Pressure controller convenient to use

Abstract

The utility model discloses a pressure controller convenient to use, relates to the technical field of pressure controllers, and solves the problem that the pressure controller in the prior art is inconvenient to maintain the internal structure. Comprising a device shell and a cover plate, the cover plate is detachably connected outside the device shell, the device shell comprises a bottom plate, an upper side plate and a lower side plate which are connected with one another, the cover plate comprises an outer plate and two outer side plates which are connected with one another, and a pressure sensing device, a transmission lever device, an elastic piece and a switch device are arranged in the device shell. The pressure sensing device converts pressure into displacement to drive the transmission lever device to overcome the acting force of the elastic piece to move so as to drive the switch device to act; one or more vertical guide plates are connected between the upper side plate and the lower side plate, one end, away from the transmission lever device, of the elastic piece is connected with a guide block, and the guide block is connected into the vertical guide plate in an up-down sliding mode. And after the cover plate is disassembled, more observation angles can be provided, and the effect of facilitating maintenance and debugging work is achieved.

Description

Technical Field

[0001] This utility model relates to the field of pressure controller technology, and in particular to a pressure controller that is easy to use. Background Technology

[0002] A pressure controller is a specialized pressure control instrument used in industrial process measurement and control systems. Often referred to as a pressure switch, it uses pressure as a control signal and achieves automatic pressure control through an electrical switch. The pressure controller can activate when the controlled pressure exceeds or falls below the set value, playing a role in safety protection or automatic adjustment. However, existing pressure controllers are relatively enclosed in structure, generally with only one side being detachable, making it inconvenient to perform internal maintenance. Utility Model Content

[0003] The purpose of this invention is to provide a pressure controller that is easy to use. After removing the cover, it can provide more viewing angles, which facilitates maintenance. Its internal structure is more stable and easy to debug.

[0004] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0005] A user-friendly pressure controller includes a housing and a cover plate, the cover plate being detachably connected to the outside of the housing. The housing includes a bottom plate, an upper side plate, and a lower side plate connected to each other. The cover plate includes an outer plate and two outer side plates connected to each other. The housing contains a pressure sensing device, a transmission lever device, an elastic element, and a switching device. The pressure sensing device converts pressure into displacement, driving the transmission lever device to move against the force of the elastic element, thereby actuating the switching device. One or more vertical guide plates are connected between the upper and lower side plates. A guide block is connected to the end of the elastic element away from the transmission lever device, and the guide block slides up and down and is connected to the vertical guide plate.

[0006] Furthermore, the elastic element includes a rotating rod rotatably connected to the upper side plate, the lower end of the rotating rod being threadedly connected to a threaded sleeve, a compression spring being provided between the lower end of the threaded sleeve and the transmission lever device, and a guide block being connected to the threaded sleeve.

[0007] Furthermore, the upper end of the rotating rod is connected to a hand-tightening knob located above the upper side plate.

[0008] Furthermore, the pressure sensing device includes a bellows pressure sensor detachably connected to the lower side plate, with a corresponding through hole on the bottom plate. The displacement of the upper end of the bellows pressure sensor is transmitted upward to the transmission lever device through the through hole.

[0009] Furthermore, the lower end of the bellows pressure sensor is connected to the connecting pipe, and the lower end of the connecting pipe is threaded to the connecting port. The connecting port has internal threads at both the upper and lower ends, with the upper thread connected to the connecting pipe and the lower thread connected to the pipeline to be tested.

[0010] Furthermore, a limiting groove is provided in the vertical guide plate, and a limiting block located in the limiting groove is connected to the outside of the transmission lever device to limit the displacement distance of the transmission lever device.

[0011] Furthermore, several columns are connected between the upper and lower side plates, and the inner side of the cover plate abuts against the outside of the columns.

[0012] Furthermore, the outer side of the column is connected to the plug, and the vertical guide plate is provided with a plug hole that matches the plug. The cover plate is fixed to the end of the corresponding plug by screws.

[0013] In summary, this utility model has the following beneficial effects:

[0014] The device housing consists only of a base plate and upper and lower side plates. After the cover is removed, it provides more viewing angles from the sides, which facilitates maintenance. The adjustment of its elastic components is more stable under the action of the guide plate, which facilitates debugging. Furthermore, the outer guide plate can be directly removed after the cover is removed, which facilitates maintenance of the elastic components. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a user-friendly pressure controller according to this utility model;

[0016] Figure 2 This is a schematic diagram of the disassembly of the cover plate of a pressure controller that is easy to use according to this utility model.

