outlet, a pressure relief structure is provided at the liquid outlet. However, the electromagnetic pump in the prior art is connected to an external pressure relief valve or protection pipeline outside the pump pipe, and an external pipeline is required to drain the depressurized water, resulting in a larger size of the electromagnetic pump, more parts, and high cost. The pressure relief valve, pump, and pipe require additional connections. If the connection is not good, leakage will occur, resulting in inaccurate output results.
[0003] Therefore, it is necessary to provide an electromagnetic pump with pressure relief internal reflux to solve the above technical problems. Utility Model Content
[0004] The utility model provides an electromagnetic pump with pressure relief internal reflux to solve the problems of the existing electromagnetic pumps, such as large size, many parts, high cost and inaccurate output results.
[0005] In order to solve the above technical problems, the technical solution of the utility model is: an electromagnetic pump with pressure relief internal reflux, which includes a coil assembly, a pump pipe, an iron core, a return spring, a liquid discharge control spring, a liquid inlet control spring, a liquid discharge rubber head, a liquid inlet rubber head and a pressure relief structure;
[0006] The pump tube is provided with a liquid inlet hole section, a pump cavity hole section, and a liquid outlet hole section, the pump cavity hole section is located between the liquid inlet hole section and the liquid outlet hole section, the liquid inlet hole section and the pump cavity hole section are connected through the liquid inlet hole, the liquid outlet hole section and the pump cavity hole section are connected through the liquid outlet hole, the iron core is slidably arranged in the pump tube, the reset spring is arranged between the iron core and the inner wall of the liquid inlet hole section, the iron core is axially penetrated, the liquid outlet rubber head cooperates with the liquid outlet control spring to unidirectionally seal the liquid outlet hole, the liquid inlet rubber head cooperates with the liquid inlet control spring to unidirectionally seal the liquid inlet hole, the liquid outlet rubber head and the liquid inlet rubber head block the two ends of the pump cavity hole section in opposite water blocking directions;
[0007] The pump pipe is provided with a pressure relief hole connecting the liquid outlet hole section and the liquid inlet hole section, and the pressure relief structure is arranged on the pressure relief hole. The pressure relief structure controls the opening and closing of the pressure relief hole according to the hydraulic pressure in the liquid outlet hole section.
[0008] In the utility model, the pressure relief hole includes a radial hole section and an axial hole section, the radial hole section is connected to the liquid outlet hole section, and the two ends of the axial hole section are respectively connected to the radial hole section and the liquid inlet hole section;
[0009] The pressure relief structure includes a pressure relief rubber head, a pressure relief spring, and a rubber plug. A connector is provided at the position of the pump tube corresponding to the radial hole section. The radial hole section passes through the connector. The rubber plug is connected to the connector. The pressure relief rubber head is located inside the connector and is provided at the intersection of the radial hole section and the axial hole section. The pressure relief spring is located between the rubber plug and the pressure relief rubber head.
[0010] Furthermore, the rubber plug is threadedly connected to the outer circumference or inner circumference of the connecting head, the pressure relief rubber head includes a main body and a flange diaphragm arranged on the circumferential side of the main body, a convex step is arranged in the connecting head, the rubber plug includes an extension portion extending in the connecting head, and the flange diaphragm is clamped between the convex step and the extension portion.
[0011] In addition, a convex column is arranged on the pressure relief rubber head, and the pressure relief spring is sleeved on the outer periphery of the convex column.
[0012] Optionally, an adjusting plug is threadedly connected to the rubber plug, and a pressure relief spring is located between the adjusting plug and the pressure relief rubber head.
[0013] In the utility model, the pump tube includes a first tube body and a second tube body, one end of the first tube body is sleeved in the second tube body, the outer periphery of the first tube body is sealed with the second tube body through a static sealing ring, the inner periphery of the first tube body is sealed with the iron core through a dynamic sealing ring, and the radial hole section and the axial hole section are both arranged on the first tube body.
[0014] Furthermore, the outer periphery of the first tube body is provided with a first concave step for accommodating the static sealing ring, the inner periphery of the first tube body is provided with a second concave step for accommodating the dynamic sealing ring, a gasket is provided between the axial end face of the first tube body and the second tube body, the gasket is used to limit the static sealing ring and the dynamic sealing ring, and the axial hole section is connected to the liquid inlet hole section through the through hole on the gasket or the gap between the gasket and the first tube body.
