Multi-stage screening machine for dry-mixed mortar

Abstract

The utility model relates to a dry-mixed mortar multistage screening machine which comprises a screening machine and a cleaning assembly, the screening machine comprises a top cover, a screen and a frame for fixing the screen, the cleaning assembly is arranged above the screen, and the cleaning assembly is connected with an air pump and a water pump through a three-way valve; the cleaning assembly comprises a self-rotating spray head assembly and an adapter joint, the self-rotating spray head assembly is fixedly arranged on and penetrates through the top cover and the frame, the adapter joint is fixedly arranged on and penetrates through the top cover, the self-rotating spray head assembly on the frame is communicated with the adapter joint, and the adapter joint is fixedly arranged on the top cover. And high-pressure gas or high-pressure liquid sprayed by a spray head of the self-rotating spray head assembly covers the screen. According to the multi-stage screening machine for the dry-mixed mortar, the screen cloth can be cleaned without shutdown, and the service life of the screen cloth is prolonged; when the screen needs to be cleaned thoroughly, the screen can be cleaned without disassembly and can be quickly blow-dried after being cleaned, the time for cleaning the screen is saved, and the procedure of disassembly and cleaning is not needed.

Description

Technical Field

[0001] The utility model relates to the technical field of screening machines, in particular to a multi-stage screening machine for dry mortar. Background Art

[0002] The quality and performance of dry-mix mortar directly affect the strength, durability and aesthetics of building components. Therefore, when making dry-mix mortar, the raw materials need to be prepared strictly according to the formula ratio, and the quality of dry-mix mortar needs to be tested and controlled. Dry-mix mortar is made of sand and gravel and other raw materials. The different particle sizes of sand and gravel will directly affect the quality and performance of dry-mix mortar. In the screening process of sand and gravel, vibrating screening machines are usually used for sand and gravel separation. These devices separate sand and gravel of different particle sizes through different hole sizes to obtain dry-mix mortar raw materials with the same particle size and hygroscopicity.

[0003] In the process of separating sand and gravel, common problems include sticking to the screen and screen clogging, which may affect the quality and output of the finished dry mortar and need to be solved in time during the production process. The problems of sticking to the screen and screen clogging are usually caused by the high water content of the raw materials. Therefore, during the screening of sand and gravel, the sand and gravel clump on the screen. Generally, it is necessary to replace the appropriate screen, dismantle and wash the screen, etc. to solve this problem. However, dismantling and washing the screen or replacing the screen will cause the vibration screening machine to stop working, seriously affecting production efficiency. Utility Model Content

[0004] The purpose of the utility model is to provide a multi-stage screening machine for dry mortar, which is used to solve the above-mentioned problems existing in the prior art.

[0005] In order to solve the above problems, the utility model provides a multi-stage screening machine for dry mortar, including a screening machine and a cleaning assembly, the screening machine including a top cover, a screen and a frame for fixing the screen, the cleaning assembly is arranged above the screen, and the cleaning assembly is connected to an air pump and a water pump through a three-way valve; the cleaning assembly includes a self-rotating nozzle assembly and a adapter joint, the self-rotating nozzle assembly is fixedly arranged on and penetrated through the top cover and the frame, the adapter joint is fixedly arranged on and penetrated through the top cover, the self-rotating nozzle assembly on the frame is connected to the adapter joint, and the high-pressure gas or high-pressure liquid sprayed from the nozzle of the self-rotating nozzle assembly covers the screen.

[0006] The dry mortar multi-stage screening machine provided by the utility model also has the following technical features:

[0007] Furthermore, the self-rotating nozzle assembly and the adapter joint provided on the top cover are arranged at intervals, and the top ends of the two are connected to the three-way valve; the self-rotating nozzle assembly provided on the frame is arranged directly below the adapter joint, and the two are connected by a hose.

[0008] Furthermore, the self-rotating nozzle assembly includes a fixed flange, a rotating base, a limiting cover, a rotor tube and an extension tube, the fixed flange is fixedly connected to the top cover or the frame, the rotating base is fixedly arranged on and penetrates the fixed flange, the limiting cover limits one end of the rotor tube in the inner cavity of the rotating base, the other end of the rotor tube extends out of the rotating base and is fixedly connected to the extension tube, and the nozzle is fixedly arranged on the extension tube.

