Hydraulic electromagnetic valve with multiple piston cylinders

Abstract

The utility model relates to the technical field of hydraulic electromagnetic valves, and discloses a multi-piston-cylinder hydraulic electromagnetic valve which comprises a shell mechanism, a plurality of piston mechanisms and electromagnetic mechanisms with the same number as the piston mechanisms are arranged in the shell mechanism, the plurality of electromagnetic mechanisms control the plurality of piston mechanisms respectively, the shell mechanism comprises a sealing shell, and the sealing shell is provided with a sealing cover. A first baffle is fixedly connected to the interior of the sealing shell, and the interior of the sealing shell is divided into an oil liquid bin and a piston movement bin through the first baffle. According to the multi-piston cylinder hydraulic electromagnetic valve, the multiple oil liquid channels are formed in the sealing shell, the sealing pistons and the electromagnets are arranged in the sealing shell, the number of the sealing pistons and the number of the electromagnets are equal to the number of the oil liquid channels, in the using process, power is supplied to the electromagnets, and therefore the sealing pistons at the corresponding positions are lifted to achieve oil liquid transmission; the conveying path of the oil way is changed by changing the combination mode of the electromagnets, so that the corresponding oil way is controlled, and the effect of controlling multiple ways at the same time is achieved.

Description

Technical Field

[0001] The utility model relates to the technical field of hydraulic solenoid valves, and particularly relates to a multi-piston cylinder hydraulic solenoid valve. Background Technique

[0002] A hydraulic solenoid valve is a basic automation component used to control fluids. It is a type of direction control valve and is used to control the on, off, or change of the direction of oil flow.

[0003] Most of the existing hydraulic solenoid valves work with a single piston and two electromagnetic coils. The piston is pulled in one direction by the electromagnetic coils on both sides to change the liquid flow path.

[0004] When multi-way control is required, the number of solenoid valves needs to be increased correspondingly, which causes problems such as troublesome installation and inconvenient use.

[0005] Therefore, a multi-piston cylinder hydraulic solenoid valve is proposed to achieve the effect of controlling more oil circuits and reducing the installation quantity of solenoid valves. Content of the Utility Model

[0006] The purpose of the utility model is to provide a multi-piston cylinder hydraulic solenoid valve to solve the problems raised in the above background technique.

[0007] To solve the above technical problems, the utility model provides the following technical solution: A multi-piston cylinder hydraulic solenoid valve includes a housing mechanism. Inside the housing mechanism, there are installed multiple piston mechanisms and electromagnetic mechanisms equal in number to the piston mechanisms. The multiple electromagnetic mechanisms respectively control the multiple piston mechanisms;

[0008] The housing mechanism includes a sealed housing. Inside the sealed housing, there is a first baffle fixedly connected. The first baffle divides the inside of the sealed housing into an oil chamber and a piston movement chamber;

[0009] Inside the oil chamber, there are several oil channels opened, and the oil channels extend to the outer surface of the sealed housing;

[0010] The piston mechanism includes a sealed piston. The sealed piston penetrates the first baffle from the piston movement chamber, and the sealed piston extends into the inside of the oil channel to seal the oil channel;

[0011] The electromagnetic mechanism includes an electromagnetic coil and a power distributor. The electromagnetic coil is located above the sealed piston. The electromagnetic coil is electrically connected to the power distributor, and when the electromagnetic coil is energized, it adsorbs the sealed piston to rise to achieve an oil passage;

[0012] On the power distributor, there are power slots equal in number to the electromagnetic coils, and all the power slots are electrically connected to all the electromagnetic coils one-to-one.

[0013] Preferably, a second baffle is further installed inside the sealed housing. The second baffle is located above the first baffle, and the second baffle divides the interior of the sealed housing into an electromagnet installation chamber for supporting the electromagnet.

[0014] Preferably, the electromagnet is installed on the second baffle, and the bottom of the electromagnet penetrates through the second baffle and extends to the top of the sealed piston.

[0015] Preferably, a limiting ring is fixedly connected to the outer surface of the sealed piston. The limiting ring is lapped with the top of the first baffle to limit the height of the sealed piston.

[0016] Preferably, a limiting hole is formed in the top of the sealed piston, and an elastic member is installed inside the limiting hole. The top of the elastic member is inserted into the bottom of the electromagnet.

