Electromagnetic door closer and electromagnetic valve thereof

Abstract

The electromagnetic valve comprises an end cover, a valve element and an electromagnet, the end cover is detachably arranged on the electromagnetic door closer, the valve element is connected to the end cover in a sliding mode, the electromagnet is connected to the valve element in a driving mode, a control flow channel is formed in the end cover, and the valve element is arranged in the control flow channel in a sliding mode. And the valve is used for opening or closing the control flow channel. The electromagnetic door closer and the electromagnetic valve thereof are simple in structure, and the electromagnetic valve and the end cover of the electromagnetic door closer are modularly arranged and are convenient to disassemble and assemble.

Description

Technical Field

[0001] The present application relates to the technical field of door closers, and in particular to an electromagnetic door closer and an electromagnetic valve thereof. Background Art

[0002] Door closers, as necessary facilities in modern buildings, have been widely used in various fields of society. With the continuous development and progress of society, the country has higher and higher requirements for fire protection and security. Many passage doors and fire doors need to be installed with door closers. Among them, hydraulic door closers achieve buffering by throttling the liquid in the door closer, and stop the door at an open position through solenoid valve control. It can be automatically closed when a fire alarm signal or control signal is received. The installation position of the solenoid valve needs to be preset in the shell, and the flow channel in the shell needs to be set according to the flow channel of the solenoid valve, which makes processing difficult. Therefore, improvements are needed. Utility Model Content

[0003] The utility model aims to provide an electromagnetic door closer and an electromagnetic valve thereof which have a simple structure and do not require destructive processing, so as to overcome the deficiencies in the prior art.

[0004] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0005] The embodiment of the present application discloses an electromagnetic door closer and an electromagnetic valve thereof, comprising:

[0006] An end cover, wherein a control flow channel is disposed in the end cover;

[0007] A valve core, the valve core is slidably disposed in the control flow channel and is used to open or close the control flow channel;

[0008] The electromagnet is driven and connected to the valve core.

[0009] Furthermore, in the above-mentioned solenoid valve, the control flow channel includes a first flow channel arranged axially along the end cover and a second flow channel arranged radially along the end cover, the valve core is slidably arranged in the first flow channel, one end of the second flow channel passes through the end cover, and the other end is connected to the first flow channel.

[0010] Furthermore, in the above-mentioned solenoid valve, a first sealing groove and a connecting groove are respectively provided at both ends of the first flow channel, a first sealing ring is provided in the first sealing groove, and an end of the electromagnet close to the end cover is sealed and connected to the connecting groove.

[0011] Furthermore, in the above-mentioned solenoid valve, the valve core includes a sealing end, a yield shaft, a connecting shaft and a hanging platform arranged in sequence, the diameter of the sealing end is larger than the inner diameter of the first sealing ring, and the diameter of the yield shaft is smaller than the inner diameter of the first sealing ring.

[0012] Furthermore, in the above-mentioned solenoid valve, the electromagnet is assembled and disassembled in the connecting groove via a mounting column, a blind hole is provided at one end of the mounting column close to the end cover, and the valve core is slidably disposed in the blind hole via a limit block.

[0013] Furthermore, in the above-mentioned solenoid valve, a limiting hole corresponding to the connecting shaft and the hanging platform is arranged in the limiting block, and a first spring is arranged between an end of the hanging platform away from the end cover and a corresponding inner wall of the blind hole.

[0014] Furthermore, in the above-mentioned solenoid valve, a second sealing ring is arranged between the outer wall of the mounting column and the inner wall of the connecting groove.

[0015] The embodiment of the present application also discloses an electromagnetic door closer, including a hollow shell, a piston slidably arranged in the shell, sealing end covers arranged at both ends of the shell, and an electromagnetic valve, wherein the electromagnetic valve is the above-mentioned electromagnetic valve, a second spring is arranged between the piston and the end cover, a third sealing ring is arranged between the outer wall of the piston and the inner wall of the shell, a door closing flow channel is arranged in the shell, and the two ends of the door closing flow channel are respectively located on both sides of the third sealing ring, and one end close to the electromagnetic valve is connected to the control flow channel.

[0016] Furthermore, in the above-mentioned electromagnetic door closer, an annular groove is concavely provided on the surface of the end cover for connecting the control flow channel and the door closing flow channel, and a fourth sealing ring and a fifth sealing ring are respectively provided on both sides of the annular groove.

[0017] Furthermore, in the above-mentioned electromagnetic door closer, a door opening flow channel is provided in the piston, and a pressure relief valve and a one-way valve are respectively provided at both ends of the door opening flow channel.

