Irrigation electromagnetic valve driven by wax material

Abstract

The utility model provides an irrigation electromagnetic valve driven by wax materials, and relates to the technical field of electromagnetic valves. The utility model is used for solving the technical problems that the electromagnetic driving structure of the movable iron core of the existing AC electromagnetic head is complicated, the coil is overheated and burnt when the movable iron core is blocked by foreign matters, and the switching action is invalid. An irrigation electromagnetic valve driven by wax materials comprises a water passing pipeline, a water passing through pipe and a large nut sleeve, the water passing through pipe is installed in the water passing pipeline, and the large nut sleeve is installed on the water passing pipeline. Paraffin is heated through the PTC heating piece, the paraffin melts into liquid and expands, then the rubber sleeve is extruded to push the push rod to slide towards the outer portion of the threaded sleeve, the push rod drives the piston to slide towards the water passing through pipe and close to the water passing through pipe for blocking so as to cut off water flow, when the PTC heating piece stops heating, water continues to circulate, and the structure is simple and reliable.

Description

Technical Field

[0001] The utility model provides an irrigation solenoid valve driven by a wax material, and relates to the technical field of solenoid valves. Background Art

[0002] Solenoid valves are industrial equipment controlled by electromagnetics. They are basic components for controlling fluid automation and belong to actuators, not limited to hydraulic and pneumatic. They are used in industrial control systems to adjust the direction, flow, speed and other parameters of the medium. Solenoid valves can be used with different circuits to achieve the desired control, and the accuracy and flexibility of the control can be guaranteed.

[0003] At present, the mainstream irrigation solenoid valve generally adopts the AC electromagnet driving principle: the moving iron core closes the pilot cavity outlet through the spring force under the condition of no power, resulting in the pilot cavity having only the water inlet channel and no water outlet channel. In this way, the main pipeline diaphragm blocks the water inlet and outlet channels under the action of water pressure, achieving the purpose of closing the valve; when the coil is energized, the energized coil generates electromagnetic force, attracting the moving iron core to move and keep it in a certain position, opening the pilot cavity drain port, causing the pilot cavity pressure to decrease, causing the main pipeline diaphragm to float up and open the water inlet and outlet channels, thus achieving the purpose of opening the valve. The existing AC electromagnetic head moving iron core electromagnetic drive structure is complex, heats up, and the electromagnetic force generation efficiency is low. At the same time, it is accompanied by large AC noise, and the electromagnetic force generated is relatively small. Under certain conditions, if the moving iron core is blocked by foreign objects, it will cause the coil to overheat and burn, and the switch action will fail.

[0004] Therefore, it is necessary to provide an irrigation solenoid valve driven by wax material with a simple and reliable structure. Summary of the invention

[0005] In order to overcome the shortcomings of the existing AC electromagnetic head moving iron core electromagnetic drive structure being complex, and the coil being overheated and burned and the switch action failing if the moving iron core is blocked by foreign matter, the utility model provides an irrigation solenoid valve driven by a wax material with a simple and reliable structure.

[0006] In order to achieve the above-mentioned purpose, the embodiment of the utility model provides the following technical solutions: an irrigation solenoid valve driven by a wax material, comprising a water pipe, a water through pipe and a large nut sleeve, a water through pipe is installed in the water pipe, a large nut sleeve is installed on the water pipe, and also comprising a solenoid valve housing, a mounting seat, a piston, an elastic member, a push rod, a threaded sleeve, a rubber sleeve, paraffin and a PTC heating sheet, a mounting seat is installed on the water pipe, the solenoid valve housing is installed on the mounting seat, a threaded sleeve is threadedly arranged in the mounting seat, a push rod is slidably arranged in the threaded sleeve, a piston is slidably arranged in the mounting seat, the piston is fixedly connected to the push rod, an elastic member is wound around the piston, and both ends of the elastic member are respectively connected to the piston and the mounting seat, the threaded sleeve is filled with paraffin, a rubber sleeve is installed in the threaded sleeve, the rubber sleeve separates the paraffin and the push rod, and a PTC heating sheet is installed on the threaded sleeve.

[0007] Furthermore, the rubber sleeve is made of heat-resistant rubber material.

[0008] Furthermore, it also includes a water inlet nut threadedly arranged in the large nut sleeve, and the inner sleeve of the water inlet nut is provided with a frog eye ring.

[0009] Furthermore, a sealing ring is sleeved on the mounting seat, and the sealing ring is located between the mounting seat and the solenoid valve housing.

[0010] Furthermore, an inner plug is provided in the water pipe and the large nut sleeve.