[0017] Preferably, a magnetic shielding cover is fixedly connected to the outer surface of all the electromagnets. The bottom of the magnetic shielding cover is fixedly connected to the top of the second baffle. A wiring terminal is fixedly connected to the outer surface of the magnetic shielding cover. One end of the wiring terminal is electrically connected to the electromagnet, and the other end of the wiring terminal is electrically connected to the power distributor.

[0018] Preferably, all the oil channels, the sealed pistons and the electromagnets are symmetrically distributed in two rows.

[0019] Compared with the prior art, the beneficial effects achieved by the present utility model are as follows:

[0020] First, by providing a plurality of oil channels on the sealed housing and arranging the same number of sealed pistons and electromagnets inside the sealed housing, during use, the electromagnets are powered, so that the corresponding sealed pistons are lifted to achieve oil transmission. By changing the combination mode of the electromagnets, the oil delivery path is changed to control the corresponding oil circuit, achieving the effect of simultaneously controlling multiple circuits.

[0021] Second, by sleeving a magnetic shielding cover on the outer surface of the electromagnet, the electromagnet is magnetically shielded by the magnetic shielding cover, so as to avoid magnetization interference to the adjacent electromagnets when a single or multiple electromagnets work, affecting the control accuracy, and achieving the anti-interference effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a schematic structural view of the present utility model;

[0023] Figure 2 is a cross-sectional view of the structure of the present utility model;

[0024] Figure 3 is a cross-sectional view of the internal structure of the sealed housing of the present utility model;

[0025] Figure 4 Schematic diagram of the installation position of the piston mechanism of the present utility model;

[0026] Figure 5 For the present utility model Figure 4 Enlarged schematic diagram of the structure at position A in the present utility model;

[0027] Figure 6 Schematic layout diagram of the magnetic shielding cover structure of the present utility model;

[0028] Figure 7 Schematic diagram of the piston mechanism structure of the present utility model;

[0029] Figure 8 Cross-sectional view of the oil passage structure of the present utility model.

[0030] Wherein: 1. Housing mechanism; 101. Sealed housing; 102. First baffle; 103. Second baffle; 104. Oil sump; 105. Piston movement chamber; 106. Electromagnet installation chamber; 107. Oil passage; 2. Piston mechanism; 201. Sealed piston; 202. Limiting ring; 203. Limiting hole; 204. Elastic member; 3. Electromagnetic mechanism; 301. Electromagnet; 302. Magnetic shielding cover; 303. Terminal; 304. Power distributor. Specific embodiments

[0031] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0032] Please refer to Figure 1-8 , a multi-piston cylinder hydraulic solenoid valve, including a housing mechanism 1, wherein a plurality of piston mechanisms 2 and electromagnetic mechanisms 3 equal in number to the piston mechanisms 2 are installed inside the housing mechanism 1, and the plurality of electromagnetic mechanisms 3 respectively control the plurality of piston mechanisms 2;

[0033] The housing mechanism 1 includes a sealed housing 101, and a first baffle 102 is fixedly connected inside the sealed housing 101. The first baffle 102 divides the interior of the sealed housing 101 into an oil sump 104 and a piston movement chamber 105;

[0034] A plurality of oil passages 107 are opened inside the oil sump 104, and the oil passages 107 extend to the outer surface of the sealed housing 101, as Figure 8As shown, the oil passage 107 has an inverted L-shaped structure. Oil enters from the side and flows upward into the interior of the oil storage chamber 104. When the first baffle 102 drops, it seals the side opening of the oil passage 107 to prevent oil from entering from the bottom of the sealing piston 201 and directly pushing up the sealing piston 201, so that the sealing piston 201 cannot function as a seal.

[0035] The piston mechanism 2 includes a sealing piston 201. The sealing piston 201 penetrates through the first baffle 102 from the piston movement chamber 105, and the sealing piston 201 extends into the interior of the oil passage 107 to seal the oil passage 107.

[0036] The electromagnetic mechanism 3 includes an electromagnet 301 and a power distributor 304. The electromagnet 301 is located above the sealing piston 201. The electromagnet 301 is electrically connected to the power distributor 304, and after the electromagnet 301 is energized, it adsorbs the sealing piston 201 to rise to realize the oil passage.

[0037] The power distributor 304 is provided with power slots equal in number to the electromagnets 301. All power slots are electrically connected to all electromagnets 301 one-to-one. By controlling the on-off of the current in different power slots, the corresponding electromagnets 301 can be controlled.