[0018] Compared with the prior art, the electromagnetic door closer and its electromagnetic valve of the utility model have simple structures, the electromagnetic valve and the corresponding side end cover of the door closer are integrated into one, which is convenient for processing and installation, the valve core is bidirectionally driven by the electromagnet and the first spring, and the opening speed is stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0020] Figure 1 The figure shows the power-on state of the solenoid valve according to a specific embodiment of the utility model.

[0021] Figure 2The figure shows the power-off state of the solenoid valve according to a specific embodiment of the utility model.

[0022] Figure 3 Shown is an internal schematic diagram of an electromagnetic door closer according to a specific embodiment of the utility model.

[0023] Figure 4 Shown is a schematic diagram of the use of an electromagnetic door closer according to a specific embodiment of the utility model. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to describe the technical solutions in the embodiments of the utility model in detail. Obviously, the described embodiments are only 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.

[0025] See also Figure 1 and Figure 2 As shown, a solenoid valve comprises an end cover 1 which can be detached from an electromagnetic door closer, a valve core 2 which is slidably connected to the end cover 1 and an electromagnet 3 which is drive-connected to the valve core 2, a control flow channel 11 is arranged in the end cover 1, and the valve core 2 is slidably arranged in the control flow channel 11 for opening or closing the control flow channel 11.

[0026] In this technical solution, the end cover can directly utilize the end cover of the existing door closer, and the control channel can be processed. One end of the valve core is slidably set in the control channel to open or close the control channel, thereby realizing the function of the solenoid valve controlling the flow of hydraulic oil. It can be directly used in the existing door closer structure, and the structure of the door closer does not need to be changed, which is convenient for processing and installation.

[0027] For example, see Figure 1 and Figure 2 As shown, the control channel 11 includes a first channel 111 axially arranged along the end cover 1 and a second channel 112 radially arranged along the end cover 1. The valve core 2 is slidably arranged in the first channel 111. One end of the second channel 112 passes through the end cover 1, and the other end is connected to the first channel 111.

[0028] In this technical solution, the end cover is a cylindrical structure and is disassembled and assembled to the housing of the door closer through a threaded structure. A force hole is provided on the outer end face to facilitate disassembly and assembly using tools. The first flow channel is arranged along the axial direction of the end cover and is connected to the cavity in the door closer. The second flow channel is arranged along the radial direction of the end cover, that is, a hole is punched from the circumferential surface of the end cover and is connected to the first flow channel, thereby connecting the control flow channel and the closing flow channel of the door closer, and controlling the opening or closing of the first flow channel to control the closing flow channel of the door closer is achieved.

[0029] For example, see Figure 1 and Figure 2 As shown, a first sealing groove and a connecting groove are respectively provided at both ends of the first flow channel 111, a first sealing ring 4 is provided in the first sealing groove, and one end of the electromagnet 3 close to the end cover 1 is sealed and connected to the connecting groove.

[0030] In this technical solution, the sealing groove and the connecting groove are both coaxially arranged with the first flow channel, and threads are processed in the connecting groove to facilitate the disassembly and assembly of the electromagnet and the valve core. During the sliding process of the valve core, the opening and closing of the first sealing ring is realized by changing the cross-sectional area of ​​the valve core, thereby realizing the opening and closing function of the control flow channel; the first sealing groove can be processed into Figure 1 The step groove structure shown in the figure is provided with a bushing to limit the position of the first sealing ring, avoid displacement of the first sealing ring caused by valve core sliding or hydraulic oil flow, etc., and improve the sealing performance. The first sealing groove can also be Figure 2 In the annular groove structure shown, the sealing ring can be directly embedded in the first sealing groove.

[0031] For example, see Figure 1 and Figure 2 As shown, the valve core 2 includes a sealing end 21, a yield shaft 22, a connecting shaft 23 and a hanging platform 24 which are arranged in sequence. The diameter of the sealing end 21 is larger than the inner diameter of the first sealing ring 4, and the diameter of the yield shaft 22 is smaller than the inner diameter of the first sealing ring 4.

[0032] In this technical solution, when the control flow channel needs to be closed, the valve core slides to the side where the electromagnet is located, and the sealing end acts on the first sealing ring to block the first flow channel, that is, to close the control flow channel. When the control flow channel needs to be opened, the valve core slides to the side away from the electromagnet, and the sealing end and the first sealing ring are disengaged, allowing the shaft to enter the first sealing ring, and the first flow channel is opened, that is, to open the control flow channel.

