Discharging dust removal mechanism of ultrafine grinder

Abstract

The utility model discloses a discharging dust removal mechanism of an ultrafine grinder. Comprising a shell, a longitudinal partition plate dividing the upper space of the shell into a flocculus removing cavity and a filtering cavity, an impurity discharging opening formed in the bottom of the flocculus removing cavity and the bottom of the filtering cavity, an ash vehicle installed at the lower end of the impurity discharging opening through two limiting rails on the two sides, and a rotating brush inserted from the upper end of the flocculus removing cavity. The plurality of filter bags are suspended in the filter cavity through a sealed filter bag mounting pore plate and are arranged in an array, the plurality of cage frames are arranged in the plurality of filter bags, and the compressed air pipes are arranged at the upper end of the filter bag mounting pore plate and correspond to the plurality of filter bag openings. According to the discharging dust removal mechanism of the ultrafine grinder, floccules in air flow can be wound on the rotating brush, the situation that the floccules drift along with the air flow and adhere to the surface of the filter bag, so that the local or all filtering functions of the filter bag lose efficacy is avoided, and the filtering effect is guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of dust removal devices, in particular to a discharge dust removal mechanism of an ultra-fine pulverizer. Background Art

[0002] Pulverizers are widely used in chemical, pharmaceutical, pesticide, mineral, metallurgy, abrasive, ceramic and other industries. When used, they form a complete pulverizing system with cyclone separators, dust collectors and induced draft fans. After the materials are pulverized in the pulverizer, the strong centrifugal force generated by the high-speed rotating grading turbine separates the coarse and fine materials. The fine particles that meet the particle size requirements enter the cyclone separator and bag dust collector for collection, and the coarse particles fall into the pulverizing area for further pulverization.

[0003] After the dust-laden gas enters the bag filter, the dust with large particles and high specific gravity settles down due to gravity and falls into the ash hopper. When the gas containing finer dust passes through the filter bag, the dust is retained, so that the gas is purified. However, during the operation of the bag filter, the light flocs in the dust will drift with the airflow and adhere to the surface of the filter bag. Due to the large volume and light weight of the flocs, it is difficult to remove them by backblowing or vibration. Moreover, the flocs adhering to the surface of the filter bag will accumulate more and more, making the dust particles accumulated inside it also increase, thereby making the filter bag partially or completely ineffective in filtering function, affecting the dust removal effect; furthermore, when the effective filtering area is reduced, the filter bag will bend and deform under the blowing force of the gas, thereby reducing the filtering channel inside the filter bag and blocking the filtering outlet, which not only shortens the service life of the filter bag, but also greatly reduces the dust removal effect and efficiency. Summary of the invention

[0004] In view of this, the utility model provides a discharge dust removal mechanism for an ultrafine pulverizer, which has the characteristics of good dust removal effect, high dust removal efficiency and long service life of the filter bag.

[0005] The utility model solves the above problems through the following technical means:

[0006] The utility model discloses a discharge dust removal mechanism for an ultrafine pulverizer, comprising a shell, a longitudinal partition plate which divides the upper space of the shell into a deflocculation chamber and a filter chamber, a debris discharge port arranged at the bottom of the deflocculation chamber and the filter chamber, a ash cart which is installed at the lower end of the debris discharge port through two limiting tracks on both sides, a rotating brush which is inserted from the upper end of the deflocculation chamber, a plurality of array-arranged filter bags which are suspended in the filter chamber through a sealed filter bag mounting hole plate, a plurality of cages which are arranged in the plurality of filter bags, and a compressed air pipe which is arranged at the upper end of the filter bag mounting hole plate and corresponds to the plurality of filter bag ports.

[0007] As a further improvement of the above technical solution, the cage frame includes a plurality of vertical rods arranged in a ring, a plurality of hoops connected to the horizontal cross sections of the plurality of ring-shaped vertical rods, a shrinking ring connected to the bottom of the plurality of vertical rods, and a clamping ring connected to the top of the plurality of vertical rods for fixing to the filter bag mounting hole plate.

[0008] As a further improvement of the above technical solution, the clamping ring includes an upper cover ring with a larger radius for overlapping the upper end of the filter bag mounting hole plate and a lower inner ring with a smaller radius for sleeved on the inner side of the filter bag.

[0009] Preferably, a sealing ring is provided on the outer side of the inner connecting ring, and an annular groove is provided on the filter bag mounting hole plate on the outer side of the corresponding filter bag.

[0010] Preferably, the snap-fitting ring portions of two adjacent cage frames in the same row are connected via a detachable connecting plate.

[0011] Preferably, the ash cart is provided with a handle.

