Valve terminal for electromagnetic valve

Abstract

The valve terminal for the electromagnetic valves comprises a valve terminal body and a plurality of electromagnetic valves fixed to the valve terminal body, the valve terminal body is provided with an air inlet pipeline, the air inlet pipeline is provided with an air source purification assembly, and the air source purification assembly comprises a main confluence block, a source changing block and a purification assembly. A first cavity, a second cavity and a third cavity are formed in the source changing block, and the main confluence block is communicated with an air path of the first cavity and an air path of the third cavity. Particles, chippings and other impurities in compressed air are filtered out through the purification assembly, so that it is guaranteed that the compressed air entering the air inlet pipeline is purified, the service life of the valve terminal and the service life of the electromagnetic valve are prolonged, the positions of the first piston and the second piston are changed by rotating the switching rod, and the service life of the electromagnetic valve is prolonged. Therefore, the main air inlet directly conveys compressed air to the air inlet pipeline, the situation that an electromagnetic valve needs to be stopped due to replacement of an evolution assembly is avoided, and the product has the advantages of air source dust removal, non-stop maintenance and long service life.

Description

Technical Field

[0001] The utility model relates to the technical field of pneumatic control, in particular to a valve island for a solenoid valve. Background Art

[0002] A valve island is a fixture that brings together multiple fluid channels. A valve island usually consists of an air inlet line and two air outlet lines.

[0003] When the solenoid valve is installed on the valve island, the air inlet end of the solenoid valve is connected to the air inlet pipeline, and the air outlet end of the solenoid valve is connected to the air outlet pipeline. Since the compressed air in the air inlet pipeline is often not purified or filtered by the air source processor, or the purification is not thorough, and the pipes, joints, cylinders and various loads generate particles, debris and other impurities during assembly and use, the originally clean compressed air is easily mixed with various foreign matter, which will pose a serious threat to solenoid valve products with precise performance requirements and strict quality requirements; once foreign matter is entrained into the product by the air, it will cause varying degrees of damage to the various components of the product cavity, greatly reducing the product's service life, and even causing the product to malfunction. Therefore, the applicant has made a beneficial design and found a solution to the above-mentioned problem. The technical solution to be introduced below was produced in this context. Summary of the invention

[0004] The purpose of the utility model is to overcome the shortcomings of the problems mentioned in the above background technology and provide a product with air source dust removal, non-stop maintenance and long service life.

[0005] To solve the above problems, the utility model adopts the following technical solutions.

[0006] A valve island for a solenoid valve comprises a valve island and a plurality of solenoid valves fixed on the valve island, the valve island being provided with an air intake pipe, the air intake pipe being provided with an air source purification component, the air source purification component comprising a main confluence block, a source change block and a purification component, the source change block being provided with a first cavity, a second cavity and a third cavity, the main confluence block and the air paths of the first cavity and the third cavity being interconnected, the purification component being connected to the second cavity through a hose, a retractable switching rod being provided on one side of the second cavity, the switching rod being provided with a first piston and a second piston, the first piston being arranged between the second cavity and the third cavity.

[0007] Preferably, the main manifold block is threadedly connected to the air intake pipe, and the main manifold block is provided with a first air path, which is communicated with the air intake pipe.

[0008] Preferably, the source changing block is threadedly connected to the air inlet end of the first air circuit, a second air circuit is also provided in the source changing block and is connected to the second cavity, the source changing block is provided with a through hole and is connected to the first cavity, and the first cavity and the third cavity are connected to the first air circuit.

[0009] Preferably, a through hole for the first piston to extend and retract is provided between the second cavity and the third cavity, a threaded hole is provided on the end face of the second cavity, a main air inlet is provided near the through hole in the second cavity, and quick-plug interfaces are provided at the second air path and the main air inlet.

[0010] Preferably, the switching rod is threadedly connected to the threaded hole, a knob is provided on the end face of the switching rod, the second piston abuts against the end face of the second cavity, so that the second air path is connected to the main air inlet, and the second piston is located on the path of the second air path.

[0011] Preferably, the purification component includes a tube body and a cap, the tube body is threadedly connected to the through hole, the chamber in the tube body is communicated with the first cavity, the chamber in the tube body is provided with a support portion, the support portion is provided with a first filter screen for filtering tiny particles, and a second filter screen for filtering large particles arranged at the inlet of the first filter screen, and the cap is threadedly connected to the tube body.

[0012] Preferably, the hose is connected to one end of the cap and communicates with the chamber in the tube body, and the other end of the hose is inserted into the quick-connect interface of the second gas circuit.

[0013] Beneficial effects:

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] (1) The utility model uses the first filter and the second filter to filter out impurities such as particles and debris in the compressed air, thereby ensuring that the compressed air entering the air intake pipe is purified, extending the service life of the valve island and the solenoid valve, and making the product have the advantages of air source dust removal and long service life.

