Positive pressure type anti-explosion label printer

Abstract

The utility model relates to the technical field of anti-explosion printers, in particular to a positive pressure type anti-explosion label printer which comprises an upper machine box body, a label printer body is installed at the inner bottom of the upper machine box body, a paper outlet guide groove is formed in the front end of the label printer body, and a lower machine box body is fixed to the bottom of the upper machine box body. An anti-explosion mute fresh air centrifugal fan is fixed in the lower machine box body and used for conveying fresh air to the upper machine box body, the anti-explosion mute fresh air centrifugal fan is communicated with the air bag body and is fixedly provided with a connecting pipe, and an anti-explosion positive pressure controller is fixed in the lower machine box body and used for maintaining the air pressure in the upper machine box body to be higher than the outside. According to the utility model, air is pumped into the upper machine box body through the anti-explosion mute fresh air centrifugal fan, so that the air pressure in the upper machine box body is greater than the external air pressure, external flammable and explosive gases and substances are prevented from entering the box body, and the printing requirements of daily production in flammable and explosive environments such as petroleum, chemical engineering, mines and the like are met.

Description

Technical Field

[0001] The utility model relates to the technical field of explosion-proof printers, in particular to a positive pressure explosion-proof label printer. Background Art

[0002] In flammable and explosive environments such as petroleum, chemical, and mining industries, ordinary label printers may explode due to electric sparks or external flammable and explosive gases and substances entering the printer, seriously threatening the safety of personnel and production facilities. Most explosion-proof label printer chassis are made of stainless steel or carbon steel. By maintaining the pressure of the internal protective gas higher than the pressure of the surrounding explosive gas environment, it prevents the external explosive gas mixture from entering the printer chassis.

[0003] During the actual use of explosion-proof label printers, the paper guide slot cover at the front end of the paper output guide slot on the printer is generally sealed with a sealing gasket. The sealing gasket will be affected by thermal expansion and contraction. When the printer is in an environment with a large temperature difference, a gap will form between the chassis and the sealing gasket. The gas in the chassis will be lost little by little, resulting in a decrease in the internal air pressure of the chassis. In addition, it is not easy to maintain the high-pressure environment inside the chassis of most explosion-proof label printers in combination with the sealing protection of the chassis to simplify the device and save costs. Utility Model Content

[0004] The purpose of the present utility model is to provide a positive pressure explosion-proof label printer to solve the problems raised in the above background technology.

[0005] To achieve the above objectives, the present invention provides the following technical solutions:

[0006] Positive pressure explosion-proof label printer, including:

[0007] An upper chassis, wherein a label printer is installed at the inner bottom of the upper chassis, a paper output guide groove is provided at the front end of the label printer, a paper guide groove cover is hingedly connected to the outer side of the paper output guide groove, an airbag is fixed to the inner side of the paper guide groove cover, a sealing gasket is fixed to the outer side of the airbag, and a printer adapter is fixed inside the upper chassis;

[0008] A welding beam, welded and fixed to the inner bottom of the upper chassis, for supporting and fixing the label printer;

[0009] The lower chassis is fixedly connected to the bottom of the upper chassis;

[0010] An explosion-proof and silent fresh air centrifugal fan is fixed inside the lower chassis and is used to deliver fresh air to the upper chassis. The explosion-proof and silent fresh air centrifugal fan is connected to the airbag body and is fixed with a connecting pipe;

[0011] Explosion-proof positive pressure controller, used to maintain the internal air pressure of the upper chassis higher than the external pressure.

[0012] Furthermore, an explosion-proof junction box is fixed inside the upper chassis, a wind pressure transmitter is arranged below the explosion-proof junction box, and an explosion-proof sound and light alarm lamp is fixed on the top of the upper chassis.

[0013] Furthermore, a hanging plate is embedded and fixed on the front side of the upper chassis, a touch screen is fixed on the outer side of the hanging plate, and a touch screen adapter is fixed inside the upper chassis.

[0014] Furthermore, an upper box door panel is hinged on the outer side of the upper box body, a protective door is hinged on the middle part of the upper box door panel, and a glass pressure frame and a rainproof frame are installed between the protective door and the upper box body.

