A protective cover for negative pressure and low pressure equipment

Abstract

The present invention proposes a protective cover for negative pressure and low pressure equipment, comprising: a first bottom plate, a second bottom plate, a lead screw, a sliding bracket, a baffle, a guide rail, a motor, a buckle bracket, a first membrane body and a second membrane body provided with an inflation port; the baffle is arranged at the right end of the first bottom plate, the buckle bracket can be rotatably arranged at the left end of the first bottom plate, a sealing buckle structure is arranged on the surface opposite to the baffle and the buckle bracket, the guide rail and the lead screw are respectively arranged at the front end and the rear end of the first bottom plate, and a lead screw nut is arranged on the lead screw; one leg of the sliding bracket is fixedly connected to the lead screw nut, and a slider is arranged on the other leg; the arc-shaped membrane body is sealed and connected to the buckle bracket and the left end of the first bottom plate; the right end of the rectangular membrane body is sealed and connected to the outer periphery of the baffle, and the left end is sealed and connected to the outer periphery of the sliding bracket, and the other two ends of the rectangular membrane body are correspondingly provided with a sealing buckle structure on the first bottom plate; at least one inflation port is arranged on the first membrane body and the second membrane body. The present invention visualizes the leakage of the negative pressure and low pressure device that is difficult to detect, has low maintenance cost and is easy to use.

Description

Technical Field

[0001] The invention belongs to the technical field of safety protection, and in particular relates to a protective cover for negative pressure and low pressure equipment. Background Art

[0002] Safety protection technology is an important part of the field of low-pressure and negative-pressure equipment technology. As an indispensable part of negative-pressure and low-pressure equipment, the safety protection function of the protective cover will be directly related to the life safety of the operator. Unlike high-pressure devices, the leakage of negative-pressure and low-pressure devices is difficult to detect directly. For example, leakage may cause external air to enter the device, which will bring great safety hazards and economic losses to users. In the prior art, the protection of negative-pressure and low-pressure equipment mainly relies on various detection devices and manual inspections. However, for complex industrial environments, detectors may fail or give false alarms, and are expensive, which makes the maintenance cost high. Manual inspections are more time-consuming and it is difficult to detect micro-leaks. Therefore, improving the traditional protection method and designing a low-cost, easy-to-use and relatively intuitive protection device will help solve the above technical problems. Summary of the invention

[0003] In order to solve the above deficiencies in the prior art, the present invention proposes a protective cover for negative pressure and low pressure equipment.

[0004] The technical solution of the present invention is achieved in this way:

[0005] A protective cover for negative pressure and low pressure equipment, comprising: a first bottom plate, a second bottom plate, a lead screw, a sliding bracket, a baffle, a guide rail, a motor, a buckling bracket, a first membrane body and a second membrane body;

[0006] The first bottom plate is a rectangular structure, the second bottom plate is fixed to the upper surface of the first bottom plate and a plurality of fixing grooves are provided on the surface of the second bottom plate;

[0007] The baffle is an arc-shaped baffle, and the sliding bracket and the buckle bracket are both arc-shaped brackets matching the arc-shaped baffle, the baffle is vertically fixed to the right end of the first bottom plate, the buckle bracket is rotatably arranged at the left end of the first bottom plate, a sealing buckle structure is arranged on the surface opposite to the baffle and the buckle bracket, the guide rail is arranged at the front end of the first bottom plate, the lead screw is located at the rear end of the first bottom plate, the lead screw is driven by a motor and a lead screw nut is arranged on the lead screw, and the lead screw is arranged parallel to the guide rail; two free ends of the sliding bracket are respectively provided with legs, one leg is fixedly connected to the lead screw nut, and the other leg is provided with a slider for sliding on the guide rail;

[0008] The first membrane body is an arc-shaped membrane body, the arc segment of which is sealed with the buckle bracket, and the straight segment is sealed with the left end of the first bottom plate; the second membrane body is a rectangular membrane body, the right end of which is sealed with the outer periphery of the baffle, and the left end is sealed with the outer periphery of the sliding bracket, and the other two ends of the rectangular membrane body are provided with corresponding sealing buckle structures on the first bottom plate; at least one inflation port is provided on the first membrane body and the second membrane body.

