Pressure adjusting equipment and mold temperature controller

Abstract

The utility model discloses pressure regulating equipment and a mold temperature controller, and relates to the field of injection molding equipment, the pressure regulating equipment comprises a liquid level tank, the inside of the liquid level tank is provided with a cavity and an output port, and the output port is communicated with the cavity; the pressure stabilizing device is arranged at the top of the liquid level tank, a gas collecting space is formed in the pressure stabilizing device, a gas inlet communicated with the gas collecting space is formed in the pressure stabilizing device, and the gas inlet is connected with the output port; gas flows between the gas collection space and the liquid level tank along with the change of the internal liquid level of the liquid level tank so as to adjust the gas pressure of the cavity. According to the technical scheme provided by the utility model, the pressure stabilizing device is adopted to compress and expand the gas in the equipment, so that the pressure balance of the system is kept to improve the stability of the equipment.

Description

Technical Field

[0001] This utility model relates to the field of injection molding equipment, and in particular to a pressure regulating device and a mold temperature controller. Background Technology

[0002] A mold temperature controller is a device used to control the temperature of a mold; it can both heat up and cool down. The working principle of a mold temperature controller is to use a heat transfer medium with high thermal conductivity (such as water or heat transfer oil) as a heat carrier, and through forced circulation, to quickly remove excess heat from the mold or transfer heat to the mold to achieve and maintain the mold's set operating temperature.

[0003] Currently, mold temperature controllers maintain the internal pressure of the equipment through the heat transfer medium in the liquid level tank. The pressure of the mold temperature controller is stabilized by the volume change of the heat transfer medium due to temperature changes.

[0004] However, during long-term use, existing mold temperature controllers have shown a lack of stability. Utility Model Content

[0005] The main purpose of this invention is to provide a pressure regulating device and a mold temperature controller, which aims to improve the stability of the device.

[0006] For the above objectives, the pressure regulating device proposed in this utility model includes:

[0007] A liquid level tank having an internal cavity and an outlet, the outlet being connected to the cavity; and

[0008] A pressure stabilizing device is located at the top of the liquid level tank. The pressure stabilizing device has a gas collection space inside and a gas inlet connected to the gas collection space. The gas inlet is connected to the outlet. Gas flows between the gas collection space and the liquid level tank according to the changes in the internal liquid level of the liquid level tank to adjust the gas pressure of the cavity.

[0009] In one embodiment, the pressure stabilizing device includes an upper cap and a casting base connected together, the upper cap and the casting base cooperating to form the gas collection space, and the gas inlet being located on the casting base.

[0010] In one embodiment, the orifice diameter of the gas inlet is 11 mm to 13 mm.

[0011] In one embodiment, the pressure regulating device further includes a liquid level float structure, one end of which is connected to the casting base, and the other end of which extends into the interior of the liquid level tank to detect the liquid level in the tank.

[0012] In one embodiment, the casting base is provided with an installation port, and one end of the liquid level float structure is sealed to the installation port.

[0013] In one embodiment, the casting base is provided with a cable outlet that communicates with the mounting port.

[0014] In one embodiment, the liquid level tank is provided with a vent and a valve connected to the vent. The vent communicates with the cavity of the liquid level tank, and the valve can open or close the vent.

[0015] In one embodiment, the pressure regulating device further includes a controller, and both the valve and the liquid level float structure are communicatively connected to the controller.

[0016] In one embodiment, the pressure regulating device further includes a sealing gasket disposed between the liquid level tank and the casting base to seal the connection between the liquid level tank and the casting base; and / or,

[0017] The liquid level tank is connected to the casting base by bolts, and the side of the casting base facing the liquid level tank has a countersunk hole corresponding to the bolt.

[0018] This utility model also provides a mold temperature controller, including a pressure regulating device, which includes:

[0019] A liquid level tank having an internal cavity and an outlet, the outlet being connected to the cavity; and

[0020] A pressure stabilizing device is located at the top of the liquid level tank. The pressure stabilizing device has a gas collection space inside and a gas inlet connected to the gas collection space. The gas inlet is connected to the outlet. Gas flows between the gas collection space and the liquid level tank according to the changes in the internal liquid level of the liquid level tank to adjust the gas pressure of the cavity.