[0016] (2) When the utility model needs to be overhauled, in order to avoid the need to stop the solenoid valve on the busbar from stopping working due to replacement of the purification component, the position of the first piston and the second piston can be changed by rotating the switching rod, so that the first piston enters the third cavity, and the second piston blocks the second air path, so that the compressed air enters the second cavity and the third cavity through the main air inlet, and the first air path enters the air intake pipe, thereby giving the product the advantage of non-stop maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a structural schematic diagram of a valve island for a solenoid valve of the utility model;

[0018] Figure 2 The side cross-sectional structure of a valve island for a solenoid valve of the utility model is shown in FIG. Figure 1 ;

[0019] Figure 3 The side cross-sectional structure of a valve island for a solenoid valve of the utility model is shown in FIG. Figure 2 ;

[0020] Figure 4 This is a structural schematic diagram of a source change block of a valve island for a solenoid valve of the utility model;

[0021] The corresponding relationship between the illustrations and component names in the figure is as follows:

[0022] Reference numerals: 1, valve island; 2, solenoid valve; 3, air source purification assembly; 4, purification assembly; 5, main manifold block; 6, source change block; 7, switching rod; 8, quick-connect interface; 9, hose;

[0023] 11. Air intake pipe;

[0024] 41. tube body; 42. cap; 43. first filter screen; 44. second filter screen;

[0025] 411, support part;

[0026] 51. First gas path;

[0027] 61. first cavity; 62. second cavity; 63. third cavity; 64. second air path; 65. through hole; 66. perforation;

[0028] 621, threaded hole; 622, main air inlet;

[0029] 71. First piston; 72. Second piston; 73. Knob. DETAILED DESCRIPTION

[0030] The technical solution of the utility model will be clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are 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 ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0031] In the description of the present invention, it is necessary to understand that the directions or positional relationships indicated by the terms "up", "down", "left" and "right" are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation on the present invention.

[0032] In the embodiment of the present invention, "and / or" is only a description of the association relationship of the associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0033] Reference example Figures 1 to 4 A valve island for a solenoid valve comprises a valve island 1 and a plurality of solenoid valves 2 fixed on the valve island 1. The valve island 1 is provided with an air intake pipe 11, and the air intake pipe 11 is provided with an air source purification component 43. The air source purification component 43 comprises a main confluence block 5, a source change block 6, and a purification component 4. A first cavity 61, a second cavity 62, and a third cavity 63 are provided in the source change block 6. The main confluence block 5 is connected to the air paths of the first cavity 61 and the third cavity 63. The purification component 4 is connected to the second cavity 62 through a hose 9. A retractable switching rod 7 is provided on one side of the second cavity 62. The switching rod 7 is provided with a first piston 71 and a second piston 72. The first piston 71 is arranged between the second cavity 62 and the third cavity 63.

[0034] It is worth mentioning that the main manifold block 5 is threadedly connected to the air intake pipe 11, and the main manifold block 5 is provided with a first gas path 51, which is communicated with the air intake pipe 11, and the first gas path 51 is used in conjunction with the air intake pipe 11;

[0035] It is worth mentioning that the source-changing block 6 is threadedly connected to the air inlet end of the first air path 51, and a second air path 64 is also provided in the source-changing block 6, and is communicated with the second cavity 62. The source-changing block 6 is provided with a through hole 65, and is communicated with the first cavity 61. The first cavity 61 and the third cavity 63 are communicated with the first air path 51. The second air path 64 is used in conjunction with the first piston 71 and the second piston 72 of the switching rod 7, and the through hole 65 is used in conjunction with the cap body;

[0036] It is worth mentioning that a through hole 66 is provided between the second cavity 62 and the third cavity 63 for the first piston 71 to extend and retract, a threaded hole 621 is provided on the end surface of the second cavity 62, a main air inlet 622 is provided near the through hole 66 of the second cavity 62, and a quick-plug interface 8 is provided at the second air path 64 and the main air inlet. When the first piston 71 is placed in the through hole 66, the communication between the second cavity 62 and the third cavity 63 is blocked. When the first piston 71 leaves the through hole 66, the compressed air in the second cavity 62 enters the third cavity 63. The threaded hole 621 is used in conjunction with the switching rod 7, and the quick-plug interface 8 facilitates the plugging of the hose 9.

[0037] It is worth mentioning that the switch rod 7 is threadedly connected to the threaded hole 621, and a knob 73 is provided on the end surface of the switch rod 7. The second piston 72 abuts against the end surface of the second cavity 62, so that the second gas path 64 is connected with the main gas inlet 622. The second piston 72 is located on the path of the second gas path 64, and the knob 73 is convenient for the user to rotate the switch rod 7.

[0038] It is worth mentioning that the purification component 4 includes a tube body 41 and a cap 42. The tube body 41 is threadedly connected to the through hole 65. The chamber in the tube body 41 is connected to the first cavity 61. The chamber in the tube body 41 is provided with a support portion 411. The support portion 411 is provided with a first filter screen 43 for filtering tiny particles, and a second filter screen 44 for filtering large particles arranged at the entrance of the first filter screen 43. The cap 42 is threadedly connected to the tube body 41, and the support portion 411 provides support for the first filter screen 43 and the second filter screen 44.

