Machine head cover for belt conveyor

Abstract

The utility model belongs to the technical field of conveying equipment, and particularly relates to a machine head cover for a belt conveyor, which comprises a cover body, a material passing port is arranged at one end of the cover body, and a check curtain is arranged at the other end of the cover body. At least one top wall of the cover body is provided with a notch, and a net plate used for ventilation is installed at the position of at least one notch. An air curtain generating structure is installed at the end, close to the check curtain, in the top wall of the cover body, the air curtain generating structure is communicated with an air source for conveying air to the air curtain generating structure, and the air conveyed to the air curtain generating structure is blown to the bottom of the cover body to form an air curtain. The utility model aims to improve the relatively closed environment of the machine head cover through the net plate arranged at the top of the cover body; heat released during material conveying is prevented from being collected in the machine head cover; the problem that the moisture stability of the material is influenced by the dripping of condensed dew formed by cooling high-temperature water vapor is solved; the structure is simple and practicability is high.

Description

TECHNICAL FIELD

[0001] The utility model belongs to conveying equipment technical field, concretely relates to a machine head cover for belt conveyor. BACKGROUND

[0002] In the tobacco factory's silk making workshop, the material is carried out loose rehydration, cut tobacco drying, blending and other process processing, generally will adopt the conveying belt or the through -wall belt to carry out the material conveying between the loose rehydration export, cut tobacco drying cylinder, blending room and other equipment. There is a common point in the material conveying between these equipment, that is, the processed material is in the high temperature and high humidity state, and there is a cold and hot alternation when conveying.

[0003] Because the workshop production environment does not reach the constant temperature and constant humidity condition, the high temperature and high humidity material is higher in temperature and moisture after coming out from these equipment, when conveying to the downstream in the conveying belt or the through -wall belt, when passing through the belt head cover, the heat released by the material is gathered in the relatively closed head cover, and the condensation dew phenomenon is easy to produce on the inner wall of the head cover, the condensed water is gathered and exists the risk of dripping into the material, influences the stability of the material moisture or quality, and it is necessary to improve. CONTENT OF THE UTILITY MODEL

[0004] The utility model aims at providing a machine head cover for belt conveyor, which is used to solve the problem of condensation dew water caused by high temperature water vapor meeting cold in the existing head cover, which affects the stability of material moisture.

[0005] To achieve the above technical purpose, the utility model adopts the following technical scheme:

[0006] A machine head cover for belt conveyor, comprising a cover body, one end of the cover body is provided with a material passing port, the other end of the cover body is provided with a curtain; the outer edge of the material passing port is provided with a mounting wall for mounting the cover body to the designated equipment; at least one top wall of the cover body is provided with a notch, and at least one net plate for ventilation is mounted at the notch; a gas curtain generating structure is mounted at the end of the top wall of the cover body close to the curtain; the gas curtain generating structure is connected with a gas source for conveying gas; the gas conveyed to the gas curtain generating structure is blown to the bottom of the cover body to form a gas curtain.

[0007] This invention utilizes perforations in a mesh panel to allow ventilation during material transport on a belt conveyor, preventing condensation and ensuring the material's moisture content remains stable. The head cover can be constructed by cutting a notch in the top of an existing head cover and then installing a mesh panel over the notch. This improved structure is cost-effective and efficient. The baffle curtain maintains relative airtightness of the head cover, preventing excessive heat loss. Furthermore, by integrating an air curtain generation structure, a dense air curtain is formed inside the baffle curtain, providing another layer of sealing and further preventing heat exchange between the inside and outside of the cover, thus saving energy and increasing efficiency.

[0008] Further defined, the air curtain generating structure includes a channel pipe and an air distribution pipe, the air distribution pipe being connected to the channel pipe and the air source; the channel pipe has an air curtain nozzle along its length, the air jet direction of the air curtain nozzle being parallel to the curtain and facing the bottom of the cover.

[0009] This structural design is simple and can be easily integrated with the hood, making it easy to modify. Furthermore, the air curtain formed by the air jets from the air curtain nozzles can maintain a relative seal inside the hood when the curtain is pushed open by materials, reducing heat loss.