[0015] In the utility model, a protrusion used for squeezing the liquid outlet rubber head is provided at one end of the liquid inlet rubber head close to the liquid outlet rubber head.
[0016] In the utility model, the liquid outlet section is threadedly connected with a spring seat, the liquid outlet control spring is arranged between the spring seat and the liquid outlet rubber head, the liquid inlet control spring is arranged in the pump tube, and the two ends of the liquid inlet control spring are respectively connected to the inner wall of the pump tube and the liquid inlet rubber head.
[0017] In the utility model, one end of the iron core is a liquid inlet, the liquid inlet is provided with a chamfer, and one side of the liquid inlet rubber head is provided with a conical portion matching the chamfer of the liquid inlet.
[0018] Compared with the prior art, the utility model has the following beneficial effects: the electromagnetic pump with pressure relief internal reflux of the utility model is provided with a pressure relief hole connecting the liquid outlet hole section and the liquid inlet hole section, so that when the fluid in the liquid outlet hole section is over-pressured, the pressure relief structure can open the pressure relief hole, so that the fluid flow channel inlet hole section has a simple structure and low cost, high connection stability and sealing, and more precise output. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments. The drawings described below are only drawings corresponding to some embodiments of the utility model.
[0020] Figure 1 The utility model is a cross-sectional structural schematic diagram of an electromagnetic pump with pressure relief and internal reflux.
[0021] Figure 2 It is a partial structural cross-sectional view of the pressure relief structure of the electromagnetic pump with pressure relief internal reflux of the utility model.
[0022] Figure 3 The utility model is a schematic structural diagram of a pressure relief rubber head of an electromagnetic pump with pressure relief internal reflux.
[0023] Figure 4 It is a schematic diagram of the second implementation structure of the pressure relief structure of the electromagnetic pump with pressure relief internal reflux of the utility model.
[0024] Figure 5 It is a schematic structural diagram of a third implementation of the pressure relief structure of the electromagnetic pump with pressure relief internal reflux of the utility model. DETAILED DESCRIPTION
[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by those skilled in the art without creative work are within the scope of protection of the utility model.
[0026] Directional terms mentioned in the present invention, such as "up", "down", "front", "back", "left", "right", "inside", "outside", "side", "top" and "bottom", are only used for reference to the directions of the drawings. The directional terms used are used to illustrate and understand the present invention, and are not used to limit the present invention.
[0027] The words "first", "second" and the like in the terminology of the present invention are used for descriptive purposes only and should not be understood as indicating or implying relative importance, and should not be construed as limiting the order of precedence.
[0028] In the present invention, unless otherwise clearly specified and limited, the terms "install", "connect", "connect", "fix" and the like should be understood in a broad sense. For example, the connection can be a detachable connection or a connection of an integral structure; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.
[0029] The electromagnetic pump in the prior art is connected to a pressure relief valve or a protective pipeline outside the pump pipe, and an external pipeline is required to drain the depressurized water, resulting in a larger size of the electromagnetic pump, more parts, and high cost. The pressure relief valve, pump, and pipe are connected together, and if the connection is not good, leakage will occur, resulting in inaccurate output results.
[0030] The following is a preferred embodiment of an electromagnetic pump with pressure relief internal reflux provided by the utility model that can solve the above technical problems.
[0031] Please refer to Figure 1 and Figure 2 ,in Figure 1 It is a structural schematic diagram of a preferred embodiment of the electromagnetic pump with pressure relief and internal reflux of the utility model. Figure 2 It is a partial structural cross-sectional view of the pressure relief structure of the electromagnetic pump with pressure relief internal reflux of the utility model.
[0032] In the figures, structurally similar elements are denoted by the same reference numerals.
[0033] The utility model provides an electromagnetic pump with pressure relief internal reflux, which comprises a coil assembly 11, a pump tube 12, an iron core 13, a reset spring 14, a liquid outlet control spring 15, a liquid inlet control spring 18, a liquid outlet rubber head 16, a liquid inlet rubber head 17 and a pressure relief structure 19.
[0034] The pump tube 12 is provided with a liquid inlet hole section 125, a pump cavity hole section 127, and a liquid outlet hole section 126. The pump cavity hole section 127 is located between the liquid inlet hole section 125 and the liquid outlet hole section 126. It should be noted that the space of the pump cavity hole section 127 changes with the sliding of the iron core 13.
