Explosion-proof electromagnetic pump

Abstract

The application relates to the technical field of metering pumps, and discloses an explosion-proof electromagnetic pump which comprises a pump shell, a pump inner shell, a flange, a diaphragm, a pull rod, an iron block, an electromagnetic coil, a spring, a pump head, a rear cover and an adjusting rod. When in use, the iron block can move towards the diaphragm after the electromagnetic coil is electrified, so that the pull rod protrudes the diaphragm. After the electromagnetic coil is de-energized, the iron block can move away from the diaphragm, so that the pull rod pulls the diaphragm to be concave. Therefore, the protrusion and concave of the diaphragm can be realized by electrifying and de-energizing the electromagnetic coil, so that the pressure change of the closed space is caused. The cooperation of the two one-way valves can realize the quantitative suction and discharge of the liquid. Moreover, the distance between the adjusting rod and the iron block can be changed by rotating the adjusting rod and through the interaction between the threads. Therefore, the reciprocating movement distance of the iron block is adjusted, the deformation amount of the diaphragm is changed, and finally the liquid amount of each suction and discharge is adjusted.

Description

Technical Field

[0001] This application relates to the field of metering pump technology, and in particular to an explosion-proof electromagnetic pump. Background Technology

[0002] A permanent magnet electromagnetic metering pump, including a pump head, is disclosed in related technology (announcement number: CN116447113A). The pump head has a one-way suction valve and a discharge valve at both ends. The pump head is fixedly connected to a pump head connector, forming a pump chamber. A diaphragm is located between the pump head and the pump head connector, within the pump chamber. The pump chamber is connected to the suction valve and the discharge valve. One end of the pump head connector is connected to an electromagnetic copper coil. The electromagnetic copper coil has a pure iron core in the middle, and a strong magnet is positioned directly in front of the pure iron core. The strong magnet is connected to a connecting drive shaft, which is connected to the diaphragm. A wear-resistant sleeve is provided between the connecting drive shaft and the pump head connector.

[0003] In the process of implementing the technical solution disclosed herein, it was found that the above technical solution has at least the following problems:

[0004] A permanent magnet electromagnetic metering pump uses a pure iron core within an electromagnetic coil. The iron core, along with a strong magnet on the drive shaft, attracts like poles and repels unlike poles, causing a diaphragm to reciprocate within the pump head. This reciprocating motion results in changes in the volume and pressure within the pump head cavity. These pressure changes open and close the suction and discharge valves, achieving the metered intake and discharge of liquid. However, because the reciprocating distance of the drive shaft is constant, the deformation of the diaphragm is constant, leading to a constant volume of liquid intake and discharge per cycle. Therefore, it is impossible to adjust the volume of liquid intake and discharge each time.

[0005] It should be noted that the information disclosed in the background section above is only used to enhance the understanding of the background of this application, and therefore may include information that does not constitute prior art known to those skilled in the art. Utility Model Content

[0006] To provide a basic understanding of some aspects of the disclosed technical solutions, a brief summary is given below. This summary is not a general commentary, nor is it intended to identify key / important components or describe the scope of protection of these technical solutions, but rather serves as an introduction to the detailed explanations that follow.

[0007] This disclosure provides an explosion-proof electromagnetic pump that can adjust the amount of liquid drawn in and discharged each time.

[0008] In some technical solutions, the explosion-proof electromagnetic pump includes: a pump housing, the pump housing including a through hole penetrating the housing; a pump inner housing, installed inside the through hole, located on both sides of the through hole along the axial direction of the through hole; a flange, installed on the end face of the pump housing, abutting against either side of the pump inner housing, and distributed along the center line with the through hole; a diaphragm, installed on the end face of the flange, and distributed along the center line with the through hole; a pull rod, slidably inserted through the pump inner housing abutting against the flange, distributed along the center line with the through hole, one end of the pull rod connected to the diaphragm; and an iron block connected to the other end of the pull rod. One end comprises: an electromagnetic coil installed between the two inner pump housings and sleeved on the iron block; a spring installed along the axial direction of the pull rod between the iron block and the inner pump housing abutting the flange, the inner pump housing abutting the flange including a circular hole, the spring located within the circular hole; a pump head installed on the end face of the flange and surrounding the diaphragm; a rear cover installed on the end face of the outer pump housing and abutting the other inner pump housing; and an adjusting rod, co-centered with the through hole, passing through the rear cover and threadedly connected to the rear cover. The iron block is slidably inserted into the inner pump housing abutting the rear cover. Under the magnetic force of the electromagnetic coil, the diaphragm is protruded by the pull rod; under the elastic force of the spring, the diaphragm is concave by the pull rod.