[0038] Through the above technical solution, a number of oil passages 107 are provided on the sealing housing 101, and sealing pistons 201 and electromagnets 301 equal in number to the oil passages 107 are provided inside the sealing housing 101. During use, the electromagnets 301 are powered, so that the sealing pistons 201 at the corresponding positions are lifted to realize oil transmission. By changing the combination mode of the electromagnets 301, the oil delivery path is changed to control the corresponding oil circuit and achieve the effect of simultaneously controlling multiple circuits.

[0039] Specifically, a second baffle 103 is further installed inside the sealing housing 101. The second baffle 103 is located above the first baffle 102. The second baffle 103 divides the interior of the sealing housing 101 into an electromagnet installation chamber 106 for supporting the electromagnet 301.

[0040] Through the above technical solution, the provided second baffle 103 is used to install and support the electromagnet 301, and the power supply part of the electromagnet 301 is located inside the electromagnet installation chamber 106 to improve the safety of the equipment.

[0041] Specifically, the electromagnet 301 is installed on the second baffle 103, and the bottom of the electromagnet 301 penetrates through the second baffle 103 and extends to the top of the sealing piston 201.

[0042] Through the above technical solution, the function of setting the second baffle 103 is not only to support the electromagnet 301, but also to further prevent leakage. When leakage occurs at the connection between the first baffle 102 and the sealing piston 201, the liquid will not spread to the power supply part of the electromagnet 301 due to the blockage of the second baffle 103, improving the safety during the operation of the equipment;

[0043] Specifically: The magnetic core part of the electromagnet 301 extends to the top of the sealing piston 201, and the electromagnetic coil is located above the second baffle 103. After leakage occurs, since the electromagnetic coil is isolated, it can continue to provide magnetism to the magnetic core part, enabling the magnetic core part to still achieve the effect of adsorbing the sealing piston 201, improving the service life and safety.

[0044] Specifically, a limiting ring 202 is fixedly connected to the outer surface of the sealing piston 201, and the limiting ring 202 is lapped with the top of the first baffle 102 to limit the height of the sealing piston 201.

[0045] Through the above technical solution, the purpose of setting the limiting ring 202 is to limit the descending height of the sealing piston 201, support the sealing piston 201, make the distance between the top of the sealing piston 201 and the bottom of the electromagnet 301 suitable, and be used to increase the weight of the sealing piston 201. Thus, after the sealing piston 201 loses the adsorption force of the electromagnet 301, it can quickly fall into the internal oil passage 107 to block the oil passage 107.

[0046] Specifically, a limiting hole 203 is opened at the top of the sealing piston 201, and an elastic member 204 is installed inside the limiting hole 203. The top of the elastic member 204 is inserted into the bottom of the electromagnet 301.

[0047] Through the above technical solution, a limiting hole 203 is opened at the top of the sealing piston 201 to support and limit the elastic member 204. Thus, after the sealing piston 201 loses the traction force of the electromagnet 301, it can push the sealing piston 201 back to the initial state, and the elastic member 204 exerts a certain pressure on the sealing piston 201, preventing the oil from jacking up the sealing piston 201 from the side and causing an oil leakage incident;

[0048] As Figure 4 shown, in order to improve the stability of the elastic member 204, corresponding grooves are also opened at the bottom of the electromagnet 301 to limit the top of the elastic member 204. After the electromagnet 301 adsorbs the sealing piston 201, the elastic member 204 contracts into the limiting hole 203 and the groove at the bottom of the electromagnet 301, making the electromagnet 301 and the sealing piston 201 fit together.

[0049] Specifically, a magnetic shield 302 is fixedly connected to the outer surface of all the electromagnets 301. The bottom of the magnetic shield 302 is fixedly connected to the top of the second baffle 103. A terminal 303 is fixedly connected to the outer surface of the magnetic shield 302. One end of the terminal 303 is electrically connected to the electromagnet 301, and the other end of the terminal 303 is electrically connected to the power distributor 304.

[0050] Through the above technical solution, a magnetic shield 302 is sleeved on the outer surface of the electromagnet 301, so as to magnetically shield the electromagnet 301 through the magnetic shield 302, so as to avoid magnetization interference caused to the adjacent electromagnet 301 when one or more electromagnets 301 are working, thereby affecting the control accuracy, and achieving the effect of anti-interference.

[0051] The provided terminal 303 is used to facilitate the welding of the circuit, so that the circuit can be conveniently connected to the power distributor 304.

[0052] Specifically, all the oil channels 107, the sealing pistons 201 and the electromagnets 301 are symmetrically distributed in two rows.

