Energy-saving circulating oven for printing machine

Abstract

The utility model belongs to the technical field of printing, and provides an energy-saving circulating oven for a printing machine, which comprises an oven body, a bracket, a pipe assembly, a fan assembly and an air dividing baffle. Wherein an accommodating cavity is formed in the box body; the bracket and the box body are arranged at intervals; the pipe assembly comprises an air inlet pipe and an air outlet pipe which are communicated with the containing cavity, and further comprises a mixed heating pipe installed on the support and a circulating pipe used for communicating the air outlet pipe with the mixed heating pipe, and the mixed heating pipe forms an air inlet and is used for heating air from the air inlet. The fan assembly comprises a first fan and a second fan which are installed on the support in a spaced mode, the first fan is connected between the mixed heating pipe and the air inlet pipe, and the second fan is communicated with the air outlet pipe and forms an air outlet. The air dividing baffle is arranged in the air outlet pipe and used for dividing the interior of the air outlet pipe into two parts of air flow channels communicating with the circulating pipe and the air outlet.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of printing, and particularly relates to an energy-saving circulating oven for a printing machine. BACKGROUND

[0002] In a printing process, a printed matter needs to be subjected to drying treatment to ensure rapid drying and firm adhesion of printing ink. In a drying process, a conventional oven usually adopts a one-time hot air heating mode. This mode is not only high in energy consumption, but also relatively low in heat energy utilization rate. Specifically, after heating air, most heat energy is lost with the discharge of hot air and cannot be effectively recycled and reused. This not only causes waste of energy, but also increases the operating cost of an enterprise. Therefore, it is necessary to solve the above technical problems. CONTENT OF THE UTILITY MODEL

[0003] The purpose of the embodiment of the application is to provide an energy-saving circulating oven for a printing machine to solve the technical problem of low heat energy utilization efficiency of an oven in the prior art.

[0004] To achieve the above purpose, the technical scheme adopted by the application is to provide an energy-saving circulating oven for a printing machine, which comprises:

[0005] a box body, which forms an accommodating cavity inside;

[0006] a support, which is arranged at intervals from the box body;

[0007] a pipe assembly, which comprises an air inlet pipe and an air outlet pipe respectively connected to the accommodating cavity, further comprises a mixed heating pipe installed on the support and a circulating pipe for connecting the air outlet pipe and the mixed heating pipe, and the mixed heating pipe forms an air inlet and is used for heating air from the air inlet;

[0008] a fan assembly, which comprises a first fan and a second fan installed at intervals on the support, the first fan is connected between the mixed heating pipe and the air inlet pipe and is used for conveying air flow from the mixed heating pipe to the air inlet pipe, and the second fan is connected to the air outlet pipe and forms an air outlet for discharging air flow in the air outlet pipe to an external environment;

[0009] an air distribution baffle, which is arranged inside the air outlet pipe and is used for separating two air flow channels in the air outlet pipe, one of which is connected to the circulating pipe and the other of which is connected to the air outlet.

[0010] Optionally, the pipe assembly further comprises a valve plate arranged inside the circulating pipe and an operation handle arranged outside the circulating pipe and connected to the valve plate;

[0011] the operation handle is rotationally connected to the circulating pipe and is used for driving the valve plate to rotate relative to the circulating pipe to adjust the opening degree of the circulating pipe.

[0012] Optionally, the pipe assembly further comprises a temperature sensor and a driving mechanism connected in communication;

[0013] The temperature sensor is arranged inside the air inlet pipe and used for detecting air temperature, and the driving mechanism is in transmission connection with the operation handle and used for driving the operation handle.

[0014] Optionally, the operation handle is provided with an arc-shaped slot adapted to the rotation track of the operation handle, and the pipe assembly further comprises a locking bolt partially penetrating through the arc-shaped slot;

[0015] The locking bolt is threadedly connected to the circulating pipe and capable of limiting the rotation of the operation handle relative to the circulating pipe during the screwing relative to the circulating pipe.

[0016] Optionally, the top and bottom of the box body are respectively provided with a through slit in communication with the accommodating cavity, and the bottom of the box body is further provided with a supporting leg for supporting the box body.

[0017] The accommodating cavity is provided with a plurality of guide rollers arranged in sequence and at intervals along the height direction of the box body, and further provided with a plurality of air blowing nozzles corresponding to the guide rollers one by one in the horizontal direction, the air blowing nozzles being in communication with the air inlet pipe and opposite to the guide rollers.