[0039] It is worth mentioning that the hose 9 is connected to one end of the cap 42 and is connected to the chamber in the tube body 41. The other end of the hose 9 is inserted into the quick-insert interface 8 of the second air circuit 64. By removing the cap 42, the maintenance work can be quickly completed by replacing the tube body 41, which greatly reduces the maintenance workload.

[0040] The use principle of the utility model is now described as follows:

[0041] When maintenance is required, the switch rod 7 is rotated to move toward the third cavity 63, and the first piston 71 goes out from the outlet of the through hole 66 to open the communication between the second cavity 62 and the third cavity 63, and the second piston 72 blocks the second air path 64, so that the compressed air flows through the main air inlet 622, the second cavity 62, and the third cavity 63 in sequence and enters the first air path 51;

[0042] At this time, the purification component 4 can be replaced without interfering with the normal operation of the valve island 1. When the purification component 4 is replaced, the switching rod 7 is rotated to reset the first piston 71 and the second piston 72, thereby changing the flow direction of the compressed air, so that the compressed air flows through the main air inlet 622, the second cavity 62, the second air path 64, the hose 9, the second filter 44, the first filter 43, the first cavity 61 and enters the first air path 51.

[0043] The above design scheme can make the product have the advantages of air source dust removal, non-stop maintenance and long service life.

[0044] The above content is a further detailed description of the utility model in combination with specific implementation methods. It cannot be determined that the specific implementation of the utility model is limited to these descriptions. For ordinary technicians in the technical field to which the utility model belongs, without departing from the concept of the utility model, they can also make several simple deductions or substitutions, which should be regarded as belonging to the scope of protection determined by the claims submitted for the utility model.

Claims

1. A valve island for a solenoid valve, comprising a valve island (1), and a plurality of solenoid valves (2) fixed on the valve island (1), wherein the valve island (1) is provided with an air intake pipe (11), and the air intake pipe (11) is provided with an air source purification component (4) (3), characterized in that: The gas source purification component (4) (3) includes a main confluence block (5), a source change block (6), and a purification component (4); a first cavity (61), a second cavity (62), and a third cavity (63) are provided in the source change block (6); the gas paths of the main confluence block (5) and the first cavity (61) and the third cavity (63) are interconnected; the purification component (4) is connected to the second cavity (62) through a hose (9); a retractable switching rod (7) is provided on one side of the second cavity (62); the switching rod (7) is provided with a first piston (71) and a second piston (72); the first piston (71) is arranged between the second cavity (62) and the third cavity (63).

2. The valve island for a solenoid valve according to claim 1, characterized in that: The main manifold block (5) is threadedly connected to the air intake pipeline (11); the main manifold block (5) is provided with a first air path (51) which is in communication with the air intake pipeline (11).

3. The valve island for a solenoid valve according to claim 2, characterized in that: The source changing block (6) is threadedly connected to the air inlet end of the first air path (51); a second air path (64) is also provided in the source changing block (6) and is communicated with the second cavity (62); a through hole (65) is provided in the source changing block (6) and is communicated with the first cavity (61); the first cavity (61) and the third cavity (63) are communicated with the first air path (51).

4. The valve island for a solenoid valve according to claim 3, characterized in that: A through hole (66) for the first piston (71) to be extended and retracted is provided between the second cavity (62) and the third cavity (63); a threaded hole (621) is provided on the end surface of the second cavity (62); a main air inlet (622) is provided near the through hole (66) in the second cavity (62); and a quick-insert interface (8) is provided on the second air path (64) and the main air inlet (622).

5. The valve island for a solenoid valve according to claim 4, characterized in that: The switching rod (7) is threadedly connected to the threaded hole (621); a knob (73) is provided on the end surface of the switching rod (7); the second piston (72) abuts against the end surface of the second cavity (62) so that the second air path (64) is connected to the main air inlet (622); and the second piston (72) is located on the path of the second air path (64).

6. The valve island for a solenoid valve according to claim 5, characterized in that: The purification component (4) comprises a tube body (41) and a cap (42); the tube body (41) is threadedly connected to the through hole (65); the chamber in the tube body (41) is connected to the first cavity (61); the chamber in the tube body (41) is provided with a support portion (411); the support portion (411) is provided with a first filter screen (43) for filtering tiny particles, and a second filter screen (44) for filtering large particles arranged at the entrance of the first filter screen (43); the cap (42) is threadedly connected to the tube body (41).

7. The valve island for a solenoid valve according to claim 6, characterized in that: The hose (9) is connected to one end of the cap (42) and communicates with the chamber in the tube body (41); the other end of the hose (9) is inserted into the quick-connect interface (8) of the second gas path (64).

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