[0009] Furthermore, the extension tube is perpendicular to the rotor tube, and the extension tube is symmetrically arranged on both sides of the rotor tube.

[0010] Furthermore, a plurality of the nozzles are provided, and the nozzles on both sides of the extension tube are centrally symmetrically arranged, and an angle between the nozzles and the horizontal plane is 45 degrees to 75 degrees.

[0011] Furthermore, the nozzle sprays out conical gas or liquid.

[0012] Furthermore, the length of the extension tube is smaller than the distance between any two adjacent self-rotating spray head assemblies on the same horizontal plane.

[0013] Furthermore, the diameter of the rotor tube at one end in the inner cavity of the rotating base is larger than that at the other end.

[0014] Furthermore, the rotor tube is rotatably connected to the rotating base via a bearing at one end of the inner cavity of the rotating base.

[0015] Furthermore, one end of the limiting cover is fixedly connected to the inner cavity of the rotating base via a thread, and the other end of the limiting cover is connected to the three-way valve or the hose.

[0016] The utility model has the following beneficial effects: the multi-stage screening machine for dry mortar disclosed in the present application can, when the screening machine is in operation, spray the high-pressure gas generated by the air pump to each layer of the screen and cover the screen surface through the self-rotating nozzle assembly, so as to achieve the purpose of cleaning the screen without stopping the machine, prevent the screen from agglomerating and sticking to the screen and causing the screen to be blocked due to moisture in the sand and gravel, and thus extend the service life of the screen; when the screen needs to be thoroughly cleaned after a long period of operation, the screening machine is stopped, and a high-pressure water flow is first sprayed from the self-rotating nozzle assembly to cover each layer of the screen, and then the high-pressure gas is sprayed, so as to achieve the purpose of quickly drying the screen after cleaning, saving the time for cleaning the screen, and no disassembly and cleaning process is required. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0018] Figure 2It is a schematic diagram of the hidden top cover of the utility model;

[0019] Figure 3 for Figure 1 The schematic cross-section diagram along line AA;

[0020] Figure 4 for Figure 3 Detailed view of point B in the middle;

[0021] Figure 5 It is a schematic diagram of the structure of the self-rotating nozzle assembly of the utility model. DETAILED DESCRIPTION

[0022] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments. It should be noted that the embodiments and features in the embodiments of the present invention can be combined with each other without conflict.

[0023] like Figures 1 to 5 In the embodiment of the dry mortar multi-stage screening machine of the utility model shown, the dry mortar multi-stage screening machine includes a screening machine 10 and a cleaning assembly 20, and the screening machine 10 includes a top cover 11, a screen 12 and a frame 13 for fixing the screen 12; the screening machine 10 in the figure adopts a linear screening machine, but the screening machine 10 on which the cleaning assembly 20 acts in this application is not limited to a linear screening machine, and can also act on other types of vibrating screening machines; the specific structure of the linear screening machine is the prior art and will not be repeated here; two parts of parallel screens 12 are distributed on each layer of the frame 13 on the screening machine 10 in the figure, and the screening machine 10 in the figure includes two layers of frames 13 and screens 12. The cleaning assembly 20 includes a self-rotating nozzle assembly 21 and an adapter joint 22, the self-rotating nozzle assembly 21 is fixedly arranged on and penetrates the top cover 11 and the frame 13, and the adapter joint 22 is fixedly arranged on and penetrates the top cover 11. The cleaning assembly 20 is arranged above the screen 12, and the rotating nozzle assembly 21 corresponding to the top screen 12 is arranged on the top cover 11, and the rotating nozzle assembly 21 corresponding to the second screen 12 is arranged on the frame 13 of the first screen 12, and the rotating nozzle assembly 21 corresponding to the second screen 12 is connected to the air source or water source through the adapter 22 arranged on the top cover 11, that is, the self-rotating nozzle assembly on the frame is connected to the adapter. The cleaning assembly 20 on the top cover 11 is connected to an air pump and a water pump through a three-way valve, and the high-pressure gas or high-pressure liquid sprayed from the nozzle 216 of the self-rotating nozzle assembly 21 covers the screen 12 below it.

