Raw material heating structure for bottle blowing machine
By installing a thermal insulation cover on the outer jacket of the heating cylinder of the bottle blower and filling the circulation liquid, and adding thermal fins to the outer wall of the feed cylinder, the problem of heat cannot be recovered and utilized in the prior art is solved, and effective heat recovery and temperature control are achieved , reducing energy consumption and production costs.
Patent Information
- Application Number
- CN202420134865.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-01-19
- Publication Date
- 2024-12-10
- Estimated Expiration
- 2034-01-19
AI Technical Summary
The existing bottle blower heating structure cannot effectively recover heat, resulting in waste of energy resources and high production costs.
A raw material heating structure of the bottle blower including a protective cover, a motor, a feed barrel, an extrusion die and a screw is designed. By installing a thermal insulation cover on the outer jacket of the heating barrel and filling the circulation liquid, it absorbs heat and introduces it into the heat storage tank. The raw materials are preheated to achieve heat recovery and utilization, and thermal conductivity fins are added to the outer wall of the feed barrel to increase the heat dissipation area and control the temperature.
It effectively reduces the time for raw materials to melt in the conveying barrel, saves energy resources, avoids local overheating and heat loss, and improves the quality and production efficiency of finished products.
Smart Images
Figure CN222135896U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of blow molding, in particular to a raw material heating structure for a bottle blowing machine. Background Art
[0002] The bottle blowing machine is a device used to produce plastic bottles. Its heating mechanism is mainly used to heat the thermoplastic raw materials, melt them under high temperature and high pressure, and make them into a blowable state.
[0003] The general heating mechanisms of bottle blowing machines include electric heating, hot oil heating and steam heating. Hot oil heating needs to be heated in a special heating system and then transported to the heating area through a conveying pipeline. During the transmission of hot oil, the heat loss is large. Steam heating also needs to be generated by a special steam generator or boiler and transported through pipelines. It requires many equipment parts, high maintenance costs in the later stage, and large heat loss.
[0004] With electric heating, the heating element can be placed directly in the heating area of the bottle blowing machine, with low heat loss. However, in addition to heating the screw barrel, some heat is dissipated to the outside. Even if an insulation layer is laid outside the heating area, it is impossible to isolate all the heat dissipated to the outside, and the heat cannot be effectively recycled, resulting in a waste of energy resources and high production costs for the company. Utility Model Content
[0005] The technical problems of the utility model are:
[0006] In order to overcome the shortcomings of the existing heating structure that the heat cannot be effectively recycled and utilized, resulting in waste of energy resources and high production costs for enterprises, the utility model provides a raw material heating structure for a bottle blowing machine.
[0007] The technical implementation scheme adopted by this utility model is:
[0008] A raw material heating structure for a bottle blowing machine includes a protective cover, a motor, a feed barrel, an extrusion die head and a screw; a motor is installed in the protective cover; a feed barrel is provided on the right side of the protective cover; the right side of the feed barrel is connected to the extrusion die head; a screw is rotatably connected in the feed barrel; the left side of the screw is fixedly connected to the motor output shaft; it also includes a feed hopper, a heat preservation cover and a heating component; the left side of the feed barrel is connected to the feed hopper; a plurality of heat preservation covers are connected to the outer ring surface of the feed barrel; a heating component is commonly connected inside all the heat preservation covers; the heating component is connected to the feed hopper; a heat storage tank is provided on the side wall of the feed hopper; the heating component is used to collect the heat dissipated by the heat preservation cover and introduce it into the heat storage tank to preheat the raw materials in the feed hopper.
[0009] As a preferred technical solution of the utility model, the heating assembly includes a heating tube, a spacer, a conduit I and a conduit II; a heating tube is fixedly connected in each heat-insulating cover, and a heat-insulating layer is provided on the outside of the heating tube; an annular gap is left between each heating tube and the corresponding heat-insulating cover; a spacer is fixedly connected in the annular gap between each heating tube and the heat-insulating cover; a conduit I is connected to the upper part of the adjacent heat-insulating covers; another conduit I is connected to the upper part of the leftmost heat-insulating cover; the left end of conduit I on the leftmost heat-insulating cover is connected to the heat storage tank; the upper right part of the heat storage tank is connected to conduit II; the right part of conduit II is connected to the rightmost heating tube; and a pump is installed on conduit II.