[0010] Further specifying, the gas source includes a gas delivery interface disposed on the cover, and a gas input pipe connected to both the gas delivery interface and the gas distribution pipe; the gas delivery interface is used to connect to an air pump.

[0011] Further specifying, the air curtain generating structure also includes a gas-distributing flat tube, one end of which is connected to the air distribution pipe or air source, and the other end of which extends vertically to the bottom of the hood and is horizontally connected to a connecting pipe; the inner walls of the hood are provided with rotating blowing elements connected to the connecting pipes, which are used to rotate and blow away foreign objects on the baffle. The rotating blowing elements reduce material contamination of the baffle, improving the stability and efficiency of the conveying process; moreover, the rotating blowing elements can fully utilize the air supply of the air curtain generating structure, bringing unexpected benefits.

[0012] Further defined, the rotating purging component includes a driving component, a tee connector, and a purging pipe. The first end of the tee connector is connected to the connecting pipe, and the first end of the tee connector is provided with a semi-through hole. The second end of the tee connector is connected to the purging pipe. The third end of the tee connector is connected to the output end of the driving component, and the driving component is mounted on the cover. The purging pipe has an air jet port along its length.

[0013] Further limited, the driving member includes a driver and a universal coupling, the third end of the tee joint is connected with a connecting shaft, the driver is connected with the connecting shaft through the universal coupling; the driver is a stepper motor or a pneumatic motor.

[0014] The utility model has the advantages that:

[0015] In the process of loose rehydration, cut tobacco drying, blending and other process, the cover is usually arranged on the loose rehydration outlet, cut tobacco drying drum, blending room and other equipment, and is located above the conveying belt between these equipment; the conveying belt is used for conveying materials between the equipment; the cover can reduce heat loss of the corresponding position equipment; in the process of conveying materials by the belt conveyor (or conveying belt), the cover is ventilated through the mesh plate to avoid forming condensate water and affecting the moisture content of the materials; the blocking curtain can keep the relative airtightness of the head cover to avoid excessive heat loss; meanwhile, the air curtain generating structure is arranged to form a dense air curtain on the inner side of the blocking curtain to play a sealing role, which can further avoid heat exchange between the inside and outside of the cover, save energy and increase efficiency; and the overall structure is simple, low in cost and high in practicability. BRIEF DESCRIPTION OF DRAWINGS

[0016] The utility model can be further illustrated by the non-limiting embodiments shown in the drawings.

[0017] Figure 1 FIG. 1 is a first assembly structure diagram of a head cover for a belt conveyor according to an embodiment of the utility model;

[0018] Figure 2 FIG. 2 is a second assembly structure diagram of a head cover for a belt conveyor according to an embodiment of the utility model;

[0019] Figure 3 FIG. 3 is a first structure diagram of a head cover for a belt conveyor according to an embodiment of the utility model;

[0020] Figure 4 FIG. 4 is a second structure diagram of a head cover for a belt conveyor according to an embodiment of the utility model; Figure 3 FIG. 5 is an enlarged diagram of position I in FIG. 4;

[0021] Figure 5 FIG. 6 is a top view of a head cover for a belt conveyor according to an embodiment of the utility model;

[0022] Figure 6 FIG. 7 is a structure diagram of a rotating blowing member in an embodiment of the utility model;

[0023] Figure 7 FIG. 8 is a structure diagram of a rotating blowing member in an embodiment of the utility model;

[0024] Figure 8The utility model discloses a three -way joint part's main view including rotating blowing part of the embodiment of the utility model;

[0025] Figure 9 The utility model discloses another nose cover body structure schematic view of embodiment of the utility model;

[0026] The following mainly element symbol explains as follows:

[0027] 100, conveying belt, 101, frame, 102, actuator, 200, nose cover, 201, cover body, 202, curtain, 203, mesh plate, 204, material passageway, 205, mounting wall, 300, air curtain generating structure, 301, groove pipe, 302, air distribution pipe, 303, gas input pipe, 304, gas distribution flat pipe, 305, connecting pipe, 306, rotating blowing part, 307, driver, 308, universal coupling, 309, gas delivery interface, 310, three -way joint, 311, blowing pipe, 312, plug, 313, air jet, 314, connecting shaft, 315, half through -hole. DETAILED DESCRIPTION

[0028] The utility model will carry out detailed explanation in combination with the drawings and specific embodiment, need explaining, in the drawing or the description in the description, similar or same part all use same figure number, the implementation mode that is not drawn or described in the drawing, for the form that the ordinary skill in the art knows. In addition, the direction language that the embodiment mentions, for example "on", "under", "top", "bottom", "left", "right", "front", "back" and the like, only reference the direction of drawing, and not used to limit the protection scope of the utility model.

[0029] As Figures 1-3As shown in the figure, a head cover for a belt conveyor according to an embodiment of the present invention can be installed at the loose re-moistening outlet, and on equipment such as leaf drying drums and blending rooms. The head cover 200 is located above the conveyor belt 100 used for conveying materials between these devices. The material conveyed by the conveyor belt 100 is tobacco shreds. The conveyor belt 100 can be installed and arranged via a frame 101. An actuator 102 consisting of a motor and a reducer can be installed on the frame 101 to drive the conveyor belt 100. The head cover 200 includes a cover body 201. One end of the cover body 201 is provided with a material outlet 204, and the other end of the cover body 201 is provided with a curtain 202. The curtain 202 serves to seal the head cover 200, but allows tobacco shreds to pass through when the conveyor belt 100 conveys tobacco shreds. The outer edge of the feed inlet 204 is provided with a mounting wall 205, which has screw holes for mounting and fixing, for mounting the cover 201 onto a designated device; the designated device may be a blade drying drum. The top wall of the cover 201 has a notch, at which a ventilation mesh plate 203 is installed. The mesh plate 203 has an array of holes with a diameter of 5mm and a spacing of 20mm; see [reference needed]. Figure 6 An air curtain generating structure 300 is installed inside the top wall of the cover 201 near the end of the baffle curtain 202. The air curtain generating structure 300 is connected to an air source that supplies gas to it. The gas supplied to the air curtain generating structure 300 is blown toward the bottom of the cover 201 to form an air curtain. The air curtain can seal the internal space of the cover 201 near the material inlet 204, reducing the heat loss of the blade drying drum connected to the cover 201; and it can also help enhance the sealing effect of the baffle curtain 202.

[0030] In this embodiment, the machine head cover 200 can also be welded to the loose moisture outlet or the blending room via the mounting wall 205. The air curtain generating structure 300 of this embodiment includes a channel pipe 301 and an air distribution pipe 302, with the air distribution pipe 302 connecting the channel pipe 301 and an air source. The channel pipe 301 has air curtain nozzles along its length, with the air jet direction parallel to the baffle 202 and facing the bottom of the cover 201. The air distribution pipe 302 primarily serves to deliver air to the channel pipe 301 more evenly. Air permeability is achieved through the holes in the mesh plate 203, preventing condensation and ensuring the material's moisture content is maintained. Simultaneously, the air curtain generated by the channel pipe 301 reduces the temperature difference between the inside and outside of the cover 201. This improved structure is inexpensive and effective. The curtain 202 can maintain the relative airtightness of the machine head cover 200. Combined with the set groove tube 301, a dense air curtain is formed on the inside of the curtain 202, which also plays a sealing role. This can further prevent heat exchange between the inside and outside of the cover 201, thus saving energy and increasing efficiency.

[0031] In fact, the cover 201 of the embodiment is a rectangular frame, the bottom of which is provided as a bottomless frame; two sides of the rectangular frame are provided as openings, and a curtain 202 is installed at one opening, and the other opening serves as a material passing opening 204.

[0032] As shown in Figure 9 , the cover 201 of the embodiment can also be selected according to requirements, that is, the top of the rectangular frame is provided with inclined surfaces at both ends; the inclined surfaces can be processed with notches; and a mesh plate 203 is installed in the notches to perform heat dissipation and ventilation in multiple directions.