[0012] Preferably, the bottom of the longitudinal partition plate on the flocculation removal chamber side has an outwardly inclined slope.

[0013] It can be seen from the above technical solution that the utility model has the following beneficial effects:

[0014] The utility model discloses a discharge dust removal mechanism for an ultrafine pulverizer. The dust-containing gas first enters the deflocculation chamber from the air inlet of the dust removal mechanism. In the process of the dust-containing gas flow flowing downward, the rotating brush performs preliminary impurity removal on it, and winds the floccules in the gas flow around the rotating brush, so as to avoid the situation that the floccules drift with the gas flow and adhere to the surface of the filter bag, thereby causing partial or complete failure of the filtering function of the filter bag, thereby ensuring the filtering effect. Secondly, a cage is arranged inside the filter bag, which can play an internal supporting role for the filter bag, thereby avoiding the situation that the filter bag is bent and deformed by the blowing force of the gas, thereby reducing the filtering channel inside the filter bag and blocking the filtering outlet, thereby extending the service life of the filter bag and improving the dust removal effect and efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a structural schematic diagram of the discharge dust removal mechanism of the ultrafine pulverizer of the utility model;

[0016] Figure 2 It is a structural schematic diagram of the cage frame of the discharge dust removal mechanism of the ultra-fine pulverizer of the utility model;

[0017] Figure 3 It is an installation plan view of the cage frame of the discharge dust removal mechanism of the ultra-fine pulverizer of the utility model.

[0018] Figure 4It is a schematic diagram of the structure of the clamping ring of the cage.

[0019] like Figure 1-Figure 4 , shell -1, deflocculation chamber -2, filter chamber -3, longitudinal partition -4, impurity discharge port -5, limiting track -6, ash car -7, rotating brush -8, filter bag installation hole plate -9, filter bag -10, cage -11, vertical rod -111, hoop -112, shrinking ring -113, clamping ring -114, cover ring -115, inner ring -116, sealing ring -117, contact plate -12, compressed air pipe -13, air inlet -14, exhaust port -15. DETAILED DESCRIPTION

[0020] In the description of the present invention, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating directions or positional relationships, are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present invention.

[0021] The terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "plurality" means two or more.

[0022] The utility model will be described in detail below with reference to the accompanying drawings. Figure 1 As shown: the discharge dust removal mechanism of the ultrafine pulverizer described in this embodiment includes a shell 1, a longitudinal partition 4 that divides the upper space of the shell 1 into a deflocculation chamber 2 and a filter chamber 3, a debris discharge port 5 arranged at the bottom of the deflocculation chamber 2 and the filter chamber 3, an ash cart 7 installed at the lower end of the debris discharge port 5 through two limiting rails 6 on both sides, a rotating brush 8 inserted from the upper end of the deflocculation chamber 2, a plurality of array-arranged filter bags 10 suspended in the filter chamber 3 through a sealed filter bag mounting hole plate 9, a plurality of cage frames 11 arranged in the plurality of filter bags 10, and a compressed air pipe 13 arranged at the upper end of the filter bag mounting hole plate 9 corresponding to the plurality of filter bag 10 ports.

[0023] In the discharge dust removal mechanism of the ultrafine pulverizer described in this embodiment, the dust-containing gas first enters the flocculation removal chamber 2 from the air inlet 14 of the dust removal mechanism, and the rotating brush 8 performs preliminary impurity removal on the dust-containing airflow during its downward flow, and winds the flocs in the airflow around the rotating brush 8, thereby preventing the flocs from drifting with the airflow and adhering to the surface of the filter bag 10, thereby causing partial or complete failure of the filtering function of the filter bag 10, thereby ensuring the filtering effect; secondly, a cage frame 11 is provided inside the filter bag 10, which can play an internal support role for the filter bag 10, thereby preventing the filter bag 10 from bending and deforming under the blowing force of the gas, thereby reducing the filtering channel inside the filter bag 10 and blocking the filtering outlet, thereby extending the service life of the filter bag 10 and improving the dust removal effect and efficiency.

[0024] As a further improvement of the above technical solution, Figure 2-Figure 3 As shown, the cage 11 includes a plurality of vertical rods 111 arranged in a ring, a plurality of hoops 112 connected to the horizontal cross-sections of the plurality of annular vertical rods 111, a shrinking ring 113 connected to the bottom of the plurality of vertical rods 111, and a snap ring 114 connected to the top of the plurality of vertical rods 111 for fixing to the filter bag mounting hole plate 9, thereby forming a cylindrical cage 11. The shrinking ring 113 at the bottom facilitates the cage 11 to be inserted into the filter bag 10. The vertical rods 111 and the hoops 112 support the inner side of the filter bag 10. The snap ring 114 is fixed to the filter bag mounting hole plate 9 as a whole, and has the characteristics of light weight and stable and firm installation.

