Electromagnet structure for electromagnetic pilot valve and electromagnetic pilot valve

Abstract

The utility model relates to solenoid valve technical field especially relates to a solenoid structure and solenoid pilot valve for solenoid pilot valve, solenoid structure includes: casing, is made by non -metal material injection molding, iron stand subassembly, including magnetic conducting cylinder and guide cylinder, armature subassembly, embed in iron stand subassembly, armature subassembly is provided with the top rod, the both ends of top rod protrude casing, manual operation subassembly is used for pressing top rod, electric control subassembly is used for the frequency and voltage of regulation and control input current, wherein, casing is provided with the first accommodating chamber of opening located its bottom surface and the second accommodating chamber of opening located its side, manual operation subassembly installs in the top surface of casing, iron stand subassembly embeds in first accommodating chamber, electric control subassembly embeds in second accommodating chamber. In the utility model, the accommodating chamber for installing electric control subassembly is arranged in the side of casing, can improve the planeness of casing end surface, improve the sealing property of solenoid pilot valve.

Description

Technical Field

[0001] This utility model relates to the field of electromagnetic valve technology, and in particular to an electromagnet structure for an electromagnetic pilot valve and an electromagnetic pilot valve. Background Technology

[0002] Mining electromagnetic pilot valves are in high demand in fully mechanized coal mining faces, where the working environment is characterized by high levels of coal dust and moisture. These valves are primarily installed on the electro-hydraulic directional valves in the fully mechanized mining face to control the movement of the support cylinders, thereby achieving the overall movement of the support. Fully mechanized coal mining faces are generally classified into thin, medium-thick, and thick coal seams based on coal seam thickness. Thin coal seams, in particular, have very limited space. During maintenance of the electro-hydraulic control system, workers must bend over or crawl into the working face to perform maintenance operations.

[0003] An electromagnet structure typically includes a housing, a frame assembly, and an electronic control assembly. Previously, these components were all made of metal, resulting in a relatively heavy overall weight. Furthermore, the frame assembly and housing were assembled with a tight fit, requiring high precision machining of each part, leading to manufacturing difficulties and higher operating and maintenance costs. To address these issues, some manufacturers have begun using non-metallic materials to fabricate the housing of electromagnet structures, thereby reducing weight and manufacturing costs to some extent.

[0004] However, because non-metallic materials have lower hardness and toughness than conventional metallic materials, and because non-metallic materials have lower processing precision during injection molding, they are prone to poor flatness at the connection points, which reduces sealing performance. Utility Model Content

[0005] This invention aims to solve the technical problems existing in related technologies. Therefore, this invention proposes an electromagnet structure and an electromagnetic pilot valve for use in electromagnetic pilot valves, to achieve the goal of reducing weight and manufacturing and usage costs while maintaining good sealing performance.

[0006] In a first aspect, this utility model provides an electromagnet structure for an electromagnetic pilot valve, comprising: The casing is injection molded from non-metallic materials; The iron frame assembly includes a magnetic cylinder and a guide cylinder; An armature assembly is embedded in the iron frame assembly, and the armature assembly is provided with a push rod, the two ends of which protrude from the housing; A manual operating component for pressing the top rod; Electronic control components are used to regulate circuit input characteristics and provide safety protection. The housing is provided with a first receiving cavity with an opening on its bottom surface and a second receiving cavity with an opening on its side surface; The manual operation component is mounted on the top surface of the housing, the iron frame component is embedded in the first receiving cavity, and the electronic control component is embedded in the second receiving cavity.

[0007] According to the present invention, an electromagnet structure for an electromagnetic pilot valve is provided, wherein the housing includes two first receiving cavities and one second receiving cavity arranged sequentially in the length direction of the housing; The first receiving cavity is configured as a cylindrical space extending along the height direction of the housing, and the second receiving cavity is configured as a cylindrical space extending along the length direction of the housing.

[0008] According to the present invention, an electromagnet structure for an electromagnetic pilot valve is provided, wherein the housing is provided with a first lead hole and a second lead hole, the first lead hole is located on the common side wall of two adjacent first receiving cavities, and the second lead hole is located on the common side wall of the first receiving cavity and the second receiving cavity. The side wall of the magnetic cylinder is provided with two third lead holes, which can be aligned with the first lead hole and the second lead hole respectively, so as to connect the two first receiving cavities with the second receiving cavity.

