Positive pressure control device

Abstract

The utility model discloses a positive pressure control device, which particularly relates to the technical field of positive pressure control and comprises a control box, a power connection box is arranged at the lower end of the control box, a pressure sensor is arranged on the upper side in the control box, a mounting lug plate is arranged on one side of the outer end face of the control box, a box door is arranged at the upper end of the control box, and a hinge is arranged at the joint of the control box and the box door. A membrane shell pressure gauge is arranged in the middle of the outer end face of the box door. In the actual use process, under the corresponding arrangement state of the installation sliding rod, the adjusting sliding block, the limiting sliding groove, the locking nut and the adjusting threaded rod, the position of the adjusting sliding block in the limiting sliding groove can be conveniently adjusted; therefore, the position of the adjusting sliding block can be conveniently adjusted according to the specifications of the pressure sensor, the pressure adjusting valve, the flow adjusting valve, the filtering adjusting valve, the travel switch and the pressure reducing valve.

Description

Technical Field

[0001] The utility model relates to the technical field of positive pressure control, in particular to a positive pressure control device. Background Art

[0002] Positive pressure electrical equipment is live equipment used in explosive environments. Certain industrial sites, such as the petroleum, petrochemical, chemical, and steel industries, release dangerous explosive gases during processing and production. If electrical equipment is used in locations containing explosive gases, it must be equipped with gas explosion-proof features. The explosion-proof principle of positive pressure electrical equipment is to introduce a certain pressure of fresh air or inert gas into the device's housing. For example, prior art patent publication CN221328432U discloses an explosion-proof positive pressure control device. Two clamping blocks are used to first insert a filter plate into the positive pressure control device. Then, the filter plate is squeezed, allowing two rubber pads on the positive pressure control device to fit inside the device, securing the filter plate. This allows the filter plate to filter dust and other impurities, allowing a cooling fan to dissipate internal heat, reducing the temperature inside the device and increasing safety during use. The first servo motor is then activated, and its output shaft drives the bevel gear lever to rotate.

[0003] When the above device is working, the two L-shaped lifting plates move downward, which drives the two bases to move and fit into the ground, thereby using the two bases to improve the stability of the entire explosion-proof positive pressure control device and prevent the explosion-proof positive pressure control device from shaking and tipping over. However, when the internal components of the positive pressure control box fail, it is inconvenient to disassemble them. Utility Model Content

[0004] In order to overcome the above-mentioned defects of the prior art, the present invention provides a positive pressure control device. The technical problem to be solved by the present invention is: how to increase the convenience of installing and disassembling the internal components of the control box.

[0005] In order to achieve the above-mentioned object, the present invention provides the following technical solution: a positive pressure control device, comprising a control box, a power connection box being provided at the lower end thereof, a pressure sensor being provided on the upper side of the interior of the control box, a mounting lug being provided on one side of the outer end surface of the control box, a box door being provided at the upper end of the control box, and a hinge being provided at the connection between the control box and the box door;

[0006] A membrane housing pressure gauge is provided in the middle of the outer end surface of the box door, a mounting slide rod is provided on the inner end surface of the control box, a limiting slide groove is provided on the inner end surface of the mounting slide rod, and an adjusting slider is provided inside the limiting slide groove.

[0007] In a preferred embodiment, a pressure regulating valve, a flow regulating valve, a filter regulating valve, a travel switch and a pressure reducing valve are provided inside the control box below the pressure sensor;

[0008] An air inlet pipe is provided in the middle of the outer end surface of the control box, and a locking hole is provided on the outer end surface of the box door at a side close to the membrane housing pressure gauge.

[0009] In a preferred embodiment, the number of the air intake pipes is two, and they are arranged in a mirror image on both sides of the vertical central axis in the top view of the control box;

[0010] There are multiple hinges, and they are arranged in an array on both sides of the vertical central axis of the control box in the right viewing direction.

[0011] In a preferred embodiment, the number of the mounting slide bars is multiple and they are arranged in an array on both sides of the transverse central axis in the top view of the control box.

[0012] There are multiple mounting lugs, which are arranged in an array outside the vertical center point of the control box in a top-down direction.

[0013] In a preferred embodiment, the inner end surface of the limiting slide groove is adapted to the outer end surface of the adjusting slider. There are multiple adjusting sliders, which are arranged in an array on both sides of the vertical center axis in the main viewing direction of the mounting slide bar.

[0014] In a preferred embodiment, an adjusting threaded rod is provided on one side of the outer end surface of the adjusting slider, and a locking nut is provided on the outer end surface of the adjusting threaded rod.

