Rapid filter-press filter cake discharging device and filter press

Abstract

The utility model belongs to the technical field of slurry washing, and discloses a quick discharge device for filter-press filter cakes and a filter press. The device comprises a guide hopper and a spiral conveying mechanism which are connected with each other, an anti-corrosion and anti-sticking layer is arranged on the inner wall of the guide hopper; an anti-corrosion layer is arranged on the inner wall of the spiral conveying mechanism. According to the quick discharging device for the filter-press filter cakes, the guide hopper and the spiral conveying mechanism are arranged, and the anti-corrosion and anti-sticking arrangement of the guide hopper and the anti-corrosion arrangement of the spiral conveying mechanism are combined, so that the risk that the filter-press filter cakes are polluted can be reduced while the filter-press filter cakes are primarily crushed and efficiently transferred.

Description

Technical Field

[0001] The utility model belongs to the technical field of slurry washing, and particularly relates to a quick unloading device for filter cakes of filter presses. Background Art

[0002] In the field of ceramic powder, slurry washing, filtration and separation are generally carried out by filter press. After the filter press filters the ceramic slurry to be washed and filtered, a filter cake layer will be formed. In the prior art, when the filter cake is unloaded, it is discharged by its own gravity and the vibration of the pull plate, and then the hopper is used to receive and manually transfer it.

[0003] The existing technology has the following disadvantages: (1) the filter cake is easily contaminated by the unloading device during the unloading process; (2) since the filter press is an extrusion filter, it is easy for the filter cake to fall into the unloading hopper below in large blocks, which is not conducive to secondary dispersion; and since the filter cake itself has a certain viscosity, the use of a conventional hopper can easily cause the hopper to be blocked; (3) the low degree of automation and other disadvantages. Utility Model Content

[0004] In order to solve the above problems, the utility model provides a filter press cake quick unloading device, which can improve the unloading efficiency and reduce the risk of filter press cake being contaminated.

[0005] A filter cake quick unloading device comprises a guide hopper and a screw conveying mechanism which are connected to each other; the inner wall of the guide hopper is provided with an anti-corrosion and anti-sticking layer; the inner wall of the screw conveying mechanism is provided with an anti-corrosion layer.

[0006] In this solution, by setting up a guide hopper and a screw conveying mechanism, combined with the anti-corrosion and anti-sticking layer design of the guide hopper and the anti-corrosion layer setting of the screw conveying mechanism, the risk of filter cake contamination can be reduced while improving the unloading efficiency.

[0007] Furthermore, the anti-corrosion and anti-sticking layer is made of polypropylene.

[0008] Furthermore, the anti-corrosion layer is made of polytetrafluoroethylene.

[0009] Furthermore, the guide hopper has openings at both ends, the upper end opening is larger than the lower end opening, and the lower end opening is sealed and connected to the screw conveying mechanism.

[0010] Furthermore, the screw conveying mechanism includes a shell and a screw in the shell; an inlet is provided at the upper part of the shell, and the inlet is sealed and connected to the guide hopper; a discharge port is provided at the bottom of the shell; and the screw is connected to a motor.

[0011] Furthermore, the discharge port includes a first discharge port and a second discharge port, which are respectively arranged at the bottom of both ends of the shell.

[0012] Furthermore, the screw is arranged to be inclined relative to the horizontal direction.

[0013] Another object of the utility model is to provide a filter press, which is provided with a filter press filter plate; the filter press includes the above-mentioned filter press filter cake quick unloading device, and the guide hopper is arranged at the bottom of the filter press filter plate.

[0014] Furthermore, an air purge device is provided at the filter plate of the filter press.

[0015] Compared with the prior art, one or more of the above technical solutions can achieve at least one of the following beneficial effects:

[0016] (1) The anti-corrosion and anti-sticking inverted trapezoidal guide hopper combined with the anti-corrosion spiral conveying mechanism makes the material unloading process smoother, avoids material unloading accumulation and blockage, and also ensures the purity of the product;

[0017] (2) The double discharge ports of the spiral conveying mechanism make material transfer more efficient and convenient. The initial crushing of the filter cake can be completed during the transfer and transportation process, and the device can be started with one button;

[0018] (3) The whole set of equipment has a high degree of automation and controllable process, which is suitable for large-scale industrial production. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a schematic structural diagram of the quick unloading device for filter press cake of Example 1; wherein, Figure (a) is a front view of the quick unloading device for filter press cake; and Figure (b) is a left view of the quick unloading device for filter press cake.

[0021] Figure 2 It is a top view of the guide hopper of Example 1.

[0022] Figure 3 It is a structural schematic diagram of the spiral conveying mechanism of Example 1.

[0023] In the figure, 1, filter plate of filter press; 2, guide hopper; 21, metal layer; 22, anti-corrosion and anti-sticking layer; 3, screw conveying mechanism; 31, control cabinet; 32, shell; 33, screw; 34, first discharge port; 35, second discharge port. DETAILED DESCRIPTION

[0024] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0025] Example 1

[0026] The present embodiment provides a device for quickly unloading filter cakes from filter presses, which can realize rapid unloading of filter cakes, primary crushing and efficient transfer of the filter cakes, while reducing the risk of filter cake contamination.

[0027] The filter cake quick unloading device comprises a guide hopper 2 and a screw conveying mechanism 3 which are connected to each other.