[0009] According to the present invention, an electromagnet structure for an electromagnetic pilot valve is provided, wherein the housing is provided with a connecting channel parallel to the first receiving cavity, the connecting channel extending from the top surface of the housing to the bottom surface of the housing, and six connecting channels are symmetrically arranged on the outside of the two first receiving cavities and distributed in two rows and three columns.

[0010] According to the present invention, an electromagnet structure for an electromagnetic pilot valve is provided, wherein the housing is provided with a countersunk groove, the groove opening of which is located on the top surface of the housing, and a nut is embedded in the countersunk groove for installing the manual operation component.

[0011] According to the present invention, an electromagnet structure for an electromagnetic pilot valve is provided, wherein the bottom surface of the housing is provided with a first sealing groove, and the first sealing groove surrounds the outer periphery of the openings of the two first receiving cavities.

[0012] According to the present invention, an electromagnet structure for an electromagnetic pilot valve is provided, wherein the electronic control component includes a socket, the top surface of the second receiving cavity is provided with a mounting hole, one end of the socket is embedded in the mounting hole, and the top surface of the second receiving cavity is lower than the top surface of the first receiving cavity, so as to make the socket lower than the manual operation component to avoid the socket being hit.

[0013] According to the present invention, an electromagnet structure for an electromagnetic pilot valve is provided, wherein the socket includes a second sealing groove surrounding its outer peripheral surface, the second sealing groove being embedded in the mounting hole.

[0014] According to the present invention, an electromagnet structure for an electromagnetic pilot valve is provided, wherein the electronic control component includes a circuit board, and the circuit board is mounted in the second receiving cavity.

[0015] Secondly, this utility model provides an electromagnetic pilot valve, which adopts the electromagnet structure described in any one of the above, and further includes a pilot valve installed on the bottom surface of the housing.

[0016] The above-mentioned one or more technical solutions of this utility model have at least one of the following technical effects: In this utility model, the receiving cavity for installing the electronic control components is set on one side of the housing, which can improve the flatness of the housing end face, reduce the gap between the housing and the pilot valve and the manual operation component, and by setting a connecting channel that runs from the top surface of the housing to the bottom surface of the housing, the clamping force can be distributed to the entire housing, preventing the housing from warping and deforming, and keeping the electromagnetic pilot valve in good sealing condition.

[0017] In addition to the technical problems solved by this utility model, the technical features of the technical solutions constituted, and the advantages brought about by these technical features as described above, other technical features of this utility model and the advantages brought about by these technical features will be further explained in conjunction with the accompanying drawings, or can be learned through the practice of this utility model. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of this utility model or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0019] Figure 1 A three-dimensional schematic diagram of an electromagnetic pilot valve provided for an embodiment of this utility model.

[0020] Figure 2 This is a structural diagram showing a partial cross-section of the electromagnet structure, provided for an embodiment of this utility model.

[0021] Figure 3 This is another structural diagram showing a partial cross-section of the electromagnet structure, provided for an embodiment of this utility model.

[0022] Figure 4 A longitudinal sectional view of the housing and iron frame assembly provided in an embodiment of this utility model.

[0023] Figure 5 An isometric view of the housing provided in an embodiment of this utility model.

[0024] Figure 6 Another isometric view of the housing provided in an embodiment of this utility model.

[0025] Figure 7 A longitudinal sectional view of the iron frame assembly provided in an embodiment of this utility model.

[0026] Figure label: 100. Electromagnet structure; 110. Housing; 111. First receiving cavity; 112. Second receiving cavity; 113. Mounting hole; 114. First lead hole; 115. Connecting channel; 116. Countersunk groove; 117. First sealing groove; 118. Second lead hole; 120. Iron frame assembly; 121. Magnetic guide cylinder; 122. Third lead hole; 123. Guide cylinder; 124. Top rod; 130. Manual operation assembly; 140. Electrical control assembly; 141. Socket; 142. Second sealing groove; 143. Circuit board; 144. Nameplate; 200. Pilot valve. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of this utility model clearer, the technical solutions of this utility model will be clearly described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, not all embodiments. Based on the embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this utility model.

