Screening device

Abstract

The utility model provides a screening device which solves the technical problems that when a single-layer screen is used for screening ammonium dihydrogen phosphate at present, the screening effect is poor, screening holes are easily blocked by materials, powder is easily carried and the like. Comprising a shell provided with a feeding pipe, a first discharging pipe and a second discharging pipe; the screening assembly is arranged in the shell and comprises a plurality of layers of screens which are arranged at intervals in the vertical direction, and each screen is connected with a corresponding vibration motor; the material distribution assembly is arranged in the shell and comprises a plurality of material distribution pipes which are uniformly arranged above the screen mesh, and the plurality of material distribution pipes are respectively connected with corresponding vibration motors; the air blowing assembly is arranged in the shell and comprises a plurality of air blowing pipes which are uniformly arranged above the screen and form an angle with the screen; and the dust collection unit is provided with a plurality of dust extraction pipes close to the shell. The control unit is electrically connected with the vibration motor and the air blowing pipe, the screening effect is improved through multi-layer screening, and ammonium dihydrogen phosphate is prevented from blocking the screen through vibration and striking.

Description

Technical Field

[0001] The utility model relates to the technical field of screening devices, and more specifically, to a screening device. Background Art

[0002] Ammonium dihydrogen phosphate, also known as monoammonium phosphate, is an inorganic compound with the chemical formula NH4H2PO4. It is a white crystalline powder, slightly soluble in ethanol and insoluble in acetone. It is mainly used as a fire retardant for wood, fabrics, and paper, and can also be used as a fertilizer, bread improver, and food additive.

[0003] During the traditional manufacturing process of ammonium dihydrogen phosphate, screening is required to meet the particle size control requirements of downstream customers. The process sieve is usually a single-layer sieve, with a relatively simple structure, poor screening effect, and prone to problems such as material clogging of the sieve holes and powder entrainment, which affect the product quality. Summary of the Utility Model

[0004] The purpose of the utility model is to provide a screening device to solve the technical problems of poor screening effect, easy material clogging of the sieve holes, and powder entrainment when using a single-layer sieve for screening ammonium dihydrogen phosphate.

[0005] The embodiments of the utility model are realized through the following technical solutions:

[0006] A screening device includes a housing, a screening component, a cloth-feeding component, a blowing component, a dust collection unit, and a control unit;

[0007] The housing is provided with a feed pipe, a first discharge pipe, and a second discharge pipe;

[0008] The screening component is arranged inside the housing and includes multiple layers of sieves arranged at intervals in the vertical direction, and each sieve is respectively connected to a corresponding vibration motor;

[0009] The cloth-feeding component is arranged inside the housing and includes multiple cloth-feeding pipes evenly arranged above the sieves, and each of the multiple cloth-feeding pipes is respectively connected to a corresponding vibration motor;

[0010] The blowing component is arranged inside the housing and includes multiple blowing pipes evenly arranged above the sieves and arranged at an angle to the sieves;

[0011] The dust collection unit is provided with multiple dust extraction pipes close to the housing.

[0012] The control unit is electrically connected to the vibration motor and the blowing pipe.

[0013] In some embodiments, the sieve is connected to the outer shell through a sealing rubber strip.

[0014] In some embodiments, above the screen, there are also provided a plurality of high-frequency striking shafts perpendicular to the screen and a first driving member connecting the high-frequency striking shafts, and the first driving member drives the high-frequency striking shafts to reciprocate in a direction perpendicular to the extending direction of the screen.

[0015] In some embodiments, the high-frequency striking shaft includes a body and a buffer layer wrapped around the body.

[0016] In some embodiments, the screen is a 304 stainless steel long-strip woven mesh.

[0017] In some embodiments, the housing is provided with support legs, and the support legs are provided with shock pads.

[0018] In some embodiments, the control unit is electrically connected to an alarm.

[0019] The technical solution of the embodiment of the present utility model has at least the following advantages and beneficial effects:

[0020] (1) The present utility model is provided with a vibration motor to drive the screen to vibrate, preventing ammonium dihydrogen phosphate from clogging the screen.

