Composite spiral mesh belt conveying equipment

Abstract

The utility model relates to composite spiral mesh belt conveying equipment. The problems that due to the fact that a spiral track is iced or serious oil accumulation exists in the track, local deformation of a rotary drum is too large, serious mechanical faults such as off tracking, belt stacking, belt turning and even belt tearing and breaking happen to a conveying belt, and the production efficiency is greatly influenced are solved. Oil dirt and stains are accumulated on an inner guide rail, cleaning is difficult, great friction force is generated when the guide rail makes contact with a mesh belt, the operation power is increased, and meanwhile sanitation and safety of food are affected. According to the technical scheme, the self-supporting mesh belt conveyor is composed of a self-supporting main transmission mechanism, an auxiliary conveying mesh belt mechanism and an auxiliary belt returning mechanism. The food conveying device is suitable for conveying quick-frozen food and steamed and baked food.

Description

Technical Field

[0001] The utility model relates to the technical field of food conveying equipment, in particular to a composite spiral mesh belt transmission equipment. Background Art

[0002] At present, in food conveying machinery, especially in food quick-frozen and steaming and baking machinery, the food conveying form generally adopts the transmission form of spiral mesh belt. Spiral mesh belt transmission is the form in which the conveyor belt moves along a spiral trajectory to transport goods. The spiral mesh belt transmission form currently commonly used is mainly based on drum transmission and supplemented by mesh belt tensioning device. The conveyor belt is scattered and wound on the surface of the drum along the axial spiral distribution guide rail. The reduction motor drives the drum to rotate and drives the conveyor belt to move spirally along the drum and the guide rail through the action of friction. The auxiliary tensioning device makes the conveyor belt tensile on the outside and compressed on the inside. However, under actual working conditions, when the conveyor belt moves spirally around the drum, a very large friction force will be generated between the drum and the belt. This friction force forces the belt stress to increase. At the same time, due to problems such as overload of cargo transportation, speed matching problems between the tensioning motor and the drum motor, icing of the spiral track or serious oil accumulation on the track, the local deformation of the drum will be too large, and the conveyor belt will have serious mechanical failures such as deviation, belt stacking and belt flipping, and even belt tearing, which greatly affects production efficiency. Secondly, it is used to support the spiral guide rails of the spiral conveyor belt. Generally, there are more than two spiral supports, especially for steamed, baked, quick-frozen and fried foods. Grease and dirt will accumulate on the guide rails, making them difficult to clean. The contact between the guide rails and the mesh belt generates great friction, which increases the operating power and affects the hygiene and safety of the food. Utility Model Content