[0015] Furthermore, the bottom of the upper chassis is electrically connected to two explosion-proof cable connectors, and the bottom of the upper chassis is installed with an automatic exhaust valve connected to the outdoors.

[0016] The invention further comprises: a supporting plate is fixed on the top of the welding beam, and a printer label paper is rotated on the top of the supporting plate.

[0017] Furthermore, a plurality of Forma wheels are fixed to the bottom surface of the lower chassis, and an air duct opening connected to an explosion-proof silent fresh air centrifugal fan is fixedly installed on one side of the lower chassis.

[0018] Compared with the prior art, the beneficial effects of the present invention are:

[0019] 1. The centrifugal force generated by the rotation of the explosion-proof silent fresh air centrifugal fan delivers the purified air to the interior of the upper chassis, keeping the interior of the upper chassis in a positive pressure state, preventing external flammable and explosive gases and substances from entering the interior of the chassis, and can meet the daily production printing requirements in flammable and explosive environments such as petroleum, chemical, and mining.

[0020] 2. An airbag is fixed on the inner side of the paper guide slot cover, and a sealing gasket is fixed on the outer side of the airbag. When the paper guide slot cover is closed to seal the paper output guide slot, the airbag is squeezed between the paper guide slot cover and the upper chassis, so that the sealing gasket can be tightly abutted between the paper guide slot cover and the upper chassis, which to a certain extent prevents the sealing gasket from being affected by thermal expansion and contraction and forming a gap between the sealing gasket and the upper chassis, which is beneficial to improving the sealing performance of the upper chassis.

[0021] 3. The airbag is connected and fixed to the explosion-proof silent fresh air centrifugal fan through a connecting pipe. When the air volume inside the airbag is reduced due to long-term use, the explosion-proof silent fresh air centrifugal fan can pump an appropriate amount of gas to the airbag through the connecting pipe to keep the airbag filled, so that the sealing gasket can be tightly arranged between the paper guide slot cover and the upper chassis for a long time, further improving the sealing of the upper chassis, and also facilitating the maintenance of the high-pressure environment inside the explosion-proof label printer chassis and the sealing gasket protection of the chassis, simplifying the device and saving costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 This utility model is the main view Figure 1 ;

[0023] Figure 2 This utility model is the main view Figure 2 ;

[0024] Figure 3 This utility model Figure 1 Middle AA section view;

[0025] Figure 4 It is the right side view of the utility model;

[0026] Figure 5 It is the left view of the utility model;

[0027] Figure 6 It is a schematic diagram of the airbag body and structure in the utility model.

[0028] In the figure: 100, upper chassis; 110, label printer; 120, paper output guide slot; 121, paper guide slot cover; 122, airbag body; 1221, sealing gasket; 130, printer adapter; 140, explosion-proof junction box; 141, wind pressure transmitter; 150, explosion-proof sound and light alarm light; 160, hanging board; 161, touch screen; 162, touch screen adapter; 170, upper door panel; 171, protective door; 1712, glass pressure frame; 1713, rainproof frame; 180, explosion-proof cable connector; 190, automatic exhaust valve; 200, welding beam; 210, support plate; 211, printer label paper; 300, lower chassis; 400, explosion-proof silent fresh air centrifugal fan; 410, air duct outlet; 500, explosion-proof positive pressure controller. DETAILED DESCRIPTION

