Two-position three-way electromagnetic valve

Abstract

The utility model relates to the technical field of electromagnetic valves, and discloses a two-position three-way electromagnetic valve which comprises a first connecting pipe, one side of the first connecting pipe is connected with a second connecting pipe, the bottom of the second connecting pipe is fixedly connected with a mounting plate, and the bottom of the mounting plate is provided with a mounting mechanism. A pressure control mechanism is connected into the first connecting pipe, the mounting mechanism comprises a mounting groove, the mounting groove is formed in the mounting plate, and a sliding block is slidably connected into the mounting groove. According to the two-position three-way electromagnetic valve, installation of the device is facilitated through the installation mechanism, meanwhile, the occupied space of the device is reduced, hydraulic elements can be protected through the pressure control mechanism so that the hydraulic elements can be prevented from being impacted by transient pressure, when the pressure reaches the set value of the valve at a pressure inlet, the valve begins to overflow towards an oil tank opening, and the oil stain resistance is high; and the response speed is high, so that the oil return back pressure can be set according to the pressure requirements of customers.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic valves, in particular to a two-position three-way electromagnetic valve. Background Art

[0002] A valve is a mechanical device that controls the flow, direction, pressure, temperature, etc. of a flowing fluid medium. A valve is a basic component in a piping system. Valve fittings are technically the same as pumps and are often discussed as a separate category. Valves can be operated manually or with a handwheel, handle or pedal, and can also be controlled to change the pressure, temperature and flow of the fluid medium.

[0003] A Chinese patent with the announcement number CN2405980Y disclosed a flushing valve, in which a pressure cup is installed on one side of the main body, the pressure cup faces the bottom of the floating valve, the outer end of the pressure cup is slightly convex outward in an arc shape, and the cup body is screwed into the space of the main body cavity. The pressure cup and the surrounding wall of the main body cavity do not contact each other, so that mud and sand can only accumulate at the bottom of the main body cavity and cannot flow into the pressure cup, so that the floating valve and the pressure cup are in good contact, the wear of the rubber ring is reduced, the service life is extended, and the water flow rate is increased due to the increase in the main body cavity space. The utility model is a type without a back cover, the back occupies a small wall space, and the installation is convenient, fast and beautiful, which is suitable for flushing sanitary ware.

[0004] However, for ease of use, the device needs to be easily disassembled and maintained, and the connecting pipe 2 needs to be buffered to prevent the connection between the connecting pipe 2 and the connecting pipe 1 from loosening, but this flushing valve is not easy to disassemble. Utility Model Content

[0005] 1. Technical issues to be resolved

[0006] In view of the shortcomings of the prior art, the utility model provides a two-position three-way solenoid valve, which has the advantages of being easy to install and reducing the space occupied by the device, protecting the hydraulic components to prevent them from being impacted by transient pressure, and setting the return oil back pressure according to the pressure requirements of the customer.

[0007] (II) Technical solution

[0008] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a two-position three-way solenoid valve, comprising a first connecting pipe, one side of the first connecting pipe is connected to the second connecting pipe, the bottom of the second connecting pipe is fixedly connected to a mounting plate, the bottom of the mounting plate is provided with a mounting mechanism, the first connecting pipe is connected to a pressure control mechanism, the mounting mechanism comprises a mounting groove, the mounting groove is provided in the mounting plate, a slider is slidably connected in the mounting groove, one side of the slider is fixedly connected to a telescopic rod, the other end of the telescopic rod is fixedly connected to one side of an inner cavity of the mounting groove, a spring is fixedly sleeved on the telescopic rod, one end of the spring is fixedly connected to the slider, the other end of the spring is fixedly connected to one side of the inner cavity of the mounting groove, one side of the slider is fixedly connected to a mounting block, a mounting hole is provided on the mounting block, and a thread is provided in the mounting hole.

[0009] Preferably, the pressure control mechanism includes a valve body, to which is connected an overflow valve, to which is connected a low-pressure side shuttle valve, one side of the first connecting pipe is connected to a water inlet, and the other side of the first connecting pipe is connected to a water outlet.

[0010] Preferably, the relief valve is connected to a pressure inlet, and the relief valve is connected to a fuel tank port.

[0011] The direct-acting relief valve is a normally closed pressure limiting valve that can protect hydraulic components to prevent them from being impacted by transient pressure. When the pressure at the pressure inlet reaches the valve setting value, the valve begins to overflow to the tank port, throttling to limit the pressure rise. The adjustment is smooth, the noise is low, there is basically no leakage, it has strong resistance to oil pollution, is anti-clogging and has a fast response speed.

[0012] Preferably, the low-pressure side shuttle valve is connected to a first working port, the low-pressure side shuttle valve is connected to a second working port, and the low-pressure side shuttle valve is connected to a nose tip port.