[0003] The purpose of the utility model is to propose a composite spiral mesh belt transmission equipment to solve the problems existing in the background technology: under actual working conditions, when the conveyor belt moves spirally around the drum, a very large friction force will be generated between the drum and the belt. This friction force forces the belt stress to increase. At the same time, due to the overload of cargo transportation, the speed matching problem between the tensioning motor and the drum motor, the icing of the spiral track or the serious oil accumulation on the track, the local deformation of the drum will be too large, and the conveyor belt will have serious mechanical failures such as deviation, belt stacking, belt flipping and even belt tearing, which greatly affects the production efficiency. Secondly, the spiral used for the spiral conveyor belt support generally has more than two inner and outer guide rails for support, especially for steaming, baking and quick-frozen fried foods. Oil stains will accumulate on the inner guide rail and are difficult to clean. The contact between the guide rail and the mesh belt generates a huge friction force, which increases the operating power and affects the hygiene and safety of the food. The technical solution adopted to solve the technical problem is: a composite spiral mesh belt transmission equipment, characterized in that it is composed of a self-supporting main transmission mechanism, an auxiliary conveying mesh belt mechanism and an auxiliary return belt mechanism; the self-supporting main transmission mechanism is supported on the support frame by the central axis of the central drum through the central bearing, the central axis connected to the power drives the central drum to rotate, the central drum is a cylinder, the friction strip is assembled on the outermost circle of the central drum, the first guide rail is arranged at the bottom of the central drum, supported on the support frame, its spiral diameter is larger than the outermost diameter of the central drum, and is spirally wound around the bottom end of the first circle of the spiral conveying positive transmission based on the pitch of the self-supporting spiral conveyor belt, used to support and guide the self-supporting spiral conveyor belt, the second guide rail is arranged on the support frame outside the self-supporting spiral conveyor belt, and is spirally wound around the spiral path of the self-supporting spiral conveyor belt to support the outer side of the self-supporting spiral conveyor belt, the inner side of the self-supporting spiral mesh belt is connected to a plurality of inner horseshoes through a through shaft, a plurality of support limit seats are continuously or spaced on the plurality of inner horseshoes, the outer side of the self-supporting spiral mesh belt is connected to the outer horseshoe through a through shaft, and the friction strip is connected to the inner side of the self-supporting spiral mesh belt. The auxiliary conveying mesh belt mechanism is arranged at the top discharge end of the self-supporting spiral conveyor belt, the auxiliary transmission shaft is arranged on the bearing seats on both sides of the support frame of the discharge end, the auxiliary transmission motor drives the auxiliary transmission shaft to rotate, the auxiliary transmission shaft is provided with an outer gear meshing with the outer horseshoe, and the auxiliary transmission shaft is also provided with a mesh belt inner side supporting free roller to form the inner roller of the self-supporting spiral mesh belt; the auxiliary return belt mechanism is fixed to the support frame by a free wheel positioning drum arranged at the bottom of the center drum and coincident with its axis, the free wheel positioning drum is embedded in the inner ring of the bottom free wheel for rotation center positioning, a plurality of supporting rollers are arranged on the support frame below the bottom free wheel to support the rotation of the bottom free wheel, a free wheel driving mechanism connected to the power is arranged on the support frame, and a preload device is arranged radially on the roller of the free wheel driving mechanism, so that the outer ring of the roller on the free wheel driving mechanism is close to the inner ring of the bottom free wheel, and the bottom free wheel and the center drum are driven to rotate in the opposite direction through friction drive, and the outer ring of the bottom free wheel friction drives the inner side of the self-supporting spiral mesh belt to assist the self-supporting spiral conveyor belt to return to the feeding port.The outer ring of the bottom free wheel is a C-shaped groove section. The inner and outer diameters of the C-shaped groove of the outer ring of the bottom free wheel are equal to the outer diameter of the outermost ring of the center drum. The bottom free wheel rotates in the opposite direction to the center drum with the center drum as the axis. The center drum is surrounded by the outer plate of the drum to form a cylinder, and the friction strip is assembled on the outer plate of the drum to form the outermost ring of the center drum.

[0004] Compared with the background technology, the beneficial effects of the utility model are as follows: due to the adoption of the above technical scheme, first, the self-supporting spiral conveyor belt is axially wound around the outer side of the center drum in a self-supporting manner, and the main spiral transmission is carried out by frictionally contacting the friction strip of the center drum through the inner shaft of the conveyor belt. The inner side of the self-supporting spiral conveyor belt defines the spiral trajectory of the entire spiral transmission in a self-supporting manner, preventing the occurrence of partial belt turning over of the mesh belt, omitting the support track on the inner side of the traditional drum spiral mesh belt, reducing the friction resistance between the spiral conveyor belt and the track, and at the same time eliminating the accumulation of various dirt caused by the conveying materials on the internal guide rail, aiming to achieve a transmission of the spiral conveyor belt with the minimum friction driving force, thereby reducing power consumption and component wear, and solving the problem of the traditional spiral drum being polluted by the internal support, thereby affecting food safety and hygiene. Second, the auxiliary conveying mesh belt mechanism adopts a single outer meshing to drive the outer side of the conveyor belt for tightening, so that the inner side of the self-supporting spiral conveyor belt is tightened by the friction strip on the center drum with a certain tension force, preventing the damage of the center drum caused by excessive tension force. Third, the auxiliary rewinding mechanism adopts an independent friction drive mechanism to carry out rewinding conveying in the opposite direction of the drum, eliminating the force on the drum during the spiral conveying rewinding. This independent rewinding mechanism that does not rely on the central drum can realize the diversified layout of the feeding and discharging ends. BRIEF DESCRIPTION OF THE DRAWINGS

