Heat preservation type vacuum box

Abstract

The vacuum box is arranged on the center line of a filter, a contact plane is arranged on the upper portion of the vacuum box, the contact plane makes contact with a working tape and is attached to the working tape in a relative sliding mode, an opening is formed in the middle of the vacuum box and extends downwards to the inner space of the vacuum box, and the vacuum box is provided with a rhombic liquid storage space. A liquid outlet inclining downwards is formed in the side face of the lower edge of the vacuum box and connected with a pipeline, a heat preservation shell is arranged outside the rhombic liquid storage space in a surrounding mode, the heat preservation shell is welded and fixed outside the vacuum box, the two ends of the heat preservation shell are closed, and an isolation space is formed between the heat preservation shell and the vacuum box. The heat preservation shell is arranged outside the main space of the vacuum box in a surrounding mode, the heat preservation shell forms an outer-layer heat preservation structure, direct heat exchange of the vacuum box to the outside can be reduced, the heat preservation effect is achieved, the whole heat preservation shell is of a closed structure, the heat exchange amount is low, and the heat preservation effect is good.

Description

Technical Field

[0001] The utility model relates to an improved structure of a vacuum box of a filter, in particular to a heat-insulating vacuum box. Background Art

[0002] A belt-type vacuum filter is a negative pressure material passing device with a circulating working belt. The lower part of the working belt is a vacuum box, which is used to generate negative pressure and draw the liquid downward to separate the solid and liquid. The vacuum box is located in the middle of the filter and is arranged along the length direction. The liquid is concentrated inside it and flows into the collection device through a pipe. The conventional vacuum box is a box structure made of bent metal plates, and the main working structure of the filter as a whole is exposed and in direct contact with the working environment. Therefore, the vacuum box will directly exchange heat with the working environment and has no insulation effect. For production and processing with insulation requirements, the vacuum box of the filter is the main structure that cannot meet the requirements, so insulation improvements are needed. Utility Model Content

[0003] The purpose of the utility model is to overcome the above-mentioned shortcomings in the prior art and to provide a heat-insulating vacuum box.

[0004] The technical solution adopted by the utility model to solve the above problems is: the vacuum box is arranged on the center line of the filter, the upper part of the vacuum box is provided with a contact plane, the contact plane contacts and slides with the working belt, the middle part of the vacuum box is provided with an opening, the opening extends downward to its internal space, the vacuum box has a rhombus-shaped liquid storage space, a downwardly inclined liquid discharge port is arranged on the lower side of the vacuum box, the liquid discharge port is connected to the pipeline, and an insulation shell is arranged outside the rhombus-shaped liquid storage space, the insulation shell is welded and fixed to the outside of the vacuum box and is closed at both ends, and an isolation space is formed between the insulation shell and the vacuum box. The upper contact plane of the vacuum box is in contact with the working belt, and the liquid can enter the vacuum box through the working belt. The liquid storage space in the vacuum box is used to concentrate and guide the liquid, and an insulation shell is arranged outside the main space of the vacuum box, and the insulation shell forms an outer insulation structure, which can reduce the direct heat exchange of the vacuum box to the outside and achieve the insulation effect. The insulation shell is a closed structure as a whole, with low heat exchange and good insulation effect.

[0005] Furthermore, a pressure nozzle is fixedly provided on the heat-insulating shell, a flat fixing seat is provided on the heat-insulating shell, the pressure nozzle is installed on the fixing seat, one side of the pressure nozzle is located on the inner side of the heat-insulating shell, and the other side is the connecting end of the pressure nozzle and is connected to the air pipe, and the air pipe is connected to the air pressure regulating device. The pressure nozzle is provided on the heat-insulating shell, and the space inside the heat-insulating shell can be evacuated through an air pressure regulating device such as an air pump, thereby reducing the heat transfer medium, achieving a better heat-insulating and isolating effect, and maintaining the heat-insulating effect for a long time.

[0006] Furthermore, the air pressure nozzle has a one-way valve, which maintains the air pressure in the heat-insulating shell stable. The one-way valve can achieve stable air pressure and extend the duration of the heat-insulating effect.

[0007] Furthermore, the heat-insulating shell is circular or elliptical in cross section, with an opening at the upper end thereof and welded to the outside of the opening of the vacuum box, the heat-insulating shell surrounds the outside of the liquid storage space below the opening, and a vacuum space is formed between the heat-insulating shell and the box wall of the vacuum box through the air pressure regulating device. The heat-insulating shell is circular or elliptical, which is convenient for installation on the outer layer of the structure of the original vacuum box, with low difficulty in remodeling old equipment, achieving better economic benefits, and having a better maintenance effect on the pressure space.

[0008] Furthermore, the drainage port is set through the insulation shell, the joint between the insulation shell and the outer wall of the drainage hole is filled and sealed by welding, and the drainage port extends to the outside of the insulation shell by the length of the connecting pipe. The drainage port is the main structure protruding from the outer shape of the vacuum box, which must be set through the insulation shell to achieve a good drainage effect, and in order to connect the pipeline normally, it can be extended to a certain extent to achieve a stable and sealed connection of the pipeline.

[0009] Compared with the prior art, the utility model has the following advantages and effects: the design is a structural improvement of an insulated vacuum box, which can effectively improve the insulation effect of the belt filter during the filtration process, improve production efficiency, avoid damaging the characteristics of production materials, improve product quality, and has a good energy-saving effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic structural diagram of a cross section of a heat-insulating vacuum box.