[0009] Preferably, a guide rail is provided on both sides of the lead screw, and two sliding blocks matching the guide rail structure are correspondingly provided on the support feet connected to the lead screw nut.

[0010] More preferably, the baffle is a semicircular baffle, the sliding bracket and the snap-fit ​​bracket are both semicircular brackets matching the semicircular baffle, and the first membrane body is a semicircular sheet.

[0011] Most preferably, the first film body and the second film body both include any one of a high temperature resistant PI polyimide film and a highly transparent high temperature resistant PET film.

[0012] The present invention makes the leakage of the negative pressure and low pressure device which is difficult to detect visually, and once the leakage occurs, it is the safe gas that enters the negative pressure and low pressure device, leaving more reaction time for the operator, and has the advantages of simple structure, scientific design and low production cost, which greatly reduces the cost and difficulty of maintaining the negative pressure and low pressure device. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention 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 of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0014] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0015] Figure 2 for Figure 1 A schematic diagram of the enlarged structure at A in the middle;

[0016] Figure 3 for Figure 1 Schematic diagram of the enlarged structure at point B in the middle.

[0017] In the figure: 1, first base plate; 2, second base plate; 21, fixing groove; 3, lead screw; 4, sliding bracket; 41, support foot; 411, slider; 412, lead screw nut; 5, baffle; 6, guide rail; 7, motor; 8, snap-fit ​​bracket. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] like Figure 1 As shown: A protective cover for negative pressure and low pressure equipment, comprising: a first base plate 1, a second base plate 2, a lead screw 3, a sliding bracket 4, a baffle 5, a guide rail 6, a motor 7, a buckling bracket 8, a first membrane body and a second membrane body;

[0020] The first bottom plate 1 is a rectangular structure, the second bottom plate 2 is fixed to the upper surface of the first bottom plate 1 and a plurality of fixing grooves 21 are provided on the surface of the second bottom plate 2;

[0021] The baffle 5 is an arc-shaped baffle, and the sliding bracket 4 and the buckle bracket 8 are both arc-shaped brackets matching the arc-shaped baffle. The baffle 5 is vertically fixed to the right end of the first base plate 1, and the buckle bracket 8 is rotatably arranged at the left end of the first base plate 1 (the rotatable connecting member is a prior art, such as a hinge.), and a sealing buckle structure is arranged on the surface opposite to the baffle 5 and the buckle bracket 8. The guide rail 6 is arranged at the front end of the first base plate 1, and the lead screw 3 is located at the rear end of the first base plate 1. The lead screw 3 is driven by the motor 7 and is provided with a lead screw nut 412, and the lead screw 3 is arranged parallel to the guide rail 6; the two free ends of the sliding bracket 4 are respectively provided with support feet 41, one support foot 41 is fixedly connected to the lead screw nut 412, and the other support foot 41 is provided with a slider 411 for sliding on the guide rail 6;

[0022] The first membrane body is an arc-shaped membrane body, the arc segment of which is sealed with the snap-fit ​​bracket 8, and the straight segment is sealed with the left end of the first base plate 1 (in order to ensure the sealing effect, the first membrane body is sealed with the outer surface of the snap-fit ​​bracket 8, and the rotatable connecting part between the snap-fit ​​bracket 8 and the first base plate 1 is arranged on the inner side of each seal, that is, located within the encirclement of the first membrane body and the second membrane body.); the second membrane body is a rectangular membrane body, the right end of the rectangular membrane body is sealed with the outer periphery of the baffle 5, and the left end is sealed with the outer periphery of the sliding bracket 4, and the other two ends of the rectangular membrane body are correspondingly provided with sealing snap-fit ​​structures on the first base plate 1; at least one inflation port is provided on the first membrane body and the second membrane body.

[0023] When in use, the negative pressure and low pressure device is placed in the present invention, the motor 7 is turned on, and the second membrane body is driven by the sliding bracket 4 to continuously approach the buckling bracket 8 and finally seal and buckle with it, and the other two ends of the rectangular membrane body are manually sealed and buckled with the first base plate 1 (the specific structure of the above-mentioned sealing buckle is not required, and any existing technology that can achieve sealing and closing can be used, such as the buckling structure of the ziplock bag, the buckling structure of the zipper of clothes, etc.), and the safety gas is filled into the present invention through the inflation port on the second membrane body (the safety gas is preferably an inert gas, and nitrogen is particularly preferred.), if the negative pressure and low pressure device leaks, the safety gas will enter the negative pressure and low pressure device, and the protective cover will be deformed at this time, indicating the leakage. The present protective cover has a simple structure, is easy to install, and has good airtightness. It can prevent and actively prevent in advance, eliminate safety hazards, and make the equipment run more stable and reliable.