[0005] Figure 1 It is an isometric schematic diagram of the utility model;

[0006] Figure 2 It is an isometric partial schematic diagram of the utility model;

[0007] Figure 3 This is a schematic diagram of the self-supporting spiral conveyor belt in the utility model;

[0008] Figure 4 This is a schematic diagram of the auxiliary conveying mesh belt mechanism in the utility model;

[0009] Figure 5 It is an isometric schematic diagram of the auxiliary belt-returning mechanism in the utility model;

[0010] Figure 6 A schematic cross-sectional view of the auxiliary rewinding mechanism in the utility model; DETAILED DESCRIPTION

[0011] Example 1: Reference Figure 1 , Figure 2 , Figure 3 、 Figure 4 、 Figure 5 、 Figure 6A composite spiral mesh belt transmission device, characterized in that it is composed of a self-supporting main transmission mechanism, an auxiliary conveying mesh belt mechanism and an auxiliary return belt mechanism; the self-supporting main transmission mechanism is supported on a support frame 101 by a central shaft 111 of a central drum 103 through a central bearing 107, and the central shaft 111 connected to the power drives the central drum 103 to rotate. The central drum 103 is a cylinder, and a friction strip 106 is assembled on the outermost circle of the central drum 103. The first guide rail 108 is arranged at the bottom of the central drum 103 and supported on the support frame 101. The spiral diameter is larger than the outermost diameter of the central drum 103, and the self-supporting spiral conveyor belt 102 is spirally wound on the bottom end of the first circle of the spiral conveyor forward transmission based on the pitch of the self-supporting spiral conveyor belt 102, which is used to support and guide A self-supporting spiral conveyor belt 102, a second guide rail 112 is arranged on a support frame 101 on the outer side 110 of the self-supporting spiral conveyor belt, and the spiral path of the self-supporting spiral conveyor belt 102 is spirally wound to support the outer side 110 of the self-supporting spiral conveyor belt, the inner side 109 of the self-supporting spiral mesh belt is connected to a plurality of inner horseshoes 114 through a through shaft 115, and a plurality of support limit seats 113 are continuously or intermittently arranged on the plurality of inner horseshoes 114, the outer side 110 of the self-supporting spiral mesh belt is connected to the outer horseshoe 116 through a through shaft 115, and the friction strip 106 contacts the through shaft 115 on the inner side 109 of the self-supporting spiral mesh belt for friction driving; the auxiliary conveying mesh belt mechanism 104 is arranged at the top discharge end of the self-supporting spiral conveyor belt 102, and the auxiliary transmission shaft 203 is arranged on the bearing seats 202 on both sides of the support frame 101 at the discharge end, the auxiliary transmission motor 201 drives the auxiliary transmission shaft 203 to rotate, and the auxiliary transmission shaft 203 is provided with an outer gear 204 meshing with the outer horseshoe 116, and the auxiliary transmission shaft 203 is also provided with a mesh belt inner side supporting free roller 205 to form a self-supporting spiral mesh belt inner side 109 roller; the auxiliary belt return mechanism is fixed to the support frame 101 by a free wheel positioning drum 304 arranged at the bottom of the center drum 103 and coincident with its axis, and the free wheel positioning drum 304 is embedded in the inner ring of the bottom free wheel 301 for rotation center positioning, and a plurality of support rollers 303 are arranged on the support frame 101 below the bottom free wheel 301 to support the bottom free wheel 301 The freewheel driving mechanism 302 connected to the power is arranged on the supporting frame 101, and the roller on the freewheel driving mechanism 302 is radially provided with a preload device, so that the outer ring of the roller on the freewheel driving mechanism 302 is close to the inner ring of the bottom freewheel 301, and the bottom freewheel 301 and the center drum 103 are driven to rotate in the opposite direction by friction, and the outer ring of the bottom freewheel 301 friction drives the inner side 109 of the self-supporting spiral mesh belt to assist the self-supporting spiral conveyor belt 102 to return to the feed inlet; the outer ring of the bottom freewheel 301 is a C-shaped groove section; the inner and outer diameters of the C-shaped groove of the outer ring of the bottom freewheel 301 are equal to the outer diameter of the outermost ring of the center drum 103, and the bottom freewheel 301 rotates in the opposite direction to the center drum 103 with the center drum 103 as the axis;The central drum 103 is surrounded by the drum peripheral plate 105 to form a cylinder, and the friction strip 106 is assembled on the drum peripheral plate 105 to form the outermost circle of the central drum 103. ;