[0018] Optionally, the energy-saving circulating oven for printing machine further comprises an air uniformizing box arranged in the accommodating cavity.

[0019] The air inlet pipe and all the air blowing nozzles are in communication with the air uniformizing box.

[0020] Optionally, a plurality of air uniformizing sheets are arranged at intervals in the air flow channel between the air uniformizing box and the air inlet pipe, and the air uniformizing sheets are uniformly distributed along the height direction of the air uniformizing box.

[0021] Optionally, two air uniformizing boxes are arranged in back-to-back and at intervals.

[0022] The through slits arranged at the top and bottom of the box body are respectively provided with three groups, the through slit in the middle is opposite to the interval between the air uniformizing boxes, and the through slits on the two sides are opposite to one side of the air blowing nozzles of the air uniformizing boxes.

[0023] The printing machine energy-saving circulating oven provided by the application has the beneficial effect that, compared with the prior art, in the printing machine energy-saving circulating oven provided by the application, the first fan can introduce the air heated by the mixed heating pipe into the containing cavity through the air inlet pipe and use it for drying, and the second fan can discharge the hot air in the containing cavity to the external environment through the air outlet pipe and the air outlet. Since the circulating pipe is communicated between the air outlet pipe and the mixed heating pipe, and the air distribution baffle for separating the flow channel is arranged inside the air outlet pipe, part of the hot air entering the air outlet pipe can return to the mixed heating pipe through the circulating pipe, so that the heat of the part of the hot air can be utilized twice, thereby the heat energy utilization efficiency of the printing machine energy-saving circulating oven in the application can be significantly improved, which is much better than the prior art. BRIEF DESCRIPTION OF DRAWINGS

[0024] In order to more clearly illustrate the technical solutions in the embodiments of the application, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the application, and other drawings can be obtained by those skilled in the art without creative labor under the premise of the drawings.

[0025] Figure 1 The overall structure of the printing machine energy-saving circulating oven in the embodiment of the application Figure 1

[0026] Figure 2 The overall structure of the printing machine energy-saving circulating oven in the embodiment of the application Figure 2

[0027] Figure 3 The partial structure of the printing machine energy-saving circulating oven in the embodiment of the application

[0028] Figure 4 The partial structure of the printing machine energy-saving circulating oven in the embodiment of the application

[0029] Figure 5 The cross-sectional structure along the A-A line in the embodiment of the application Figure 4

[0030] ​​​In the figure, each reference sign: 100, box; 101, containing cavity; 102, wear seam; 103, support leg; 104, guide roller; 105, blowing nozzle; 106, uniform wind box; 107, uniform wind piece; 200, support; 301, air inlet pipe; 302, air outlet pipe; 303, mixed heating pipe; 304, circulating pipe; 305, valve plate; 306, operating handle; 307, temperature sensor; 308, arc-shaped groove; 309, locking bolt; 331, air inlet; 401, first fan; 402, second fan; 421, air outlet; 500, air distribution baffle. DETAILED DESCRIPTION

[0031] In order to make the technical problems to be solved by the present application, the technical solutions and beneficial effects more clearly, the present application will be further described in detail below in conjunction with the drawings and examples. It should be understood that the specific examples described herein are only used to explain the present application, and are not used to limit the present application.

[0032] It should be noted that when an element is referred to as "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0033] It should be understood that the terms "length", "width", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and therefore cannot be understood as indicating or implying that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application.

[0034] In addition, the terms "first", "second", "third", etc. are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the technical features indicated. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0035] Please refer to Figures 1 to 5 , now a kind of energy-saving circulating oven for printing machine provided by the embodiment of the present application will be described. The energy-saving circulating oven for printing machine includes box 100, support 200, pipe assembly, fan assembly and air distribution baffle 500. Wherein:

[0036] The box 100 is internally formed with a containing cavity 101; the support 200 is arranged in spaced apart relation with the box 100; the pipe assembly comprises an air inlet pipe 301 and an air outlet pipe 302 which are respectively communicated with the containing cavity 101, further comprises a mixing and heating pipe 303 which is mounted on the support 200 and forms an air inlet 331 and is used for heating air from the air inlet 331, and a circulation pipe 304 which is used for communicating the air outlet pipe 302 with the mixing and heating pipe 303; the fan assembly comprises a first fan 401 and a second fan 402 which are mounted in spaced apart relation on the support 200, the first fan 401 is connected between the mixing and heating pipe 303 and the air inlet pipe 301 and is used for conveying air current from the mixing and heating pipe 303 to the air inlet pipe 301, the second fan 402 is communicated with the air outlet pipe 302 and forms an air outlet 421 which is used for discharging air current in the air outlet pipe 302 to the external environment; a distribution baffle 500 is arranged in the air outlet pipe 302 and is used for dividing the air outlet pipe 302 into two air flow passages which are respectively communicated with the circulation pipe 304 and the air outlet 421.

