Screen exchanger with cooling function

Abstract

The utility model relates to the technical field of filters, in particular to a screen exchanger with a cooling function, which is characterized in that the structure of a filter plate is improved on the basis of the existing screen exchanger, and a cooling cavity is arranged in the filter plate, so that the filter plate can be cooled by matching with a cooling device; the temperature of the filter plate can be reduced to a certain extent; and meanwhile, the cooling device cools the hydraulic driving mechanism through the heat exchange structure, the temperature of the hydraulic driving mechanism can be reduced to the maximum extent, and the service life of the hydraulic driving mechanism is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of filter technology, and in particular to a screen changer with a cooling function. Background Technology

[0002] A screen changer is a manual or automatic switching device comprising one or more filter screens. Besides separating solids from liquids, its internal filter structure also filters out foreign particles and impurities during the solid flow process. This is particularly important in pharmaceutical manufacturing, especially in the production of pharmaceutical gels, where filters are needed to separate the liquid from the gel mixture, leaving the gelatinous material for cutting and granulation.

[0003] Current screen changers typically have multiple filters that are used in rotation. This is primarily because during filter use, the compressed material can easily clog the mesh, leading to clumping and curling during the subsequent compression process, directly impacting the quality of the final product. Furthermore, the extruded material itself generates heat, causing the entire filter to reach very high temperatures. This excessive heat is conducted to the drive mechanism, such as the motor or cylinder, significantly reducing its lifespan. Utility Model Content

[0004] To achieve the above objectives, this utility model provides a screen changer with a cooling function, including an extrusion head and a hydraulic drive mechanism. A filter plate is movably inserted inside the extrusion head, and a discharge channel is provided on the extrusion head. The filter plate blocks the discharge channel. The hydraulic drive mechanism is used to drive the filter plate to move relative to the extrusion head. At least two filter screens are provided on the filter plate, and a cooling cavity is provided inside the filter plate. A heat exchange structure is provided outside the hydraulic drive mechanism. Both the heat exchange structure and the cooling cavity are connected to a cooling device.

[0005] In some possible implementations, a heat dissipation pad is provided at the upper end of the filter plate, the heat dissipation pad is fixed to the upper end of the filter plate by screws, and the telescopic end of the hydraulic drive mechanism is connected to the heat dissipation pad through a heat-insulating connecting seat.

[0006] In some possible implementations, a plurality of heat dissipation fins are provided on the outer periphery of the heat dissipation pad.

[0007] In some possible implementations, the filter plate has an opening at its upper part that connects to a cooling cavity, and the heat dissipation pad seals the opening.

[0008] In some possible implementations, the filter plate is provided with at least two filter holes, and the filter screen can be detachably installed in the corresponding filter holes.

[0009] In some possible implementations, the cooling device includes a water tank, a cooling pipe, and a supply pump mounted on the cooling pipe. The inlet end of the cooling pipe is connected to one side of the water tank, and the other end of the cooling pipe is connected to the inlet ends of the cooling cavity and the heat exchange structure, respectively. The outlet ends of the cooling cavity and the heat exchange structure are connected to the water tank through a return pipe, and a radiator is mounted on the return pipe.

[0010] In some possible implementations, the cooling pipe is connected to the water inlet of the cooling cavity and the heat exchange structure via a tee pipe.

[0011] In some possible implementations, the hydraulic drive mechanism is a hydraulic cylinder.

[0012] In some possible implementations, the extrusion head is provided with a bracket, and the hydraulic drive mechanism and cooling device are both mounted on the bracket.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows: The screen changer with cooling function of this utility model improves the structure of the filter plate on the basis of the existing technology, and sets a cooling cavity inside the filter plate. This can be used in conjunction with the cooling device to cool the filter plate, which can cool the temperature of the filter plate to a certain extent. At the same time, the cooling device also cools the hydraulic drive mechanism through the heat exchange structure, which can reduce the temperature of the hydraulic drive mechanism to the greatest extent and improve the service life of the hydraulic drive mechanism. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments 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 these drawings without creative effort.

[0015] Figure 1 A front view of a screen changer with cooling function provided in an embodiment of this utility model;

[0016] Figure 2 A top view of a screen changer with cooling function provided in an embodiment of this utility model;

[0017] Figure 3 for Figure 2 Cross-sectional view along the AA direction;

[0018] Figure 4 A schematic diagram of the cooling device provided in this embodiment of the utility model.