[0009] Optionally, it also includes a plug, installed at one end of the adjusting rod near the iron block.

[0010] Optionally, it also includes a knob mounted on the end of the adjusting rod away from the iron block.

[0011] Optionally, it further includes: a guide rod, installed along the axial direction of the pull rod in the pump inner housing abutting against the flange; wherein the iron block includes a groove, and the guide rod is located inside the groove.

[0012] Optionally, it further includes: a coil bracket, installed between the two pump inner shells and sleeved on the iron block; wherein the electromagnetic coil is located inside the coil bracket.

[0013] Optionally, it also includes an explosion-proof gland, mounted on the rear cover.

[0014] Optionally, it further includes: a magnetic shielding pad, installed on the end face of the iron block and close to the pump inner shell that abuts against the flange.

[0015] Optionally, it also includes: sealing rings, respectively installed at the contact points between the pump inner shell on both sides and the flange and the rear cover.

[0016] Optionally, it further includes: a rubber ring, fitted onto the tie rod and installed between the flange and the pump inner housing abutting against the flange.

[0017] The explosion-proof electromagnetic pump provided by this disclosure can achieve the following technical effects:

[0018] This disclosure provides an explosion-proof electromagnetic pump, comprising a pump housing, an inner pump housing, a flange, a diaphragm, a pull rod, an iron lump, an electromagnetic coil, a spring, a pump head, a rear cover, and an adjusting rod. The pump housing includes a through-hole that penetrates the housing, accommodating related components. The inner pump housing is installed inside the through-hole, located on both sides of the through-hole along its axial direction. This design, with the inner pump housing on both sides of the through-hole, facilitates the installation of the electromagnetic coil and other components. The flange is installed on the end face of the pump housing, abutting against either side of the inner pump housing, and is aligned with the centerline of the through-hole, supporting the installation of the diaphragm and pump head. The diaphragm is installed on the end face of the flange, aligned with the centerline of the through-hole, and deforms under the drive of a driving component, thereby achieving liquid transport. The pull rod slidably passes through the inner pump housing abutting against the flange, aligned with the centerline of the through-hole, with one end connected to the diaphragm, driving the diaphragm to move and deform. The iron lump is connected to the other end of the pull rod, driving the pull rod to move. An electromagnetic coil is installed between the two pump inner shells and fitted onto an iron block to generate magnetic force. A spring, along the axial direction of the pull rod, is installed between the iron block and the pump inner shell abutting the flange to provide elastic force. The pump inner shell abutting the flange includes a circular hole, within which the spring is located to reduce the lateral space occupied by the device. The pump head is mounted on the end face of the flange and surrounds the diaphragm. The pump head includes two threaded holes and a fluid delivery channel communicating with the two threaded holes, both of which are connected to the sealed space formed by the pump head, flange, and diaphragm. The two threaded holes are respectively used to connect to one-way valves to control the direction of fluid flow. The rear cover is mounted on the end face of the pump outer shell and abuts against the other pump inner shell; the rear cover and flange together provide lateral fixation for both pump inner shells. An adjusting rod, coaxial with the through hole, passes through the rear cover and is threadedly connected to it. The iron block is slidably inserted into the pump inner shell abutting the rear cover so that it can abut against the adjusting rod. In this process, the diaphragm is pushed outward by the pull rod under the magnetic force of the electromagnetic coil, and pulled inward by the pull rod under the elastic force of the spring.