[0028] In an embodiment of this utility model, an electromagnet structure 100 for an electromagnetic pilot valve 200 is described.

[0029] like Figures 1 to 7 As shown, the electromagnetic pilot valve 200 includes an electromagnet structure 100 and a pilot valve 200. The pilot valve 200 is mounted on the bottom surface of the electromagnet structure 100. The electromagnet structure 100 and the pilot valve 200 are fixed together by screws.

[0030] The electromagnet structure 100 mainly includes a housing 110, an iron frame assembly 120, an armature assembly, a manual operation assembly 130, and an electronic control assembly 140.

[0031] The housing 110 is injection molded from a non-metallic material. The iron frame assembly 120 includes a magnetic guide cylinder 121 and a guide cylinder 123. The armature assembly is installed inside the iron frame assembly 120. The iron frame assembly 120 and the armature assembly together constitute an electromechanical converter used to convert electric current into a magnetic field with continuously changing poles. The push rod in the armature assembly can continuously reciprocate under the driving force of this magnetic field, thereby controlling the movement of the valve core in the pilot valve 200 to change the on / off state.

[0032] Specifically, the armature assembly includes pole shoes, a coil, an armature, and a push rod 124. The coil is embedded in the magnetic guide cylinder 121. The guide cylinder 123 and the pole shoes are embedded in the coil along the axial direction of the magnetic guide cylinder 121. The armature is embedded in the guide cylinder 123. The push rod 124 is disposed along the central axis, passing through the armature and the pole shoes. Furthermore, both ends of the push rod protrude from the housing.

[0033] The manual operation component 130 is installed on the top surface of the housing 110. Furthermore, the manual operation component 130 covers the end of the push rod 124 that protrudes from the housing 110, and the push rod 124 can be manually extended by directly pressing the push rod 124 through the manual operation component 130.

[0034] The electronic control assembly 140 is used to introduce external power supply to the coil and regulate the frequency and voltage of the input current to achieve electronic control operation of the solenoid pilot valve 200. Specifically, the electronic control assembly 140 includes a socket 141, a sealing ring, a fastening nut, a circuit board 143, and a nameplate 144.

[0035] Please see Figures 3 to 5 The housing 110 is provided with a first receiving cavity 111 and a second receiving cavity 112. The opening of the first receiving cavity 111 is located on the bottom surface of the housing 110. The opening of the second receiving cavity 112 is located on the side surface of the housing 110. A nameplate 144 covers the opening of the second receiving cavity 112 to seal the second receiving cavity 112.

[0036] Furthermore, the housing 110 includes two first receiving cavities 111 and a second receiving cavity 112 arranged sequentially in the length direction of the housing 110.

[0037] The first receiving cavity 111 is configured as a cylindrical space extending along the height direction of the housing 110. The second receiving cavity 112 is configured as a cylindrical space extending along the length direction of the housing 110.

[0038] The manual operation component 130 and the iron frame component 120 are embedded in the first receiving cavity 111. The electronic control component 140 is embedded in the second receiving cavity 112.

[0039] Specifically, the iron frame assembly 120 is embedded in the cavity of the first receiving cavity 111. The manual operation assembly 130 covers the bottom of the first receiving cavity 111 from the outside of the housing 110, that is, the manual operation assembly 130 is mounted on the top surface of the housing 110. Furthermore, the manual operation assembly 130 and the iron frame assembly 120 coincide on the same central axis.

[0040] Preferably, the manual operation component 130 is injection molded from a non-metallic material.

[0041] In this embodiment, the cavity for installing the electronic control components is located on one side of the housing, which can improve the flatness of the housing end face and reduce the gap between the housing and the pilot valve and the manual operation components. By setting a connecting channel that runs from the top surface of the housing to the bottom surface of the housing, the clamping force can be distributed to the entire housing, preventing the housing from warping and deforming, and ensuring that the electromagnetic pilot valve maintains good sealing performance.

[0042] Based on the above implementation, in another embodiment of the present invention, an electromagnet structure 100 for an electromagnetic pilot valve 200 is introduced.