[0033] As shown in Figure 3 , Figure 5 , the gas source includes a gas supply interface 309 provided on the cover 201, and a gas input pipe 303 connected to the gas supply interface 309 and the gas distribution pipe 302; the gas supply interface 309 can be connected to a gas pump through a pipe; a valve can be installed on the gas supply interface 309 to control the gas supply through the valve; the gas supply can also be controlled by opening and closing the gas pump.

[0034] As shown in Figure 3 , Figure 4 , the gas curtain generating structure 300 further includes a gas distribution flat pipe 304, one end of which is connected to the gas distribution pipe 302, and the other end of which extends vertically to the bottom of the cover 201 and is horizontally connected to a connecting pipe 305; the gas distribution flat pipe 304 is arranged on the inner wall of the cover 201 in two rows; the inner wall of the cover 201 is provided with a rotating blowing member 306 connected to the connecting pipe 305, which is used to rotate and blow off foreign matter on the curtain 202. The foreign matter on the curtain 202 is the tobacco that is adhered to the curtain 202 during conveying. The rotating blowing member 306 of the embodiment rotates ninety degrees back and forth to blow off the curtain 202; it can reduce the possibility of the curtain 202 being adhered by the material, improve the ability of the mouth cover 200 to operate stably for a long time, and improve the stability and efficiency of the conveying; and the rotating blowing member 306 can fully utilize the gas supply of the gas curtain generating structure 300, and the consistency of the power source is high.

[0035] In fact, one end of the gas distribution flat pipe 304 in the embodiment can be directly connected to the gas input pipe 303 of the gas source or a pipe connected to the gas pump.

[0036] As shown in Figure 5 , Figure 7 and Figure 8As shown, in the embodiment, the rotating purging member 306 comprises a driving member, a tee joint 310 and a purging pipe 311; the purging pipe 311 is provided with a jet port 313 along its length direction; the purging pipe 311 has a structure similar to the groove pipe 301. The driving member comprises a driver 307 and a universal coupling 308; the third end of the tee joint 310 is connected with a connecting shaft 314, and the driver 307 is connected with the connecting shaft 314 through the universal coupling 308; the first end of the tee joint 310 is connected with the connecting pipe 305, and the first end of the tee joint 310 is provided with a half hole 315; the half hole 315 is provided with a half hole at the opposite position of the end of the connecting pipe 305; when the purging pipe 311 is rotated to the vertical state, the half hole of the connecting pipe 305 is staggered with the half hole 315 of the first end of the tee joint 310, and cannot be ventilated; when the purging pipe 311 is rotated from the vertical state, the half hole of the connecting pipe 305 starts to be connected with the half hole 315 of the first end of the tee joint 310, and can be ventilated; the second end of the tee joint 310 is connected with the purging pipe 311, and the end of the purging pipe 311 is provided with a plug 312; the connecting shaft 314 connected with the third end of the tee joint 310 is solid, and can block the tee joint 310.

[0037] In fact, in the embodiment, a control valve can be installed on the connecting pipe 305 or the gas distribution flat pipe 304, to control the ventilation of the purging pipe 311; in addition, the driver 307 is a stepping motor, which is installed on the cover 201; the output end of the stepping motor is connected with the universal coupling 308, the universal coupling 308 transmits power to the connecting shaft 314 of the tee joint 310, the connecting shaft 314 of the tee joint 310 rotates to drive the purging pipe 311 to rotate, and the rotating action is divided into: vertical state to horizontal state, and horizontal state to vertical state; similar to the action of the automobile wiper.

[0038] In fact, in the embodiment, the driver 307 can be selected as a pneumatic motor. The purging pipe 311 is driven to rotate by the pneumatic motor. A bevel gear set can also be installed on the output shaft of the pneumatic motor, i.e. the connecting shaft 314, to replace the universal coupling 308 to transmit power.

[0039] In the embodiment, the plug 312 can not be installed at the end of the purging pipe 311, and the end of the purging pipe 311 can also be purged.