[0010] As a preferred technical solution of the utility model, each heating cylinder is coaxial with the corresponding heat-insulating cover.
[0011] As a preferred technical solution of the utility model, the spacer is spiral-shaped.
[0012] As a preferred technical solution of the utility model, it also includes heat-conducting fins; a plurality of annular heat-conducting fins are fixedly connected to the outer ring surface of the conveying barrel; and each heat-insulating cover is used to cover the corresponding heat-conducting fins.
[0013] As a preferred technical solution of the utility model, it also includes a corrugated tube and an electric heater; each heating tube is fixedly connected with a corrugated tube; each corrugated tube is composed of a heat conduction cavity and a heating groove arranged alternately; each heat conduction fin is located in a heat conduction cavity; each heating groove is provided with an electric heater; each heat conduction cavity is also connected with two connecting pipes for air circulation, and each connecting pipe passes through the corrugated tube, the heating tube and the heat preservation cover in sequence.
[0014] As a preferred technical solution of the utility model, the electric heater is not in direct contact with the feeding barrel.
[0015] As a preferred technical solution of the utility model, the left and right sides of the heat-conducting fins are set as inclined surfaces, and the vertical section thereof is wedge-shaped.
[0016] Beneficial effects: 1. The utility model arranges a heat preservation cover outside the heating cylinder, and pours circulating liquid into the gap between the heat preservation cover and the heating cylinder. The circulating liquid fully absorbs the heat dissipated from the heating cylinder, and then the circulating liquid after absorbing heat is pumped into the heat storage tank to heat the feed hopper, and the feed hopper then preheats the granular raw materials therein, effectively reducing the melting time of the granular raw materials in the feed cylinder, realizing the recovery and utilization of waste heat, and saving energy resources.
[0017] By adding multiple heat-conducting fins to the outer wall of the conveying barrel, the heat dissipation area of the conveying barrel in the heating barrel is increased, so that when the temperature of the conveying barrel is abnormal, the heat-conducting fins can be used to quickly cool the conveying barrel, and the temperature of the conveying barrel can be effectively controlled;
[0018] 3. The heat-conducting fins and the electric heater are separated by the heat-conducting cavity and the heating groove. When the feeding barrel 3 is heated, the air in the heat-conducting cavity conducts heat to the heat-conducting fins evenly, so that the heat-conducting fins are evenly heated, and then the heat of the electric heater is evenly transferred to the feeding barrel. The even heating of the feeding barrel effectively avoids the local overheating of the feeding barrel. When the feeding barrel 3 is cooled, the heat-conducting cavity 20101 can be cooled separately through the connecting pipe of the heat-conducting cavity 20101, and then the heat-conducting fins 202 in the heat-conducting cavity 20101 assist the feeding barrel 3 to cool down quickly. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a three-dimensional structural schematic diagram of the raw material heating structure for the bottle blowing machine of the utility model;
[0020] Figure 2 It is a cross-sectional view of the raw material heating structure for the bottle blowing machine of the utility model;
[0021] Figure 3 This is a schematic diagram of the internal structure of the thermal insulation cover of the utility model;
[0022] Figure 4 This is a schematic diagram of the internal structure of the heating tube of the utility model.
[0023] Markings in the figure are: 1-protective cover, 2-motor, 3-feeding barrel, 4-feeding hopper, 5-insulation cover, 6-extrusion die, 7-screw, 101-heating barrel, 102-spacer, 103-conduit I, 104-conduit II, 4001-heat storage tank, 201-corrugated tube, 202-heat conducting fins, 203-electric heater, 20101-heat conducting cavity, 20102-heating tank. DETAILED DESCRIPTION
[0024] The present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods, but the protection scope and application scope of the present invention are not limited.