[0021] In the technical solution provided by this utility model, a liquid level tank can store the heat transfer medium and provide an expansion space for the equipment to cope with the volume change of the medium due to temperature changes. A pressure stabilizing device is located at the top of the liquid level tank and has a gas collection space inside to accommodate the gas inside the liquid level tank. The pressure stabilizing device has a gas inlet; when the liquid level inside the liquid level tank changes, the gas can flow between the gas collection space and the liquid level tank through the gas inlet to adjust the gas pressure in the cavity. Specifically, when the liquid level in the liquid level tank rises, the internal pressure of the equipment increases, and the gas can flow from the liquid level tank to the gas collection space, where it is compressed, thus reducing the pressure inside the cavity. Conversely, when the liquid level drops, the internal pressure of the equipment decreases, and the gas can flow from the gas collection space to the liquid level tank, thus increasing the pressure inside the cavity. The technical solution proposed in this utility model can automatically adjust the pressure according to changes in the liquid level, compensating for pressure fluctuations through gas compression and expansion, thereby ensuring the stability of the internal pressure of the equipment. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0023] Figure 1 A schematic diagram of an embodiment of the pressure regulating device provided by this utility model;

[0024] Figure 2 A three-dimensional structural schematic diagram of an embodiment of the pressure stabilizing device provided by this utility model;

[0025] Figure 3 An exploded structural diagram of an embodiment of the pressure stabilizing device provided by this utility model.

[0026] Explanation of icon numbers:

[0027] 10. Liquid level tank; 11. Exhaust port; 20. Pressure stabilizing device; 21. Gas inlet; 22. Top cap; 23. Casting base; 24. Mounting port; 25. Cable outlet; 30. Liquid level float structure.

[0028] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0029] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts shall fall within the scope of protection of the present invention.

[0030] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indications will also change accordingly.

[0031] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of such features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0032] For mold temperature controllers, during equipment operation, changes in the internal temperature of the system will cause large fluctuations in the internal pressure. Due to the low compressibility of water, cooling, depressurization and pressurization operations will cause large changes in system pressure. With long-term use, the relevant components will be repeatedly subjected to pressure and impact, resulting in fatigue and damage, shortening the service life of the components and causing low stability of the equipment.

[0033] In view of this, the present invention provides a pressure regulating device, wherein a pressure stabilizing device is provided on the top of the liquid level tank and is connected to the cavity of the liquid level tank, so as to collect or release the gas in the liquid level tank according to the internal temperature change of the device, thereby maintaining the stability of the overall internal pressure of the device under various conditions of normal operation, thereby ensuring the stable operation of the device and improving the performance of the device.

[0034] To better understand the above technical solution, the following detailed explanation is provided in conjunction with the accompanying drawings.

[0035] like Figure 1 , Figure 2 , Figure 3 As shown in the embodiment of this utility model, a pressure regulating device is proposed to improve stability. The pressure regulating device includes:

[0036] Liquid level tank 10, having an internal cavity and an outlet, the outlet being connected to the cavity; and

[0037] The pressure stabilizing device 20 is located at the top of the liquid level tank 10. The pressure stabilizing device 20 has a gas collection space inside and a gas inlet 21 connected to the gas collection space. The gas inlet 21 is connected to the outlet. The gas flows between the gas collection space and the liquid level tank 10 following the changes in the internal liquid level of the liquid level tank 10 to adjust the gas pressure in the cavity.

[0038] In this embodiment, the liquid level tank 10 stores the heat transfer medium and provides an expansion space for the equipment to cope with volume changes caused by temperature variations. A pressure stabilizing device 20 is located at the top of the liquid level tank 10. The pressure stabilizing device 20 has a gas collection space inside, capable of accommodating the gas inside the liquid level tank 10. The pressure stabilizing device 20 is equipped with a gas inlet 21. When the liquid level inside the liquid level tank 10 changes, gas can flow through the gas inlet 21 between the gas collection space and the liquid level tank 10 to adjust the gas pressure within the cavity. Specifically, when the liquid level in the liquid level tank 10 rises, the internal pressure of the equipment increases, and gas can flow from the liquid level tank 10 to the gas collection space. At this time, the gas is compressed in the gas collection space, stabilizing the pressure inside the cavity. Conversely, when the liquid level drops, the internal pressure of the equipment decreases, and gas can flow from the gas collection space to the liquid level tank 10, stabilizing the pressure inside the cavity. The technical solution proposed in this embodiment of the present invention can automatically adjust the pressure according to the change of liquid level, and compensate for pressure fluctuations by gas compression and expansion, thereby ensuring the stability of the internal pressure of the equipment.

[0039] Specifically, the pressure regulating equipment includes a level tank 10 and a pressure stabilizing device 20.

[0040] The liquid level tank 10 has an internal cavity for storing the heat transfer medium, which can be water or heat transfer oil. The liquid level tank 10 provides expansion space to maintain the internal pressure of the equipment.