[0033] For example, see Figure 1 and Figure 2 As shown, the electromagnet 3 is assembled and disassembled in the connecting groove through the mounting column 5, and a blind hole is provided at one end of the mounting column 5 close to the end cover 1, and the valve core 2 is slidably arranged in the blind hole through a limit block 6.

[0034] In this technical solution, the mounting column is disassembled and assembled in the connecting groove through a threaded structure, which is convenient for disassembly and assembly. The coil and shell of the electromagnet are sequentially mounted on the mounting shaft and fixed by conventional structures such as nuts. The limit block is used to limit the position of the valve core to prevent the connecting shaft of the valve core from contacting the first sealing ring.

[0035] For example, see Figure 1 and Figure 2 As shown, a limiting hole corresponding to the connecting shaft 23 and the hanging platform 24 is arranged in the limiting block 6, and a first spring 7 is arranged between the end of the hanging platform 24 away from the end cover 1 and the corresponding inner wall of the blind hole.

[0036] In this technical solution, the connecting shaft and the hanging platform are slidably arranged in the limiting hole of the limiting block, the electromagnet is electrically connected, and suction is applied to the valve core. The valve core slides along the limiting hole to the side close to the electromagnet and compresses the first spring. The sealing end acts on the first sealing ring to block the first flow channel, that is, to close the control flow channel. When the electromagnet loses power, the first spring releases elastic potential energy to push the valve core to slide to the side away from the electromagnet, the sealing end and the first sealing ring are disengaged, allowing the positioning shaft to enter the first sealing ring, and the first flow channel is opened, that is, the control flow channel is opened. The limiting hole limits the position of the hanging platform to prevent the connecting shaft of the valve core from contacting the first sealing ring; the limiting hole can also guide the valve core to improve the accuracy of the reciprocating movement of the valve core, and at the same time limit the first spring to avoid failure caused by its tilt.

[0037] For example, see Figure 1 and Figure 2 As shown, a second sealing ring 8 is arranged between the outer wall of the mounting column 5 and the inner wall of the connecting groove.

[0038] In this technical solution, a sealing boss protrudes from the outer wall of the mounting column. After the mounting column is installed in the connecting groove, the sealing boss and the corresponding ends of the connecting groove squeeze the second sealing ring and form a seal, thereby improving the overall sealing performance of the solenoid valve.

[0039] See also Figure 3 and Figure 4 As shown, a solenoid valve comprises a hollow shell 9, a piston 10 slidably arranged in the shell 9, a sealing end cover 20 arranged at both ends of the shell 9 and a solenoid valve, the solenoid valve is the above-mentioned solenoid valve, a second spring 30 is arranged between the piston 10 and the end cover 1, the number of the second springs is single or multiple, a third sealing ring 40 is arranged between the outer wall of the piston 10 and the inner wall of the shell 9, a closing flow channel 91 is arranged in the shell 9, and the two ends of the closing flow channel 91 are respectively located on both sides of the third sealing ring 40, and the end close to the solenoid valve is connected to the control flow channel 11.

[0040] In this technical solution, the housing, piston, sealing end cover and second spring of the door closer can all utilize the structures recorded in the prior art. Conventional structures such as a flow regulating valve are also provided on the housing. The door closer is fixed to the door leaf or door frame, and the piston is hinged to the corresponding door frame or door leaf through conventional gear shafts and rocker arms. When the door is opened, the solenoid valve is in an energized state, that is, the control flow channel is in a closed state, and manpower pushes the door leaf, and drives the piston to move through the rocker arm and gear shaft. The hydraulic oil in the door closer flows from the side close to the end cover through the door opening flow channel to the side close to the sealing end cover, and compresses the second spring, and the external force for opening the door is After it is removed, the door opening flow channel is closed due to the action of the pressure relief valve and the one-way valve, and the door return flow channel is also closed due to the action of the control flow channel. The door leaf is in a stopped state, realizing a normal door open state. When a fire alarm signal or a control signal is encountered, the external control circuit cuts off the power supply of the electromagnet, the electromagnet loses power, the first spring pushes the valve core, and the control flow channel opens. The second spring releases the elastic potential energy to push the piston to move, and the hydraulic oil enters from the side close to the sealing end cover through the door closing flow channel and the control flow channel into the side close to the end cover to close the door leaf. The third sealing ring uses a Y-type sealing ring or an O-type sealing ring or other structures.