[0019] Figure label:

[0020] Extrusion head 10, discharge channel 11, support 12;

[0021] Hydraulic drive mechanism 20, heat exchange structure 21;

[0022] Filter plate 30, filter screen 31, cooling cavity 32, heat dissipation pad 33, heat insulation connector 34, heat dissipation fins 35, filter holes 36;

[0023] Cooling device 40, water tank 41, cooling pipe 42, supply pump 43, return water pipe 44, radiator 45. Detailed Implementation

[0024] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model. Hereinafter, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the embodiments of this disclosure, unless otherwise stated, "a plurality of" means two or more.

[0025] Reference Figures 1 to 4 As shown, this utility model provides a screen changer with a cooling function, including an extrusion head 10 and a hydraulic drive mechanism 20. A filter plate 30 is movably inserted inside the extrusion head 10, and a discharge channel 11 is provided on the extrusion head 10. The filter plate 30 is blocked on the discharge channel 11. The hydraulic drive mechanism 20 is used to drive the filter plate 30 to move relative to the extrusion head 10. At least two filter screens 31 are provided on the filter plate 30. A cooling cavity 32 is provided inside the filter plate 30. A heat exchange structure 21 is provided outside the hydraulic drive mechanism 20. The heat exchange structure 21 and the cooling cavity 32 are both connected to a cooling device 40.

[0026] In this application, the extrusion head 10 is connected to the output port of the extruder, and the discharge channel 11 is connected to the output port of the extruder. Furthermore, sliding portions are provided on both sides of the filter plate 30, and the extrusion head 10 has mounting holes that cross the discharge channel 11. The filter plate 30 is slidably installed in the mounting holes, and sealing elements are provided on both sides of the mounting holes along the axial direction of the discharge channel 11 to ensure a seal between the filter plate 30 and the mounting holes.

[0027] In the above embodiments, the filter plate 30 is provided with at least two filter holes 36, and the filter screen 31 can be detachably installed in the corresponding filter hole 36. This facilitates switching back and forth and further ensures that the temperature of the entire filter screen 31 is within a suitable range. It also facilitates regular cleaning by the staff. In this application, two filter holes 36 are preferred, so installing two filter screens 31 facilitates replacement. In this application, the hydraulic drive mechanism 20 is a hydraulic cylinder, which can improve the heat resistance of the entire mechanism. At the same time, using hydraulic power as the driving force also facilitates the staff to cool the hydraulic oil.

[0028] In the above embodiments, to facilitate the installation of the hydraulic drive mechanism 20 and the cooling device 40, in one embodiment of this application, a bracket 12 is provided on the extrusion head 10, and both the hydraulic drive mechanism 20 and the cooling device 40 are mounted on the bracket 12. Of course, in some embodiments, when the cooling device 40 is a small cooling structure, such as a small liquid cooling device, it can be mounted on the bracket 12. If a large water cooling device is used, the cooling device 40 cannot be mounted on the bracket 12.

[0029] The screen changer with cooling function of this utility model improves the structure of the filter plate 30 on the basis of the existing one. A cooling cavity 32 is provided in the filter plate 30, which can work with the cooling device 40 to cool the filter plate 30 to a certain extent. At the same time, the cooling device 40 also cools the hydraulic drive mechanism 20 through the heat exchange structure 21, which can reduce the temperature of the hydraulic drive mechanism 20 to the greatest extent and improve the service life of the hydraulic drive mechanism 20.

[0030] See Figure 3 In some possible implementations, a heat dissipation pad 33 is provided at the upper end of the filter plate 30. The heat dissipation pad 33 is fixed to the upper end of the filter plate 30 by screws, and the telescopic end of the hydraulic drive mechanism 20 is connected to the heat dissipation pad 33 through a heat-insulating connecting seat 34. In the above embodiment, the main function of the heat dissipation pad 33 is to provide natural heat dissipation for the cooling chamber 32 or the entire filter plate 30, reducing heat conduction and the heat dissipation required by the cooling device 40. The heat-insulating connecting seat 34 further reduces the heat transferred from the heat dissipation pad 33 to the hydraulic drive mechanism 20, thereby improving the service life of the hydraulic drive mechanism 20.