[0011] Furthermore, a filter screen is embedded in the large nut sleeve, and the filter screen is located between the large nut sleeve and the water inlet nut.

[0012] Compared with the prior art, the solenoid valve provided by the embodiment of the utility model has the following advantages: 1. The paraffin is heated by the PTC heating sheet, and the paraffin melts into liquid and expands, thereby squeezing the rubber sleeve to push the push rod to slide outside the threaded sleeve. The push rod drives the piston to slide toward the water passage and seal it to cut off the water flow. When the PTC heating sheet stops supplying heat, the water continues to flow. The structure is simple and reliable.

[0013] 2. By threading the water inlet nut onto the water inlet pipe, and sealing the water inlet nut and the water inlet pipe through the frog eye ring, and then threading the water inlet nut into the large nut sleeve, the water inlet pipe and the water pipeline are connected, thus achieving the effect of quickly connecting the water inlet pipe. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is a three-dimensional structural schematic diagram of the utility model.

[0015] Figure 2 It is a three-dimensional cross-sectional structural schematic diagram of the filter screen, the mounting seat and the sealing ring of the utility model.

[0016] Figure 3 The utility model is a three-dimensional cross-sectional structural schematic diagram of the piston, push rod and threaded sleeve.

[0017] Figure 4 The utility model is a three-dimensional cross-sectional structural schematic diagram of the piston, push rod and threaded sleeve.

[0018] Figure numbers: 1: water pipe, 101: water pipe, 2: large nut sleeve, 3: inner plug, 4: water inlet nut, 5: frog eye ring, 6: solenoid valve housing, 7: filter screen, 8: mounting seat, 9: sealing ring, 10: piston, 11: elastic part, 12: push rod, 13: threaded sleeve, 14: rubber sleeve, 1401: paraffin, 15: PTC heating sheet. DETAILED DESCRIPTION

[0019] The utility model is described in detail below in conjunction with the accompanying drawings.

[0020] Embodiment 1: A wax material driven irrigation solenoid valve, see Figure 1-Figure 4 As shown, it includes a water pipe 1, a water pipe 101 and a large nut sleeve 2. The water pipe 1 is installed with the water pipe 101 by welding. The large nut sleeve 2 is installed on the top of the water pipe 1 by bolt connection. It also includes a solenoid valve housing 6, a mounting seat 8, a piston 10, an elastic member 11, a push rod 12, a threaded sleeve 13, a rubber sleeve 14, paraffin 1401 and a PTC heating sheet 15. The side of the water pipe 1 is installed with a mounting seat 8 by bolt connection. The solenoid valve housing 6 is installed on the mounting seat 8 by bolt connection. The mounting seat 8 is provided with a threaded sleeve 13 in a threaded manner. The push rod 12 is horizontally slidably arranged in the threaded sleeve 13. The mounting seat 8 is provided with a useful The piston 10 is used to block the water passage 101. The piston 10 is fixedly connected to the push rod 12 by bonding. An elastic member 11 is wound around the piston 10. The two ends of the elastic member 11 are respectively connected to the piston 10 and the mounting seat 8. The elastic member 11 is used to push the piston 10 to slide and reset into the mounting seat 8. The threaded sleeve 13 is filled with paraffin 1401. A rubber sleeve 14 is installed in the threaded sleeve 13 by bonding. The rubber sleeve 14 is made of heat-resistant rubber material to avoid being burned and deformed by the high temperature of the paraffin 1401. The rubber sleeve 14 separates the paraffin 1401 from the push rod 12. The side of the threaded sleeve 13 away from the piston 10 is installed with a PTC heating plate 15 for heating the paraffin 1401 by bolt connection.

[0021] After the water pipe 1 is connected to the water source, when it is necessary to block the connection between the water pipe 1 and the water passage pipe 101, the PTC heating sheet 15 is started for heating, and the heat is transferred to the paraffin 1401 through the threaded sleeve 13. At this time, the paraffin 1401 melts into liquid. As the temperature gradually rises, the paraffin 1401 expands, and then squeezes the rubber sleeve 14 to deform toward the opening side of the threaded sleeve 13. The rubber sleeve 14 pushes the push rod 12 to slide toward the outside of the threaded sleeve 13, and the push rod 12 drives the piston 10 to approach the water passage pipe 101 and seal it. At this time, the elastic member 11 is compressed by force The piston 10 is deformed, and the connection between the water pipe 1 and the water passage 101 is cut off, and the irrigation water cannot pass through, that is, the irrigation water is stopped from being transported; when the water pipe 1 is to be connected to the water passage 101 again, the PTC heating sheet 15 is closed, and the paraffin 1401 loses the heat supply, and the paraffin 1401 gradually shrinks. At this time, the elastic member 11 returns to its original state and pushes the piston 10 to slide back to its original state, so that the piston 10 is separated from the water passage 101, and the push rod 12 pushes the rubber sleeve 14 to recover, and as the heat on the paraffin 1401 is gradually lost, the paraffin 1401 solidifies into a solid state.

