Cast iron well lid casting mold capable of intelligently adjusting casting temperature and pressure

Abstract

The utility model discloses a cast iron well lid casting mold capable of intelligently adjusting casting temperature and pressure, and relates to the technical field of well lid casting molds. In order to solve the problems that in the casting process of an existing cast iron well lid casting mold, temperature and pressure control often depends on manual experience and field operation, accurate control is difficult to achieve, the product quality is unstable, and due to instability of manual control, frequent adjustment and monitoring are needed, the production efficiency is low, and the labor intensity of workers is large. The cast iron well lid casting mold comprises the mold body, the temperature adjusting mechanism and the pressure adjusting mechanism, the temperature and the pressure in the casting process are accurately controlled, casting defects are reduced, the qualified rate of products is increased, manual intervention is reduced through an automatic and intelligent adjusting mode, the casting period is shortened, and the production efficiency is improved; furthermore, accurate temperature and pressure control is beneficial for reducing energy waste and raw material consumption, and the production cost is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of manhole cover casting molds, in particular to a cast iron manhole cover casting mold with intelligent adjustment of casting temperature and pressure. Background Technique

[0002] Cast iron manhole covers are used to cover underground facilities such as sewer pipes and cable trenches. Regarding the existing cast iron manhole cover casting molds, a Chinese patent with the publication number CN118371665A discloses a casting mold for producing ductile iron manhole covers, which mainly consists of an upper mold assembly, a lower mold assembly, and a cooling assembly. Each component cooperates with each other to meet the casting requirements of ductile iron manhole covers with threads on the outer periphery and the requirements for rapid cooling and demolding; during casting, the upper module of the upper mold assembly and the lower module of the lower mold assembly are closed, and casting is carried out using the pouring channels reserved on the upper module. After casting, rapid cooling is carried out using the cooling assembly, and then the upper module of the upper mold assembly is separated from the lower module. The rotation demolding mechanism of the lower module is used to make the cast ductile iron manhole cover be pushed upward while rotating, and finally rapid demolding is completed.

[0003] However, during the casting process of the existing cast iron manhole cover casting molds, the control of temperature and pressure often depends on manual experience and on-site operations, making it difficult to achieve precise control, resulting in unstable product quality. Moreover, due to the instability of manual control, frequent adjustments and monitoring are required, leading to low production efficiency and high labor intensity for workers. Content of the Utility Model

[0004] The purpose of the utility model is to provide a cast iron manhole cover casting mold with intelligent adjustment of casting temperature and pressure, which can solve the problems in the prior art.

[0005] To achieve the above purpose, the utility model provides the following technical solutions:

[0006] A cast iron manhole cover casting mold with intelligent adjustment of casting temperature and pressure, including a mold body, a temperature adjustment mechanism, and a pressure adjustment mechanism. The mold body is provided with at least one mold cavity, and the shape of the mold cavity matches the designed shape of the cast iron manhole cover. The temperature adjustment mechanism includes a temperature display, a water-cooling pipeline, and a heater. The temperature adjustment mechanism also includes temperature sensors arranged at multiple key positions of the mold body for real-time monitoring of the temperature of the mold. The temperature display is electrically connected to the heater and the temperature sensors respectively, and the temperature display is fixedly installed on one side of the mold body. The water-cooling pipeline and the heater are evenly distributed in the mold body respectively. The pressure adjustment mechanism includes a pressure display, a vacuum pump, and a vacuum tube. The pressure display is fixedly installed on one side of the mold body, the pressure display is electrically connected to the vacuum pump, and the vacuum tube is connected to the mold cavity through the vacuum tube.

[0007] Preferably, the mold body includes an upper mold and a lower mold. The upper mold abuts against the lower mold. A positioning rod is provided on the surface of the upper mold, and a positioning sleeve adapted to the positioning rod is provided on the lower mold. The lower surface of the lower mold is fixedly connected to the mold base.