[0021] (2) The present utility model is provided with a vibration motor to drive the cloth pipe to vibrate, promoting the fall of ammonium dihydrogen phosphate from the cloth pipe and preventing ammonium dihydrogen phosphate from clogging the screen.

[0022] (3) The present utility model is provided with a plurality of high-frequency striking shafts and a first driving member connecting the high-frequency striking shafts. The first driving member drives the high-frequency striking shafts to reciprocate in a direction perpendicular to the extending direction of the screen to strike the screen, assisting the screen to vibrate, promoting the screening of ammonium dihydrogen phosphate, and preventing ammonium dihydrogen phosphate from clogging the screen.

[0023] (4) The dust collection unit of the present utility model is provided with a plurality of dust extraction pipes close to the housing to control the on-site environment, reduce dust emission, improve the production on-site environment, and meet the environmental protection standards.

[0024] (5) The present utility model is provided with a blowing assembly, including a plurality of blow pipes uniformly arranged above the screen and arranged at an angle with the screen, to promote the screening of ammonium dihydrogen phosphate and prevent ammonium dihydrogen phosphate from clogging the screen.

[0025] (6) The present utility model is reasonably designed, has a simple structure, and good practicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings required for use in the embodiments will be briefly introduced below. It should be understood that the following accompanying drawings only show some embodiments of the present invention and should not be regarded as limiting the scope. For those of ordinary skill in the art, other related accompanying drawings can be obtained based on these drawings without creative efforts.

[0027] Figure 1 The front view of the screening device provided by the embodiment of the present invention;

[0028] Figure 2 The side view of the screening device provided by the embodiment of the present invention;

[0029] Figure 3 The top view of the screening device provided by the embodiment of the present invention;

[0030] Figure 4 The schematic diagram of the relative positions among the high-frequency hitting shaft, the first driving member and the screen of the screening device provided by the embodiment of the present invention.

[0031] Icon:

[0032] 100, housing;

[0033] 210, screen; 220, vibration motor;

[0034] 310, cloth pipe;

[0035] 400, support leg;

[0036] 510, high-frequency hitting shaft; 520, first driving member. Detailed implementation manners

[0037] To make the objectives, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are some, but not all, of the embodiments of the present invention. Usually, the components of the embodiments of the present invention described and illustrated in the accompanying drawings here can be arranged and designed in various different configurations.

[0038] Embodiment

[0039] An embodiment of the present application provides a screening device to improve the screening effect.

[0040] Please refer to Figures 1 to 3 , the screening device provided by the embodiment of the present application includes a housing 100, a screening assembly, a cloth assembly, a blowing assembly, a dust collection unit and a control unit;

[0041] The housing 100 is provided with a feed pipe, a first discharge pipe and a second discharge pipe to provide a screening space for ammonium dihydrogen phosphate. In some embodiments, the housing 100 is connected to a silo through the feed pipe;

[0042] The screening assembly is disposed inside the housing 100 and includes multiple layers of screening nets 210 spaced apart in the vertical direction. Each screening net 210 is respectively connected to a corresponding vibration motor 220. In some embodiments, the screening net 210 is inclined. In some embodiments, the height of one end of the screening net 210 close to the feed port is higher than the height of the end close to the discharge port, so that ammonium dihydrogen phosphate moves downward. In some embodiments, the vibration motor 220 drives the screening net 210 to vibrate to prevent ammonium dihydrogen phosphate from blocking the screening net 210;

[0043] The cloth-feeding assembly is disposed inside the housing 100 and includes multiple cloth-feeding pipes 310 evenly arranged above the screening net 210. Each of the multiple cloth-feeding pipes 310 is respectively connected to a corresponding vibration motor 220. The cloth-feeding pipes 310 are connected to a feeding silo to evenly distribute the material above the screening net 210, so that the area of the screening net 210 can be fully utilized, the impact of the material on the screening net 210 is reduced, and the service life of the screening net 210 is prolonged. In some embodiments, the vibration motor 220 drives the cloth-feeding pipes 310 to vibrate to promote the falling of ammonium dihydrogen phosphate from the cloth-feeding pipes 310. In some embodiments, a filter screen is provided at the nozzle of the cloth-feeding pipe 310;

