Pressurized double-tube electromagnetic valve used on medical instrument

Abstract

The utility model discloses an under-pressure double-pipe electromagnetic valve used on a medical instrument, which comprises a control pipeline assembly and an electromagnet assembly and is characterized in that the control pipeline assembly comprises a valve head, a sliding block and a pipeline groove, and the electromagnet assembly comprises a coil assembly, a round iron pipe, a fixed iron core, a movable iron core and a spring. The valve can be used for multiple purposes, the assembly procedures are reduced, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of electromagnetic valves, in particular to a pressure-controlled double-tube electromagnetic valve used in medical instruments. Background Art

[0002] Solenoid valves are widely used due to their advantages such as controllable volume and sensitive response. They are widely used in equipment in various industries and are also widely used in the medical field. At present, solenoid valves for controlling pipelines in the medical field are very common, but the existing technology has various problems: 1. It can only control one pipeline and has a single function; 2. The complex structure increases the difficulty of assembly and production costs.

[0003] The utility model can control two pipelines by improving the structure, realizes multiple uses of one valve, simplifies the structure, reduces the difficulty of assembly and the production cost. Summary of the invention

[0004] 1. Technical problems to be solved

[0005] In view of the deficiencies of the prior art, the utility model provides a pressurized double-tube solenoid valve used in medical instruments, which solves the problems of single function, difficult assembly, complicated procedures and high production costs mentioned in the above background technology.

[0006] (2) Technical solution

[0007] To achieve the above purpose, the utility model is implemented through the following technical solutions: a double-tube solenoid valve with pressure used in medical instruments, including a control pipeline assembly, an electromagnet assembly, characterized in that the control pipeline assembly includes a valve head, a slider, and a pipeline groove, the electromagnet assembly includes a coil assembly, a round iron pipe, a fixed iron core, a movable iron core, and a spring, the coil assembly is loaded into the round iron pipe, the fixed iron core is fixedly connected to one end of the round iron pipe by riveting, one end of the movable iron core is provided with a groove, the spring is loaded into the groove of the movable iron core, the other end of the movable iron core is provided with an internal thread groove, one end of the slider is provided with a thread matching the internal thread groove at the other end of the movable iron core, the two are fixedly connected by thread locking, the other end of the slider is provided with a pressing rod, the assembly of the slider, the movable iron core and the spring is inserted into the coil assembly through the other end of the round iron pipe to resist the fixed iron core, one end of the pressing rod of the slider is inserted into the valve head, and the valve head is fixed to the other end of the round iron pipe by screw connection.

[0008] Preferably, one end of the spring is inserted into the groove of the movable iron core, and the other end extends out of the groove of the movable iron core.

[0009] Preferably, the coil assembly includes a bobbin, an enameled wire and an electric conductor, the enameled wire is wound on the bobbin, the electric conductor is electrically connected to the enameled wire, and the electric conductor is connected to an external power source through a through hole provided on the fixed iron core.

[0010] Preferably, the valve head is made of plastic and is integrally formed by a mold.

[0011] Preferably, the valve head is provided with two pipeline grooves, and the pipeline grooves include pipeline groove one and pipeline groove two.

[0012] Preferably, the pipeline groove is in the shape of a circular hole at one end inside the valve head and extends from the circular hole opening to the outside of the valve head in a flat shape.

[0013] Preferably, the wire pressing rod is located between pipeline groove one and pipeline groove two.

[0014] (III) Beneficial effects.

[0015] The utility model provides a pressure-controlled double-tube solenoid valve used in medical instruments, which has the following beneficial effects:

[0016] 1. There are two pipeline grooves on the valve head, which can achieve multiple uses of one valve.

[0017] 2. The two pipelines play the role of the positioning pins in the prior art. The elimination of the positioning pins reduces the assembly process and reduces the production cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model.

[0019] Figure 2 It is a cross-sectional schematic diagram of the utility model.

[0020] Figure 3 This is a schematic diagram of the shape of the pipeline trough of the utility model.

[0021] In the figure: 1. control pipeline assembly; 2. electromagnet assembly; 11. valve head; 12. slider; 13. pipeline trough; 121. wire pressing rod; 131. pipeline trough 1; 132. pipeline trough 2; 21. coil assembly; 211. bobbin; 212. enameled wire; 213. electric wire; 22. round iron pipe; 23. fixed iron core; 24. movable iron core; 25. spring. DETAILED DESCRIPTION

[0022] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in 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.