[0024] The dry mortar multi-stage screening machine disclosed in the present application can, when the screening machine is in operation, spray the high-pressure gas generated by the air pump to each layer of the screen and cover the screen surface through the self-rotating nozzle assembly, so as to achieve the purpose of cleaning the screen without stopping the machine, prevent the screen from agglomerating and sticking to the screen and causing clogging due to moisture in the sand and gravel, and thus extend the service life of the screen; when the screen needs to be thoroughly cleaned after a long period of operation, the screening machine is stopped, and a high-pressure water flow is first sprayed from the self-rotating nozzle assembly to cover each layer of the screen, and then high-pressure gas is sprayed, so as to achieve the purpose of quickly drying the screen after cleaning, saving time for cleaning the screen, and no disassembly and cleaning process is required.

[0025] In one embodiment of the present application, preferably, Figure 3 , Figure 4 As shown, the self-rotating nozzle assembly 21 and the adapter 22 provided on the top cover 11 are arranged at intervals to cover the screen to the greatest extent, and the tops of the two are connected to a three-way valve to connect the air pump or water pump. The self-rotating nozzle assembly 21 provided on the frame 13 is arranged directly below the adapter 22 to facilitate the connection between the two, and the two are connected by a hose. Using the hose as a connector can prevent the screening machine from damaging the connector when vibrating.

[0026] In one embodiment of the present application, preferably, Figure 4 , Figure 5 As shown, the self-rotating nozzle assembly 21 includes a fixed flange 211, a rotating base 212, a limiting cover 213, a rotor tube 214 and an extension tube 215. The fixed flange 211 is fixedly connected to the top cover 11 or the frame 13, and the fixed flange 211 is penetrated through the top cover 11 or the frame 13. The rotating base 212 is fixedly arranged on and penetrated through the fixed flange 211, and can be specifically fixedly connected through the external thread on the rotating base 212 and the internal thread on the fixed flange 211; the limiting cover 213 fixes the rotor tube 214 to the rotor tube 215. 4 is limited in the inner cavity of the rotating base 212, specifically, the limiting cover 213 limits the top end of the rotor tube 214, the limiting cover 213 is also at the top end of the rotating base 212, the other end, that is, the bottom end of the rotor tube 214 extends out of the rotating base 212 and is fixedly connected to the extension tube 215, and the nozzle 216 is fixedly arranged on the extension tube 215; one end of the limiting cover 213 is fixedly connected to the inner cavity of the rotating base 212 by a thread, and the other end of the limiting cover 213 is connected to a three-way valve or a hose.

[0027] In one embodiment of the present application, preferably, Figure 4 , Figure 5As shown, the extension tube 215 is perpendicular to the rotor tube 214, and the extension tube 215 is symmetrically arranged on both sides of the rotor tube 214; a plurality of nozzles 216 are arranged, and the nozzles 216 on both sides of the extension tube 215 are centrally symmetrically arranged, that is, every two centrally symmetrical nozzles 216 form a group, and the nozzles 216 can be arranged in one group or more; the nozzles 216 form an angle of 45 to 75 degrees with the horizontal plane, and the nozzles in the figure are at an angle of 45 degrees. The angle of 45 to 75 degrees is set, on the one hand, each centrally symmetrical group of nozzles 216 can drive the rotor tube 214 to rotate when spraying air or water, and on the other hand, the high-pressure gas or high-pressure liquid sprayed by the nozzles 216 can cover the screen 12 as fully as possible to play a cleaning role; for example: if the nozzle 216 is perpendicular to the horizontal plane and is greater than 75 degrees, it cannot rotate, and if it is less than 45 degrees, the high-pressure gas or high-pressure liquid sprayed by the nozzle 216 will stay in the air for a long time and cannot play a role in cleaning the screen. The nozzle 216 sprays conical gas or liquid, that is, umbrella-shaped gas or liquid, so that the nozzle 216 can cover the screen 12 as completely as possible during the rotation of the rotor tube 214 .

[0028] In one embodiment of the present application, preferably, the length of the extension tube 215 is smaller than the distance between any two adjacent self-rotating spray head assemblies 21 on the same horizontal plane, so as to prevent the extension tube 215 from interfering with other related components when rotating.