[0029] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0030] See also Figure 1 、 Figure 2 、 Figure 3 and Figure 6 The embodiment of the present invention provides a positive pressure explosion-proof label printer, comprising an upper chassis 100, a welding beam 200, a lower chassis 300, an explosion-proof silent fresh air centrifugal fan 400 and an explosion-proof positive pressure controller 500. A label printer 110 is installed at the inner bottom of the upper chassis 100. The front end of the label printer 110 is provided with a paper output guide groove 120. The outer side of the paper output guide groove 120 is hinged with a paper guide groove cover 121. An airbag body 122 is fixed to the inner side of the paper guide groove cover 121. A sealing gasket 1221 is fixed to the outer side of the airbag body 122. The upper chassis 10 0 is fixed with a printer adapter 130 inside; the welding beam 200 is welded and fixed to the inner bottom of the upper chassis 100, for supporting and fixing the label printer 110; the lower chassis 300 is fixedly connected to the bottom of the upper chassis 100; the explosion-proof and silent fresh air centrifugal fan 400 is fixed inside the lower chassis 300, for delivering fresh air to the upper chassis 100, and the explosion-proof and silent fresh air centrifugal fan 400 is connected to the airbag body 122 and is fixed with a connecting pipe; the explosion-proof positive pressure controller 500 is installed inside the lower chassis 300, for maintaining the air pressure inside the upper chassis higher than the outside air pressure.

[0031] Specifically, the air is pumped into the upper chassis 100 through the explosion-proof silent fresh air centrifugal fan 400, so that the air pressure inside the upper chassis 100 is greater than the external air pressure, preventing external flammable and explosive gases and substances from entering the interior of the chassis 100, and meeting the printing requirements of daily production in flammable and explosive environments such as petroleum, chemical, and mining. During the operation of the explosion-proof silent fresh air centrifugal fan 400, part of the gas will be transported to the airbag 122 through the connecting pipe, and the expanded airbag 122 will tightly squeeze the sealing gasket 1221 between the paper output guide groove 120 and the paper guide groove cover 121, which is beneficial to improve the sealing of the explosion-proof label printer 110 chassis.

[0032] like Figure 3 As shown, in this embodiment, an explosion-proof junction box 140 is fixed inside the upper chassis 100, a wind pressure transmitter 141 is arranged below the explosion-proof junction box 140, and an explosion-proof sound and light alarm lamp 150 is fixed on the top of the upper chassis 100.

[0033] In this embodiment, the explosion-proof junction box 140 is made of explosion-proof stainless steel or carbon steel to prevent explosions at the terminal. The wind pressure transmitter 141 is a conventional component that can accurately measure the wind pressure inside or outside the explosion-proof label printer 110. By continuously monitoring changes in wind pressure, the printer can be ensured to operate in normal working conditions, avoiding equipment failures or safety risks caused by abnormal wind pressure.

[0034] In this embodiment, when potential dangers or abnormal conditions occur inside the explosion-proof label printer 110 or in its working environment, such as overtemperature, gas leakage, mechanical failure, etc., the explosion-proof sound and light alarm light 150 can respond quickly by emitting a high-decibel alarm sound and eye-catching light to promptly remind the operator to pay attention and take corresponding countermeasures.

[0035] like Figure 2 and Figure 3 As shown, in this embodiment, a hanging plate 160 is embedded and fixed on the front side of the upper chassis 100, a touch screen 161 is fixed on the outside of the hanging plate 160, and a touch screen adapter 162 is fixed inside the upper chassis 100. The user can operate the label printer 110 on the touch screen 161 to meet the user's daily touch-control needs.

[0036] like Figure 1 As shown, in this embodiment, an upper door panel 170 is hinged on the outer side of the upper case body 100, a protective door 171 is hinged on the middle part of the upper door panel 170, and a glass pressure frame 1712 and a rainproof frame 1713 are installed between the protective door 171 and the upper case body 100.

[0037] In this embodiment, the protective door 171 can effectively protect the touch screen 161. When using the touch screen 161, the protective door 171 can be opened. The glass pressure frame 1712 and the rainproof frame 1713 on the inside of the protective door 171 can effectively prevent external water, such as water vapor inside the mine during mining, from leaking to the touch screen 161.

[0038] like Figure 2 As shown, in this embodiment, the bottom of the upper chassis 100 is electrically connected to two explosion-proof cable connectors 180 , and an automatic exhaust valve 190 communicating with the outdoors is installed at the bottom of the upper chassis 100 .

[0039] In this embodiment, the explosion-proof cable connector 180 improves the safety of the connection terminal, and the automatic exhaust valve 190 can release the excessive air pressure inside the chassis of the label printer 110 to maintain the stability of the air pressure inside the chassis of the label printer 110.