[0035] The liquid inlet hole section 125 and the pump cavity hole section 127 are connected through the liquid inlet hole, and the liquid outlet hole section 126 and the pump cavity hole section 127 are connected through the liquid outlet hole. The iron core 13 is slidably arranged in the pump pipe 12, and the reset spring 14 is arranged between the iron core 13 and the inner wall of the liquid inlet hole section 125. The iron core 13 is axially penetrated, and the liquid outlet rubber head 16 cooperates with the liquid outlet control spring 15 to unidirectionally seal the liquid outlet hole, and the liquid inlet rubber head 17 cooperates with the liquid inlet control spring 18 to unidirectionally seal the liquid inlet hole. The liquid inlet hole in this embodiment is a port at one end of the iron core 13, and the liquid outlet rubber head 16 and the liquid inlet rubber head 17 are blocked at both ends of the pump cavity hole section 127 in opposite water blocking directions. The iron core 13 reciprocates under the action of the electromagnetic force formed by the coil assembly 11 and the reset spring 14, so that the liquid is pumped out through the liquid inlet hole section 125, the pump cavity hole section 127, and the liquid outlet hole section 126 in sequence.
[0036] In this embodiment, the pump pipe 12 is provided with a pressure relief hole 123 connecting the liquid outlet hole section 126 and the liquid inlet hole section 125, and the pressure relief structure 19 is provided on the pressure relief hole 123. The pressure relief structure 19 controls the opening and closing of the pressure relief hole 123 according to the hydraulic pressure in the liquid outlet hole section 126. The pressure relief structure 19 can open the pressure relief hole 123, so that the fluid flow channel liquid inlet hole section 125 does not need an external pipeline to drain the pressure-relieved water, the structure is simple and the cost is low, the connection stability and sealing are high, and the output is more accurate.
[0037] Please refer to Figure 2 In this embodiment, the pressure relief hole 123 includes a radial hole section 1231 and an axial hole section 1232. The radial hole section 1231 is connected to the liquid outlet hole section 126, and the two ends of the axial hole section 1232 are respectively connected to the radial hole section 1231 and the liquid inlet hole section 125.
[0038] The pressure relief structure 19 includes a pressure relief rubber head 191, a pressure relief spring 193, and a rubber plug 192. A connector 124 is provided at the position of the pump tube 12 corresponding to the radial hole section 1231. The radial hole section 1231 penetrates the connector 124. The rubber plug 192 is connected to the connector 124. The pressure relief rubber head 191 is located in the connector 124 and is provided at the intersection of the radial hole section 1231 and the axial hole section 1232. The pressure relief spring 193 is located between the rubber plug 192 and the pressure relief rubber head 191. When the liquid outlet hole section 126 is in a normal liquid pressure state, the pressure relief spring 193 squeezes the pressure relief rubber head 191 to block the pressure relief hole 123. When the hydraulic pressure in the liquid outlet hole section 126 is too large, the pressure relief rubber head 191 will be pushed away, so that some of the liquid in the liquid outlet hole section 126 is discharged to the liquid inlet hole section 125.
[0039] In this embodiment, the rubber plug 192 can be threadedly connected to the outer periphery of the connector 124 (such as Figure 2 ) or threadedly connected to the inner periphery of the connector 124 (such as Figure 5 ).
[0040] Please refer to Figure 2 and Figure 3 The pressure relief rubber head 191 includes a main body and a flange diaphragm 1911 arranged on the circumferential side of the main body, a convex step is arranged in the connecting head 124, and the rubber plug 192 includes an extension portion 1931 extending in the connecting head 124. The flange diaphragm 1911 is clamped between the convex step and the extension portion 1931, so that the pressure relief rubber head 191 can be well isolated and sealed between the radial hole section 1231 and the rubber plug 192.
[0041] In addition, a boss 1912 is provided on the pressure relief rubber head 191, and the pressure relief spring 193 is sleeved on the outer periphery of the boss 1912, so that the elastic force of the pressure relief spring 193 acts stably on the radial hole section 1231, and the sealing is stable.