[0044] The air-blowing assembly is disposed inside the housing 100 and includes multiple blowing pipes evenly arranged above the screening net 210 and arranged at an angle to the screening net 210 to promote the screening of ammonium dihydrogen phosphate and prevent ammonium dihydrogen phosphate from blocking the screening net 210. In some embodiments, the blowing pipes are connected to an air source;

[0045] The dust collection unit is provided with multiple dust extraction pipes close to the housing 100 to control the on-site environment and reduce dust. In some embodiments, the outer shell is provided with a dust extraction port, and the dust extraction port is connected to the dust collection unit, improving the production on-site environment and meeting the environmental protection standards.

[0046] The control unit is electrically connected to the vibration motor 220 and the blowing pipes to control the vibration of the vibration motor 220, thereby controlling the screening rate of ammonium dihydrogen phosphate.

[0047] In some embodiments, the front end and the rear end of the screening net 210 along the extending direction of the outer shell are connected to the outer shell through hooks, which improves the tension of the screening net 210, makes it convenient and fast to replace the screening net 210, saves time, reduces the labor intensity of workers, and has a short downtime. In some embodiments, the hooks are 304 stainless steel hooks. In some embodiments, the screening net has two layers.

[0048] In some embodiments, the screen 210 is connected to the outer shell by a sealing strip to improve the sealing performance and prevent the occurrence of material leakage. In some embodiments, the left and right sides of the screen 210 along the extending direction of the outer shell are connected by a sealing strip to improve the sealing performance and prevent the occurrence of material leakage.

[0049] In some embodiments, above the screen 210, there are also a plurality of high-frequency striking shafts 510 arranged perpendicular to the screen 210 and a first driving member 520 connected to the high-frequency striking shafts. The first driving member 520 drives the high-frequency striking shafts 510 to reciprocate along the direction perpendicular to the extending direction of the screen 210 to strike the screen 210 and assist the screen 210 to vibrate. In some embodiments, the high-frequency striking shafts 510 are rod members perpendicular to the extending direction of the screen 210.

[0050] Please refer to Figure 4 , in some embodiments, the high-frequency striking shaft 510 includes a main body and a buffer layer wrapped around the main body. In some embodiments, a buffer layer is provided at the end of the high-frequency striking shaft 510. In some embodiments, a high-temperature and wear-resistant rubber strip is installed at the contact part between the high-frequency striking shaft 510 and the screen 210 to prevent metal from contacting the screen 210 and extend the service life of the screen 210. The rubber strip has a long service life and is quick to replace.

[0051] In some embodiments, the housing 100 is provided with a manhole door for easy maintenance and cleaning. In some embodiments, the manhole door is a 304 stainless steel door.

[0052] In some embodiments, the screen 210 is a 304 stainless steel long strip woven mesh with a high screening rate and is not easily blocked.

[0053] In some embodiments, the housing 100 is provided with support legs 400, and the support legs 400 are provided with shock pads.

[0054] In some embodiments, the control unit is electrically connected to an alarm to give an alarm in a timely manner. In some embodiments, the alarm is an audible and visual alarm.

[0055] In some embodiments, a flow meter is provided at the discharge port. The flow meter is electrically connected to the central processing unit, and the central processing unit is electrically connected to the control unit. The central processing unit processes and identifies the monitoring data of the flow meter in real time. When it is identified that the discharge flow rate of ammonium dihydrogen phosphate decreases significantly (decreases by W% or more), the central processing unit controls the control unit, and then controls the alarm to give an alarm operation in a timely manner through the control unit.

