Resistance remote transmission pressure switch

Abstract

The utility model provides a resistor remote transmission pressure switch, which relates to the technical field of resistor remote transmission, and comprises a connector assembly module, a pressure module and a resistance value output module, the connector assembly module comprises an ejector head assembly, the pressure module comprises a spring board and a tension spring, the resistance value output module comprises an ejector pin, a slide wire resistor and a wiring terminal, the spring board is connected with the ejector pin, and the tension spring is connected with the slide wire resistor. After the ejector head assembly is pressed to act, the springboard acts, and the springboard drives the ejector pin to act to change the resistance value of the slide wire resistor. By arranging the connector assembly module and the resistance value adjusting module, continuously changing resistance values can be provided for external equipment according to pressure changes so as to adjust the external equipment, the pressure and resistance value difference adjusting function of the switch is achieved by arranging the pressure and pressure difference module, and a user can set the corresponding pressure and resistance value difference according to the field use working condition.

Description

Technical Field

[0001] The utility model relates to the technical field of resistor remote transmission, in particular to a resistor remote transmission pressure switch. Background Art

[0002] In the industrial field, there are often situations where it is necessary to control the changes of other parameters according to the changes of one parameter. For example, in the field of boilers, boilers are an energy conversion device. Energy materials generate high-temperature steam through combustion or other energy conversion methods, which is transmitted through gas lines and applied to other workshops. In order to achieve the purpose of protecting boilers, boilers are usually equipped with safety exhaust devices, flame size adjustment devices, etc. The main purpose is to be able to adjust the pressure in the boiler through the above devices when the pressure in the boiler is too high. The adjustment of the above devices needs to be adjusted according to the actual operating status parameters. Based on this, the present application proposes a resistance remote pressure switch, which can provide a continuously changing resistance value for external equipment according to the pressure change and then adjust the external equipment. When used in the field of boilers, when the pressure in the boiler increases, the switch pressure increases, and the output resistance value continues to increase. When the pressure in the boiler reaches the switch setting value, the switch resistance value reaches the maximum. The switch adjusts the boiler flame size or other equipment parameters by outputting a continuously changing resistance value to adjust the pressure in the boiler to the state required by the terminal. Utility Model Content

[0003] The utility model aims to provide a resistance remote pressure switch, which can provide a continuously changing resistance value for an external device according to the pressure change and thus adjust the external device.

[0004] In order to solve the above problems, the utility model provides a resistance remote pressure switch, including a joint assembly module, a pressure module and a resistance output module, the joint assembly module includes a head assembly, the pressure module includes a spring board and a tension spring, the resistance output module includes a pin, a sliding resistor and a terminal, the spring board is connected to the pin, the head assembly is pressed to move the spring board, and the spring board drives the pin to move to change the resistance of the sliding resistor.

[0005] According to an embodiment of the present invention, the pressure module further includes a pressure difference adjustment mechanism for adjusting the resistance difference within a unit pressure.

[0006] According to an embodiment of the utility model, the differential pressure adjustment mechanism includes a differential pressure adjustment screw, a differential pressure adjustment spring, a differential pressure adjustment connecting rod and a differential pressure adjustment pull ring which are connected in sequence, and the differential pressure adjustment pull ring is connected to the springboard.

[0007] According to an embodiment of the utility model, the differential pressure regulating mechanism further comprises a differential pressure indicating plate and a resistance value differential scale plate, and the differential pressure indicating plate is connected to the differential pressure adjusting screw.

[0008] According to an embodiment of the present invention, the resistance output modules are provided in a plurality of groups.

[0009] According to an embodiment of the utility model, the resistance output module further includes a spring sheet bracket and a spring sheet, the spring sheet bracket is installed on the spring board, the spring sheet is connected to the spring sheet bracket, and the ejector pin is installed on the spring sheet.

[0010] According to an embodiment of the present utility model, the pressure module further includes a pressure regulating screw, and the pressure regulating screw is connected to the tension spring.

[0011] According to an embodiment of the present utility model, the pressure module further includes a pressure scale plate and a pressure indicating plate, and the pressure indicating plate is connected to the pressure regulating screw.

[0012] According to an embodiment of the utility model, the joint assembly module further includes a joint and a bellows, and the head assembly is connected to the bellows.

[0013] According to an embodiment of the utility model, the jack assembly includes a transmission head and an adjusting jack.

[0014] The beneficial effect of the utility model is that by setting the connector assembly module and the resistance adjustment module, it is possible to provide a continuously changing resistance value for the external device according to the pressure change and thus adjust the external device. By setting the pressure differential module, the pressure and resistance difference adjustable function of the switch is realized, and the user can set the corresponding pressure and resistance difference according to the on-site usage conditions. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The utility model is further described below in conjunction with the accompanying drawings and embodiments.