[0015] The embodiment of the utility model has the following advantages:

[0016] When the utility model is actually used, by installing the sliding rod, adjusting block, limiting slide groove, locking nut and adjusting threaded rod in the corresponding setting state, the position of the adjusting block can be conveniently adjusted inside the limiting slide groove, thereby facilitating the position adjustment of the adjusting block according to the specifications of the pressure sensor, pressure regulating valve, flow regulating valve, filter regulating valve, travel switch and pressure reducing valve, thereby effectively increasing the convenience of installation and disassembly of the pressure sensor, pressure regulating valve, flow regulating valve, filter regulating valve, travel switch and pressure reducing valve, and at the same time, when the ear plate is installed in the corresponding setting state, the control box can be conveniently installed and fixed. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely illustrative, and those skilled in the art can, without inventive effort, derive other implementation drawings based on the provided drawings.

[0018] The structures, proportions, sizes, etc. illustrated in this specification are intended solely to complement the contents disclosed herein and to facilitate understanding and reading by persons familiar with the art. They are not intended to limit the conditions under which the present invention may be implemented and therefore have no substantive technical significance. Any structural modifications, changes in proportions, or adjustments in size, without affecting the efficacy and objectives of the present invention, shall remain within the scope of the technical contents disclosed herein.

[0019] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0020] Figure 2 This is a schematic diagram of the overall main cross-sectional structure of the utility model.

[0021] Figure 3 This is a schematic diagram of the slide bar installation structure of the utility model.

[0022] Figure 4 This is a schematic diagram of the right side cross-sectional structure of the installation slide bar of the utility model.

[0023] In the figure: 1 control box, 2 box door, 3 membrane housing pressure gauge, 4 locking hole, 5 mounting ear plate, 6 air inlet pipe, 7 pressure sensor, 8 pressure regulating valve, 9 travel switch, 10 pressure reducing valve, 11 filter regulating valve, 12 flow regulating valve, 13 mounting slide rod, 14 adjusting slide block, 15 limiting slide groove, 16 locking nut, 17 adjusting threaded rod, 18 connection box. DETAILED DESCRIPTION

[0024] The following describes the implementation of the present invention through specific embodiments. Those skilled in the art can readily understand the other advantages and benefits of the present invention from the contents disclosed in this specification. Obviously, the embodiments described are only a portion of the embodiments of the present invention, not all of them. All other embodiments derived by persons of ordinary skill in the art based on the embodiments of the present invention without inventive effort are also within the scope of protection of the present invention.

[0025] The utility model provides a positive pressure control device, such as Figure 1 and 2As shown, it includes a control box 1, a power connection box 18 is provided at the lower end thereof, a pressure sensor 7 is provided on the upper side of the interior of the control box 1, a mounting ear plate 5 is provided on one side of the outer end surface of the control box 1, and multiple mounting ear plates 5 can facilitate the installation and fixation of the control box 1, a box door 2 is provided at the upper end of the control box 1, and a hinge 7 is provided at the connection between the control box 1 and the box door 2.

[0026] A diaphragm shell pressure gauge 3 is provided in the middle of the outer end surface of the box door 2, and a pressure regulating valve 8, a flow regulating valve 12, a filter regulating valve 11, a travel switch 9 and a pressure reducing valve 10 are provided on the lower side of the pressure sensor 7 inside the control box 1. An air inlet pipe 6 is opened in the middle of the outer end surface of the control box 1, and a locking hole 4 is provided on the side of the outer end surface of the box door 2 close to the diaphragm shell pressure gauge 3, and the box door 2 can be locked and fixed through the locking hole 4.

[0027] There are two air intake pipes 6, which are arranged in a mirrored state on both sides of the vertical center axis of the control box 1 when viewed from above. There are multiple hinges 7, which are arranged in an array state on both sides of the vertical center axis of the control box 1 when viewed from the right. There are multiple mounting ear plates 5, which are arranged in an array state on the outside of the vertical center point of the control box 1 when viewed from above.

[0028] like Figure 3 and 4 As shown, the inner end face of the control box 1 is provided with a mounting slide rod 13, and the inner end face of the mounting slide rod 13 is provided with a limiting slide groove 15, and the interior of the limiting slide groove 15 is provided with an adjusting slider 14, and the adjusting slider 14 can slide on the inner side of the limiting slide groove 15, so that the position of the adjusting slider 14 can be adjusted and fixed according to the size and specifications of the pressure sensor 7, the pressure regulating valve 8, the flow regulating valve 12, the filter regulating valve 11, the travel switch 9 and the pressure reducing valve 10, thereby increasing the convenience of installation of the pressure sensor 7, the pressure regulating valve 8, the flow regulating valve 12, the filter regulating valve 11, the travel switch 9 and the pressure reducing valve 10. There are multiple mounting slide rods 13, and they are arranged in an array state on both sides of the horizontal central axis in the top view direction of the control box 1.