[0013] In this way, the hot oil on the low-pressure side of the closed oil circuit system can be evacuated. When the pressures of the two working ports are equal, all the oil ports of this valve are blocked in the middle position. When any one of the two working ports is at a higher pressure, the other port will be connected to the public port, thereby evacuating the hot oil in time.

[0014] Preferably, sealing rings are connected to both sides of the valve body.

[0015] Such an arrangement can simultaneously improve the sealing performance of the device, thereby enhancing the use effect of the device.

[0016] Preferably, flanges are connected to both sides of the first connecting pipe.

[0017] This arrangement facilitates the installation and maintenance of the device.

[0018] (III) Beneficial effects

[0019] Compared with the prior art, the utility model provides a two-position three-way solenoid valve, which has the following beneficial effects:

[0020] 1. This two-position three-way solenoid valve uses an installation mechanism to pull the slider to move the mounting block fixedly connected to the slider, thereby pulling the mounting block out of the mounting plate, and then facilitating the installation of the device through bolts. After disassembly, the slider is loosened, and the spring drives the slider to reset, thereby driving the mounting block to move into the mounting plate, thereby avoiding damage to the mounting block and reducing the space occupied by the device.

[0021] 2. This two-position three-way solenoid valve uses a pressure control mechanism. When the pressures of the two working ports opened on the low-pressure side shuttle valve are equal, all the oil ports of this valve are blocked in the middle position. When any one of the two working ports is at a higher pressure, the other port will be connected to the common port, so that the hot oil can be evacuated in time. The relief valve is a normally closed pressure limiting valve, which can protect the hydraulic components to prevent them from being impacted by transient pressure. When the pressure at the pressure inlet reaches the set value of the valve, the valve begins to overflow to the tank port, throttling to limit the pressure rise. The adjustment is smooth, the noise is small, there is basically no leakage, the oil pollution resistance is strong, the blockage is prevented and the response speed is fast, so that the return oil back pressure can be set according to the customer's pressure requirements. In addition, this valve group is a plate-type installation structure to reduce the pipeline installation space. The valve core of the low-pressure side shuttle valve adopts a hydraulic system to eliminate mechanical shock and prevent potential internal damage. Hydraulic braking requires a small amount of oil to flow to the common port from the high-pressure side oil port. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 It is a front view of the utility model;

[0024] Figure 2 It is a structural schematic diagram of the utility model;

[0025] Figure 3 for Figure 2 A magnified view of part A;

[0026] Figure 4 It is a structural schematic diagram of the overflow valve in the utility model;

[0027] Figure 5 It is a structural schematic diagram of the medium and low pressure side shuttle valve of the utility model.

[0028] In the figure: 1. first connecting pipe; 2. second connecting pipe; 3. mounting plate; 4. mounting mechanism; 41. mounting groove; 42. slider; 43. telescopic rod; 44. spring; 45. mounting block; 46. mounting hole; 5. pressure control mechanism; 51. overflow valve; 52. low-pressure side shuttle valve; 53. water inlet; 54. water outlet; 55. valve body; 511. pressure inlet; 512. oil tank port; 521. first working port; 522. second working port; 523. nose tip port. DETAILED DESCRIPTION

[0029] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all of the embodiments.

[0030] Example 1

[0031] like Figure 1-5 As shown, the utility model provides a two-position three-way solenoid valve, including a first connecting pipe 1, one side of the first connecting pipe 1 is connected to the second connecting pipe 2, the bottom of the second connecting pipe 2 is fixedly connected to a mounting plate 3, the bottom of the mounting plate 3 is provided with a mounting mechanism 4, the first connecting pipe 1 is connected with a pressure control mechanism 5, the mounting mechanism 4 includes a mounting groove 41, the mounting groove 41 is opened in the mounting plate 3, a slider 42 is slidably connected in the mounting groove 41, a telescopic rod 43 is fixedly connected to one side of the inner cavity of the mounting groove 41, the other end of the telescopic rod 43 is fixedly connected to one side of the inner cavity of the mounting groove 41, a spring 44 is fixedly sleeved on the telescopic rod 43, one end of the spring 44 is fixedly connected to the slider 42, the other end of the spring 44 is fixedly connected to one side of the inner cavity of the mounting groove 41, one side of the slider 42 is fixedly connected to a mounting block 45, a mounting hole 46 is opened on the mounting block 45, and a thread is provided in the mounting hole 46.

[0032] In this embodiment, sealing rings are connected to both sides of the valve body 55, which can improve the sealing performance of the device and enhance the use effect of the device. Flanges are connected to both sides of the first connecting pipe 1, which facilitates the installation and maintenance of the device.

[0033] Example 2

[0034] like Figure 1-5 As shown, based on Example 1, the utility model provides a technical solution: preferably, the pressure control mechanism 5 includes a valve body 55, an overflow valve 51 is connected to the valve body 55, a low-pressure side shuttle valve 52 is connected to the valve body 55, one side of the first connecting pipe 1 is connected to a water inlet 53, and the other side of the first connecting pipe 1 is connected to a water outlet 54.