[0023] See also Figure 1-Figure 3 The utility model provides a pressure double-tube solenoid valve used in medical instruments, including a control pipeline assembly, an electromagnet assembly, and is characterized in that the control pipeline assembly includes a valve head, a slider, and a pipeline groove, the electromagnet assembly includes a coil assembly, a round iron pipe, a fixed iron core, a movable iron core, and a spring, the coil assembly is installed in the round iron pipe, the fixed iron core and one end of the round iron pipe are fixedly connected by an inverted riveting method, so that the two are not easy to fall off, one end of the movable iron core is provided with a groove, the shape of the groove matches the spring, the spring is installed in the groove of the movable iron core, the other end of the movable iron core is provided with an internal thread groove, one end of the slider is provided with a thread matching the internal thread groove at the other end of the movable iron core, the two are fixedly connected by a thread locking method, the assembly of the slider, the movable iron core and the spring is inserted into the coil assembly through the other end of the round iron pipe to resist the fixed iron core, one end of the pressing rod of the slider is inserted into the valve head, and the valve head and the other end of the round iron pipe are fixed by screw connection.

[0024] One end of the spring is inserted into the movable iron core groove, and the other end extends out of the movable iron core groove.

[0025] The coil assembly comprises a bobbin, an enameled wire and an electric conductor. The enameled wire is wound on the bobbin, the electric conductor is electrically connected to the enameled wire, and the electric conductor is connected to an external power source through a through hole provided on the fixed iron core.

[0026] The valve head is made of plastic and is integrally formed by a mold.

[0027] The valve head is provided with two pipeline grooves, which include pipeline groove one and pipeline groove two.

[0028] The pipeline groove is in a circular hole shape at one end inside the valve head and extends from the circular hole opening to the outside of the valve head in a flat shape.

[0029] The slide block is provided with a wire pressing rod, and the wire pressing rod is located between the first pipeline groove and the second pipeline groove.

[0030] When the utility model is working, when the electromagnetic valve is powered off, the elastic force of the spring causes the movable iron core to move away from the fixed iron core, driving the wire pressing rod on the slider to press the pipeline in the pipeline groove one, so that the liquid or gas in the pipeline in the pipeline groove one stops flowing; when the electromagnetic valve is powered on, the movable iron core overcomes the elastic force of the spring due to the magnetism of the coil assembly, the movable iron core is connected to the fixed iron core, driving the wire pressing rod on the slider to move toward the pipeline groove two on the valve head, pressing the pipeline in the pipeline groove two, so that the liquid or gas in the pipeline in the pipeline groove two stops flowing, and at this time the liquid or gas in the pipeline in the pipeline groove one resumes flowing.

[0031] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A pressure-controlled double-tube solenoid valve used in medical instruments, comprising a control pipeline assembly (1), an electromagnet assembly (2), Features: The control pipeline assembly (1) comprises a valve head (11), a slider (12), and a pipeline groove (13); the electromagnet assembly (2) comprises a coil assembly (21), a round iron tube (22), a fixed iron core (23), a movable iron core (24), and a spring (25); the coil assembly (21) is inserted into the round iron tube (22); the fixed iron core (23) is fixedly connected to one end of the round iron tube (22) by riveting; one end of the movable iron core (24) is provided with a groove; the spring (25) is inserted into the groove of the movable iron core (24); the other end of the movable iron core (24) is provided with an internal thread groove A groove is formed on one end of the slider (12) and matches the internal thread groove on the other end of the movable iron core (24). The two are fixedly connected by means of thread locking. A wire pressing rod (121) is provided on the other end of the slider (12). The assembly of the slider (12), the movable iron core (24) and the spring (25) is inserted into the coil assembly (21) through the other end of the round iron tube (22) to abut against the fixed iron core (23). One end of the wire pressing rod (121) of the slider (12) is inserted into the valve head (11). The valve head (11) and the other end of the round iron tube (22) are fixedly connected by screws.

2. A pressure-controlled double-tube solenoid valve used in medical instruments according to claim 1, Features: One end of the spring (25) is inserted into the groove of the movable iron core (24), and the other end extends out of the groove of the movable iron core (24).

3. A pressure-controlled double-tube solenoid valve used in medical instruments according to claim 1, Features: The coil assembly (21) comprises a bobbin (211), an enameled wire (212), and an electric conductor (213); the enameled wire (212) is wound on the bobbin (211); the electric conductor (213) is electrically connected to the enameled wire; and the electric conductor (213) is connected to an external power source via a through hole provided on the fixed iron core (23).

4. A pressure-controlled double-tube solenoid valve used in medical instruments according to claim 1, Features: The valve head (11) is made of plastic and is integrally formed by a mold.

5. A pressure-controlled double-tube solenoid valve used in medical instruments according to claim 1, Features: The valve head (11) is provided with two pipeline grooves (13), and the pipeline grooves (13) include a pipeline groove 1 (131) and a pipeline groove 2 (132).

6. A pressure-controlled double-tube solenoid valve used in medical instruments according to claim 1 or 5, Features: The pipeline groove (13) is in the shape of a circular hole at one end inside the valve head (11) and extends from the circular hole opening to the outside of the valve head (11) in a flat shape.

7. A pressure-controlled double-tube solenoid valve used in medical instruments according to claim 1, Features: The wire pressing rod (121) is located between the first pipeline groove (131) and the second pipeline groove (132).

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