[0022] Example 2: Based on Example 1, refer to Figure 2 As shown, it also includes a water inlet nut 4 threadedly arranged in the large nut sleeve 2, the water inlet nut 4 is used to connect the water inlet pipe, and the water inlet nut 4 is sleeved with a frog eye ring 5 for sealing the connection with the water inlet pipe.

[0023] When the water pipe 1 needs to be connected to the water inlet pipe, the water inlet nut 4 is threadedly connected to the water inlet pipe. At this time, the frog eye ring 5 seals the water inlet nut 4 and the water inlet pipe to prevent water leakage. The water inlet nut 4 is then threadedly connected to the large nut sleeve 2 to complete the connection between the water inlet pipe and the water pipe 1.

[0024] See also Figure 2 As shown, a sealing ring 9 is provided on the mounting seat 8, and the sealing ring 9 is located between the mounting seat 8 and the solenoid valve housing 6; an inner plug 3 for preventing water leakage is provided in the water pipe 1 and the large nut sleeve 2; a filter screen 7 for filtering impurities in the water is embedded in the large nut sleeve 2, and the filter screen 7 is located between the large nut sleeve 2 and the water inlet nut 4.

[0025] The sealing ring 9 is used to strengthen the connection tightness between the solenoid valve housing 6 and the mounting seat 8 to prevent leakage of the internal lubricating oil; the inner plug 3 is used to close the gap between the water pipe 1 and the large nut sleeve 2 to prevent leakage when water passes through; the filter net 7 is used to filter impurities in the water to avoid clogging the water pipe 1.

[0026] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, ordinary technicians in this field should understand that they can still modify the technical solutions recorded in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not make the essence of the corresponding technical solution deviate from the scope of the technical solution of the embodiments of the utility model.

Claims

1. An irrigation solenoid valve driven by wax material, comprising a water pipe (1), a water pipe (101) and a large nut sleeve (2), wherein the water pipe (101) is installed in the water pipe (1), and the large nut sleeve (2) is installed on the water pipe (1), characterized in that: The invention also comprises a solenoid valve housing (6), a mounting seat (8), a piston (10), an elastic member (11), a push rod (12), a threaded sleeve (13), a rubber sleeve (14), paraffin (1401) and a PTC heating sheet (15). The mounting seat (8) is mounted on the water pipe (1), the solenoid valve housing (6) is mounted on the mounting seat (8), the mounting seat (8) is internally threadedly provided with a threaded sleeve (13), the threaded sleeve (13) is slidably provided with a push rod (12), and the mounting seat (8) is internally threadedly provided with a threaded sleeve (13). A piston (10) is provided in a sliding manner, the piston (10) is fixedly connected to a push rod (12), an elastic member (11) is wound around the piston (10), two ends of the elastic member (11) are respectively connected to the piston (10) and a mounting seat (8), a threaded sleeve (13) is filled with paraffin (1401), a rubber sleeve (14) is installed in the threaded sleeve (13), the rubber sleeve (14) separates the paraffin (1401) from the push rod (12), and a PTC heating sheet (15) is installed on the threaded sleeve (13).

2. The wax material driven irrigation solenoid valve according to claim 1, characterized in that: The rubber sleeve (14) is made of heat-resistant rubber material.

3. The wax material driven irrigation solenoid valve according to claim 1, characterized in that: It also includes a water inlet nut (4) threadedly arranged in the large nut sleeve (2), and a frog eye ring (5) is provided inside the water inlet nut (4).

4. The wax material driven irrigation solenoid valve according to claim 1, characterized in that: A sealing ring (9) is sleeved on the mounting seat (8), and the sealing ring (9) is located between the connection between the mounting seat (8) and the solenoid valve housing (6).

5. The wax material driven irrigation solenoid valve according to claim 1, characterized in that: An inner plug (3) is provided in the water pipe (1) and the large nut sleeve (2).

6. The wax material driven irrigation solenoid valve according to claim 3, characterized in that: A filter screen (7) is embedded in the large nut sleeve (2), and the filter screen (7) is located between the large nut sleeve (2) and the water inlet nut (4).

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