[0040] like Figure 3 As shown, in this embodiment, a support plate 210 is fixed on the top of the welding beam 200, and a printer label paper 211 is rotated on the top of the support plate 210.

[0041] In this embodiment, the support plate 210 enables the label printer 110 to be fixed inside the upper chassis 100, and the printer label paper 211 is used to convey label paper to the label printer 110, wherein the label printer 110 is existing technology and the specific printing principle is not described in detail.

[0042] like Figure 2 and Figure 4 As shown, in this embodiment, a plurality of Forma wheels are fixed to the bottom surface of the lower chassis 300 , and an air duct opening 410 connected to the explosion-proof silent fresh air centrifugal fan 400 is fixed on one side of the lower chassis 300 .

[0043] In this embodiment, the Forma wheel is used to move the positive pressure explosion-proof label printer 110, and can fix the label printer 110 after the move to the installation position. The air duct mouth 410 is installed with a filter structure such as a filter screen and activated carbon for filtering and purifying the air. The air duct mouth 410 facilitates the delivery of air to the explosion-proof silent fresh air centrifugal fan 400.

[0044] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention can be implemented in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations within the meaning and range of equivalents of the claims are intended to be encompassed within the present invention. Any reference sign in a claim should not be construed as limiting the claim to which it relates.

[0045] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. Positive pressure explosion-proof label printer, characterized by: include: An upper chassis (100), a label printer (110) is installed at the inner bottom of the upper chassis (100), a paper output guide groove (120) is provided at the front end of the label printer (110), a paper guide groove cover (121) is hingedly connected to the outer side of the paper output guide groove (120), an air bag (122) is fixed to the inner side of the paper guide groove cover (121), a sealing gasket (1221) is fixed to the outer side of the air bag (122), and a printer adapter (130) is fixed inside the upper chassis (100); A welding beam (200) is welded and fixed to the inner bottom of the upper chassis (100) and is used to support and fix the label printer (110); A lower chassis (300) is fixedly connected to the bottom of the upper chassis (100); An explosion-proof and silent fresh air centrifugal fan (400) is fixed inside the lower chassis (300) and is used to transport fresh air to the upper chassis (100). The explosion-proof and silent fresh air centrifugal fan (400) is connected to the airbag body (122) and is fixed with a connecting pipe; The explosion-proof positive pressure controller (500) is used to maintain the internal air pressure of the upper chassis (100) higher than the external air pressure.

2. The positive pressure explosion-proof label printer according to claim 1, characterized in that: An explosion-proof junction box (140) is fixed inside the upper case (100), a wind pressure transmitter (141) is arranged below the explosion-proof junction box (140), and an explosion-proof sound and light alarm lamp (150) is fixed on the top of the upper case (100).

3. The positive pressure explosion-proof label printer according to claim 1, characterized in that: A hanging plate (160) is embedded and fixed on the front side of the upper chassis (100), a touch screen (161) is fixed on the outside of the hanging plate (160), and a touch screen adapter (162) is fixed inside the upper chassis (100).

4. The positive pressure explosion-proof label printer according to claim 1, characterized in that: An upper box door panel (170) is hinged on the outer side of the upper box body (100), a protective door (171) is hinged on the middle part of the upper box door panel (170), and a glass pressure frame (1712) and a rainproof frame (1713) are installed between the protective door (171) and the upper box body (100).

5. The positive pressure explosion-proof label printer according to claim 1, characterized in that: The bottom of the upper case (100) is electrically connected to two explosion-proof cable connectors (180), and the bottom of the upper case (100) is installed with an automatic exhaust valve (190) that is in communication with the outdoors.

6. The positive pressure explosion-proof label printer according to claim 1, characterized in that: A supporting plate (210) is fixed on the top of the welding beam (200), and a printer label paper (211) is rotated on the top of the supporting plate (210).

7. The positive pressure explosion-proof label printer according to claim 1, characterized in that: A plurality of Forma wheels are fixed to the bottom surface of the lower chassis (300), and an air duct opening (410) communicating with an explosion-proof silent fresh air centrifugal fan (400) is fixedly installed on one side of the lower chassis (300).

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