[0016] Figure 1 This is a schematic diagram of the overall structure of the resistance remote pressure switch;

[0017] Figure 2 for Figure 1 Structural schematic diagram of the cross section at AA;

[0018] Figure 3 This is a schematic diagram of the internal structure of the resistor remote pressure switch. DETAILED DESCRIPTION

[0019] The following description is only used to disclose the utility model so that those skilled in the art can implement the utility model. The embodiments described below are only for example, and those skilled in the art can think of other obvious variations. The basic principles of the utility model defined in the following description can be applied to other embodiments, variations, improvements, equivalents, and other solutions that do not deviate from the spirit and scope of the utility model.

[0020] A resistor remote pressure switch, such as Figure 1 The present invention proposes a resistance remote pressure switch for steam, water, air, non-flammable gas and various corrosive gases. When the system pressure exceeds the set value, the resistance reaches the maximum, thereby reducing the flame size of the boiler system or controlling the parameters of other equipment.

[0021] The pressure switch mainly includes three modules: a housing 1, a joint assembly module 2, a pressure module 3 and a resistance output module 4. The joint assembly module 2 is used to connect with a gas or liquid pipeline. The joint assembly module 2 includes a plug assembly. The medium pressure in the pipeline can be transmitted through a diaphragm, a bellows, etc. to make the plug assembly actuate. In this embodiment, Figure 2 The joint assembly module 2 includes a joint 201, a bellows 202 and a mandrel assembly, and the mandrel assembly includes a transmission head 203 and an adjusting mandrel 205. When gas or liquid flows into the joint 201, the bellows 202 is compressed and deformed to push the transmission head 203 and the adjusting mandrel 205 to move upward.

[0022] The joint 201, the bellows 202 and the sheath 204 are connected by soldering. The sheath 204 protects the bellows 202 and improves the stability of welding. The transmission head 203 and the adjustment head 205 are matched by threaded connection and are height-adjustable, which improves the adaptability of the joint assembly.

[0023] The pressure module 3 includes a springboard 303, a tension spring 305, a pressure differential adjustment module and an indicating mechanism. The pressure differential adjustment module includes a pressure regulating assembly and a pressure differential adjustment mechanism. The pressure regulating assembly includes a pressure regulating screw 310. The pressure regulating screw 310 is connected to the tension spring 305 and is used to adjust the pressure of the tension spring 305 on the springboard 303. The pressure differential adjustment mechanism includes a differential adjustment screw 309, a differential adjustment tension spring 306, a differential adjustment connecting rod 311 and a differential adjustment pull ring 312 connected in sequence. The differential adjustment pull ring 312 is connected to the springboard 303. During the adjustment process, the differential adjustment tension spring 306 mainly acts on the springboard 303 through the differential adjustment connecting rod 311 and the differential adjustment pull ring 312 to apply a pulling force. Specifically, Figure 3 The differential adjustment connecting rod 311 is rotatably installed, and its two ends are respectively connected to the differential adjustment tension spring 306 and the differential adjustment pull ring 312. The pressure difference adjustment mechanism is used to adjust the resistance value within the unit pressure, and cooperates with the pressure regulating screw 310 to achieve a fine-tuning effect.

[0024] The indicating mechanism includes a pressure scale plate 301 and a pressure indicating plate 307 , wherein the pressure indicating plate 307 is connected to the pressure regulating screw 310 , and also includes a differential adjustment indicating plate 308 and a resistance difference scale plate 302 , wherein the differential adjustment indicating plate 308 is connected to the differential adjustment screw 309 .

[0025] The switch pressure and resistance difference can be adjusted by the pressure regulating screw 310 and the differential adjusting screw 309 , and can be accurately displayed on the pressure indicating plate 307 and the differential adjusting indicating plate 308 .

[0026] The spring board 303 , the differential adjustment spring 306 , and the differential adjustment connecting rod 311 realize closed-loop adjustment through the differential adjustment pull ring 312 , and the user can adjust the resistance difference within a unit pressure according to the differential adjustment screw 309 .

[0027] The pressure scale plate 301 and the resistance difference scale plate 302 can intuitively reflect the current use status of the switch, and the user can adjust it according to the working conditions.

[0028] A triangular rotating shaft 304 is installed on the housing 1. The cross-section of the triangular rotating shaft 304 at the contact point with the springboard 303 is triangular. The triangular rotating shaft 304 structure is adopted to connect with the springboard 303. The triangular rotating shaft 304 improves the firmness and reliability of assembly. At the same time, the triangular rotating shaft 304 has rounded corners, which makes the contact with the springboard 303 more complete, reduces the rotation friction, and improves the switching accuracy.

[0029] Resistance output module 4 Figure 3 , including a wiring terminal 401, a spring sheet bracket 402, a spring sheet 403, a pin 404 and a sliding resistor 405. The spring sheet 403 is fixed to the spring board 303 through the spring sheet bracket 402. The pin 404 is installed on the spring sheet 403. The spring sheet 403 can form a compensation effect on the pin 404, so that the pin 404 and the sliding resistor 405 maintain good contact. The spring sheet 403 is connected to the wiring terminal 401 through a wiring harness. The wiring terminal 401 is used for wiring peripheral equipment. There is an insulating gasket between the spring sheet 403 and the spring sheet bracket 402 to prevent the shell from being electrified and protect personal safety.