[0031] In the above-mentioned improvement scheme, in order to improve heat dissipation capacity, a number of heat dissipation fins 35 are provided on the outer periphery of the heat dissipation pad 33.

[0032] In the above embodiments, in order to allow the liquid in the cooling cavity 32 to dissipate heat through the heat dissipation pad 33, in one embodiment of this application, the upper part of the filter plate 30 is provided with an opening that connects to the cooling cavity 32, and the heat dissipation pad 33 is sealed on the opening. This design allows the coolant in the cooling cavity 32 to be transferred outward through the heat dissipation pad 33.

[0033] See Figure 1 and Figure 4 In one embodiment of this application, water cooling is used to improve the cooling effect. The cooling device 40 includes a water tank 41, a cooling pipe 42, and a supply pump 43 mounted on the cooling pipe 42. The inlet of the cooling pipe 42 is connected to one side of the water tank 41, and the other end of the cooling pipe 42 is connected to the inlet of both the cooling cavity 32 and the heat exchange structure 21. The outlets of the cooling cavity 32 and the heat exchange structure 21 are connected to the water tank 41 via a return pipe 44, on which a radiator 45 is mounted. The radiator 45 has a finned and fan-based design. Of course, considering actual usage and installation location, the water tank 41, cooling pipe 42, and supply pump 43 are all miniaturized to facilitate installation. In this application, the heat exchange structure 21 can be a conventional radiator, or it can adopt a design similar to a computer heatsink; details are not provided here.

[0034] In some possible implementations, in the above embodiments, in order to facilitate the simultaneous supply of cooling water to the cooling chamber 32 and the heat exchange structure 21, the cooling pipe 42 is connected to the water inlet of the cooling chamber 32 and the heat exchange structure 21 via a tee pipe.

[0035] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions within the technical scope disclosed in this utility model should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the protection scope of the claims.

Claims

1. A screen changer with a cooling function, comprising an extrusion head and a hydraulic drive mechanism, characterized in that, A filter plate is movably inserted inside the extrusion head. A discharge channel is provided on the extrusion head. The filter plate blocks the discharge channel. The hydraulic drive mechanism is used to drive the filter plate to move relative to the extrusion head. At least two filter screens are provided on the filter plate. A cooling cavity is provided inside the filter plate. A heat exchange structure is provided outside the hydraulic drive mechanism. The heat exchange structure and the cooling cavity are both connected to a cooling device.

2. A screen changer with cooling function according to claim 1, characterized in that, A heat dissipation pad is provided at the upper end of the filter plate. The heat dissipation pad is fixed to the upper end of the filter plate by screws. The telescopic end of the hydraulic drive mechanism is connected to the heat dissipation pad through a heat-insulating connecting seat.

3. A screen changer with cooling function according to claim 2, characterized in that, The heat dissipation pad has several heat dissipation fins on its outer periphery.

4. A screen changer with cooling function according to claim 2, characterized in that, The filter plate has an opening at its upper part, which connects to the cooling cavity, and the heat dissipation pad seals the opening.

5. A screen changer with cooling function according to claim 1, characterized in that, The filter plate is provided with at least two filter holes, and the filter screen can be detachably installed in the corresponding filter holes.

6. A screen changer with cooling function according to claim 1, characterized in that, The cooling device includes a water tank, a cooling pipe, and a supply pump installed on the cooling pipe. The inlet end of the cooling pipe is connected to one side of the water tank, and the other end of the cooling pipe is connected to the inlet ends of the cooling cavity and the heat exchange structure, respectively. The outlet ends of the cooling cavity and the heat exchange structure are connected to the water tank through a return water pipe, and a radiator is installed on the return water pipe.

7. A screen changer with cooling function according to claim 6, characterized in that, The cooling pipe is connected to the water inlet of the cooling cavity and the heat exchange structure via a T-connector.

8. A screen changer with cooling function according to claim 1, characterized in that, The hydraulic drive mechanism is a hydraulic cylinder.

9. A screen changer with cooling function according to claim 1, characterized in that, The extrusion head is equipped with a bracket, and the hydraulic drive mechanism and cooling device are both mounted on the bracket.

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