[0025] Embodiment 1
[0026] A raw material heating structure for a bottle blowing machine, according to Figure 1-4 As shown, it includes a protective cover 1, a motor 2, a feed barrel 3, an extrusion die head 6 and a screw 7; the motor 2 is installed in the protective cover 1; the right part of the protective cover 1 is provided with a feed barrel 3; the right part of the feed barrel 3 is connected to the extrusion die head 6; the feed barrel 3 is rotatably connected with the screw 7; the left part of the screw 7 is fixedly connected to the output shaft of the motor 2;
[0027] It also includes a feed hopper 4, a heat preservation cover 5 and a heating component; the left part of the conveying barrel 3 is connected to the feed hopper 4; a plurality of heat preservation covers 5 are connected to the outer ring surface of the conveying barrel 3; all the heat preservation covers 5 are commonly connected to a heating component; the heating component is connected to the feed hopper 4; a heat storage tank 4001 is opened on the side wall of the feed hopper 4; the heating component is used to collect the heat dissipated by the heat preservation cover 5 and introduce it into the heat storage tank 4001 to preheat the raw materials in the feed hopper 4.
[0028] according to Figure 1-3 As shown, the heating assembly includes a heating cylinder 101, a spacer bar 102, a conduit I 103 and a conduit II 104; a heating cylinder 101 is fixedly connected in each heat-insulating cover 5, and a heat-insulating layer is provided on the outside of the heating cylinder 101; an annular gap is left between each heating cylinder 101 and the corresponding heat-insulating cover 5; a spacer bar 102 is fixedly connected in the annular gap between each heating cylinder 101 and the heat-insulating cover 5; a conduit I 103 is connected to the upper part of the adjacent heat-insulating cover 5; another conduit I 103 is connected to the upper part of the leftmost heat-insulating cover 5; the left end of the conduit I 103 on the leftmost heat-insulating cover 5 is connected to the heat storage tank 4001; the upper right part of the heat storage tank 4001 is connected to the conduit II 104; the right part of the conduit II 104 is connected to the rightmost heating cylinder 101; and a pump is installed on the conduit II 104.
[0029] Each heating cylinder 101 is coaxial with the corresponding heat-insulating cover 5 .
[0030] The spacer bar 102 is spiral-shaped and is used to increase the residence time of the circulating liquid in the annular gap between the heating cylinder 101 and the heat-insulating cover 5 .
[0031] The specific working method is:
[0032] Connect the motor 2 and the pump on the conduit II 104 to the power supply;
[0033] Open the upper part of the heat storage tank 4001, pour the circulating liquid into the heat storage tank 4001, and start the pump on the conduit II 104 until the heat storage tank 4001 and the annular gaps between each heating cylinder 101 and the corresponding heat preservation cover 5 are filled with the circulating liquid;
[0034] A conventional heating element is provided in the heating cylinder 101;
[0035] First, the motor 2 is started and the output shaft of the motor 2 rotates, which drives the screw 7 to rotate synchronously. Then, the granular raw material is poured into the feed hopper 4. The granular raw material is transferred to the right as the screw 7 rotates. The gap between the screw 7 and the feed barrel 3 gradually decreases from left to right. Therefore, the granular raw material will be squeezed together during the transmission to the right. In addition, all areas of the entire screw 7 are provided with heating components, so that the granular raw material will melt during the movement, and then the parison is extruded from the extrusion die 6 at the right end.