[0019] In operation, when the electromagnetic coil is energized, it generates a magnetic force that overcomes the elastic force of the spring. This causes the iron lump to move closer to the diaphragm, causing the pull rod to bulge the diaphragm. When the electromagnetic coil is de-energized, the magnetic force disappears, and the iron lump moves away from the diaphragm under the spring force, causing the pull rod to concave the diaphragm. Therefore, by switching the electromagnetic coil on and off, the diaphragm can be raised and lowered, resulting in pressure changes in the sealed space. This, combined with the two one-way valves, allows for the metered intake and discharge of liquid. Furthermore, rotating the adjusting rod, through the interaction of the threads, changes the distance between it and the iron lump. This adjusts the reciprocating distance of the iron lump, thereby changing the deformation of the diaphragm and ultimately regulating the amount of liquid drawn in and discharged each time.

[0020] The above general description and the description below are exemplary and illustrative only and are not intended to limit this application. Attached Figure Description

[0021] One or more embodiments are illustrated by way of example with reference to the accompanying drawings. These illustrations and drawings do not constitute a limitation on the embodiments. Elements having the same reference numerals in the drawings are shown as similar elements. The drawings are not to be scaled. And wherein:

[0022] Figure 1 This is a schematic diagram of the main structure of an explosion-proof electromagnetic pump provided in an embodiment of this disclosure;

[0023] Figure 2 yes Figure 1 Schematic diagram of the cross-sectional structure at point AA;

[0024] Figure 3 yes Figure 2 Enlarged structural diagram at point B;

[0025] Figure 4 yes Figure 2 Enlarged structural diagram at point C;

[0026] Figure 5 yes Figure 2 A magnified structural diagram at point D.

[0027] Figure label:

[0028] 1. Pump outer casing; 2. Pump inner casing; 3. Flange; 4. Diaphragm; 5. Tie rod; 6. Iron block; 7. Electromagnetic coil; 8. Spring; 9. Pump head; 10. Rear cover; 11. Adjusting rod; 12. Plug; 13. Knob; 14. Guide rod; 15. Coil bracket; 16. Explosion-proof gland; 17. Magnetic shielding pad; 18. Sealing ring. Detailed Implementation

[0029] To provide a more detailed understanding of the features and technical content of the embodiments of this disclosure, the implementation of the embodiments of this disclosure will be described in detail below with reference to the accompanying drawings. The accompanying drawings are for illustrative purposes only and are not intended to limit the embodiments of this disclosure. In the following technical description, for ease of explanation, several details are used to provide a full understanding of the disclosed embodiments. However, one or more embodiments may still be implemented without these details. In other cases, well-known structures and devices may be simplified in their depiction to simplify the drawings.

[0030] The terms "first," "second," etc., used in the specification, claims, and accompanying drawings of this disclosure are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate for the embodiments of this disclosure described herein. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion.

[0031] In this disclosure, the terms "upper," "lower," "inner," "middle," "outer," "front," and "rear," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. These terms are primarily for better describing the embodiments of this disclosure and their implementations, and are not intended to limit the indicated devices, elements, or components to having a specific orientation, or to require them to be constructed and operated in a specific orientation. Furthermore, some of the aforementioned terms may be used to indicate other meanings besides orientation or positional relationship; for example, the term "upper" may in some cases indicate a dependency or connection relationship. Those skilled in the art can understand the specific meaning of these terms in this disclosure according to the specific circumstances.

[0032] Furthermore, the terms "set up," "connect," and "fix" should be interpreted broadly. For example, "connection" can be a fixed connection, a detachable connection, or 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, or it can be an internal connection between two devices, components, or parts. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this disclosure according to the specific circumstances.

[0033] Unless otherwise stated, the term "multiple" means two or more.

[0034] In this embodiment of the disclosure, the character " / " indicates that the objects before and after it are in an "or" relationship. For example, A / B means: A or B.