[0012] The working mechanism of the above-mentioned composite spiral mesh belt transmission equipment is as follows: when the central shaft 111 connected to the power rotates, the central drum 103 is driven to rotate, and the friction strip 106 on the central drum 103 rotates to drive the through shaft 115 on the inner side 109 of the self-supporting spiral mesh belt through friction, thereby frictionally driving the entire self-supporting spiral conveyor belt 102 to convey; when the self-supporting spiral conveyor belt 102 near the feeding end is conveyed to the lower end of the central drum 103 for friction driving, the self-supporting spiral conveyor belt 102 relies on the first guide rail 108 to support and guide the self-supporting spiral conveyor belt 102 to complete the self-supporting spiral conveyor belt 102. The pitch of the spiral conveyor belt 102 is quasi-helical and is wound around the first circle of the forward transmission of the spiral conveyor belt; when the first circle of the forward transmission of the spiral conveyor belt is completed, the second circle, the third circle... until the top circle of the entire transmission is supported by the first circle of the self-supporting spiral conveyor belt 102 The second circle of the self-supporting spiral conveyor belt 102 supports the third circle of the self-supporting spiral conveyor belt 102... During the entire transmission process, the next circle supports the previous circle; at the same time, during the entire transmission process of the self-supporting spiral conveyor belt 102, the outer side 110 relies on the second guide rail 112 for support; when When the self-supporting spiral conveyor belt 102 is conveyed by friction drive, in order to prevent the mesh belt from piling up or the situation where the through shaft 115 has no contact with the friction strip 106, the auxiliary conveying mesh belt mechanism 104 is used to tighten the outer side 110 of the self-supporting spiral conveyor belt 102, so that the through shaft 115 on the inner side 109 of the self-supporting spiral mesh belt contacts with the friction strip 106 and there is a certain pressure, and then the friction drive completes the whole self-supporting spiral conveyor belt 102 conveying forward main drive; when the self-supporting spiral conveyor belt 102 is brought back to the auxiliary return mechanism The free-wheel driving mechanism 302 connected to the power drives the bottom free wheel 301 and the center drum 103 to rotate in the opposite direction through friction drive. During the entire rewinding process, the support limit seat 113 on the self-supporting spiral conveyor belt 102 relies on the bottom edge of the C-shaped groove of the outer ring of the bottom free wheel 301 for support. The outer ring of the bottom free wheel 301 friction drives the inner side 109 of the self-supporting spiral mesh belt to support the bottom edge of the C-shaped groove of the outer ring of the bottom free wheel 301, thereby assisting the self-supporting spiral conveyor belt 102 to return to the feed port to complete the entire composite spiral mesh belt transmission.