[0042] Please refer to Figure 4 Optionally, an adjusting plug 194 can be threadedly connected to the rubber plug 192, and the pressure relief spring 193 is located between the adjusting plug 194 and the pressure relief rubber head 191. By adjusting the depth of the adjusting plug 194 screwed into the rubber plug 192, the elastic force of the pressure relief spring 193 on the pressure relief rubber head 191 is adjusted, so that when the required hydraulic pressure in the liquid outlet section 126 is reached, the pressure relief rubber head 191 will automatically open.
[0043] In this embodiment, the pump tube 12 includes a first tube body 121 and a second tube body 122. One end of the first tube body 121 is sleeved in the second tube body 122. The outer periphery of the first tube body 121 is sealed with the second tube body 122 through a static sealing ring 1A, and the inner periphery of the first tube body 121 is sealed with the iron core 13 through a dynamic sealing ring 1B. The radial hole section 1231 and the axial hole section 1232 are both arranged on the first tube body 121. The split structure of the first tube body 121 and the second tube body 122 facilitates the assembly of structures such as the iron core 13 and the return spring 14.
[0044] Furthermore, the outer periphery of the first tube body 121 is provided with a first concave step for accommodating the static seal ring 1A, the inner periphery of the first tube body 121 is provided with a second concave step for accommodating the dynamic seal ring 1B, and a gasket 1C is provided between the axial end surface of the first tube body 121 and the second tube body 122, and the gasket 1C is used to limit the static seal ring 1A and the dynamic seal ring 1B
[0045] A through hole may be provided on the gasket 1C or a gap may be provided between the gasket 1C and the first tube body 121 , and the axial hole section 1232 is connected to the liquid inlet hole section 125 through the through hole on the gasket 1C or the gap between the gasket 1C and the first tube body 121 .
[0046] When the electromagnetic pump is started, it is difficult for water to enter the pump chamber hole section 127, and the liquid outlet rubber head 16 may also stick to the liquid outlet hole, and water cannot soak the liquid outlet rubber head 16. The compressed air pressure of the pump chamber hole section 127 is difficult to open the liquid outlet rubber head 16. Therefore, in this embodiment, a protrusion for squeezing the liquid outlet rubber head 16 is provided at one end of the liquid inlet rubber head 17 close to the liquid outlet rubber head 16.
[0047] In this embodiment, the liquid outlet section 126 is threadedly connected to a spring seat 151, the liquid outlet control spring 15 is arranged between the spring seat 151 and the liquid outlet rubber head 16, the liquid inlet control spring 18 is arranged in the pump tube 12, and the two ends of the liquid inlet control spring 18 are respectively connected to the inner wall of the pump tube 12 and the liquid inlet rubber head 17.
[0048] In this embodiment, one end of the iron core 13 is a liquid inlet, which is provided with a chamfer, and one side of the liquid inlet rubber head 17 is provided with a conical portion that matches the chamfer of the liquid inlet, which can stably push the liquid out of the pump.
[0049] When the electromagnetic pump with pressure relief internal reflux of this embodiment is working, the iron core 13 reciprocates under the action of the electromagnetic force formed by the coil assembly 11 and the reset spring 14, so that the liquid is pumped out through the liquid inlet hole section 125, the pump cavity hole section 127, and the liquid outlet hole section 126 in sequence. When the hydraulic pressure in the liquid outlet hole section 126 is too large, the pressure relief rubber head 191 will be pushed open, so that some of the liquid in the liquid outlet hole section 126 is discharged to the liquid inlet hole section 125, making the output more accurate. It does not require an external pipeline to drain the pressure relief water, has a simple structure and low cost, and has high connection stability and sealing.
[0050] In summary, although the present invention has been disclosed as above in terms of preferred embodiments, the above preferred embodiments are not intended to limit the present invention. A person skilled in the art may make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be based on the scope defined in the claims.