[0035] The term "and / or" describes an association between objects, indicating that three relationships can exist. For example, A and / or B means: A or B, or A and B.

[0036] It should be noted that, unless otherwise specified, the embodiments and features described in the present disclosure can be combined with each other.

[0037] Combination Figures 1 to 5 As shown, this embodiment of the present disclosure provides an explosion-proof electromagnetic pump, including a pump housing 1, a pump inner housing 2, a flange 3, a diaphragm 4, a pull rod 5, an iron block 6, an electromagnetic coil 7, a spring 8, a pump head 9, a rear cover 10, and an adjusting rod 11. The pump housing 1 includes a through hole penetrating its housing, used to accommodate related components. The pump inner housing 2 is installed inside the through hole, located on both sides of the through hole along its axial direction. This design, with the pump inner housing 2 located on both sides of the through hole, facilitates the installation of the electromagnetic coil 7, etc. The flange 3 is installed on the end face of the pump housing 1, abutting against either side of the pump inner housing 2, and is distributed along the same centerline as the through hole, used to support and install the diaphragm 4 and the pump head 9, etc. The diaphragm 4 is installed on the end face of the flange 3, and is distributed along the same centerline as the through hole. The diaphragm 4 can deform under the drive of the driving component, thereby realizing the delivery of liquid. A pull rod 5 is slidably inserted into the pump inner shell 2, which abuts against the flange 3, and is distributed along the centerline with the through hole. One end of the pull rod 5 is connected to the diaphragm 4, which drives the diaphragm 4 to move and deform. An iron block 6 is connected to the other end of the pull rod 5, which drives the pull rod 5 to move. An electromagnetic coil 7 is installed between the two pump inner shells 2 and sleeved on the iron block 6, which generates magnetic force. A spring 8 is installed along the axial direction of the pull rod 5 between the iron block 6 and the pump inner shell 2 abutting against the flange 3, which provides elastic force. The pump inner shell 2 abutting against the flange 3 includes a circular hole, and the spring 8 is located in the circular hole to reduce the lateral space occupied by the device. A pump head 9 is installed on the end face of the flange 3 and surrounds the diaphragm 4. The pump head 9 includes two threaded holes and a liquid delivery channel communicating with the two threaded holes. Both liquid delivery channels are connected to the sealed space formed by the pump head 9, the flange 3, and the diaphragm 4. The two threaded holes are respectively used to connect to a one-way valve to control the direction of liquid flow. The rear cover 10 is installed on the end face of the pump housing 1 and abuts against the pump inner housing 2 on the other side. The rear cover 10 and the flange 3 together provide lateral fixation for the pump inner housings 2 on both sides. The adjusting rod 11 is distributed along the center line with the through hole, passes through the rear cover 10, and is threadedly connected to the rear cover 10. The iron lump 6 is slidably inserted into the pump inner housing 2 that abuts against the rear cover 10, so that the iron lump 6 can abut against the adjusting rod 11. Under the magnetic force of the electromagnetic coil 7, the diaphragm 4 is protruded by the pull rod 5, and under the elastic force of the spring 8, the diaphragm 4 is pulled concave by the pull rod 5.

[0038] This embodiment of the explosion-proof electromagnetic pump, when in use, generates a magnetic force when the electromagnetic coil 7 is energized, overcoming the elastic force of the spring 8. At this time, the iron block 6 moves closer to the diaphragm 4, causing the pull rod 5 to bulge the diaphragm 4. When the electromagnetic coil 7 is de-energized, the magnetic force disappears, and the iron block 6 moves away from the diaphragm 4 under the elastic force of the spring 8, causing the pull rod 5 to concave the diaphragm 4. Therefore, by switching the electromagnetic coil 7 on and off, the bulging and concavation of the diaphragm 4 can be achieved, thereby causing a change in the pressure of the confined space. Then, in conjunction with the two one-way valves, quantitative intake and discharge of liquid can be achieved. Furthermore, rotating the adjusting rod, through the interaction between the threads, changes the distance between it and the iron block 6. This adjusts the reciprocating distance of the iron block 6, thereby changing the deformation of the diaphragm 4, and ultimately regulating the amount of liquid intake and discharge each time.