[0036] The heating of the feed barrel 3 is generally completed by the heating barrel 101. The heating barrel 101 is annularly sleeved on the outside of the feed barrel 3. In addition to heating the internal feed barrel 3, the heating barrel 101 also radiates energy outward. Even if a heat-insulating material is applied to the outside of the heating barrel 101, absolute heat insulation cannot be achieved. At this time, a heat-insulating cover 5 is arranged outside the heating barrel 101, and circulating liquid is poured into the gap between the heat-insulating cover 5 and the heating barrel 101 to absorb the heat dissipated outward by the heating barrel 101. At this time, it is only necessary to control the pump on the conduit II 104 to make the circulating liquid flow at a slow flow rate so that the circulating liquid can fully absorb the heat dissipated outward by the heating barrel 101, and then the circulating liquid after absorbing heat is pumped into the heat storage tank 4001, and the circulating liquid enters from the lower part of the heat storage tank 4001, and the circulating liquid on the upper part of the heat storage tank 4001 is pushed out to the conduit II 104, and the conduit II 104 then pumps the circulating liquid back into the rightmost In the gap between the heat-insulating cover 5 and the heating cylinder 101, the circulating liquid flows leftward in the gap between the heat-insulating cover 5 and the heating cylinder 101. Under the guidance of the partition bar 102, the circulating liquid spirally flows in the gap between the heat-insulating cover 5 and the heating cylinder 101, thereby increasing the residence time of the circulating liquid in the gap between the heat-insulating cover 5 and the heating cylinder 101, and fully absorbing the heat radiated outward from the heating cylinder 101. Then, through the conduit I 103 between the adjacent heat-insulating covers 5, the circulating liquid flows from the gap between the heat-insulating cover 5 and the heating cylinder 101 on the far right to the gap between the heat-insulating cover 5 and the heating cylinder 101 on the left in turn. Then, the circulating liquid that has absorbed the heat returns to the heat storage tank 4001. The circulating liquid in the heat storage tank 4001 that has absorbed the heat heats the feed hopper 4, and the feed hopper 4 preheats the granular raw material therein, effectively reducing the melting time of the granular raw material in the feed cylinder 3, realizing the recovery and utilization of waste heat, and saving energy resources.
[0037] Second embodiment
[0038] On the basis of the first embodiment, according to Figure 4 As shown, heat-conducting fins 202 are also included; a plurality of annular heat-conducting fins 202 are fixedly connected to the outer ring surface of the conveying barrel 3; and each heat-insulating cover 5 is used to cover the corresponding heat-conducting fin 202.
[0039] according to Figure 3-4 As shown, it also includes a corrugated tube 201 and an electric heater 203; each heating tube 101 is fixedly connected with a corrugated tube 201; each corrugated tube 201 is composed of a heat conduction cavity 20101 and a heating groove 20102 arranged alternately; each heat conduction fin 202 is located in a heat conduction cavity 20101; each heating groove 20102 is provided with an electric heater 203; each heat conduction cavity 20101 is also connected with two connecting pipes for air circulation, and each connecting pipe passes through the corrugated tube 201, the heating tube 101 and the heat preservation cover 5 in sequence.
[0040] The electric heater 203 is not in direct contact with the feeding cylinder 3 .
[0041] The left and right sides of the heat conducting fin 202 are configured as inclined surfaces, and the vertical section thereof is wedge-shaped.
[0042] The connecting pipe on the heat conduction cavity 20101 is provided with a sealing plug.
[0043] On the basis of the above embodiment, a plurality of heat-conducting fins 202 are added to the outer wall of the feeding barrel 3 to increase the heat dissipation area of the feeding barrel 3 in the heating barrel 101, and the feeding barrel 3 is heated by a plurality of electric heaters 203. If the temperature of the feeding barrel 3 is too high, the temperature of the feeding barrel 3 is generally controlled by lowering the electric heater 203. The electric heater 203 has a good effect on heating the feeding barrel 3, but the electric heater 203 cannot quickly cool the feeding barrel 3, which may cause the raw materials in the feeding barrel 3 to Thermal decomposition or deterioration occurs, which reduces the quality and performance of the finished product produced by the bottle blowing machine. At this time, the sealing plug of the connecting pipe is opened, and the cooling gas is pumped into the heat transfer cavity 20101 through the external pump, and output from another connecting pipe to circulate the cooling gas, so as to quickly cool the feed barrel 3 through the heat transfer fins 202, thereby achieving effective control of the temperature of the feed barrel 3. After the temperature control of the feed barrel 3 is completed, the external pump is controlled to stop, and the cooling gas no longer enters the heat transfer cavity 20101;
[0044] The shape of the heat-conducting fin 202 can also be changed to increase the heating area of the heat-conducting fin 202. Figure 4 The circular ring shown has its left and right sides cut into bevels, so that the vertical section of the heat-conducting fin 202 is wedge-shaped, thereby increasing the heat dissipation area of the heat-conducting fin 202 in the heating cylinder 101, increasing the contact area between the heat-conducting fin 202 and the feed cylinder 3, and reducing the contact area between the feed cylinder 3 and the air in the heating cylinder 101, effectively improving the heat conduction efficiency of the heat-conducting fin 202, and having a higher cooling efficiency for the feed cylinder 3 and a better effect.