[0037] According to the above structure provided in the embodiment, in the energy-saving circulation oven for printing machine provided in the embodiment, the first fan 401 can convey air heated by the mixing and heating pipe 303 into the containing cavity 101 through the air inlet pipe and is used for drying, the second fan 402 can discharge hot air in the containing cavity 101 to the external environment through the air outlet pipe 302 and the air outlet 421. Since the circulation pipe 304 is communicated between the air outlet pipe 302 and the mixing and heating pipe 303, and the distribution baffle 500 is arranged in the air outlet pipe 302 and is used for dividing the air flow passage, therefore, part of the hot air entering the air outlet pipe 302 can return to the mixing and heating pipe 303 through the circulation pipe 304, so that the heat of the part of the hot air can be reused, thereby the heat energy utilization efficiency of the energy-saving circulation oven for printing machine provided in the embodiment can be improved significantly, which is much better than the prior art. It can be understood that an electric heater is usually mounted in the mixing and heating pipe and is used for heating air from the air inlet 331, and an air filter device is usually connected to the front end of the air inlet 331.

[0038] In another embodiment provided in the application, please refer to Figures 1 to 5 The pipe assembly further comprises a valve plate 305 which is arranged in the circulation pipe 304 and an operation handle 306 which is arranged outside the circulation pipe 304 and is connected to the valve plate 305; the operation handle 306 is rotationally connected to the circulation pipe 304 and is used for driving the valve plate 305 to rotate relative to the circulation pipe 304 so as to adjust the opening degree of the circulation pipe 304. According to the above structure provided in the embodiment, the operation personnel can control the opening degree of the circulation pipe 304 by adjusting the operation handle 306, so that the amount of the hot air returning to the mixing and heating pipe 303 through the circulation pipe 304 can be controlled, thereby the reused amount of the hot air can be adjusted conveniently, which is beneficial to further improve the heat energy utilization efficiency of the energy-saving circulation oven for printing machine provided in the embodiment.

[0039] In another embodiment provided by the present application, referring to Figures 1 to 5 , the pipe assembly further comprises a temperature sensor 307 and a driving mechanism (not shown in the drawings) connected in communication; the temperature sensor 307 is arranged inside the air inlet pipe 301 and used for detecting the air temperature, and the driving mechanism is drivingly connected with the operating handle 306 and used for driving the operating handle 306; it is to be noted that when the driving mechanism is used to operate the handle 306, the locking bolt 309 used for locking the adjusted operating handle 306 is in the loosened state, and at this time, the rotation of the valve plate 305 is controlled by the driving mechanism according to the signal of the temperature sensor 307. It can be understood that the driving mechanism in this embodiment can be selected as the commonly used servo motor structure in the art, which will not be described in more details here. According to the above structure provided in this embodiment, the temperature sensor 307 can automatically adjust the operating handle 306 and the power of the electric heater in the mixed heating pipe 303 by detecting the air temperature in the air inlet pipe 301 and driving the driving mechanism, so that the air entering the containing cavity 101 can maintain a more stable temperature and improve the energy saving effect, which is beneficial to further improve the heat energy utilization efficiency of the energy-saving circulating oven for the printing machine in this embodiment.