[0039] Optionally, combined Figure 2 As shown, it also includes a plug 12. The plug 12 is installed at one end of the adjusting rod 11 near the iron block 6.

[0040] In this embodiment, a plug 12 is also included, which is installed on the end of the adjusting rod 11 near the iron block 6. The plug 12 is used to abut against the iron block 6, increasing the contact area with the iron block 6 and thus reducing the pressure generated during the collision.

[0041] Optionally, combined Figure 2 As shown, it also includes a knob 13. The knob 13 is mounted on the end of the adjusting rod 11 away from the iron block 6.

[0042] In this embodiment, a knob 13 is also included, mounted on the end of the adjusting rod 11 away from the iron block 6. The knob 13 is for gripping so as to manually drive the adjusting rod 11 to rotate, thereby facilitating manual adjustment of the amount of liquid inhaled and exhaled each time.

[0043] Optionally, combined Figure 2 and Figure 5 As shown, it also includes a guide rod 14. The guide rod 14 is installed in the pump inner shell 2, which abuts against the flange 3, along the axial direction of the tie rod 5. The iron block 6 includes a groove, and the guide rod 14 is located inside the groove.

[0044] In this embodiment, a guide rod 14 is also included, which is mounted along the axial direction of the tie rod 5 to the pump inner housing 2 abutting against the flange 3. The guide rod 14 serves as a guide and support, allowing the iron block 6 to move only laterally. Ultimately, this allows the spring 8 to be compressed and extended only, while allowing the diaphragm 4 to be pulled concave and protruded only.

[0045] Optionally, combined Figure 2 and Figure 3As shown, it also includes a coil support 15. The coil support 15 is installed between the two inner pump housings 2 and is fitted onto the iron block 6. The electromagnetic coil 7 is located inside the coil support 15.

[0046] In this embodiment, a coil bracket 15 is further included, which is installed between the two inner pump housings 2 and sleeved on the iron block 6. The coil bracket 15 is used to support and install the electromagnetic coil 7, so as to facilitate the installation of the electromagnetic coil 7 between the two inner pump housings 2.

[0047] Optionally, combined Figure 2 As shown, it also includes an explosion-proof gland 16. The explosion-proof gland 16 is mounted on the rear cover 10.

[0048] In this embodiment, an explosion-proof cable gland 16 is also included, which is installed on the rear cover 10. The explosion-proof cable gland 16 is used to secure, prevent explosions, waterproof and seal the cable, thus protecting both ends of the cable inlet.

[0049] Optionally, combined Figure 2 and Figure 3 As shown, it also includes a magnetic shielding pad 17. The magnetic shielding pad 17 is installed on the end face of the iron block 6 and close to the pump inner shell 2 that abuts against the flange 3.

[0050] In this embodiment, a magnetic shielding pad 17 is also included, which is installed on the end face of the iron block 6 and close to the pump inner shell 2 that abuts against the flange 3. In a magnetic field, electromagnetic signals are easily absorbed and attenuated by metal, wasting energy. Applying a magnetic shielding pad can effectively isolate the metal object from the contact with the electromagnetic signal, reduce the attenuation of the electromagnetic signal, and ultimately play a role in blocking magnetism.

[0051] Optionally, combined Figure 2 and Figure 5 As shown, it also includes a sealing ring 18. The sealing ring 18 is installed at the contact points between the pump inner shell 2 on both sides and the flange 3 and the rear cover 10.

[0052] In this embodiment, a sealing ring 18 is further included, which is installed at the contact points between the pump inner shell 2 on both sides and the flange 3 and the rear cover 10. The sealing ring 18 serves to seal and prevent leakage at the contact points between the pump inner shell 2 on both sides and the flange 3 and the rear cover 10.