[0011] Figure 2 It is an enlarged structural diagram of the welding point between the thermal insulation shell and the vacuum box.

[0012] Figure 3 It is a schematic diagram of the enlarged structure at the air pressure nozzle.

[0013] In the figure: 1. vacuum box, 2. contact plane, 3. opening, 4. liquid storage space, 5. drain port, 6. thermal insulation shell, 7. isolation space, 8. air pressure nozzle, 9. fixing seat, 10. connection end, A, welding point. DETAILED DESCRIPTION

[0014] The present invention will be further described in detail below with reference to the accompanying drawings and through examples. The following examples are provided to explain the present invention, but the present invention is not limited to the following examples.

[0015] A heat-insulating vacuum box, wherein the vacuum box 1 is arranged on the center line of the filter, a contact plane 2 is arranged on the upper part of the vacuum box 1, the contact plane 2 contacts with the working belt and slides relatively, an opening 3 is arranged in the middle part of the vacuum box 1, the opening 3 extends downward to its internal space, the vacuum box 1 has a rhombus-shaped liquid storage space 4, a downwardly inclined liquid discharge port 5 is arranged on the lower side of the vacuum box 1, the liquid discharge port 5 is connected to a pipeline, and a heat-insulating outer shell 6 is arranged outside the rhombus-shaped liquid storage space 4, the heat-insulating outer shell 6 is welded and fixed to the outside of the vacuum box 1 and is sealed at both ends, and an isolation space 7 is formed between the heat-insulating outer shell 6 and the vacuum box 1.

[0016] An air pressure nozzle 8 is fixedly arranged on the heat-insulating outer shell 6, and a flat fixing seat 9 is arranged on the heat-insulating outer shell 6. The air pressure nozzle 8 is installed on the fixing seat 9, one side of which is located on the inner side of the heat-insulating outer shell 6, and the other side is the connecting end 10 of the air nozzle and is connected to the air pipe, and the air pipe is connected to the air pressure regulating device.

[0017] The air pressure nozzle 8 has a one-way valve, which maintains the air pressure in the heat-insulating shell 6 stable.

[0018] The heat-insulating shell 6 is circular or elliptical in cross section, and has an opening 3 at its upper end which is welded and closed to the outer side of the opening 3 of the vacuum box 1. The heat-insulating shell 6 surrounds the outer side of the liquid storage space 4 below the opening 3, and a vacuum space is formed between the heat-insulating shell 6 and the box wall of the vacuum box 1 through an air pressure regulating device.

[0019] The drain port 5 is arranged to penetrate the heat-insulating shell 6 , and the joint between the heat-insulating shell 6 and the outer wall of the drain hole is filled and sealed by welding. The drain port 5 extends to the outside of the heat-insulating shell 6 by the length of the connecting pipe.

[0020] It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and that the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary rather than restrictive. The scope of the present invention is defined by the claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim involved.

[0021] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A heat-insulating vacuum box, characterized in that: The vacuum box (1) is arranged on the center line of the filter. A contact plane (2) is arranged on the upper part of the vacuum box (1). The contact plane (2) contacts and slides with the working belt. An opening (3) is arranged in the middle of the vacuum box (1). The opening (3) extends downward to its internal space. The vacuum box (1) has a rhombus-shaped liquid storage space (4). A downwardly inclined liquid discharge port (5) is arranged on the lower side of the vacuum box (1). The liquid discharge port (5) is connected to a pipeline. An insulating outer shell (6) is arranged outside the rhombus-shaped liquid storage space (4). The insulating outer shell (6) is welded and fixed to the outside of the vacuum box (1) and is sealed at both ends. An isolation space (7) is formed between the insulating outer shell (6) and the vacuum box (1).

2. The heat-insulating vacuum box according to claim 1, characterized in that: The heat-insulating outer shell (6) is fixedly provided with an air pressure nozzle (8), and a flat fixing seat (9) is provided on the heat-insulating outer shell (6). The air pressure nozzle (8) is installed on the fixing seat (9), one side of which is located on the inner side of the heat-insulating outer shell (6), and the other side is a connecting end (10) of the air nozzle and is connected to an air pipe, and the air pipe is connected to an air pressure regulating device.

3. The heat-insulating vacuum box according to claim 2, characterized in that: The air pressure nozzle (8) has a one-way valve, and the one-way valve maintains the air pressure in the heat-insulating outer shell (6) stable.

4. The heat-insulating vacuum box according to claim 1, characterized in that: The heat-insulating outer shell (6) is circular or elliptical in cross section, has an opening (3) at its upper end and is welded and sealed to the outer side of the opening (3) of the vacuum box (1); the heat-insulating outer shell (6) surrounds the outer side of the liquid storage space (4) below the opening (3); a vacuum space is formed between the heat-insulating outer shell (6) and the box wall of the vacuum box (1) via an air pressure regulating device.

5. The heat-insulating vacuum box according to claim 1, characterized in that: The drainage port (5) is arranged to penetrate the heat-insulating outer shell (6), and the joint between the heat-insulating outer shell (6) and the outer wall of the drainage hole is filled and sealed by welding. The drainage port (5) extends to the outside of the heat-insulating outer shell (6) by the length of the connecting pipe.

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