[0029] The inner end surface of the limiting slide groove 15 is adapted to the outer end surface of the adjusting slider 14. There are multiple adjusting sliders 14, and they are arranged in an array state on both sides of the vertical center axis of the main viewing direction of the mounting slide rod 13. An adjusting threaded rod 17 is provided on one side of the outer end surface of the adjusting slider 14, and a locking nut 16 is provided on the outer end surface of the adjusting threaded rod 17.

[0030] Working principle of this utility model:

[0031] When the present invention is used, the staff adjusts the position of the adjusting slider 14 according to the specifications of the pressure sensor 7, the pressure regulating valve 8, the flow regulating valve 12, the filter regulating valve 11, the travel switch 9 and the pressure reducing valve 10. Then the staff can lock and fix the pressure sensor 7, the pressure regulating valve 8, the flow regulating valve 12, the filter regulating valve 11, the travel switch 9 and the pressure reducing valve 10 through the locking nut 16 and the adjusting threaded rod 17. Then the staff can connect the air intake pipe 6 on both sides of the control box 1 with the external air duct. The pressure sensor 7 can apply the air control signal to the pressure regulating valve 8. The pressure regulating valve 8 can automatically balance the air source flow through the pressure regulating valve itself according to the level of the air control signal, thereby affecting the gas flow rate entering the control box 1 through the air intake pipe 6, and finally controlling the internal pressure of the control box 1 to be stable and maintained within a normal range.

[0032] Although the present invention has been described in detail above using general descriptions and specific embodiments, it will be apparent to those skilled in the art that modifications or improvements may be made to the present invention. Therefore, such modifications or improvements, without departing from the spirit of the present invention, are within the scope of protection claimed herein.

Claims

1. A positive pressure control device, characterized in that: include: A control box (1) is provided with an electrical connection box (18) at its lower end, a pressure sensor (7) is provided on the upper side of the interior of the control box (1), a mounting lug (5) is provided on one side of the outer end surface of the control box (1), a box door (2) is provided at the upper end of the control box (1), and a hinge (7) is provided at the connection between the control box (1) and the box door (2); A membrane housing pressure gauge (3) is provided at the middle of the outer end surface of the box door (2), and a mounting slide rod (13) is provided at the inner end surface of the control box (1). A limiting slide groove (15) is provided on the inner end surface of the mounting slide rod (13), and an adjusting slider (14) is provided inside the limiting slide groove (15).

2. The positive pressure control device according to claim 1, characterized in that: The control box (1) is provided with a pressure regulating valve (8), a flow regulating valve (12), a filter regulating valve (11), a travel switch (9) and a pressure reducing valve (10) on the lower side of the pressure sensor (7); An air inlet pipe (6) is provided in the middle of the outer end surface of the control box (1), and a locking hole (4) is provided on the outer end surface of the box door (2) on a side close to the membrane shell pressure gauge (3).

3. The positive pressure control device according to claim 2, characterized in that: The number of the air intake pipes (6) is two, and they are arranged in a mirror image state on both sides of the vertical central axis in the top view direction of the control box (1); The hinges (7) are provided in a plurality and are arranged in an array state on both sides of the vertical central axis in the right viewing direction of the control box (1).

4. The positive pressure control device according to claim 1, characterized in that: The number of the mounting slide bars (13) is plural and they are arranged in an array on both sides of the transverse central axis in the top view direction of the control box (1); The number of the mounting ear plates (5) is plural and they are arranged in an array state outside the vertical center point of the control box (1) in the top-view direction.

5. The positive pressure control device according to claim 1, characterized in that: The inner end surface of the limiting sliding groove (15) is adapted to the outer end surface of the adjusting slider (14), and the adjusting slider (14) is provided in plurality and arranged in an array state on both sides of the vertical central axis in the main viewing direction of the mounting slide bar (13).

6. The positive pressure control device according to claim 1, characterized in that: An adjusting threaded rod (17) is provided on one side of the outer end surface of the adjusting slider (14), and a locking nut (16) is provided on the outer end surface of the adjusting threaded rod (17).

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