Claims
1. An electromagnetic pump with pressure relief internal reflux, characterized in that: It includes a coil assembly, a pump tube, an iron core, a return spring, a liquid discharge control spring, a liquid inlet control spring, a liquid discharge rubber head, a liquid inlet rubber head and a pressure relief structure; The pump tube is provided with a liquid inlet hole section, a pump cavity hole section, and a liquid outlet hole section, the pump cavity hole section is located between the liquid inlet hole section and the liquid outlet hole section, the liquid inlet hole section and the pump cavity hole section are connected through the liquid inlet hole, the liquid outlet hole section and the pump cavity hole section are connected through the liquid outlet hole, the iron core is slidably arranged in the pump tube, the reset spring is arranged between the iron core and the inner wall of the liquid inlet hole section, the iron core is axially penetrated, the liquid outlet rubber head cooperates with the liquid outlet control spring to unidirectionally seal the liquid outlet hole, the liquid inlet rubber head cooperates with the liquid inlet control spring to unidirectionally seal the liquid inlet hole, the liquid outlet rubber head and the liquid inlet rubber head block the two ends of the pump cavity hole section in opposite water blocking directions; The pump pipe is provided with a pressure relief hole connecting the liquid outlet hole section and the liquid inlet hole section, and the pressure relief structure is arranged on the pressure relief hole. The pressure relief structure controls the opening and closing of the pressure relief hole according to the hydraulic pressure in the liquid outlet hole section.
2. The electromagnetic pump with pressure relief internal reflux according to claim 1, characterized in that: The pressure relief hole comprises a radial hole section and an axial hole section, the radial hole section is connected to the liquid outlet hole section, and two ends of the axial hole section are respectively connected to the radial hole section and the liquid inlet hole section; The pressure relief structure includes a pressure relief rubber head, a pressure relief spring, and a rubber plug. A connector is provided at the position of the pump tube corresponding to the radial hole section. The radial hole section passes through the connector. The rubber plug is connected to the connector. The pressure relief rubber head is located inside the connector and is provided at the intersection of the radial hole section and the axial hole section. The pressure relief spring is located between the rubber plug and the pressure relief rubber head.
3. The electromagnetic pump with pressure relief internal reflux according to claim 2, characterized in that: The rubber plug is threadedly connected to the outer circumference or inner circumference of the connecting head. The pressure relief rubber head includes a main body and a flange diaphragm arranged on the circumferential side of the main body. A convex step is arranged in the connecting head. The rubber plug includes an extension portion extending in the connecting head, and the flange diaphragm is clamped between the convex step and the extension portion.
4. The electromagnetic pump with pressure relief internal reflux according to claim 2, characterized in that: The pressure relief rubber head is provided with a convex column, and the pressure relief spring is sleeved on the outer periphery of the convex column.
5. The electromagnetic pump with pressure relief internal reflux according to claim 2, characterized in that: An adjusting plug is threadedly connected to the rubber plug, and a pressure relief spring is located between the adjusting plug and the pressure relief rubber head.
6. The electromagnetic pump with pressure relief internal reflux according to claim 2, characterized in that: The pump tube includes a first tube body and a second tube body, one end of the first tube body is sleeved in the second tube body, the outer periphery of the first tube body is sealed with the second tube body through a static sealing ring, and the inner periphery of the first tube body is sealed with the iron core through a dynamic sealing ring, and the radial hole section and the axial hole section are both arranged on the first tube body.
7. The electromagnetic pump with pressure relief internal reflux according to claim 6, characterized in that: The outer periphery of the first tube body is provided with a first concave step for accommodating the static sealing ring, the inner periphery of the first tube body is provided with a second concave step for accommodating the dynamic sealing ring, a gasket is arranged between the axial end surface of the first tube body and the second tube body, the gasket is used to limit the static sealing ring and the dynamic sealing ring, and the axial hole section is connected with the liquid inlet hole section through the through hole on the gasket or the gap between the gasket and the first tube body.
8. The electromagnetic pump with pressure relief internal reflux according to claim 1, characterized in that: One end of the liquid inlet rubber head close to the liquid outlet rubber head is provided with a protrusion for squeezing the liquid outlet rubber head.
9. The electromagnetic pump with pressure relief internal reflux according to claim 1, characterized in that: The liquid outlet hole section is threadedly connected with a spring seat, the liquid outlet control spring is arranged between the spring seat and the liquid outlet rubber head, the liquid inlet control spring is arranged in the pump tube, and the two ends of the liquid inlet control spring are respectively connected to the inner wall of the pump tube and the liquid inlet rubber head.
10. The electromagnetic pump with pressure relief internal reflux according to claim 1, characterized in that: One end of the iron core is a liquid inlet, and a chamfer is arranged on the liquid inlet. One side of the liquid inlet rubber head is provided with a conical part matching with the chamfer of the liquid inlet.