[0017] In the diagram, 1. Device housing; 11. Base plate; 12. Upper side plate; 13. Lower side plate; 14. Vertical guide plate; 15. Column; 16. Insert block; 2. Cover plate; 21. Outer plate; 22. Outer side plate; 3. Bellows pressure sensor; 31. Connecting pipe; 32. Connecting port; 4. Transmission lever device; 41. Limiting block; 5. Elastic element; 51. Guide block; 52. Rotating rod; 53. Threaded sleeve; 54. Compression spring; 55. Hand-tightening knob. Detailed Implementation

[0018] The specific embodiments of this utility model will be further described below with reference to the accompanying drawings. These embodiments do not constitute a limitation on this utility model. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of this application.

[0019] An easy-to-use pressure controller, such as Figure 1 and Figure 2 As shown, the device includes a housing 1 and a cover plate 2. Both the housing 1 and the cover plate 2 have a U-shaped cross-section. The housing 1 includes an integrally connected bottom plate 11, an upper side plate 12, and a lower side plate 13. The cover plate 2 includes an integrally connected outer plate 21 and two outer side plates 22. The cover plate 2 is detachably connected to the outside of the housing 1 by screws. The two ends of the inner side of the housing 1 can be integrally connected to abutment edges, so that after the cover plate 2 is installed, its two outer side plates 22 can abut against the outer side of the abutment edge, thereby improving the airtightness and stability of the device.

[0020] Several columns 15 are connected between the upper side plate 12 and the lower side plate 13. The inner side of the cover plate 2 abuts against the outside of the columns 15. The upper side plate 12 and the lower side plate 13 can also be completely connected through the columns 15. The bottom plate 11 is detachably connected to the outside of the columns 15 by screws, which further improves the overall detachability of the device and facilitates maintenance. In this embodiment, only three columns 15 are connected between the outer sides of the upper side plate 12 and the lower side plate 13. Two are on the two sides and abut against the two corresponding outer side plates 22. One is in the middle, which divides the space inside the device housing 1 into a left space and a right space. The cover plate 2 is connected to one or more of the columns 15 by screws.

[0021] like Figure 1 As shown, the device housing 1 is equipped with a pressure sensing device, a transmission lever device 4, an elastic element 5 and a switch device. The pressure sensing device is located on the right side, which converts the pressure into an upward displacement, drives the transmission lever device 4 to move against the force of the elastic element 5, thereby driving the switch device on the left side to operate.

[0022] The transmission lever device 4 includes a lever that spans the left and right spaces and is hinged in the middle to the lower side plate 13 or the central column 15.

[0023] The pressure sensing device is located in the lower right space, including a bellows pressure sensor 3 (for easy replacement) that can be detachably connected to the lower side plate 13. A through hole is opened on the bottom plate 11. The lower end of the bellows pressure sensor 3 is connected to the pipeline to be tested, and the upper end is connected to the top block and other structures. The pressure is converted into displacement and transmitted upward to the right side of the transmission lever device 4 through the top block and other structures.

[0024] like Figure 1 As shown, the elastic element 5 is located in the right space and abuts against the upper right side of the transmission lever device 4, pushing the right end of the transmission lever device 4 downward; while the switching device can be a micro switch or the like, which can realize the opening and closing of the micro switch through the left end of the transmission lever, or can directly realize the circuit opening and closing through the left end of the transmission lever connected to the contact point. Its specific structure is existing technology and will not be described in detail here.

[0025] like Figure 1As shown, two vertical guide plates 14 are connected between the upper side plate 12 and the lower side plate 13, one inside the elastic member 5 and the other outside the elastic member 5. Two guide blocks 51 are connected to the end of the elastic member 5 away from the transmission lever device 4. The guide blocks 51 slide up and down and are connected to the corresponding vertical guide plates 14.

[0026] Specifically, the elastic element 5 includes a rotating rod 52 rotatably connected to the upper side plate 12. The rotating rod 52 can be restricted to rotating only within the upper side plate 12 by two limiting rings. The upper end of the rotating rod 52 is connected to a hand-tightening knob 55 located above the upper side plate 12. The lower end of the rotating rod 52 is threadedly connected to a threaded sleeve 53. A compression spring 54 is connected between the lower end of the threaded sleeve 53 and the transmission lever device 4. The guide block 51 is fixedly connected to the front and rear sides of the threaded sleeve 53 and achieves its up and down guiding sliding under the limitation of the corresponding vertical guide plate 14. The lower end of the rotating rod 52 is also coaxially connected to a guide rod. The compression spring 54 is sleeved outside the guide rod to reduce excessive deformation of the compression spring 54. There is space between the lower end of the guide rod and the transmission lever device 4 to avoid interference.