[0040] In another embodiment provided by the present application, referring to Figures 1 to 5 , the operating handle 306 is provided with an arc-shaped slot 308 adapted to the rotation track thereof, and the pipe assembly further comprises a locking bolt 309 partially penetrating through the arc-shaped slot 308; the locking bolt 309 is threadedly connected to the circulating pipe 304 and can limit the rotation of the operating handle 306 relative to the circulating pipe 304 during the screwing relative to the circulating pipe 304. According to the above structure provided in this embodiment, the locking bolt 309 penetrating through the arc-shaped slot 308 can be tightened or loosened relative to the operating handle 306 by screwing relative to the circulating pipe 304; when manual operation is adopted, the locking bolt 309 is loosened, the operating handle 306 is rotated to the set position, and then the locking bolt 309 is screwed, so that the operating handle 306 can be kept in the fixed position and the opening degree of the circulating pipe 304 can be kept stable, at this time, the signal of the temperature sensor 307 is only used to control the power of the electric heater in the mixed heating pipe 303, which is beneficial to further improve the heat energy utilization efficiency of the energy-saving circulating oven for the printing machine in this embodiment and improve the temperature control precision.

[0041] In another embodiment provided by the present application, referring to Figures 1 to 5The top and bottom of the box body 100 are respectively provided with a through feed slot 102 communicated with the accommodating cavity 101, and the bottom of the box body 100 is further provided with a supporting leg 103 for supporting the box body 100; a plurality of guide rollers 104 are arranged in the accommodating cavity 101 and are sequentially and spacedly arranged along the height direction of the box body 100, and a plurality of blowing nozzles 105 corresponding to the plurality of guide rollers 104 one by one in the horizontal direction are further arranged, and the blowing nozzles 105 are communicated with the air inlet pipe 301 and are opposite to the guide rollers 104. According to the above structure provided in the embodiment, the target printing material can sequentially pass through the plurality of guide rollers 104 in the process of passing through the through feed slots 102 at the top and bottom of the box body 100, and since the blowing nozzles 105 are arranged opposite to the guide rollers 104, the heat of the hot air blown out by the blowing nozzles 105 can be more fully utilized, which is beneficial to further improve the heat energy utilization efficiency of the energy-saving circulating oven for the printing machine in the embodiment. In addition, the guide rollers 104 can also effectively prevent the deformation of the printing material when the blowing nozzles 105 blow hot air on the printing material as a supporting structure of the printing material, which can significantly improve the drying quality of the energy-saving circulating oven for the printing machine in the embodiment.

[0042] In another embodiment provided in the present application, referring to Figures 1 to 5 , the energy-saving circulating oven for the printing machine further comprises a uniform air box 106 arranged in the accommodating cavity 101; the air inlet pipe 301 and all the blowing nozzles 105 are communicated with the uniform air box 106. According to the above structure provided in the embodiment, the uniform air box 106 communicated with all the blowing nozzles 105 can make the heat uniformly distributed at each blowing nozzle 105, which is beneficial to further improve the heat energy utilization efficiency of the energy-saving circulating oven for the printing machine in the embodiment.

[0043] In another embodiment provided in the present application, a plurality of uniform air pieces 107 are arranged in the air flow channel between the uniform air box 106 and the air inlet pipe 301, and the plurality of uniform air pieces 107 are uniformly distributed along the height direction of the uniform air box 106. According to the above structure provided in the embodiment, the plurality of uniform air pieces 107 uniformly distributed along the height direction of the uniform air box 106 can make the hot air from the air inlet pipe 301 uniformly distributed along the height direction of the uniform air box 106, and further make the hot air blown out by each blowing nozzle 105 uniform, which is beneficial to further improve the heat energy utilization efficiency of the energy-saving circulating oven for the printing machine in the embodiment. Here, referring to Figure 5 , it can be understood that since the uniform air box 106 has two, the air flow channel is also provided with two corresponding air flow channels, and each air flow channel is arranged on the side wall corresponding to the uniform air box 106, and the air inlet pipe 301 is communicated with the air flow channel to supply hot air to the corresponding uniform air box 106 through the bifurcated joint.

[0044] In another embodiment provided in the present application, referring to Figures 1 to 5, two uniform air boxes 106 are arranged back to back; three groups of through feed slits 102 are arranged on the top and bottom of the box body 100, and the through feed slit 102 in the middle is opposite to the interval between the uniform air boxes 106, and the through feed slits 102 on the two sides correspond to one side of the air blowing nozzles 105 of the uniform air boxes 106. According to the above structure provided in the embodiment, two uniform air boxes 106 are arranged in the box body 100, which can correspond to the arrangement of two groups of guide rollers 104 and two groups of air blowing nozzles, and the printing material can pass through the interval between the two uniform air boxes 106 again after passing through the two groups of guide rollers 104 in turn, so that the travel path of the printing material is more reasonable, the heat of the hot air can be more fully utilized, and the heat utilization efficiency of the energy-saving circulating oven for the printing machine in the embodiment is further improved.