[0045] The above is only a specific implementation of the utility model, but the protection scope of the utility model is not limited thereto. Any technician familiar with the technical field can easily think of changes or substitutions within the technical scope disclosed by the utility model, which should be included in the protection scope of the utility model. Therefore, the protection scope of the utility model should be based on the protection scope of the claims.
Claims
1. A raw material heating structure for a bottle blowing machine, comprising a protective cover (1), a motor (2), a feed cylinder (3), an extrusion die head (6) and a screw (7); the motor (2) is installed in the protective cover (1); the right part of the protective cover (1) is provided with a feed cylinder (3); the right part of the feed cylinder (3) is connected to the extrusion die head (6); the feed cylinder (3) is rotatably connected with the screw (7); the left part of the screw (7) is fixedly connected to the output shaft of the motor (2); characterized in that: The material conveyor also comprises a feed hopper (4), a heat preservation cover (5) and a heating component; the left part of the conveying barrel (3) is connected to the feed hopper (4); the outer ring surface of the conveying barrel (3) is connected to a plurality of heat preservation covers (5); all the heat preservation covers (5) are connected to a heating component; the heating component is connected to the feed hopper (4); a heat storage groove (4001) is formed on the side wall of the feed hopper (4); the heating component is used to collect the heat dissipated by the heat preservation cover (5) and introduce it into the heat storage groove (4001) to preheat the raw materials in the feed hopper (4).
2. A raw material heating structure for a bottle blowing machine according to claim 1, characterized in that: The heating assembly comprises a heating cylinder (101), a spacer bar (102), a conduit I (103) and a conduit II (104); each heat-insulating cover (5) is fixedly connected to a heating cylinder (101), and a heat-insulating layer is provided on the outside of the heating cylinder (101); an annular gap is left between each heating cylinder (101) and the corresponding heat-insulating cover (5); each spacer bar (102) is fixedly connected to the annular gap between each heating cylinder (101) and the heat-insulating cover (5); The upper part of the adjacent heat preservation cover (5) is connected to a conduit I (103); the upper part of the leftmost heat preservation cover (5) is connected to another conduit I (103); the left end of the conduit I (103) on the leftmost heat preservation cover (5) is connected to the heat storage tank (4001); the upper right part of the heat storage tank (4001) is connected to a conduit II (104); the right part of the conduit II (104) is connected to the rightmost heating cylinder (101); and a pump is installed on the conduit II (104).
3. A raw material heating structure for a bottle blowing machine according to claim 2, characterized in that: Each heating cylinder (101) is coaxial with the corresponding heat-insulating cover (5).
4. A raw material heating structure for a bottle blowing machine according to claim 2, characterized in that: The spacer (102) is spiral-shaped.
5. The raw material heating structure for a bottle blowing machine according to claim 2, characterized in that: It also includes heat-conducting fins (202); a plurality of annular heat-conducting fins (202) are fixedly connected to the outer annular surface of the conveying barrel (3); and each heat-insulating cover (5) is used to cover the corresponding heat-conducting fin (202).
6. A raw material heating structure for a bottle blowing machine according to any one of claims 2 to 5, characterized in that: It also comprises a corrugated tube (201) and an electric heater (203); each heating tube (101) is fixedly connected to a corrugated tube (201); each corrugated tube (201) is composed of a heat conduction cavity (20101) and a heating groove (20102) arranged alternately; each heat conduction fin (202) is located in a heat conduction cavity (20101); each heating groove (20102) is provided with an electric heater (203); each heat conduction cavity (20101) is also connected to two connecting tubes for air circulation, and each connecting tube passes through the corrugated tube (201), the heating tube (101) and the heat insulation cover (5) in sequence.
7. A raw material heating structure for a bottle blowing machine according to claim 6, characterized in that: The electric heater (203) is not in direct contact with the feeding cylinder (3).
8. The raw material heating structure for a bottle blowing machine according to claim 5, characterized in that: The left and right sides of the heat-conducting fin (202) are arranged as inclined surfaces, and the vertical section thereof is wedge-shaped.