High-reliability three-way electromagnetic reversing valve

Abstract

The utility model relates to the field of reversing valves, in particular to a high-reliability three-way electromagnetic reversing valve, which is characterized in that a shunting port I is arranged in an input port in the middle of a reversing valve main body, the shunting port I is communicated with a filter piece, and the other side of the filter piece is communicated with a valve cavity in the reversing valve main body through a shunting port II. According to the reversing valve, the flow guide plate is arranged at the input port to guide media, the media are guided into the filtering piece through the first flow dividing port and the second flow dividing port, impurities are filtered through the filtering assembly, the impurities are prevented from entering the valve body to affect normal operation of the reversing valve, and the operation reliability of the reversing valve is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of reversing valve, especially high reliable three -way electromagnetic reversing valve. BACKGROUND

[0002] Three -way electromagnetic reversing valve is based on three -way reversing valve, and its working principle is that the movement of the valve core is controlled through the electromagnet to realize the reversing of fluid, when the electromagnet is electrified, the magnetic field attracts the valve core to move, thereby changing the connection state of fluid passage, when the electromagnet is deenergized, the magnetic field disappears, and the valve core resets under the action of spring, and restores to the initial fluid flow direction.

[0003] At present, in the actual application process, the medium directly enters from the P port in part of the prior art three -way electromagnetic reversing valve, and with long -term use, the little impurity and dirt in the medium will gradually affect the normal operation of the valve core, so that it cannot normally open and close or the sealing performance is reduced, and the overall reliability of the reversing valve cannot be guaranteed. UTILITY MODEL CONTENTS

[0004] The utility model discloses a high reliable three -way electromagnetic reversing valve to solve the shortcomings in the prior art.

[0005] In order to realize the above-mentioned purpose, the utility model adopts the following technical scheme:

[0006] High reliable three -way electromagnetic reversing valve, including the reversing valve main part, the input port in the middle part of the reversing valve main part is opened with the shunt one, the shunt one is connected through the filter piece, and the other side of the filter piece is communicated with the valve cavity in the reversing valve main body through the shunt two.

[0007] The shunt one and the shunt two are separated by the flow guide plate, the medium enters the inside of the filter piece through the shunt one, and is discharged from the shunt two in the filter piece;

[0008] The shunt two is equipped with a filter cartridge, and the inner side away from the filter cartridge is provided with an inner layer filter cartridge with a larger filter diameter, and one end of the filter cartridge and the inner layer filter cartridge is jointly connected with the sealing seat.

[0009] One end of the filter cartridge and the inner layer filter cartridge is assembled on one side of the filter piece through the mounting cover, the inner side of the mounting cover is provided with a limiting block, and the limiting block is used for abutting the arc-shaped inclined groove formed in the inner side of the filter piece.

[0010] In addition, preferably, the filter piece is installed on one side of the reversing valve main body and is correspondingly installed on one side adjacent to the input port.

[0011] In addition, preferably, the middle part of the filter piece is provided with a flow cavity, and the flow cavity is used for connecting the shunt one and the shunt two.

[0012] In addition, preferably, a limiting convex ring is arranged on one side of the flow cavity, and the limiting convex ring is in extrusion fit with the sealing seat to realize sealing.

[0013] In addition, preferably, a double-layer filter cylinder part is arranged on one side of the mounting cover, and the double-layer filter cylinder part comprises a filter cylinder and an inner-layer filter cylinder.

[0014] In addition, preferably, a plurality of annular grooves are arranged in the middle part of the sealing seat, and the annular grooves are used for connecting the filter cylinder and the inner-layer filter cylinder.

[0015] In addition, preferably, one end of the arc-shaped inclined groove is provided with an insertion opening for clamping the limiting block, and the other end is gradually inclined to one side of the flow cavity, and when the limiting block is in butt joint with the arc-shaped inclined groove, the limiting block is guided to generate horizontal displacement.

[0016] The beneficial effects of the utility model are as follows:

[0017] Firstly, in the utility model, the flow guide plate is arranged at the input port to guide the medium, the medium is introduced into the filter part through the arrangement of the shunt ports one and two, and the impurities are filtered through the filter assembly, so that the impurities are prevented from entering the valve body to affect the normal operation of the reversing valve, and the operation reliability of the reversing valve is improved.