[0053] Through the above technical solution, the oil channels 107, the sealing pistons 201 and the electromagnets 301 are divided into two rows and symmetrically distributed, so as to reduce the occupied space of the whole device and facilitate the connection and arrangement of the pipelines.

[0054] During use, a plurality of oil channels 107 are arranged on the sealing housing 101, and the same number of sealing pistons 201 and electromagnets 301 as the number of the oil channels 107 are arranged inside the sealing housing 101. During the use process, the electromagnet 301 is powered, so that the corresponding sealing piston 201 is lifted to realize oil transmission. By changing the combination mode of the electromagnets 301, the conveying path of the oil circuit is changed to control the corresponding oil circuit, so as to achieve the effect of simultaneously controlling multiple circuits.

[0055] By sleeving a magnetic shield 302 on the outer surface of the electromagnet 301, the electromagnet 301 is magnetically shielded through the magnetic shield 302, so as to avoid magnetization interference caused to the adjacent electromagnet 301 when one or more electromagnets 301 are working, thereby affecting the control accuracy, and achieving the effect of anti-interference.

[0056] Although the embodiments of the present invention have been shown and described, those of ordinary skill in the art can understand that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A multi-plug cylinder hydraulic solenoid valve, comprising a housing mechanism (1); Characterized in that: A plurality of piston mechanisms (2) and an equal number of electromagnetic mechanisms (3) as the piston mechanisms (2) are installed inside the housing mechanism (1), and the plurality of electromagnetic mechanisms (3) respectively control the plurality of piston mechanisms (2); The housing mechanism (1) includes a sealed housing (101), and a first baffle (102) is fixedly connected inside the sealed housing (101). The first baffle (102) divides the interior of the sealed housing (101) into an oil chamber (104) and a piston movement chamber (105); A number of oil channels (107) are opened inside the oil chamber (104), and the oil channels (107) extend to the outer surface of the sealed housing (101); The piston mechanism (2) includes a sealed piston (201). The sealed piston (201) penetrates the first baffle (102) from the piston movement chamber (105), and the sealed piston (201) extends into the interior of the oil channel (107) to seal the oil channel (107); The electromagnetic mechanism (3) includes an electromagnet (301) and a power distributor (304). The electromagnet (301) is located above the sealed piston (201). The electromagnet (301) is electrically connected to the power distributor (304), and after the electromagnet (301) is energized, it adsorbs the sealed piston (201) to rise to realize an oil passage; The power distributor (304) is provided with power slots equal in number to the electromagnets (301), and all the power slots are electrically connected to all the electromagnets (301) one-to-one.

2. The multi-plug cylinder hydraulic solenoid valve according to claim 1, characterized in that: A second baffle (103) is further installed inside the sealed housing (101). The second baffle (103) is located above the first baffle (102). The second baffle (103) divides the interior of the sealed housing (101) into an electromagnet installation chamber (106) for supporting the electromagnet (301).

3. The multi-plug cylinder hydraulic solenoid valve according to claim 2, characterized in that: The electromagnet (301) is installed on the second baffle (103), and the bottom of the electromagnet (301) penetrates the second baffle (103) and extends to the top of the sealed piston (201).

4. A multi-plug cylinder hydraulic solenoid valve according to claim 1, characterized in that: A limiting ring (202) is fixedly connected to the outer surface of the sealed piston (201). The limiting ring (202) overlaps with the top of the first baffle (102) to limit the height of the sealed piston (201).

5. A multi-plug cylinder hydraulic solenoid valve according to claim 1, characterized in that: A limiting hole (203) is opened at the top of the sealed piston (201), and an elastic member (204) is installed inside the limiting hole (203). The top of the elastic member (204) is inserted into the bottom of the electromagnet (301).

6. The multi-plug cylinder hydraulic solenoid valve according to claim 2, characterized in that: A magnetic shield (302) is fixedly connected to the outer surface of all the electromagnets (301). The bottom of the magnetic shield (302) is fixedly connected to the top of the second baffle (103). A wiring terminal (303) is fixedly connected to the outer surface of the magnetic shield (302). One end of the wiring terminal (303) is electrically connected to the electromagnet (301), and the other end of the wiring terminal (303) is electrically connected to the power distributor (304).

7. A multi-plug cylinder hydraulic solenoid valve according to any one of claims 1-6, characterized in that: All the oil channels (107), sealing pistons (201) and electromagnets (301) are symmetrically distributed in two rows.

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