Refractory material screening device

Abstract

The utility model relates to the technical field of refractory material screening, and discloses a refractory material screening device which comprises a plurality of screen frames which are coaxially arranged, a screen mesh is arranged in each screen frame, a material guide pipe is arranged on one side of the screen frame above the screen mesh in a communicating mode, a material discharge pipe capable of being adjusted in the vertical direction is arranged on the material guide pipe, and the material discharge pipe is connected with the screen mesh. A discharging groove is formed in the side, close to the guiding pipe, of the discharging pipe in the vertical direction, a sealing curtain is arranged on the discharging groove, the bottom of the sealing curtain is fixedly connected with the bottom of the discharging groove, and the top end of the sealing curtain is connected with the bottom of the guiding pipe; wherein the sealing curtain is of a foldable structure. According to the screening device, the height of the discharging opening can be flexibly adjusted so as to be matched with containing vessels with different heights, and the use flexibility of the screening device is enhanced; and meanwhile, the stability is high, ordered arrangement of refractory materials can be achieved, the structure is simple, use is convenient, and practicability is high.

Description

Technical Field

[0001] The utility model relates to the technical field of refractory material screening, in particular to a refractory material screening device. Background Art

[0002] Screening is an essential process in the processing of refractory raw materials. The main purpose of screening is to grade the raw materials to ensure that the particle size distribution of the raw materials meets the requirements of subsequent processing and product performance. In the prior art, rotary vibrating screens are mostly used for screening refractory materials. Through the cooperation of multiple screen frames, the corresponding collection of materials of different particle sizes is achieved. The lower barrel of the existing rotary vibrating screen is usually set at a relatively low height. In order to match different receiving vessels, a cloth bag with two ends connected is generally tied and installed at the bottom of the lower barrel. This method has the following problems: First, the cloth bag is usually fixed in length and cannot be adjusted at will after installation. If it extends too much into the receiving vessel, as the refractory material accumulates more and more in the receiving vessel, the opening at the bottom of the cloth bag will be gradually buried, affecting the discharge; secondly, the cloth bag lacks effective support, and it is easy to break the work of the rotary vibrating screen when discharging. The work occurs. A large amount of shaking occurs. When the length of the cloth bag is too short, it is easy for the material to fall outside the receiving vessel, and the flexibility of use is poor; therefore, a refractory screening device with flexible height adjustment and high stability is urgently needed. Utility Model Content

[0003] The utility model aims to provide a refractory material screening device, which can flexibly adjust the height of the discharge port to match containers of different heights and enhance the flexibility of the screening device; at the same time, it has strong stability, can realize the orderly discharge of refractory materials, has a simple structure, is easy to use and has strong practicality.

[0004] The utility model adopts the following technical solutions:

[0005] A refractory material screening device comprises a plurality of coaxially arranged screen frames, each of the screen frames being provided with a screen, a material guide pipe being provided on one side of the screen frame above the screen, a discharge pipe which can be adjusted in the vertical direction being provided on the material guide pipe, a discharge trough being provided in the vertical direction on one side of the discharge pipe close to the material guide pipe, a sealing curtain being provided on the discharge trough, a bottom of the sealing curtain being fixedly connected to a bottom of the discharge trough, and a top of the sealing curtain being connected to a bottom of the material guide pipe; wherein the sealing curtain is a foldable structure, and during operation, the sealing curtain is gradually unfolded or folded as the discharge pipe moves up and down, so as to seal the discharge trough below the material guide pipe.

[0006] Preferably, a flow guide cover is provided at the bottom of the material guiding pipe.

[0007] Preferably, a sliding sleeve is provided at one end of the material guide pipe away from the screen frame, and the end of the material guide pipe extends into the sliding sleeve; and the discharge pipe is slidably provided on the sliding sleeve.