[0008] Preferably, a liquid inlet mechanism is provided at the lower end of the lower mold. One side of the liquid inlet mechanism is connected to the liquid injection port through a pipeline, and the liquid injection port is fixed on one side of the mold base.

[0009] Preferably, the pressure regulating mechanism further includes a pressure sensor. The pressure sensor is in direct contact with the fluid medium inside the mold cavity. The pressure sensor is installed on the upper surface of the upper mold pressing plate and is electrically connected to the pressure display.

[0010] Preferably, the liquid inlet mechanism includes a liquid inlet pump and a liquid inlet pipeline. The upper end of the liquid inlet pump is connected to the equalizing tank. The liquid inlet pipelines are symmetrically arranged on both sides of the equalizing tank, and the liquid inlet pipelines are connected to the mold cavity.

[0011] Preferably, a flow valve is installed on one side of the water cooling pipeline. The flow valve is electrically connected to the temperature display and is used to adjust the flow rate of the cooling medium.

[0012] Preferably, the temperature regulating mechanism and the pressure regulating mechanism constitute an intelligent regulating module. The intelligent regulating module belongs to a hardware structure and includes:

[0013] A central control unit, which is used to receive the signals of the temperature sensor and the pressure sensor and automatically adjust the flow rate of the water cooling pipeline, the power of the heater, and the working state of the vacuum pump according to the preset parameters;

[0014] A display and operation unit. Displays are provided on the surfaces of the temperature display and the pressure display, which are used to display the real-time collected temperature and pressure data according to the signals of the temperature sensor and the pressure sensor and allow the operator to input adjustment instructions;

[0015] A data storage unit, which is used to store historical temperature and pressure data.

[0016] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0017] By precisely controlling the temperature and pressure during the casting process, the occurrence of casting defects is reduced, the qualified rate of products is improved. The automated and intelligent adjustment method reduces manual intervention, shortens the casting cycle, and improves production efficiency. Further, the precise temperature and pressure control helps to reduce energy waste and raw material consumption, and reduces production costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a front view sectional view schematic diagram of the cast iron manhole cover casting mold for intelligent adjustment of casting temperature and pressure of the present utility model;

[0019] Figure 2 is a schematic exploded sectional view of the mold body of the present utility model;

[0020] Figure 3 is a schematic partial sectional view of the mold body of the present utility model;

[0021] Figure 4 is a schematic diagram of the intelligent adjustment module of the present utility model.

[0022] In the figure: 1. Mold body; 11. Upper mold; 12. Lower mold; 13. Mold base; 14. Liquid inlet mechanism; 141. Liquid inlet pump; 142. Liquid inlet pipeline; 143. Equalizing tank; 15. Liquid injection port; 16. Upper mold pressing plate; 2. Temperature adjustment mechanism; 21. Temperature display; 22. Water cooling pipeline; 23. Heater; 3. Pressure adjustment mechanism; 31. Pressure display; 32. Vacuum pump; 33. Vacuum pipeline; 34. Pressure sensor. Detailed implementation manners

[0023] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0024] The present utility model will be further described below in conjunction with specific embodiments:

[0025] Embodiment 1

[0026] As Figure 1 - Figure 2 shown, the cast iron manhole cover casting mold with intelligent adjustment of casting temperature and pressure in this embodiment includes a mold body 1, a temperature adjustment mechanism 2 and a pressure adjustment mechanism 3. The mold body 1 is provided with at least one mold cavity, and the shape of the mold cavity matches the designed shape of the cast iron manhole cover. The mold body 1 includes an upper mold 11 and a lower mold 12. The upper mold 11 abuts against the lower mold 12. A positioning rod is arranged on the surface of the upper mold 11, and a positioning sleeve adapted to the positioning rod is arranged on the lower mold 12. When the upper mold 11 abuts against the lower mold 12, the positioning rod is nested with the positioning sleeve for positioning to ensure accurate alignment of the mold during the casting process. The lower surface of the lower mold 12 is fixedly connected to the mold base 13. A liquid inlet mechanism 14 is arranged at the lower end of the lower mold 12. One side of the liquid inlet mechanism 14 is connected to the liquid injection port 15 through a pipeline. The liquid injection port 15 is fixed on one side of the mold base 13. The molten iron is injected into the liquid inlet mechanism 14 through the liquid injection port 15, and the iron water cools and solidifies in the mold cavity to form a cast iron manhole cover. During the casting process, the temperature adjustment mechanism 2 and the pressure adjustment mechanism 3 ensure the quality of the casting.