[0018] Secondly, in the utility model, the filter cylinder and the inner-layer filter cylinder form a double-layer filter mechanism, and the arrangement of the mounting cover, the limiting block and the arc-shaped inclined groove and other assemblies makes the disassembly and maintenance process of the filter part more convenient, improves the maintenance efficiency of the filter cylinder, further increases the filtering effect of the impurities, and thus the purpose of improving the operation reliability of the reversing valve is achieved. DRAWINGS

[0019] Figure 1 The utility model provides a high-reliability three-way electromagnetic reversing valve external structure schematic diagram;

[0020] Figure 2 The utility model provides an input port internal structure sectional view;

[0021] Figure 3 The utility model provides a shunt port one and two communication structure schematic diagram;

[0022] Figure 4 The utility model provides a filter part internal structure schematic diagram;

[0023] Figure 5 The utility model provides a filter cylinder mounting structure schematic diagram;

[0024] Figure 6 The utility model provides an arc-shaped inclined groove assembly structure schematic diagram;

[0025] Figure 7 The utility model provides a sealing seat installation structure schematic view.

[0026] In the drawing: 1, reversing valve main part; 2, input; 3, shunt one; 31, shunt two; 4, filter piece; 41, flow-through cavity; 5, flow guide plate; 6, observation window; 7, filter cartridge; 71, inner layer filter cartridge; 8, mounting cover; 81, limit block; 9, limit convex ring; 10, sealing seat; 11, arc chute; 111, insertion port; 12, annular groove. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the utility model will be apparently and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments.

[0028] Reference Figures 1-7 High-reliability three-way electromagnetic reversing valve, including reversing valve main body 1, the input 2 in the middle part of reversing valve main body 1 is equipped with shunt one 3, shunt one 3 is connected through filter piece 4, and the other side of filter piece 4 is communicated with the valve cavity inside reversing valve main body 1 through shunt two 31;

[0029] Further, shunt one 3 and shunt two 31 are separated by flow guide plate 5, medium enters filter piece 4 inside through shunt one 3, and is discharged from shunt two 31 in filter piece 4 inside;

[0030] Further, shunt two 31 is equipped with filter cartridge 7, and the inner side away from filter cartridge 7 is provided with inner layer filter cartridge 71 with larger filter diameter, and one end of filter cartridge 7 and inner layer filter cartridge 71 is jointly clamped with sealing seat 10.

[0031] Further, one end of filter cartridge 7 and inner layer filter cartridge 71 is assembled on one side of filter piece 4 through mounting cover 8, the inner side of mounting cover 8 is provided with limit block 81, limit block 81 is used to butt joint arc chute 11 opened in the inner side of filter piece 4, arc chute 11 gradually inclines inward to improve the connection tightness of mounting cover 8, and sealing ring is still provided at the assembly connection of mounting cover 8 and filter piece 4 to ensure sealing.

[0032] The middle part of filter piece 4 is provided with flow-through cavity 41, and flow-through cavity 41 is used to communicate shunt one 3 and shunt two 31.

[0033] One side of flow-through cavity 41 is provided with limit convex ring 9, limit convex ring 9 is extruded and fitted with sealing seat 10 to realize sealing.

[0034] One side of mounting cover 8 is provided with double-layer filter cartridge piece, including filter cartridge 7 and inner layer filter cartridge 71, the filter diameter of filter cartridge 7 is less than the filter diameter of inner layer filter cartridge 71, and the setting of different filter diameters is used to improve the filtering effect.

[0035] The middle part of the sealing seat 10 is provided with a plurality of annular grooves 12, which are used to connect the filter cartridge 7 and the inner filter cartridge 71.

[0036] One end of the arc-shaped chute 11 is provided with an insertion port 111 for clamping the limiting block 81, and the other end gradually inclines to one side of the flow-through cavity 41. When the limiting block 81 is in butt joint with the arc-shaped chute 11, the limiting block 81 is guided to generate horizontal displacement.

[0037] In this embodiment, when the reversing valve body 1 is in use, the medium enters the shunt port one 3 through the input port 2. Due to the arrangement of the flow guide plate 5, the medium enters the flow-through cavity 41 through the shunt port one 3 and enters the valve cavity of the valve body through the shunt port two 31.

[0038] In this process, the filter cartridge 7 and the inner filter cartridge 71 arranged at the shunt port two 31 distribute and filter impurities in the medium. After a long time of use, when impurities accumulate, the limiting block 81 is separated from the arc-shaped chute 11 by rotating the installation cover 8. At this time, the filter cartridge 7 can be pulled out, and then the sealing seat 10 is pulled out from the bottom of the filter cartridge 7 and the inner filter cartridge 71, so as to clean and maintain the filter cartridge 7.