[0043] like Figure 3 and Figure 4 As shown, in order to improve the sealing performance, a lead hole is opened inside the electromagnet structure 100, which passes through the first receiving cavity 111 and the second receiving cavity 112, for threading the wires connecting the coil and the circuit board 143.

[0044] Specifically, the housing 110 is provided with a first lead hole 114 and a second lead hole 118.

[0045] The first lead hole 114 is located on the common sidewall of two adjacent first receiving cavities 111. The second lead hole 118 is located on the common sidewall of the first receiving cavity 111 and the second receiving cavity 112.

[0046] The side wall of the magnetic cylinder 121 is provided with two third lead holes 122, which can be aligned with the first lead hole 114 and the second lead hole 118 respectively, so as to connect the two first receiving cavities 111 and the second receiving cavity 112.

[0047] To reduce manufacturing difficulty, the central axes of the first lead hole 114 and the second lead hole 118 are aligned and located on the plane of symmetry of the housing 110. Correspondingly, two third lead holes 122 are symmetrically arranged on the side wall of the magnetic cylinder 121 along the radial direction of the magnetic cylinder 121.

[0048] Based on the above implementation, in another embodiment of the present invention, an electromagnet structure 100 for an electromagnetic pilot valve 200 is introduced.

[0049] In order to solve the problems of poor surface flatness and easy warping and deformation of the housing 110 in the one-piece injection molding process, the housing 110 is provided with a connecting channel 115 for screws to pass through.

[0050] The connecting channel 115 is parallel to the first receiving cavity 111. The connecting channel 115 extends from the top surface of the housing 110 to the bottom surface of the housing 110.

[0051] Furthermore, the six connecting channels 115 are symmetrically arranged on the outer sides of the two first receiving cavities 111 and distributed in two rows and three columns. Thus, the screw can evenly and lowly distribute the clamping force onto the housing 110, so that the contact surface of the housing 110 and the pilot valve 200 are completely in contact.

[0052] To facilitate the fixing of the manual operation component 130 to the housing 110, the housing 110 is also provided with a countersunk groove 116. The opening of the countersunk groove 116 is located on the top surface of the housing 110. A nut is embedded in the countersunk groove 116 for installing the manual operation component 130.

[0053] Based on the above implementation, in another embodiment of the present invention, an electromagnet structure 100 for an electromagnetic pilot valve 200 is introduced.

[0054] To further improve the sealing between the contact surfaces of the electromagnet structure 100 and the pilot valve 200, a first sealing groove 117 is provided on the bottom surface of the housing 110. The first sealing groove 117 surrounds the outer periphery of the openings of the two first receiving cavities 111.

[0055] An O-ring is embedded in the first sealing groove 117, so that when the housing 110 is connected to the pilot valve 200, the O-ring is squeezed and undergoes elastic deformation, which can better seal the gap between the housing 110 and the pilot valve 200.

[0056] Furthermore, the electronic control assembly 140 includes a socket 141. The top surface of the second receiving cavity 112 is provided with a mounting hole 113.

[0057] One end of the socket 141 is inserted into the mounting hole 113. The top surface of the second receiving cavity 112 is lower than the top surface of the first receiving cavity 111, so as to keep the socket 141 lower than the manual operation component 130 to avoid the socket 141 being hit.

[0058] The socket 141 includes a second sealing groove 142 surrounding its outer circumference. The second sealing groove 142 is fitted into the mounting hole 113. When an O-ring is fitted into the second sealing groove 142, the O-ring is compressed and undergoes elastic deformation when the socket 141 is inserted into the mounting hole 113, thereby better sealing the gap between the socket 141 and the mounting hole 113.

[0059] Furthermore, the electronic control assembly 140 includes a circuit board 143. The circuit board 143 is mounted in the second receiving cavity 112.

[0060] In another embodiment of this utility model, an electromagnetic pilot valve 200 is introduced. The electromagnetic pilot valve 200 adopts the electromagnet structure 100 described in any of the above embodiments.

[0061] In the description of the embodiments of this utility model, it should be noted that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the embodiments of this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the embodiments of this utility model. In addition, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0062] In the description of the embodiments of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this utility model based on the specific circumstances.