[0025] As a further improvement of the above technical solution, Figure 4 As shown, the clamping ring 114 includes a cover ring 115 with a larger radius on the upper part for covering the upper end of the filter bag mounting hole plate 9 and an inner ring 116 with a smaller radius on the lower part for sleeved on the inner side of the filter bag 10. During installation, the filter bag 10 mouth is first pulled upward from the hole of the filter bag mounting hole plate 9 and fixed, and then the cage 11 is inserted from the installed filter bag 10 mouth, so that the inner ring 116 is clamped downward from the inside of the filter bag 10 into the hole of the filter bag mounting hole plate 9, and the cover ring 115 covers the filter bag mounting hole plate 9. This connection structure is not only secure and easy to install, but also can provide double reinforcement for the filter bag 10 to avoid leakage of the filter bag 10 due to loose connection, thereby further ensuring the dust removal effect.

[0026] As a preferred implementation of the above technical solution, Figure 4As shown, a sealing ring 117 is provided on the outer side of the inner ring 116, and an annular groove (not shown in the figure) is provided on the filter bag mounting hole plate 9 on the outer side of the corresponding filter bag 10. After installation, the sealing ring 117 is stuck in the annular groove, which further improves the sealing and connection strength of the connection. In this embodiment, the sealing ring 117 is made of high temperature and corrosion resistant rubber material.

[0027] As a preferred implementation of the above technical solution, the clamping rings 114 of two adjacent cages 11 in the same row are connected by a detachable connecting plate 12, so that the separate cages 11 are connected into a whole, thereby improving the installation and disassembly efficiency.

[0028] As a preferred implementation of the above technical solution, a handle (not shown in the figure) is provided on the ash cart 7 to facilitate pulling the ash cart 7 out from the shell 1.

[0029] As a preferred implementation of the above technical solution, the bottom of the longitudinal partition 4 on the side of the deflocculation chamber 2 has an outwardly inclined slope. The setting of the slope increases the cross-section of the portion, thereby preliminarily dispersing the airflow and reducing the flow rate, so that more dust can fall into the ash truck 7 by gravity, thereby extending the cleaning cycle of the filter bag 10.

[0030] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the purpose and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A discharge dust removal mechanism for an ultrafine pulverizer, characterized in that: The utility model comprises a shell, a longitudinal partition which divides the upper space of the shell into a deflocculation chamber and a filtering chamber, a debris discharge port arranged at the bottom of the deflocculation chamber and the filtering chamber, an ash cart installed at the lower end of the debris discharge port through two limiting tracks on both sides, a rotating brush inserted from the upper end of the deflocculation chamber, a plurality of array-arranged filter bags suspended in the filtering chamber through a sealed filter bag mounting hole plate, a plurality of cages arranged in the plurality of filter bags, and a compressed air pipe arranged at the upper end of the filter bag mounting hole plate corresponding to the plurality of filter bag ports.

2. The discharge dust removal mechanism of the ultrafine pulverizer according to claim 1, characterized in that: The cage frame includes a plurality of vertical rods arranged in a ring, a plurality of hoops connected to the horizontal cross sections of the plurality of ring-shaped vertical rods, a shrinking ring connected to the bottom of the plurality of vertical rods, and a clamping ring connected to the top of the plurality of vertical rods for fixing to the filter bag mounting hole plate.

3. The discharge dust removal mechanism of the ultrafine pulverizer according to claim 2, characterized in that: The clamping ring comprises a cover ring with a larger radius at the upper part for overlapping the upper end of the filter bag installation hole plate and an inner ring with a smaller radius at the lower part for sleeved on the inner side of the filter bag.

4. The discharge dust removal mechanism of the ultrafine pulverizer according to claim 3 is characterized in that: A sealing ring is arranged on the outer side of the inner connecting ring, and an annular groove is arranged on the filter bag mounting hole plate on the outer side of the corresponding filter bag.

5. The discharge dust removal mechanism of the ultrafine pulverizer according to claim 2 or 3, characterized in that: The snap-fitting ring parts of two adjacent cage frames in the same row are connected via a detachable connecting plate.

6. The discharge dust removal mechanism of the ultrafine pulverizer according to claim 1, characterized in that: The ash cart is provided with a handle.

7. The discharge dust removal mechanism of the ultrafine pulverizer according to claim 1, characterized in that: The bottom of the longitudinal partition plate on the deflocculation chamber side has an outwardly inclined slope.

Images