[0039] In the installation process of the filter cartridge 7, the sealing seat 10 is clamped into butt joint with the filter cartridge 7 and the inner filter cartridge 71, and is inserted into the flow-through cavity 41, so that the sealing seat 10 is matched with the limiting convex ring 9 in butt joint. Then, the limiting block 81 is aligned with the insertion port 111, and the limiting block 81 is clamped into the arc-shaped chute 11 in the manner of pressing and rotating. Since the arc-shaped chute 11 is arranged in an inclined manner, horizontal displacement is generated during the installation of the installation cover 8, so as to improve the installation tightness.

[0040] In the overall disassembly process of the installation cover 8, only rotation and pressing are needed, which is convenient to operate and has good sealing performance. At the same time, the arrangement of the filter element 4 avoids the entry of impurities in the medium into the interior of the valve body, and improves the operation reliability of the reversing valve.

[0041] The outer wall of the filter element 4 is provided with an observation window 6 for observing the flow-through cavity 41.

[0042] It is worth noting that the valve body should not be in a state of use when the filter cartridge 7 is maintained.

[0043] It is worth noting that the reversing valve body 1, i.e. the specific operation principle, internal structure and channel of the three-way electromagnetic reversing valve are prior art, and the basic structure principle can be directly known by those skilled in the art, so no more description is made.

[0044] The above merely describes a preferred embodiment of the present application, and the protection scope of the present application is not limited thereto, and any skilled person in the art, according to the technical scheme and the inventive concept of the present application, makes equivalent replacement or change within the technical range disclosed by the present application, which should be covered within the protection scope of the present application.

Claims

1. A highly reliable three-way solenoid directional valve, comprising a directional valve body (1), characterized in that, A diversion port 1 (3) is provided in the inlet (2) located in the middle of the reversing valve body (1). The diversion port 1 (3) is connected to the filter element (4). The other side of the filter element (4) is connected to the valve cavity inside the reversing valve body (1) through the diversion port 2 (31). The first diversion port (3) and the second diversion port (31) are separated by a guide plate (5). The medium enters the filter element (4) through the first diversion port (3) and is discharged through the second diversion port (31) inside the filter element (4). A filter cylinder (7) is installed at one of the two diversion ports (31), and an inner filter cylinder (71) with a larger filter diameter is provided on the inner side away from the filter cylinder (7). One end of the filter cylinder (7) and the inner filter cylinder (71) are engaged with the sealing seat (10). One end of the filter cylinder (7) and the inner filter cylinder (71) is assembled on one side of the filter element (4) through the mounting cover (8). The inner side of the mounting cover (8) is provided with a limiting block (81), which is used to connect with the arc-shaped inclined groove (11) opened on the inner side of the filter element (4).

2. The high-reliability three-way solenoid directional valve according to claim 1, characterized in that, The filter element (4) is installed on one side of the reversing valve body (1) and is installed on the side adjacent to the inlet (2).

3. The high-reliability three-way solenoid directional valve according to claim 2, characterized in that, The filter element (4) has a flow cavity (41) in the middle, which is used to connect the first branch port (3) and the second branch port (31).

4. The high-reliability three-way solenoid directional valve according to claim 3, characterized in that, A limiting protrusion (9) is provided on one side of the flow cavity (41), and the limiting protrusion (9) is squeezed and fitted with the sealing seat (10) to achieve sealing.

5. The high-reliability three-way solenoid directional valve according to claim 1, characterized in that, The mounting cover (8) has a double-layer filter cylinder on one side, including a filter cylinder (7) and an inner filter cylinder (71). The filter diameter of the filter cylinder (7) is smaller than that of the inner filter cylinder (71).

6. The high-reliability three-way solenoid directional valve according to claim 1, characterized in that, The sealing seat (10) has multiple annular grooves (12) in the middle, which are used to connect the filter cylinder (7) and the inner filter cylinder (71).

7. The high-reliability three-way solenoid directional valve according to claim 1, characterized in that, One end of the arc-shaped inclined groove (11) is provided with an insertion port (111) to engage the limiting block (81), and the other end gradually tilts towards the flow cavity (41). When the limiting block (81) engages with the arc-shaped inclined groove (11), the limiting block (81) is guided by the tilt to generate a horizontal displacement.

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