[0041] A pressure stabilizing device 20 is installed on top of the liquid level tank 10 to stabilize the gas pressure within the cavity of the liquid level tank 10. It is understood that the pressure stabilizing device 20 allows gas to flow between the gas collection space and the liquid level tank 10 according to changes in the internal liquid level, thus maintaining internal pressure stability during heating or cooling of the equipment. The pressure stabilizing device 20 can be a gas collection tank or a gas collection pipe, with an internal gas collection space connected to the cavity of the liquid level tank 10. When the liquid level in the liquid level tank 10 rises, the liquid pushes the gas into the gas collection space for compression, maintaining stable internal pressure; when the liquid level drops, the gas expands and flows into the liquid level tank 10, compensating for pressure loss within the equipment.

[0042] Furthermore, refer to Figure 2 , Figure 3 In one embodiment of the present invention, the pressure stabilizing device 20 includes an upper cap 22 and a casting base 23 connected to each other. The upper cap 22 and the casting base 23 cooperate to form a gas collection space, and the gas inlet 21 is provided on the casting base 23.

[0043] In this embodiment, the pressure stabilizing device 20 may further include an upper cap 22 and a casting base 23 connected together. The casting base 23 is provided with a gas inlet 21. In this embodiment, the upper cap 22 and the casting base 23 are welded together to form a gas collection space that can store gas. The gas inlet 21 is connected to the gas collection space. The casting base 23 is located at the outlet of the liquid level tank 10, so that the gas collection space is connected to the cavity of the liquid level tank 10 through the gas inlet 21. Thus, according to the change in liquid level in the liquid level tank 10, gas can flow from the gas collection space to the cavity of the liquid level tank 10, or from the cavity of the liquid level tank 10 to the gas collection space, thereby maintaining the pressure balance of the system. Preferably, the casting base 23 is installed higher than the liquid level tank 10.

[0044] Furthermore, in one embodiment of this utility model, the diameter of the gas inlet 21 is 11 mm to 13 mm.

[0045] In this embodiment, the orifice diameter of the gas inlet is set to 11mm to 13mm. This setting ensures the continuity and stability of gas flow. It is understood that a larger orifice diameter results in a smaller pressure drop as gas passes through; however, an excessively large orifice diameter may lead to unstable gas flow and excessive pressure loss. Conversely, an excessively small orifice diameter increases resistance to fluid flow, resulting in a larger pressure drop. This could affect the normal operation of the system, especially when a larger flow rate is required. Furthermore, an excessively small orifice diameter may not meet the system's varying gas flow rate demands. Moreover, an excessively small orifice diameter may make the system more susceptible to shocks and vibrations, affecting its stability.

[0046] Furthermore, refer to Figure 1 In one embodiment of the present invention, the pressure regulating device further includes a liquid level float structure 30, one end of which is connected to the casting base 23, and the other end of which extends into the interior of the liquid level tank 10 to detect the liquid level of the liquid level tank 10.

[0047] In this embodiment, the liquid level float structure 30 enables monitoring of the liquid level in the liquid level tank 10, allowing for accurate detection and control of the liquid level, thereby improving the reliability of the pressure regulating equipment. The liquid level float structure 30 can be detachably connected to the casting base 23, for example, through threaded connection, snap-fit, or bolt connection. It is understood that when the casting base 23 is vertically placed on top of the liquid level tank 10, the liquid level float structure 30 can extend into the liquid level tank 10 to measure the liquid level.

[0048] Furthermore, refer to Figure 1 , Figure 2 In one embodiment of this utility model, the casting base 23 is provided with an installation port 24, and one end of the liquid level float structure 30 is sealed and connected to the installation port 24.

[0049] In this embodiment, the mounting port 24 ensures that the liquid level float structure 30 can be stably installed on the casting base 23, thus improving the accuracy of liquid level detection. The mounting port 24 can be a threaded hole for easy installation and maintenance of the liquid level float structure 30, allowing for quick disassembly and reinstallation when the float needs replacement or maintenance. In this embodiment, the mounting port 24 needs to have good sealing performance to reduce the impact of gas leakage within the cavity of the liquid level tank 10 on the internal pressure. Sealing can be achieved using O-rings, sealant, or other sealing elements.

[0050] Furthermore, refer to Figure 1 , Figure 2 In one embodiment of this utility model, the casting base 23 is provided with a cable outlet 25, which is connected to the mounting port 24.

[0051] In the technical solution adopted in this embodiment, the outlet 25 can provide a wiring outlet for the liquid level float structure 30 while ensuring a sealed connection between the liquid level float structure 30 and the mounting port 24. This allows the liquid level float structure 30 to transmit signals to external control equipment through the outlet 25 when detecting changes in liquid level.

[0052] Furthermore, refer to Figure 1In one embodiment of the present invention, the liquid level tank 10 is provided with an exhaust port 11 and a valve connected to the exhaust port 11. The exhaust port 11 is connected to the cavity of the liquid level tank 10, and the valve can open or close the exhaust port 11.