[0056] The following is a detailed description of the usage process of the screening device of the present application:

[0057] During use, the material pipe 310 of the cloth component continuously feeds materials above the screen 210. The vibration motor 220 assists the ammonium dihydrogen phosphate to fall from the material pipe 310 to the screen 210, and the vibration motor 220 assists the screen 210 to vibrate. The first driving member 520 drives the high-frequency hitting shaft 510 to reciprocate in a direction perpendicular to the extension direction of the screen 210 to strike the screen 210 and assist the screen 210 to vibrate, thereby assisting the ammonium dihydrogen phosphate to fall layer by layer from the screen 210. After being screened by multiple layers of screens 210, the screened ammonium dihydrogen phosphate falls to the bottom of the housing for collection. During the working process, the dust collection unit continuously works to control the on-site environment. At the same time, when the central processing unit recognizes that the discharge flow rate of ammonium dihydrogen phosphate decreases significantly (decreases by W% or more), the central processing unit controls the control unit, and then the control unit controls the alarm to give an alarm operation in time.

[0058] The screening device of the present application has at least the following advantages:

[0059] (1) The present utility model is provided with a vibration motor to drive the screen to vibrate and prevent the ammonium dihydrogen phosphate from blocking the screen.

[0060] (2) The present utility model is provided with a vibration motor to drive the material pipe to vibrate, promote the ammonium dihydrogen phosphate to fall from the material pipe, and prevent the ammonium dihydrogen phosphate from blocking the screen.

[0061] (3) The present utility model is provided with a plurality of high-frequency hitting shafts and a first driving member connecting the high-frequency hitting shafts. The first driving member drives the high-frequency hitting shafts to reciprocate in a direction perpendicular to the extension direction of the screen to strike the screen and assist the screen to vibrate, promote the screening of ammonium dihydrogen phosphate, and prevent the ammonium dihydrogen phosphate from blocking the screen.

[0062] (4) The dust collection unit of the present utility model is provided with a plurality of dust extraction pipes close to the housing to control the on-site environment, reduce dust emission, improve the production on-site environment, and meet the environmental protection standards.

[0063] (5) The present utility model is provided with a blowing component, including a plurality of blowing pipes evenly arranged above the screen and arranged at an angle with the screen, to promote the screening of ammonium dihydrogen phosphate and prevent the ammonium dihydrogen phosphate from blocking the screen.

[0064] (6) The present utility model is reasonably designed, has a simple structure, and good practicability.

[0065] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A screening device, characterized in that, Comprising: A housing, provided with a feed pipe, a first discharge pipe and a second discharge pipe; A screening assembly, disposed within the housing, including multiple layers of screening nets spaced apart in the vertical direction, each of the screening nets being respectively connected to a corresponding vibration motor; A cloth-feeding assembly, disposed within the housing, including multiple cloth-feeding pipes uniformly disposed above the screening nets, each of the multiple cloth-feeding pipes being respectively connected to a corresponding vibration motor; A blowing assembly, disposed within the housing, including multiple blowing pipes uniformly disposed above the screening nets and arranged at an angle to the screening nets; A dust collection unit, provided with multiple dust extraction pipes close to the housing; A control unit, electrically connected to the vibration motor and the blowing pipe.

2. The screening device according to claim 1, wherein The screening net is connected to the housing through a sealing rubber strip.

3. The screening device according to claim 1, characterized in that, Above the screening net, there further include multiple high-frequency striking shafts perpendicular to the screening net and a first driving member connecting the high-frequency striking shafts, the first driving member driving the high-frequency striking shafts to reciprocate along the extending direction perpendicular to the screening net.

4. The screening device according to claim 3, characterized in that, The high-frequency striking shaft includes a body and a buffer layer wrapped around the body.

5. The screening device according to any one of claims 1 to 4, characterized in that The screening net is a 304 stainless steel long-strip woven net.

6. The screening device according to any one of claims 1 to 4, characterized in that The housing is provided with support legs, and the support legs are provided with shock-absorbing pads.

7. The screening device according to any one of claims 1 to 4, characterized in that The control unit is electrically connected to an alarm.

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