[0008] Preferably, a positioning groove is provided on the discharge pipe in the vertical direction, a positioning rack is provided in the positioning groove, a positioning tooth plate is movably provided at the top end of the sliding sleeve, and the positioning tooth plate is meshed with the positioning rack in an initial state.

[0009] Preferably, a mounting groove is provided at the top end of the sliding sleeve, and the positioning tooth plate is elastically arranged in the mounting groove through a torsion spring.

[0010] Preferably, the material guide pipe is provided with a guide slope with a gradually decreasing height from one end close to the screen frame to the discharge trough.

[0011] Preferably, the sliding sleeve is a U-shaped structure, and its open end is arranged on the side away from the material guide pipe; a sealing groove is horizontally opened on the side wall of the discharge pipe close to the open end of the sliding sleeve, and a sealing plate is slidably arranged in the sealing groove.

[0012] Preferably, sealing blocks are provided at both inner and outer ends of the sealing plate, and the size of the sealing block is larger than the size of the sealing groove.

[0013] Preferably, magnetic blocks are provided on one side opposite to the two sealing blocks and on both inner and outer sides of the sealing groove.

[0014] Preferably, the sealing curtain comprises a plurality of support rods arranged at intervals, each of the support rods being slidably connected to the side wall of the discharge chute; and a flexible and foldable curtain is provided between two adjacent support rods.

[0015] Compared with the prior art, the utility model has the following beneficial effects: the utility model can adjust the discharge pipe in the vertical direction by slidingly setting the discharge pipe at the end of the guide pipe to adjust the discharge height, thereby meeting the use of different containers; at the same time, the discharge pipe can use its own rigid structure to resist the vibration force during the operation of the screening device, and will not cause it to vibrate significantly, thereby ensuring the stability of material discharge. The setting of the sealing curtain in the discharge trough of the discharge pipe can seal the discharge trough below the guide pipe during the adjustment of the height of the discharge pipe, thereby preventing the refractory material from leaking from the discharge trough below the guide pipe during the discharge process, thereby enhancing the practicality of the utility model. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the structure of an embodiment of the present application;

[0017] Figure 2This is a schematic diagram of the structure after the material guide pipe and the material discharge pipe are connected in the embodiment of the present application;

[0018] Figure 3 for Figure 2 A cross-sectional view of

[0019] Figure 4 This is a schematic diagram of the structure of the sealing curtain according to an embodiment of the present application. DETAILED DESCRIPTION

[0020] The following is a clear and complete description of the present invention in conjunction with the accompanying drawings and embodiments:

[0021] like Figures 1 to 4 As shown, a refractory material screening device described in the utility model comprises a plurality of coaxially arranged screen frames 1, each screen frame 1 is provided with a screen, a guide pipe 2 is provided on one side of the screen frame 1 above the screen, a discharge pipe 3 which can be adjusted in the vertical direction is provided on the guide pipe 2, a discharge port is provided at the bottom of the discharge pipe 3, a discharge trough 4 is provided on the side of the discharge pipe 3 close to the guide pipe 2 in the vertical direction, a sealing curtain 5 is provided on the discharge trough 4, the bottom of the sealing curtain 5 is fixedly connected to the bottom of the discharge trough 4, and the top of the sealing curtain 5 is fixedly connected to the bottom of the discharge trough 4. The bottom of the guide pipe 2 is connected to ensure that the guide pipe 2 and the discharge pipe 3 are in a conducting state in real time, ensuring the normal falling of the refractory material; wherein the sealing curtain 5 is a foldable structure, and during operation, as the discharge pipe 3 moves up and down, the sealing curtain 5 can be gradually unfolded or folded, and the discharge groove 4 below the guide pipe 2 is sealed to prevent the refractory material from entering the discharge pipe 3 from the guide pipe 2 and then leaking out from the discharge groove 4, ensuring that the refractory material smoothly enters the receiving container below, providing protection for the material discharge work. The utility model can adjust the height of the discharge port by adjusting the discharge pipe 3 up and down, thereby meeting the use of receiving containers of different heights, with high flexibility, and at the same time ensuring the smooth falling of the refractory material, avoiding the situation where the discharge port is too low and the discharge is not smooth, and the discharge port is too high and the refractory material falls to the outside of the receiving container. In addition, since the discharge pipe 3 is a rigid structure, the stability of the discharge process can be greatly guaranteed, ensuring that the refractory material smoothly enters the receiving container. In addition, in this embodiment, a flow guide cover 6 is arranged at the bottom of the material guide pipe 2. The flow guide cover 6 has a structure with a small upper end and a large lower end, which can limit and guide the refractory material so that it can smoothly enter the receiving container.