[0027] Specifically, the liquid inlet mechanism 14 includes a liquid inlet pump 141 and a liquid inlet pipeline 142. The upper end of the liquid inlet pump 141 is connected to the equalizing tank 143. The liquid inlet pipelines 142 are symmetrically arranged on both sides of the equalizing tank 143, ensuring the uniform distribution of the casting liquid in the mold cavity. The liquid inlet pipelines 142 are connected to the mold cavity. The casting liquid is pressurized into the equalizing tank 143 by the liquid inlet pump 141, ensuring that the liquid inlet heights of the two liquid inlet pipelines 142 are the same and uniformly transported into the mold cavity. Through the coordinated operation of the liquid inlet pump 141 and the vacuum pump 32, and in cooperation with the vacuum pump 32 to adjust the pressure in the mold cavity, the pressure in the mold cavity can be accurately controlled, improving the quality of manhole cover casting.

[0028] Embodiment 2

[0029] In the casting process of traditional cast iron manhole cover molds, the control of temperature and pressure often relies on manual experience and on-site operation, making it difficult to achieve precise control and resulting in unstable product quality.

[0030] In response to the above problems, referring to Figure 2 - Figure 3 As shown, on the basis of the above embodiment, the temperature adjustment mechanism 2 includes a temperature display 21, a water-cooling pipeline 22, and a heater 23. The temperature adjustment mechanism 2 also includes temperature sensors arranged at multiple key positions of the mold body 1 for real-time monitoring of the mold temperature. The temperature display 21 is electrically connected to the heater 23 and the temperature sensors respectively. The temperature display 21 is fixedly installed on one side of the mold body 1. The water-cooling pipeline 22 and the heater 23 are evenly distributed in the mold body 1 respectively. A flow valve is installed on one side of the water-cooling pipeline 22, and the flow valve is electrically connected to the temperature display 21 for adjusting the flow rate of the cooling medium to control the cooling speed of the mold.

[0031] The pressure adjustment mechanism 3 includes a pressure display 31, a vacuum pump 32, and a vacuum pipeline 33. The pressure display 31 is fixedly installed on one side of the mold body 1. The pressure display 31 is electrically connected to the vacuum pump 32. The vacuum pipeline 33 is connected to the mold cavity through the vacuum pipeline 33. The pressure adjustment mechanism 3 also includes a pressure sensor 34. The pressure sensor 34 is in direct contact with the fluid medium inside the mold cavity to accurately measure the pressure. The pressure sensor 34 is installed on the upper surface of the upper mold pressing plate 16 and is electrically connected to the pressure display 31.

[0032] Specifically in this embodiment, before the casting starts, a temperature curve is preset according to the material and specifications of the cast iron manhole cover. During the casting process, the temperature sensor monitors the temperature inside the mold in real time and compares it with the preset curve. If the measured temperature deviates from the preset curve, the temperature display 21 adjusts the power of the heater 23 or the flow rate of the water cooling pipe 22 to quickly return the temperature to the preset value. According to the requirements of the casting process, an initial pressure and a pressure change range are preset. When pouring the molten iron, according to the feedback signal of the pressure sensor 34, the pressure display 31 adjusts the vacuum pumping power of the vacuum pump 32 to ensure that the molten iron is evenly distributed in the mold cavity and fully solidifies. During the solidification process, the pressure is adjusted as needed to prevent defects in the cast iron manhole cover.