[0029] In one embodiment of the present application, preferably, Figure 4 As shown, the diameter of the rotor tube 214 at one end of the inner cavity of the rotating base 212 is larger than that at the other end, that is, the rotor tube 214 is in the shape of a bolt with a central through hole, and the bolt-shaped head at one end of the inner cavity of the rotating base 212 is rotatably connected to the rotating base 212 through a bearing; the provision of the rotating base 212 can facilitate the assembly of the self-rotating nozzle assembly 21, and also facilitate the provision of bearings.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the utility model, rather than to limit it. Although the utility model has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or make equivalent replacements for some of the technical features therein. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the various embodiments of the utility model.

Claims

1. A multi-stage screening machine for dry mortar, characterized in that: The invention comprises a screening machine (10) and a cleaning component (20), wherein the screening machine (10) comprises a top cover (11), a screen (12) and a frame (13) for fixing the screen (12), wherein the cleaning component (20) is arranged above the screen (12), and the cleaning component (20) is connected to an air pump and a water pump via a three-way valve; the cleaning component (20) comprises a self-rotating spray head component (21) and an adapter joint (22), wherein the self-rotating spray head component (21) is fixedly arranged on and penetrates the top cover (11) and the frame (13), and the adapter joint (22) is fixedly arranged on and penetrates the top cover (11), and the self-rotating spray head component (21) on the frame (13) is connected to the adapter joint (22), and the high-pressure gas or high-pressure liquid sprayed by the spray head (216) of the self-rotating spray head component (21) covers the screen (12).

2. The dry mortar multi-stage screening machine according to claim 1, characterized in that: The self-rotating spray head assembly (21) and the adapter joint (22) provided on the top cover (11) are arranged at an interval, and the top ends of the two are connected to the three-way valve; the self-rotating spray head assembly (21) provided on the frame (13) is arranged directly below the adapter joint (22), and the two are connected via a hose.

3. The dry mortar multi-stage screening machine according to claim 2, characterized in that: The self-rotating spray head assembly (21) comprises a fixed flange (211), a rotating base (212), a limiting cover (213), a rotor tube (214) and an extension tube (215); the fixed flange (211) is fixedly connected to the top cover (11) or the frame (13); the rotating base (212) is fixedly arranged on and penetrates the fixed flange (211); the limiting cover (213) limits one end of the rotor tube (214) in the inner cavity of the rotating base (212); the other end of the rotor tube (214) extends out of the rotating base (212) and is fixedly connected to the extension tube (215); and the spray head (216) is fixedly arranged on the extension tube (215).

4. The dry mortar multi-stage screening machine according to claim 3, characterized in that: The extension tube (215) is perpendicular to the rotor tube (214), and the extension tube (215) is symmetrically arranged on both sides of the rotor tube (214).

5. The multi-stage screening machine for dry mortar according to claim 4, characterized in that: A plurality of the nozzles (216) are provided, and the nozzles (216) on both sides of the extension tube (215) are centrally symmetrically arranged, and an angle between the nozzles (216) and a horizontal plane is 45 degrees to 75 degrees.

6. The multi-stage screening machine for dry mortar according to claim 5, characterized in that: The nozzle (216) sprays gas or liquid in a cone.

7. The multi-stage screening machine for dry mortar according to claim 4, characterized in that: The length of the extension tube (215) is less than the distance between any two adjacent self-rotating spray head assemblies (21) located on the same horizontal plane.

8. The multi-stage screening machine for dry mortar according to claim 3, characterized in that: The diameter of one end of the rotor tube (214) in the inner cavity of the rotating base (212) is larger than that of the other end.

9. The multi-stage screening machine for dry mortar according to claim 8, characterized in that: The rotor tube (214) is rotatably connected to the rotating base (212) via a bearing at one end of the inner cavity of the rotating base (212).

10. The multi-stage screening machine for dry mortar according to claim 3, characterized in that: One end of the limiting cover (213) is fixedly connected to the inner cavity of the rotating base (212) via a thread, and the other end of the limiting cover (213) is connected to the three-way valve or the hose.

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