[0063] In this embodiment of the utility model, unless otherwise explicitly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0064] In the description of this specification, the references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms are not limited to the same embodiments or examples. Moreover, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples. Furthermore, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples described in this specification, as well as the features of different embodiments or examples.

[0065] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and not to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An electromagnet structure for an electromagnetic pilot valve, characterized in that, include: The housing (110) is injection molded from a non-metallic material; The iron frame assembly (120) includes a magnetic cylinder (121) and a guide cylinder (123). An armature assembly is embedded in the iron frame assembly (120). The armature assembly is provided with a push rod (124), and the two ends of the push rod (124) protrude from the housing (110). Manual operation component (130) for pressing the top rod (124); Electronic control component (140) is used to regulate circuit input characteristics and provide safety protection; The housing (110) is provided with a first receiving cavity (111) with an opening on its bottom surface and a second receiving cavity (112) with an opening on its side surface. The manual operation component (130) is installed on the top surface of the housing (110), the iron frame component (120) is embedded in the first receiving cavity (111), and the electronic control component (140) is embedded in the second receiving cavity (112).

2. The electromagnet structure for an electromagnetic pilot valve according to claim 1, characterized in that, The housing (110) includes two first receiving cavities (111) and a second receiving cavity (112) arranged sequentially along the length of the housing (110). The first receiving cavity (111) is configured as a cylindrical space extending along the height direction of the housing (110), and the second receiving cavity (112) is configured as a cylindrical space extending along the length direction of the housing (110).

3. The electromagnet structure for an electromagnetic pilot valve according to claim 2, characterized in that, The housing (110) is provided with a first lead hole (114) and a second lead hole (118). The first lead hole (114) is located on the common side wall of two adjacent first receiving cavities (111), and the second lead hole (118) is located on the common side wall of the first receiving cavity (111) and the second receiving cavity (112). The side wall of the magnetic cylinder (121) is provided with two third lead holes (122), which can be aligned with the first lead hole (114) and the second lead hole (118) respectively, so as to connect the two first receiving cavities (111) with the second receiving cavity (112).

4. The electromagnet structure for an electromagnetic pilot valve according to claim 2 or 3, characterized in that, The housing (110) is provided with connecting channels (115) parallel to the first receiving cavity (111). The connecting channels (115) extend from the top surface of the housing (110) to the bottom surface of the housing (110). The six connecting channels (115) are symmetrically arranged on the outside of the two first receiving cavities (111) and are distributed in two rows and three columns.

5. The electromagnet structure for an electromagnetic pilot valve according to claim 4, characterized in that, The housing (110) is provided with a countersunk groove (116), the opening of the countersunk groove (116) is located on the top surface of the housing (110), and a nut is embedded in the countersunk groove (116) for installing the manual operation component (130).

6. The electromagnet structure for an electromagnetic pilot valve according to claim 5, characterized in that, The bottom surface of the housing (110) is provided with a first sealing groove (117), which surrounds the outer periphery of the openings of the two first receiving cavities (111).

7. The electromagnet structure for an electromagnetic pilot valve according to claim 6, characterized in that, The electrical control component (140) includes a socket (141), and the top surface of the second receiving cavity (112) is provided with a mounting hole (113). One end of the socket (141) is inserted into the mounting hole (113). The top surface of the second receiving cavity (112) is lower than the top surface of the first receiving cavity (111) to make the socket (141) lower than the manual operation component (130) to avoid the socket (141) from being hit.

8. The electromagnet structure for an electromagnetic pilot valve according to claim 7, characterized in that, The socket (141) includes a second sealing groove (142) surrounding its outer circumference, the second sealing groove (142) being fitted into the mounting hole (113).

9. The electromagnet structure for an electromagnetic pilot valve according to claim 8, characterized in that, The electronic control assembly (140) includes a circuit board, which is mounted in the second receiving cavity (112).

10. An electromagnetic pilot valve, characterized in that, The electromagnet structure (100) as described in any one of claims 1 to 9 further includes a pilot valve (200) mounted on the bottom surface of the housing (110).

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