[0041] For example, see Figures 1 to 3 As shown, an annular groove 12 is formed on the surface of the end cover 1 for connecting the control flow channel 11 and the door closing flow channel 91 , and a fourth sealing ring 50 and a fifth sealing ring 60 are respectively disposed on both sides of the annular groove 12 .

[0042] In this technical solution, the annular groove is used to connect the control flow channel and the closing flow channel, reducing the processing requirements for the positions of the control flow channel and the closing flow channel, that is, the second flow channel and the closing flow channel can be connected to the annular groove parts respectively, and a filter is provided in the second flow channel through a gasket to prevent waste chips generated by friction between the piston and the gear shaft from entering the solenoid valve. The fourth sealing ring and the fifth sealing ring are conventional O-rings to improve the sealing between the end cover and the housing.

[0043] For example, see Figure 3 As shown, a door opening flow channel is provided in the piston 10, and a pressure relief valve 70 and a one-way valve 80 are provided at both ends of the door opening flow channel respectively.

[0044] In this technical solution, the door opening flow channel is a conventional structure, and the pressure relief valve can also be replaced by a one-way valve. When the door is opened, the piston moves to the side close to the solenoid valve, and the pressure relief valve and the one-way valve will open, that is, the door opening flow channel is in an open state; when the door is closed, the pressure relief valve and the one-way valve are in a closed state, and the hydraulic oil needs to flow back through the door closing flow channel and the control flow channel.

[0045] In summary, the electromagnetic door closer and its electromagnetic valve of the utility model have simple structures, the electromagnetic valve and the corresponding side end cover of the door closer are integrated into one, which is convenient for processing and installation, the valve core is bidirectionally driven by the electromagnet and the first spring, and the opening speed is stable.

[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0047] The above is only a specific implementation of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles of the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A solenoid valve, characterized in that: include: An end cover, wherein a control flow channel is disposed in the end cover, the control flow channel comprises a first flow channel disposed along the axial direction of the end cover and a second flow channel disposed along the radial direction of the end cover, one end of the second flow channel passes through the end cover, and the other end is connected to the first flow channel; a valve core, the valve core being slidably disposed in the first flow channel and being used to open or close the control flow channel; The electromagnet is driven and connected to the valve core.

2. The solenoid valve according to claim 1, characterized in that: A first sealing groove and a connecting groove are respectively arranged at both ends of the first flow channel, a first sealing ring is arranged in the first sealing groove, and an end of the electromagnet close to the end cover is sealed and connected to the connecting groove.

3. The solenoid valve according to claim 2, characterized in that: The valve core includes a sealing end, a yield shaft, a connecting shaft and a hanging platform which are arranged in sequence. The diameter of the sealing end is larger than the inner diameter of the first sealing ring. The circumferential surface of the yield shaft is concavely provided with an oil groove corresponding to the first sealing ring.

4. The solenoid valve according to claim 3, characterized in that: The electromagnet is assembled and disassembled in the connecting groove through a mounting column, a blind hole is arranged at one end of the mounting column close to the end cover, and the valve core is slidably arranged in the blind hole through a limit block.

5. The solenoid valve according to claim 4, characterized in that: The limiting block is provided with a limiting hole corresponding to the connecting shaft and the hanging platform, and a first spring is provided between an end of the hanging platform away from the end cover and a corresponding inner wall of the blind hole.

6. The solenoid valve according to claim 4, characterized in that: A second sealing ring is arranged between the outer wall of the mounting column and the inner wall of the connecting groove.

7. An electromagnetic door closer, characterized in that: It comprises a hollow shell, a piston slidably arranged in the shell, sealing end covers arranged at both ends of the shell and a solenoid valve, wherein the solenoid valve is the solenoid valve according to any one of claims 1 to 6, a second spring is arranged between the piston and the end cover, a third sealing ring is arranged between the outer wall of the piston and the inner wall of the shell, a closing flow channel is arranged in the shell, the two ends of the closing flow channel are respectively located on both sides of the third sealing ring, and one end close to the solenoid valve is connected to the control flow channel.

8. The electromagnetic door closer according to claim 7, characterized in that: An annular groove is concavely formed on the surface of the end cover for connecting the control flow channel and the door closing flow channel, and a fourth sealing ring and a fifth sealing ring are respectively disposed on both sides of the annular groove.

9. The electromagnetic door closer according to claim 7, characterized in that: A door opening flow channel is arranged in the piston, and a pressure relief valve and a one-way valve are arranged at both ends of the door opening flow channel respectively.

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