[0045] The above only describes the preferred embodiments of the present application and is not intended to limit the present application. Any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. An energy-saving circulation oven for a printing press, characterized in that: include: A box body (100) having an internal accommodating cavity (101); A bracket (200) is spaced apart from the box (100); A pipe assembly comprising an air inlet pipe (301) and an air outlet pipe (302) respectively connected to the accommodating cavity (101), a mixing heating pipe (303) mounted on the bracket (200), and a circulation pipe (304) for connecting the air outlet pipe (302) and the mixing heating pipe (303), wherein the mixing heating pipe (303) forms an air inlet (331) and is used to heat air from the air inlet (331); A fan assembly, comprising a first fan (401) and a second fan (402) installed at intervals on the bracket (200), wherein the first fan (401) is connected between the mixing heating tube (303) and the air inlet tube (301) and is used to transport air from the mixing heating tube (303) to the air inlet tube (301), and the second fan (402) is connected to the air outlet tube (302) and forms an exhaust port (421) for discharging air in the air outlet tube (302) into the external environment; The air dividing baffle (500) is arranged inside the air outlet pipe (302) and is used to separate two air flow passages inside the air outlet pipe (302), one connected to the circulation pipe (304) and the other connected to the air outlet (421).

2. The energy-saving circulation oven for a printing press according to claim 1, characterized in that: The pipe assembly further includes a valve plate (305) disposed inside the circulation pipe (304) and an operating handle (306) disposed outside the circulation pipe (304) and connected to the valve plate (305); The operating handle (306) is rotatably connected to the circulation pipe (304) and is used to drive the valve plate (305) to rotate relative to the circulation pipe (304) to adjust the opening of the circulation pipe (304).

3. The energy-saving circulation oven for a printing press according to claim 2, characterized in that: The tube assembly also includes a temperature sensor (307) and a drive mechanism in communicative connection; The temperature sensor (307) is arranged inside the air inlet pipe (301) and is used to detect the air temperature. The driving mechanism is in transmission connection with the operating handle (306) and is used to drive the operating handle (306).

4. The energy-saving circulation oven for a printing press according to claim 2 or 3, characterized in that: The operating handle (306) is provided with an arc-shaped groove (308) adapted to its own rotation trajectory, and the pipe assembly further includes a locking bolt (309) partially passing through the arc-shaped groove (308); The locking bolt (309) is threadedly connected to the circulation pipe (304) and is capable of limiting the rotation of the operating handle (306) relative to the circulation pipe (304) during the process of being screwed relative to the circulation pipe (304).

5. The energy-saving circulation oven for a printing press according to claim 1, characterized in that: The top and bottom of the box body (100) are respectively provided with material threading slots (102) connected to the accommodating cavity (101), and the bottom of the box body (100) is also provided with supporting legs (103) for supporting the box body (100); The accommodating cavity (101) is provided with a plurality of guide rollers (104) arranged in sequence and spaced apart in the height direction of the box body (100), and is also provided with a plurality of blowing nozzles (105) corresponding one by one to the plurality of guide rollers (104) in the horizontal direction, wherein the blowing nozzles (105) are connected to the air inlet pipe (301) and are directly opposite to the guide rollers (104).

6. The energy-saving circulation oven for a printing press according to claim 5, characterized in that: The energy-saving circulation oven for a printing press further comprises an air distribution box (106) arranged in the accommodating cavity (101); The air inlet pipe (301) and all the blowing nozzles (105) are connected to the air uniforming box (106).

7. The energy-saving circulation oven for a printing press according to claim 6, characterized in that: A plurality of air leveling blades (107) are arranged at intervals in the air flow passage between the air leveling box (106) and the air inlet pipe (301), and the plurality of air leveling blades (107) are evenly distributed along the height direction of the air leveling box (106).

8. The energy-saving circulation oven for a printing press according to claim 6, characterized in that: Two air-distributing boxes (106) are arranged back to back with intervals; The material threading slits (102) arranged at the top and bottom of the box body (100) are respectively provided in three groups, the material threading slits (102) located in the middle group are directly opposite to the intervals between the air uniforming boxes (106), and the material threading slits (102) located on both sides correspond to one side of the blowing nozzle (105) of the air uniforming box (106).

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