[0027] Among them, the outermost vertical guide plate 14 is also provided with a limiting groove (straight or arc-shaped that matches the movement trajectory of the lever transmission device). The transmission lever device 4 is connected to a limiting block 41 located in the limiting groove on the outside. The upper and lower ends of the limiting groove limit the vertical displacement distance of the right end of the transmission lever device 4.

[0028] like Figure 1 As shown, the outer side of the column 15 is connected to the plug 16, and the outermost vertical guide plate 14 has a plug hole that matches the plug 16. The cover plate 2 is fixed to the end of the corresponding plug 16 by screws, so that after the cover plate 2 is removed, the outer vertical guide plate 14 can also be removed, making it easy to directly observe the elastic element 5 and the transmission lever device 4, so as to realize observation and maintenance work.

[0029] The lower end of the bellows pressure sensor 3 is connected to the connecting pipe 31, and the lower end of the connecting pipe 31 is threaded to the connecting port 32. The upper and lower ends of the connecting port 32 are respectively provided with internal threads. The upper thread is connected to the connecting pipe 31, and the lower thread is connected to the pipeline to be tested. In this embodiment, the upper thread and the lower thread have opposite directions of rotation but equal pitch. By using different specifications of connecting ports, it is possible to connect with pipelines to be tested with different outer diameters, thereby improving the versatility of the device.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model. Those skilled in the art can make various modifications or equivalent substitutions to the present utility model within its substance and protection scope, and such modifications or equivalent substitutions should also be considered to fall within the protection scope of the present utility model's technical solution.

Claims

1. A user-friendly pressure controller, characterized in that: The device includes a housing (1) and a cover plate (2). The cover plate (2) is detachably connected to the outside of the housing (1). The housing (1) includes a bottom plate (11), an upper side plate (12), and a lower side plate (13) that are connected to each other. The cover plate (2) includes an outer plate (21) and two outer side plates (22) that are connected to each other. The housing (1) is equipped with a pressure sensing device, a transmission lever device (4), an elastic element (5), and a switch device. The pressure sensing device converts pressure into displacement, drives the transmission lever device (4) to move against the force of the elastic element (5), thereby driving the switch device to operate. One or more vertical guide plates (14) are connected between the upper side plate (12) and the lower side plate (13). The end of the elastic element (5) away from the transmission lever device (4) is connected to a guide block (51). The guide block (51) slides up and down and is connected to the vertical guide plate (14).

2. The easy-to-use pressure controller according to claim 1, characterized in that: The elastic element (5) includes a rotating rod (52) rotatably connected to the upper side plate (12), the lower end of the rotating rod (52) being threadedly connected to a threaded sleeve (53), a compression spring (54) being provided between the lower end of the threaded sleeve (53) and the transmission lever device (4), and a guide block (51) being connected to the threaded sleeve (53).

3. The easy-to-use pressure controller according to claim 2, characterized in that: The upper end of the rotating rod (52) is connected to a hand-twisted knob (55) located above the upper side plate (12).

4. The easy-to-use pressure controller according to claim 1, characterized in that: The pressure sensing device includes a bellows pressure sensor (3) that can be detachably connected to the lower side plate (13). A corresponding through hole is opened on the bottom plate (11). The displacement of the upper end of the bellows pressure sensor (3) is transmitted upward to the transmission lever device (4) through the through hole.

5. A user-friendly pressure controller according to claim 4, characterized in that: The lower end of the bellows pressure sensor (3) is connected to the connecting pipe (31), and the lower end of the connecting pipe (31) is threaded to the connecting port (32). The upper and lower ends of the connecting port (32) are respectively provided with internal threads, the upper thread is connected to the connecting pipe (31), and the lower thread is connected to the pipeline to be tested.

6. A user-friendly pressure controller according to claim 1, characterized in that: The vertical guide plate (14) also has a limiting groove, and the transmission lever device (4) is connected to a limiting block (41) located in the limiting groove on the outside of the limiting groove to limit the displacement distance of the transmission lever device (4).

7. A user-friendly pressure controller according to claim 1 or 6, characterized in that: Several columns (15) are connected between the upper side plate (12) and the lower side plate (13), and the inner side of the cover plate (2) abuts against the outside of the columns (15).

8. A user-friendly pressure controller according to claim 7, characterized in that: The column (15) is connected to the plug (16) on the outside. The vertical guide plate (14) has a hole that matches the plug (16). The cover plate (2) is fixed to the end of the corresponding plug (16) by screws.

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