[0028] like Figure 2 As shown, the guide hopper 2 uses a metal frame, such as a metal layer 21, and the inner wall of the metal frame is provided with an anti-corrosion and anti-sticking layer 22. Specifically, the anti-corrosion and anti-sticking layer 22 uses a light polypropylene plate and maintains a certain inclination and smoothness to ensure that the filter cake is not contaminated and can easily fall into the screw conveying mechanism 3 at the bottom.

[0029] The guide hopper 2 has openings at both ends, the upper opening is larger than the lower opening, and is in an inverted trapezoidal shape. The lower opening is connected to the screw conveying mechanism 3 .

[0030] like Figure 3 As shown, the screw conveying mechanism 3 includes a housing 32 and a screw 33 in the housing; a feed port is provided at the upper part of the housing, and the feed port is sealed and connected to the guide hopper 2; a discharge port is provided at the bottom of the housing 32; the discharge port includes a first discharge port 34 and a second discharge port 35, which are respectively arranged at the bottom of both ends of the housing 32. The screw 33 is connected to a motor, and the forward and reverse rotation of the motor is controlled by the control cabinet 31.

[0031] As an implementation method, the screw 33 is tilted relative to the horizontal direction, and the commonly used discharge port is set at the lower end of the screw 33 by gravity. The first discharge port 34 is set at the lower end of the screw 33, and the second discharge port 35 is set at the higher end of the screw 33. The control cabinet 31 of the screw conveying mechanism 3 has a forward and reverse design of the screw 33, which can control the filter cake to be selectively transferred to the discharge port on one side after the initial crushing, increasing the selectivity of the next operation of the filter cake. In this embodiment, an anti-corrosion layer is provided inside the screw conveying mechanism 3. Specifically, the anti-corrosion layer is a layer of polytetrafluoroethylene material sprayed on the inner wall of the screw 33 and the screw conveying mechanism 3.

[0032] This embodiment also provides a filter press, including the above-mentioned filter cake quick unloading device, the filter press is provided with a filter plate 1, the filter plate 1 is provided with an air purge device, and the purge air uses compressed air and is precisely filtered.

[0033] like Figure 1 As shown, the guide hopper 2 is arranged at the bottom of the filter plate 1 of the filter press. The opening at the upper end of the guide hopper 2 is arranged parallel to the lower edge of the filter plate 1 of the filter press, and its length and width are both greater than the width and total length of the filter plate 1 of the filter press, exceeding by about 10 cm, to ensure that the filter cake falls into the guide hopper 2 below when unloading.

[0034] The working principle of this embodiment is as follows:

[0035] When the air purge of the filter cake is completed and the plate is vibrated for unloading, the filter cake falls into the screw conveying mechanism 3 at the bottom along the guide hopper 2 under the action of its own gravity and vibration force; the block filter cake is crushed and conveyed to the discharge port on one side under the action of the opened screw 33 for the next step of processing. Among them, the full opening of the screw 33 effectively improves the initial crushing and transfer efficiency of the filter cake, and the discharge port of the filter cake can be selected according to needs.

[0036] The filter cake quick unloading device of the present embodiment adopts a continuous integrated design. During the unloading and transfer process of the device, the material is completely free from impurity contamination, and the material contact parts are all non-metallic, which has great advantages in terms of convenient operation and production and product purity assurance. The whole set of equipment has a high degree of automation, reducing manual participation, and can also select material transfer paths according to different back-end process paths, which is suitable for the requirements of large-scale industrial production.

[0037] Obviously, the above embodiments are merely examples for clearly illustrating the technical solution of the utility model, and are not intended to limit the implementation methods of the utility model. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. Any modifications, equivalent substitutions and improvements made within the spirit and principles of the utility model should be included in the protection of the claims of the utility model.

Claims

1. A device for rapid unloading of filter cakes from a filter press, characterized in that: The device comprises a material guide hopper and a screw conveying mechanism which are connected to each other; the inner wall of the material guide hopper is provided with an anti-corrosion and anti-sticking layer; the inner wall of the screw conveying mechanism is provided with an anti-corrosion layer.

2. The filter cake quick discharge device according to claim 1, characterized in that: The anti-corrosion and anti-sticking layer is made of polypropylene.

3. The filter cake quick discharge device according to claim 1, characterized in that: The anti-corrosion layer is made of polytetrafluoroethylene.

4. The filter cake quick discharge device according to claim 1, characterized in that: The guide hopper has upper and lower openings, the upper opening is larger than the lower opening, and the lower opening is sealed and connected to the screw conveying mechanism.

5. The filter cake quick discharge device according to any one of claims 1 to 4, characterized in that: The screw conveying mechanism comprises a shell and a screw in the shell; a feed inlet is provided at the upper part of the shell, and the feed inlet is sealedly connected to the guide hopper; a discharge port is provided at the bottom of the shell; and the screw is connected to a motor.

6. The filter cake quick discharge device according to claim 5, characterized in that: The discharge port comprises a first discharge port and a second discharge port, which are respectively arranged at the bottom of both ends of the shell.

7. The filter cake quick discharge device according to claim 5, characterized in that: The screw is arranged inclined relative to the horizontal direction.

8. A filter press, wherein the filter press is provided with a filter plate, characterized in that: The filter press comprises the filter cake quick unloading device as claimed in any one of claims 1 to 7, and the guide hopper is arranged at the bottom of the filter plate of the filter press.

9. The filter press according to claim 8, characterized in that An air blowing device is arranged at the filter plate of the filter press.

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