[0030] An innovation has been achieved in which the resistance value can be adjusted through a pressure module and transmitted to peripheral devices.

[0031] Optionally, the present invention can be equipped with a plurality of spring sheets 403 and a plurality of sliding resistors 405, so as to realize the function of controlling multiple devices by one switch.

[0032] The main function of the connector assembly system is to connect to the external pipeline and serve as the power input end of the detection switch; the resistance adjustment module is the execution unit of the entire switch, and its main function is to provide continuously changing resistance values ​​for external devices and thus adjust the external devices; the pressure differential module realizes the adjustable pressure and resistance difference of the detection switch, and users can set the corresponding pressure and resistance difference according to the on-site working conditions.

[0033] Working principle of the switch: gas or liquid flows into the joint 210, the bellows 202 is deformed by pressure, pushing the transmission head 203 and the adjusting head 205 upward, and the adjusting head 205 lifts the springboard 303 to rotate. When the pressure in the joint assembly module is greater than the tension of the pressure-adjusting tension spring 305, the force on the right side of the springboard is greater than the left side, and the right side tilts upward, driving the ejector pin 404 to move along the sliding resistor 405, the resistance value increases, and is output to the terminal through the wire; when the pressure of the gas or liquid flowing into the switch decreases, the pressure in the joint assembly module is less than the tension of the pressure-adjusting tension spring 305, the force on the right side of the springboard 303 is less than the left side, the left side tilts upward, the ejector pin is reset, and the resistance value decreases. During the adjustment process, the differential adjustment tension spring 306 acts on the springboard 303 mainly through the differential adjustment connecting rod 311 and the pull ring 312, applying a resistance to adjust the resistance value within the unit pressure.

[0034] Embodiment 2, based on embodiment 1, can further add moving and static contacts to realize the control effect of the device connected thereto (external device without resistance adjustment), that is, the effect of a traditional pressure switch, the moving contact is connected to the springboard 303, and the springboard 303 moves to make the moving and static contacts contact or disengage.

[0035] Those skilled in the art should understand that the embodiments of the present invention described above and shown in the accompanying drawings are only examples and do not limit the present invention. The purpose of the present invention has been fully and effectively achieved. The functions and structural principles of the present invention have been demonstrated and explained in the embodiments. Without departing from the principles, the embodiments of the present invention may be deformed and modified in any way.

Claims

1. A resistor remote pressure switch, characterized in that: The invention comprises a joint assembly module (2), a pressure module (3) and a resistance output module (4); the joint assembly module (2) comprises a head assembly, the pressure module (3) comprises a spring board (303) and a tension spring (305), the resistance output module (4) comprises a push pin (404), a sliding resistor (405) and a connection terminal (401); the spring board (303) is connected to the push pin (404); the head assembly is pressed to move the spring board (303); the spring board (303) drives the push pin (404) to move, so that the resistance value of the sliding resistor (405) changes.

2. The resistance remote pressure switch according to claim 1, characterized in that: The pressure module (3) also includes a pressure difference adjustment mechanism, which is used to adjust the resistance difference within a unit pressure.

3. The resistance remote pressure switch according to claim 2, characterized in that: The differential pressure regulating mechanism comprises a differential pressure regulating screw rod (309), a differential pressure regulating tension spring (306), a differential pressure regulating connecting rod (311) and a differential pressure regulating pull ring (312) which are connected in sequence, and the differential pressure regulating pull ring (312) is connected to the springboard (303).

4. The resistance remote pressure switch according to claim 3 is characterized in that: The differential pressure regulating mechanism further comprises a differential pressure indicating plate (308) and a resistance value differential scale plate (302), wherein the differential pressure indicating plate (308) is connected to the differential pressure regulating screw rod (309).

5. The resistance remote pressure switch according to any one of claims 1 to 4, characterized in that: The resistance output modules (4) are provided in several groups.

6. The resistance remote pressure switch according to any one of claims 1 to 4, characterized in that: The resistance output module (4) further comprises a spring sheet bracket (402) and a spring sheet (403), wherein the spring sheet bracket (402) is mounted on the spring board (303), the spring sheet (403) is connected to the spring sheet bracket (402), and the ejector pin (404) is mounted on the spring sheet (403).

7. The resistance remote pressure switch according to claim 6, characterized in that: The pressure module (3) further comprises a pressure regulating screw (310), wherein the pressure regulating screw (310) is connected to the tension spring (305).

8. The resistance remote pressure switch according to claim 7, characterized in that: The pressure module (3) further comprises a pressure scale plate (301) and a pressure indicating plate (307), and the pressure indicating plate (307) is connected to the pressure regulating screw (310).

9. The resistance remote pressure switch according to claim 8, characterized in that: The joint assembly module (2) further comprises a joint (201) and a bellows (202), and the head assembly is connected to the bellows (202).

10. The resistance remote pressure switch according to claim 9, characterized in that: The mandrel assembly comprises a transmission head (203) and an adjusting mandrel (205).

Images