[0033] Embodiment 3

[0034] To better realize the automatic control of the temperature and pressure of the mold body 1, please refer to Figure 4 , the temperature adjustment mechanism 2 and the pressure adjustment mechanism 3 constitute a hardware intelligent adjustment module. The intelligent adjustment module includes:

[0035] A central control unit, which is used to receive the signals of the temperature sensor and the pressure sensor 34, and automatically adjusts the flow rate of the water cooling pipe 22, the power of the heater 23, and the working state of the vacuum pump 32 according to the preset parameters, realizing the centralized control of the temperature and pressure of the mold body 1, simplifying the system structure, and improving the control efficiency; a display and operation unit, where the temperature display 21 and the pressure display 31 are provided with display screens on their surfaces, which are used to display the real-time collected temperature and pressure data according to the signals of the temperature sensor and the pressure sensor 34, and allow the operator to input adjustment instructions; a data storage unit, which is used to store the historical temperature and pressure data for the convenience of analyzing and optimizing the casting process.

[0036] It should be noted that in this article, relational terms such as first and second are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the term "comprises", "comprising" or any other variation thereof is intended to cover a non-exclusive inclusion, such that a process, method, article or device comprising a series of elements includes not only those elements, but also other elements not expressly listed, or elements inherent to such process, method, article or device.

[0037] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A casting mold for cast iron manhole covers with intelligent adjustment of casting temperature and pressure, comprising a mold body (1), a temperature adjustment mechanism (2) and a pressure adjustment mechanism (3), characterized in that, The temperature adjustment mechanism (2) includes a temperature display (21), a water-cooling pipe (22), and a heater (23). The water-cooling pipe (22) and the heater (23) are evenly distributed in the mold body (1) respectively. The pressure adjustment mechanism (3) includes a pressure display (31), a vacuum pump (32), and a vacuum pipe (33). The pressure display (31) is fixedly installed on one side of the mold body (1), and the pressure display (31) is electrically connected to the vacuum pump (32).

2. The casting mold for cast iron manhole covers with intelligent adjustment of casting temperature and pressure according to claim 1, characterized in that, The mold body (1) includes an upper mold (11) and a lower mold (12). The upper mold (11) abuts against the lower mold (12), and the lower surface of the lower mold (12) is fixedly connected to the mold base (13).

3. The cast iron manhole cover casting mold with intelligent adjustment of casting temperature and pressure according to claim 2, characterized in that, An inlet liquid mechanism (14) is provided at the lower end of the lower mold (12), and one side of the inlet liquid mechanism (14) is connected to the liquid injection port (15) through a pipe.

4. The cast iron manhole cover casting mold with intelligent adjustment of casting temperature and pressure according to claim 2, characterized in that, An upper mold pressing plate (16) is installed in the upper mold (11), and pressure sensors (34) are symmetrically arranged on the upper surface of the upper mold pressing plate (16).

5. The cast iron manhole cover casting mold with intelligent adjustment of casting temperature and pressure according to claim 3, characterized in that, The inlet liquid mechanism (14) includes an inlet liquid pump (141) and an inlet liquid pipe (142). The upper end of the inlet liquid pump (141) is connected to an equalizing tank (143), and the inlet liquid pipes (142) are symmetrically arranged on both sides of the equalizing tank (143).

6. The cast iron manhole cover casting mold with intelligent adjustment of casting temperature and pressure according to claim 1, characterized in that, A flow valve is installed on one side of the water-cooling pipe (22), and the flow valve is electrically connected to the temperature display (21).

7. The casting mold for cast iron manhole covers with intelligent adjustment of casting temperature and pressure according to claim 1, characterized in that The temperature adjustment mechanism (2) and the pressure adjustment mechanism (3) constitute an intelligent adjustment module.

Images