[0035] In this embodiment, the relief valve 51 is connected to a pressure inlet 511, and the relief valve 51 is connected to an oil tank port 512. The direct-acting relief valve 51 is a normally closed pressure limiting valve, which can protect the hydraulic components to prevent them from being impacted by transient pressure. When the pressure at the pressure inlet 511 reaches the set value of the valve, the valve begins to overflow to the oil tank port 512, and throttling is used to limit the pressure rise. The regulation is smooth, the noise is small, and there is basically zero leakage. The low-pressure side shuttle valve 52 is strong in oil pollution resistance, anti-blocking and fast response speed. The low-pressure side shuttle valve 52 is connected to a first working port 521, the low-pressure side shuttle valve 52 is connected to a second working port 522, and the low-pressure side shuttle valve 52 is connected to a nose tip port 523, so that the hot oil on the low-pressure side of the closed oil circuit system can be evacuated. When the pressures of the two working ports are equal, all the oil ports of this valve are blocked in the middle position. When any one of the two working ports is at a higher pressure, the other port will be connected to the common port, so that the hot oil can be evacuated in time.

[0036] The following is a detailed description of the working principle of this two-position three-way solenoid valve.

[0037] like Figure 1-5 As shown, when in use, the slider 42 is pulled to move the mounting block 45 fixedly connected to the slider 42, thereby pulling the mounting block 45 out of the mounting plate 3, and then the installation of the device is facilitated by bolts. After disassembly, the slider 42 is loosened, and the spring 44 drives the slider 42 to reset, thereby driving the mounting block 45 to move into the mounting plate 3, thereby avoiding damage to the mounting block 45 and reducing the footprint of the device. When the pressures of the two working ports opened on the low-pressure side shuttle valve 52 are equal, all the oil ports of this valve are blocked in the middle position. When any one of the two working ports is at a higher pressure, the other port will be connected to the common port, thereby evacuating the hot oil in time. The relief valve 51 is a normally closed pressure limiting valve, which can protect the hydraulic components to prevent them from being impacted by transient pressure. When the pressure is at the pressure inlet 511 When the valve setting value is reached, the valve begins to overflow to the tank port 512, and throttling is performed to limit the pressure rise. The adjustment is smooth, the noise is low, there is basically no leakage, the oil pollution resistance is strong, the blockage is prevented, and the response speed is fast, so that the return oil back pressure can be set according to the customer's pressure requirements. This valve group has a plate-type installation structure to reduce the pipeline installation space. The valve core of the low-pressure side shuttle valve 52 adopts a hydraulic system to eliminate mechanical shock and prevent potential internal damage. Hydraulic braking requires a small amount of oil to flow from the high-pressure side oil port to the common port.

Claims

1. A two-position three-way solenoid valve, comprising a first connecting pipe (1), characterized in that: One side of the first connecting tube (1) is connected to the second connecting tube (2); the bottom of the second connecting tube (2) is fixedly connected to a mounting plate (3); a mounting mechanism (4) is provided at the bottom of the mounting plate (3); a pressure control mechanism (5) is connected inside the first connecting tube (1); the mounting mechanism (4) comprises a mounting groove (41); the mounting groove (41) is provided in the mounting plate (3); a sliding block (42) is slidably connected inside the mounting groove (41); one side of the sliding block (42) is fixedly connected to A telescopic rod (43), the other end of the telescopic rod (43) being fixedly connected to one side of the inner cavity of the mounting groove (41), a spring (44) being fixedly sleeved on the telescopic rod (43), one end of the spring (44) being fixedly connected to the slider (42), the other end of the spring (44) being fixedly connected to one side of the inner cavity of the mounting groove (41), a mounting block (45) being fixedly connected to one side of the slider (42), a mounting hole (46) being provided on the mounting block (45), and a thread being provided in the mounting hole (46).

2. A two-position three-way solenoid valve according to claim 1, characterized in that: The pressure control mechanism (5) comprises a valve body (55), the valve body (55) is connected to a relief valve (51), the valve body (55) is connected to a low-pressure side shuttle valve (52), one side of the first connecting pipe (1) is connected to a water inlet (53), and the other side of the first connecting pipe (1) is connected to a water outlet (54).

3. A two-position three-way solenoid valve according to claim 2, characterized in that: The relief valve (51) is connected to a pressure inlet (511), and the relief valve (51) is connected to an oil tank port (512).

4. A two-position three-way solenoid valve according to claim 2, characterized in that: The low-pressure side shuttle valve (52) is connected to a first working port (521), the low-pressure side shuttle valve (52) is connected to a second working port (522), and the low-pressure side shuttle valve (52) is connected to a nose tip port (523).

5. A two-position three-way solenoid valve according to claim 2, characterized in that: Sealing rings are connected to both sides of the valve body (55).

6. A two-position three-way solenoid valve according to claim 1, characterized in that: Flanges are connected to both sides of the first connecting pipe (1).

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