[0040] The structure design can avoid forming condensate water on the inner wall of the head cover 200, influence the moisture content of the material, or produce spot smoke in the process of the belt conveyor (or the conveying belt 100) conveying the material, and can keep the relative airtightness of the head cover 200 by the baffle curtain 202, avoid excessive heat loss, form a dense air curtain on the inner side of the baffle curtain 202 by the air curtain generating structure 300, play a sealing role, further avoid heat exchange between the inside and outside of the cover 201, save energy and increase efficiency, and improve the period and efficiency of the material conveying by blowing the baffle curtain 202 by the rotating blowing member 306.

[0041] The head cover for the belt conveyor is described in detail above. The description of the specific embodiments is only used to help understand the method and the core idea of the head cover for the belt conveyor. It should be pointed out that, for ordinary skilled persons in the technical field, the head cover for the belt conveyor can be improved and modified on the premise of not departing from the principle of the head cover for the belt conveyor, and these improvements and modifications also fall within the protection scope of the head cover for the belt conveyor.

Claims

1. A head cover for a belt conveyor, comprising a cover body (201), one end of the cover body (201) being provided with a material passing opening (204), and the other end of the cover body (201) being provided with a baffle curtain (202); characterized in that, At least one top wall of the cover body (201) is provided with a notch, and at least one mesh plate (203) for ventilation is arranged at the notch; a gas curtain generating structure (300) is arranged at one end of the top wall of the cover body (201) and close to the curtain (202), the gas curtain generating structure (300) is connected with a gas source for supplying gas, and the gas supplied to the gas curtain generating structure (300) is blown to the bottom of the cover body (201) to form a gas curtain.

2. A head cover for a belt conveyor as claimed in claim 1, characterized in that: The gas curtain generating structure (300) comprises a groove pipe (301) and a gas distribution pipe (302), the gas distribution pipe (302) is connected with the groove pipe (301) and the gas source; the groove pipe (301) is provided with a gas curtain jet opening along the length direction of the groove pipe (301), and the jet direction of the gas curtain jet opening is parallel to the curtain (202) and towards the bottom of the cover body (201).

3. A head cover for a belt conveyor as claimed in claim 2, characterized in that: The gas source comprises a gas supply interface (309) arranged on the cover body (201), and a gas input pipe (303) connected with the gas supply interface (309) and the gas distribution pipe (302); the gas supply interface (309) is used for connecting a gas pump.

4. The head cover for a belt conveyor according to claim 2, characterized in that: The gas curtain generating structure (300) further comprises a gas distribution flat pipe (304), one end of the gas distribution flat pipe (304) is connected with the gas distribution pipe (302) or the gas source, the other end of the gas distribution flat pipe (304) extends vertically to the bottom of the cover body (201) and is horizontally connected with a connecting pipe (305); the inner wall of the cover body (201) is provided with a rotating blowing member (306) connected with the connecting pipe (305) on both sides, and the rotating blowing member (306) is used for rotating and blowing off foreign matters on the curtain (202).

5. A head shield for a belt conveyor as claimed in claim 4, characterized in that: The rotating blowing member (306) comprises a driving member, a tee joint (310) and a blowing pipe (311), the first end of the tee joint (310) is connected with the connecting pipe (305), and the first end of the tee joint (310) is provided with a half-through hole (315); the second end of the tee joint (310) is connected with the blowing pipe (311); the third end of the tee joint (310) is connected with the output end of the driving member, and the driving member is arranged on the cover body (201); the blowing pipe (311) is provided with a jet opening (313) along the length direction of the blowing pipe (311).

6. A head shield for a belt conveyor as claimed in claim 5, characterized in that: The driving member comprises a driver (307) and a universal coupling (308), and the third end of the tee joint (310) is connected with a connecting shaft (314), and the driver (307) is connected with the connecting shaft (314) through the universal coupling (308).

7. A head shield for a belt conveyor as claimed in claim 6, characterized in that: The driver (307) is a stepping motor or a pneumatic motor.

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