[0053] In this embodiment, the level tank 10 is further provided with an exhaust port 11 and a valve connected to the exhaust port 11. In this embodiment, the exhaust port 11 is connected to the cavity of the level tank 10, and the exhaust port 11 can release excess gas. The valve is connected to the exhaust port 11 and can open or close the exhaust port 11. When the equipment is running, the internal gas will be discharged through the exhaust port 11 of the level tank 10. When the level float structure 30 detects the liquid level, the exhaust port 11 of the level tank 10 is closed, so that the internal gas can flow between the gas collection space and the cavity of the level tank 10, maintaining stable internal pressure. It is understood that the height of the exhaust port 11 is greater than the lowest liquid level that the level float structure 30 can detect.

[0054] Furthermore, in one embodiment of this utility model, the pressure regulating device also includes a controller, and the valve and the liquid level float structure 30 are all communicatively connected to the controller.

[0055] In this embodiment, the controller can transmit the liquid level data detected by the liquid level float structure 30 in real time. Upon receiving the liquid level data, the controller sends a control signal to close the vent port 11. The controller improves the system's response speed and control accuracy, ensuring stable pressure and liquid level, thereby enhancing the overall system efficiency and safety.

[0056] Furthermore, refer to Figure 1 , Figure 2 In one embodiment of this utility model, the pressure regulating device further includes a sealing gasket, which is disposed between the liquid level tank 10 and the casting base 23 to seal the connection between the liquid level tank 10 and the casting base 23; and / or,

[0057] The liquid level tank 10 is connected to the casting base 23 by bolts. The casting base 23 has a countersunk hole corresponding to the bolt on the side facing the liquid level tank 10.

[0058] In this embodiment, the sealing gasket ensures a tight seal at the connection between the level tank 10 and the casting base 23, effectively reducing the risk of gas leakage and thus guaranteeing the stability of the internal environment. The gasket material can include non-metallic materials such as rubber, synthetic resin, and polytetrafluoroethylene, offering good elasticity and sealing performance. Furthermore, the bolted connection between the casting base 23 and the level tank 10 is simple and easy to implement. The countersunk holes on the casting base 23 corresponding to the bolts allow the bolt heads to be placed within the countersunk holes, preventing the bolts from protruding from the casting base 23 and further enhancing the seal between the casting base 23 and the level tank 10.

[0059] This utility model also provides a mold temperature controller, which includes the pressure regulating device of the above embodiments. The specific structure of the pressure regulating device is as described in the above embodiments. Since this mold temperature controller adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, and will not be described in detail here.

[0060] The above description is merely an exemplary embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made using the contents of the present invention specification and drawings under the technical concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A pressure regulating device, characterized in that, include: A liquid level tank having an internal cavity and an outlet, the outlet being connected to the cavity; and A pressure stabilizing device is located at the top of the liquid level tank. The pressure stabilizing device has a gas collection space inside and a gas inlet connected to the gas collection space. The gas inlet is connected to the outlet. Gas flows between the gas collection space and the liquid level tank according to the changes in the internal liquid level of the liquid level tank to adjust the gas pressure of the cavity.

2. The pressure regulating device as described in claim 1, characterized in that, The pressure stabilizing device includes an upper cap and a casting base connected together. The upper cap and the casting base cooperate to form the gas collection space, and the gas inlet is located on the casting base.

3. The pressure regulating device as described in claim 2, characterized in that, The diameter of the gas inlet is 11 mm to 13 mm.

4. The pressure regulating device as described in claim 2, characterized in that, The pressure regulating device also includes a liquid level float structure, one end of which is connected to the casting base, and the other end of which extends into the interior of the liquid level tank to detect the liquid level in the tank.

5. The pressure regulating device as described in claim 4, characterized in that, The casting base is provided with an installation port, and one end of the liquid level float structure is sealed and connected to the installation port.

6. The pressure regulating device as described in claim 5, characterized in that, The casting base is provided with a cable outlet, which is connected to the mounting port.

7. The pressure regulating device as described in claim 4, characterized in that, The liquid level tank is provided with an exhaust port and a valve connected to the exhaust port. The exhaust port is in communication with the cavity of the liquid level tank, and the valve can open or close the exhaust port.

8. The pressure regulating device as described in claim 7, characterized in that, The pressure regulating device also includes a controller, and the valve and the liquid level float structure are both communicatively connected to the controller.

9. The pressure regulating device as described in claim 2, characterized in that, The pressure regulating device further includes a sealing gasket disposed between the liquid level tank and the casting base to seal the connection between the liquid level tank and the casting base; and / or, The liquid level tank is connected to the casting base by bolts, and the side of the casting base facing the liquid level tank has a countersunk hole corresponding to the bolt.

10. A mold temperature controller, characterized in that, Includes the pressure regulating device as described in any one of claims 1 to 9.

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