[0022] Furthermore, a sliding sleeve 7 is provided at one end of the material guide pipe 2 away from the screen frame 1, and the end of the material guide pipe 2 extends into the sliding sleeve 7, and a sealing curtain 5 is arranged at the bottom of the material guide pipe 2 located in the sliding sleeve 7; the discharge pipe 3 is slidably arranged on the sliding sleeve 7 so as to be adjusted up and down along the sliding sleeve 7; specifically, a positioning groove 8 is provided on the discharge pipe 3 in the vertical direction, a positioning rack 9 is provided in the positioning groove 8, a positioning tooth plate 10 is movably provided at the top of the sliding sleeve 7, and an installation groove is provided at the top of the sliding sleeve 7, and the positioning tooth plate 10 is elastically arranged in the installation groove by a torsion spring so as to automatically reset the positioning tooth plate 10; in the initial state, the positioning tooth plate 10 is meshed with the positioning rack 9 so as to ensure the stability of the discharge pipe 3. When the discharge pipe 3 needs to be adjusted, the positioning tooth plate 10 and the positioning rack 9 are separated to move the discharge pipe 3 up and down. In order to ensure the stability of the up and down movement of the discharge pipe 3, a guide groove can be provided on the discharge pipe 3 on the opposite side of the positioning groove 8, and a guide block slidably connected to the guide groove is provided in the sliding sleeve 7 to provide guidance for the up and down movement of the discharge pipe 3.

[0023] Furthermore, the guide pipe 2 is provided with a guide slope 11 with a gradually decreasing height from one end close to the screen frame 1 to the discharge groove 4, so that the refractory material can smoothly enter the discharge pipe 3. In addition, in the present embodiment, the sleeve 7 is a U-shaped structure, and its open end is provided on the side away from the guide pipe 2; a sealing groove is provided in the horizontal direction on the side wall of the discharge pipe 3 close to the open end of the sleeve 7, and a sealing plate 12 is slidably provided in the sealing groove; the provision of the sealing plate 12 helps to temporarily close the discharge port, so that the screened refractory material is temporarily stored in the discharge pipe 3, so as to facilitate the replacement of the receiving container. Under normal working conditions, the sealing plate 12 is pulled out of the sealing groove to ensure that the discharge pipe 3 is connected up and down. Preferably, sealing blocks 13 are provided at both inner and outer ends of the sealing plate 12, and the size of the sealing block 13 is larger than the size of the sealing groove, so as to block the sealing groove to prevent part of the refractory material from leaking out of the sealing groove. Magnetic blocks 14 are provided on the opposite side of the two sealing blocks 13 and on the inner and outer sides of the sealing groove, so as to utilize the attraction of the magnetic blocks 14 to ensure the stability of the sealing plate 12, ensure the smooth progress of the screening work, avoid the vibration of the sealing plate 12 during the screening process to affect the material discharge, and also avoid the vibration of the sealing plate 12 during the replacement of the receiving container, resulting in poor sealing and leakage of materials.