[0024] like Figure 2 and Figure 3 As shown together: In order to further improve the stability of the sliding bracket 4 pulling the second membrane to move, as a preferred technical solution, in another embodiment of the present invention, a guide rail 6 is respectively provided on both sides of the screw 3, and two sliders 411 matching the structure of the guide rail 6 are correspondingly provided on the support foot 41 connected to the screw nut 412.

[0025] As a preferred technical solution, in another embodiment of the present invention, the baffle 5 is a semicircular baffle, the sliding bracket 4 and the snap-fit ​​bracket 8 are both semicircular brackets matching the semicircular baffle, and the first membrane is a semicircular sheet.

[0026] As a preferred technical solution, in another embodiment of the present invention, the first film body and the second film body both include any one of a high temperature resistant PI polyimide film (preferably with a thickness of 0.1 mm) and a highly transparent high temperature resistant PET film (preferably with a thickness of 0.2 mm).

[0027] The above description is only a preferred embodiment of the present invention, and the directional words such as "left" and "right" used therein are for the convenience of explaining the structure of the present invention and are not used to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A protective cover for negative pressure and low pressure equipment, characterized in that: include: A first base plate (1), a second base plate (2), a lead screw (3), a sliding bracket (4), a baffle (5), a guide rail (6), a motor (7), a buckling bracket (8), a first membrane body and a second membrane body; The first bottom plate (1) is a rectangular structure, the second bottom plate (2) is fixed to the upper surface of the first bottom plate (1), and a plurality of fixing grooves (21) are provided on the surface of the second bottom plate (2); The baffle (5) is an arc-shaped baffle, the sliding bracket (4) and the buckle bracket (8) are both arc-shaped brackets matching the arc-shaped baffle, the baffle (5) is vertically fixed to the right end of the first base plate (1), the buckle bracket (8) is rotatably arranged at the left end of the first base plate (1), a sealing buckle structure is arranged on the surface opposite to the baffle (5) and the buckle bracket (8), the guide rail (6) is arranged at the front end of the first base plate (1), the lead screw (3) is located at the rear end of the first base plate (1), the lead screw (3) is driven by a motor (7) and a lead screw nut (412) is arranged on the lead screw (3), and the lead screw (3) and the guide rail (6) are arranged in parallel; two free ends of the sliding bracket (4) are respectively provided with support feet (41), one support foot (41) is fixedly connected to the lead screw nut (412), and the other support foot (41) is provided with a slider (411) for sliding on the guide rail (6); The first membrane body is an arc-shaped membrane body, the arc section of which is sealed to the buckle bracket (8), and the straight section is sealed to the left end of the first bottom plate (1); the second membrane body is a rectangular membrane body, the right end of which is sealed to the periphery of the baffle (5), and the left end is sealed to the periphery of the sliding bracket (4), and the other two ends of the rectangular membrane body are provided with corresponding sealing buckle structures on the first bottom plate (1); at least one inflation port is provided on the first membrane body and the second membrane body.

2. The protective cover for negative pressure and low pressure equipment according to claim 1, characterized in that: A guide rail (6) is provided on each side of the lead screw (3), and two sliding blocks (411) matching the structure of the guide rail (6) are correspondingly provided on the support foot (41) connected to the lead screw nut (412).

3. The protective cover for negative pressure and low pressure equipment according to claim 1, characterized in that: The baffle (5) is a semicircular baffle, the sliding bracket (4) and the snap-fit ​​bracket (8) are both semicircular brackets matching the semicircular baffle, and the first membrane body is a semicircular sheet.

4. The protective cover for negative pressure and low pressure equipment according to any one of claims 1 to 3, characterized in that: The first film body and the second film body both include any one of a high temperature resistant PI polyimide film and a highly transparent high temperature resistant PET film.

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