[0053] Optionally, combined Figure 2 As shown, it also includes a rubber ring 19. The rubber ring 19 is fitted onto the tie rod 5 and installed between the flange 3 and the pump inner shell 2 that abuts against the flange 3.

[0054] In this embodiment, a rubber ring 19 is also included, which is fitted onto the tie rod 5 and installed between the flange 3 and the pump inner housing 2 abutting against the flange 3. The rubber ring 19 also serves as a seal to prevent leakage.

[0055] The foregoing description and accompanying drawings have fully illustrated embodiments of this disclosure to enable those skilled in the art to practice them. Other embodiments may include structural and other changes. The embodiments represent only possible variations. Individual components and functions are optional unless explicitly required, and the order of operation may vary. Parts and features of some embodiments may be included or substituted for parts and features of other embodiments. Embodiments of this disclosure are not limited to the structures described above and shown in the accompanying drawings, and various modifications and changes may be made without departing from its scope. The scope of this disclosure is limited only by the appended claims.

Claims

1. An explosion-proof electromagnetic pump, characterized in that, include: A pump housing, the pump housing including a through-hole extending through its housing; The pump inner shell is installed inside the through hole and is located on both sides of the through hole along the axial direction of the through hole; A flange is installed on the end face of the pump housing, abutting against the pump inner housing on either side, and is distributed along the same center line as the through hole; A diaphragm is installed on the end face of the flange and is distributed along the same center line as the through hole; A pull rod is slidably inserted through the pump inner shell that abuts against the flange, and is distributed along the same center line as the through hole; one end of the pull rod is connected to the diaphragm. The iron lump is connected to the other end of the pull rod; An electromagnetic coil is installed between the inner shells of the pump on both sides and is sleeved on the iron block; A spring is installed along the axial direction of the pull rod between the iron block and the pump inner shell that abuts against the flange. The pump inner shell that abuts against the flange includes a circular hole, and the spring is located in the circular hole. A pump head is mounted on the end face of the flange and surrounds the diaphragm; The rear cover is installed on the end face of the pump housing and abuts against the pump inner housing on the other side; The adjusting rod is distributed along the same center line as the through hole, passes through the rear cover, and is threadedly connected to the rear cover. The iron lump is slidably inserted into the pump inner shell that abuts against the rear cover. Specifically, under the magnetic force of the electromagnetic coil, the diaphragm is protruded by the pull rod, and under the elastic force of the spring, the diaphragm is pulled concave by the pull rod.

2. The explosion-proof electromagnetic pump according to claim 1, characterized in that, Also includes: A plug is installed at one end of the adjusting rod near the iron block.

3. The explosion-proof electromagnetic pump according to claim 1, characterized in that, Also includes: A knob is installed at the end of the adjusting rod away from the iron block.

4. The explosion-proof electromagnetic pump according to claim 1, characterized in that, Also includes: A guide rod is installed in the pump inner casing, which abuts against the flange, along the axial direction of the pull rod. The iron lump includes a groove, and the guide rod is located inside the groove.

5. The explosion-proof electromagnetic pump according to claim 1, characterized in that, Also includes: A coil bracket is installed between the inner shells of the pump on both sides and is fitted onto the iron block; The electromagnetic coil is located inside the coil support.

6. An explosion-proof electromagnetic pump according to any one of claims 1 to 5, characterized in that, Also includes: An explosion-proof gland is installed on the rear cover.

7. An explosion-proof electromagnetic pump according to any one of claims 1 to 5, characterized in that, Also includes: A magnetic shielding pad is installed on the end face of the iron block and close to the pump inner shell that abuts against the flange.

8. An explosion-proof electromagnetic pump according to any one of claims 1 to 5, characterized in that, Also includes: Sealing rings are respectively installed at the contact points between the pump inner shell on both sides and the flange and the rear cover.

9. An explosion-proof electromagnetic pump according to any one of claims 1 to 5, characterized in that, Also includes: A rubber ring is fitted onto the tie rod and installed between the flange and the pump inner housing that abuts against the flange.

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