[0024] Furthermore, in this embodiment, the sealing curtain 5 includes a plurality of support rods 5-1 arranged at intervals in the vertical direction, and each support rod 5-1 is provided with a slide groove 15 on both sides, and the support rods 5-1 are slidably connected to the side wall of the discharge trough 4 through the slide groove 15; a flexible and foldable curtain 5-2 is provided between two adjacent support rods 5-1. The support rod 5-1 at the upper end is connected to the bottom of the guide pipe 2. During operation, as the discharge pipe 3 moves up and down, the curtain can be stacked, stored or unfolded layer by layer along the support rod 5-1 to achieve the sealing operation of the discharge trough 4.

[0025] When the utility model is in use, when it is necessary to adjust the height of the discharge pipe 3, it is only necessary to separate the positioning tooth plate 10 from the positioning rack 9, and then move the discharge pipe 3 up and down. After adjusting to the right position, release the positioning tooth plate 10 to make it re-engage with the positioning rack 9 to complete the positioning of the discharge pipe 3; during the adjustment process, since the sealing curtain 5 is a foldable structure, the sealing curtain 5 will gradually open or contract as the discharge pipe 3 moves up and down to achieve sealing of the discharge trough 4, so as to prevent the refractory material from being discharged from the discharge trough 4 below the guide pipe 2, thereby enhancing the practicality of the utility model.

[0026] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein with equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A refractory material screening device, comprising a plurality of coaxially arranged screen frames, each of which is provided with a screen, characterized in that: A material guide pipe is provided on one side of the screen frame above the screen mesh, a discharge pipe which can be adjusted in the vertical direction is provided on the material guide pipe, a discharge trough is provided in the vertical direction on one side of the discharge pipe close to the material guide pipe, a sealing curtain is provided on the discharge trough, the bottom of the sealing curtain is fixedly connected to the bottom of the discharge trough, and the top of the sealing curtain is connected to the bottom of the material guide pipe; wherein the sealing curtain is a foldable structure, and during operation, the sealing curtain is gradually unfolded or folded as the discharge pipe moves up and down, so as to seal the discharge trough below the material guide pipe.

2. The refractory material screening device according to claim 1, characterized in that: A flow guide cover is arranged at the bottom of the material guiding pipe.

3. The refractory material screening device according to claim 1, characterized in that: A sliding sleeve is arranged at one end of the material guide pipe away from the screen frame, and the end of the material guide pipe extends into the sliding sleeve; the discharge pipe is slidably arranged on the sliding sleeve.

4. The refractory material screening device according to claim 3, characterized in that: A positioning groove is arranged on the discharge pipe in the vertical direction, a positioning rack is arranged in the positioning groove, a positioning tooth plate is movably arranged on the top of the sliding sleeve, and the positioning tooth plate is meshed with the positioning rack in an initial state.

5. The refractory material screening device according to claim 4, characterized in that: The top end of the sliding sleeve is provided with a mounting groove, and the positioning tooth plate is elastically arranged in the mounting groove through a torsion spring.

6. The refractory material screening device according to claim 1, characterized in that: The guide pipe is provided with a guide slope with a gradually decreasing height from one end close to the screen frame to the discharge trough.

7. The refractory material screening device according to claim 3, characterized in that: The sliding sleeve is a U-shaped structure, and its open end is arranged on a side away from the material guide pipe; a sealing groove is horizontally opened on the side wall of the discharge pipe close to the open end of the sliding sleeve, and a sealing plate is slidably arranged in the sealing groove.

8. The refractory material screening device according to claim 7, characterized in that: Sealing blocks are arranged at both inner and outer ends of the sealing plate, and the size of the sealing block is larger than the size of the sealing groove.

9. The refractory material screening device according to claim 8, characterized in that: Magnetic blocks are arranged on one side opposite to the two sealing blocks and on both inner and outer sides of the sealing groove.

10. The refractory material screening device according to claim 1, characterized in that: The sealing curtain comprises a plurality of support rods arranged at intervals, each of the support rods being slidably connected to the side wall of the discharge trough; a flexible and foldable curtain is arranged between two adjacent support rods.

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