Claims

1. A composite spiral mesh belt transmission device, characterized in that: The invention is composed of a self-supporting main transmission mechanism, an auxiliary conveying mesh belt mechanism and an auxiliary belt return mechanism; the self-supporting main transmission mechanism is supported on a support frame (101) by a central shaft (111) of a central drum (103) through a central bearing (107); the central shaft (111) connected to a power source drives the central drum (103) to rotate; the central drum (103) is a cylinder; a friction strip (106) is mounted on the outermost circle of the central drum (103); a first guide rail (108) is arranged at the bottom of the central drum (103) and supported on the support frame (101); the spiral diameter thereof is larger than the outermost diameter of the central drum (103); the self-supporting spiral conveying belt (102) is spirally wound on the bottom end of the first circle of the spiral conveying forward transmission based on the pitch of the self-supporting spiral conveying belt (102) and is used for supporting and guiding The self-supporting spiral conveyor belt (102) is guided by a second guide rail (112) which is arranged on a support frame (101) on the outer side (110) of the self-supporting spiral conveyor belt, and the spiral path of the self-supporting spiral conveyor belt (102) is spirally wound to support the outer side (110) of the self-supporting spiral conveyor belt, the inner side (109) of the self-supporting spiral mesh belt is connected to a plurality of inner horseshoes (114) via a through shaft (115), a plurality of support limit seats (113) are continuously or spacedly arranged on the plurality of inner horseshoes (114), the outer side (110) of the self-supporting spiral mesh belt is connected to an outer horseshoe (116) via a through shaft (115), and the friction strip (106) contacts the through shaft (115) on the inner side (109) of the self-supporting spiral mesh belt to perform friction driving; the auxiliary conveyor mesh belt machine The auxiliary transmission shaft (203) is arranged on the bearing seats (202) on both sides of the support frame (101) at the discharge end, the auxiliary transmission motor (201) drives the auxiliary transmission shaft (203) to rotate, the auxiliary transmission shaft (203) is provided with an outer gear (204) meshing with the outer horseshoe (116), and the auxiliary transmission shaft (203) is also provided with a mesh belt inner side supporting free roller (205) to form a self-supporting spiral mesh belt inner side (109) supporting roller; the auxiliary belt return mechanism is fixed on the support frame (101) by a free wheel positioning drum (304) arranged at the bottom of the center drum (103) and coincident with its axis, and the free wheel positioning drum (304) is embedded in the center drum (103). The inner ring of the bottom free wheel (301) is used for rotation center positioning. A plurality of supporting rollers (303) are arranged on the supporting frame (101) below the bottom free wheel (301) to support the bottom free wheel (301) to rotate. A free wheel driving mechanism (302) connected to power is arranged on the supporting frame (101). A pre-tightening device is radially arranged on the rollers on the free wheel driving mechanism (302) so that the outer rings of the rollers on the free wheel driving mechanism (302) are closely attached to the inner ring of the bottom free wheel (301). The bottom free wheel (301) and the center drum (103) are driven to rotate in opposite directions through friction. The outer ring of the bottom free wheel (301) frictionally drives the inner side (109) of the self-supporting spiral mesh belt to assist the self-supporting spiral conveyor belt (102) to return to the feed inlet.

2. According to claim 1, a composite spiral mesh belt transmission device is characterized in that The outer ring of the bottom free wheel (301) has a C-shaped groove cross section.

3. A composite spiral mesh belt transmission device according to claim 2, characterized in that The inner and outer diameters of the C-shaped groove of the outer ring of the bottom free wheel (301) are equal to the outer diameter of the outermost ring of the center drum (103), and the bottom free wheel (301) rotates in the opposite direction to the center drum (103) with the center drum (103) as the axis.

4. A composite spiral mesh belt transmission device according to claim 1 or 2, characterized in that The central drum (103) is surrounded by a drum peripheral plate (105) to form a cylinder, and the friction strip (106) is assembled on the drum peripheral plate (105) to form the outermost circle of the central drum (103).

5. The composite spiral mesh belt transmission device according to claim 3, characterized in that The central drum (103) is surrounded by a drum peripheral plate (105) to form a cylinder, and the friction strip (106) is assembled on the drum peripheral plate (105) to form the outermost circle of the central drum (103).

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