A dust removal device and process for cement production

Abstract

The present invention belongs to the technical field of cement production and processing, and specifically relates to a dust removal device and process for cement production, wherein the dust removal device comprises: a dust removal bin, wherein a partition is provided in the dust removal bin, and the partition divides the dust removal bin into an upper chamber and a lower chamber; a dust bag assembly, wherein the first end of the dust bag assembly is provided with an opening; a back-blowing device, comprising a high-pressure gas source and an air supply pipe, wherein the high-pressure gas source is connected to the inner cavity of each of the dust bag assemblies through the air supply pipe; the dust bag assembly is movably connected to the partition in a vertical direction; and a closing mechanism is provided between the dust bag assembly and the partition. The present invention sets a closing mechanism at the opening position of the cloth bag, and when the cloth bag is back-blown, the closing mechanism can close the opening of the cloth bag, thereby preventing the back-blowing airflow from directly entering the main air outlet of the dust collector, reducing the pressure loss of the back-blowing airflow, and improving the back-blowing efficiency.

Description

Technical Field

[0001] The invention belongs to the technical field of cement production and processing, and specifically relates to a dust removal device and process for cement production. Background Art

[0002] A large amount of dust is generated during the cement production process, some of which can be recycled. This type of dust is generally filtered and recycled through a bag dust collector. The bag dust collector uses negative pressure to drive the airflow to pass through the bag. The dust in the airflow will be adsorbed on the outer wall of the bag. By regularly backblowing the bag, the dust on the outer wall of the bag can be made to fall off, thereby realizing the collection of dust. In order to ensure the continuous operation of the equipment, the backblowing process is generally carried out when the dust collector is working normally. For example, the bags can be divided into multiple groups, and each group of bags can be backblown in turn, so that some dust bags are always in normal working condition. However, when the backblowing system in the prior art is working, the outlet of the bag is always connected to the main air outlet of the dust collector, which will cause a part of the backblowing gas to be discharged from the main air outlet of the dust collector, causing a pressure loss of the backblowing airflow, thereby affecting the backblowing effect. Summary of the invention

[0003] In view of the above-mentioned shortcomings of the prior art, an object of the present invention is to provide a dust removal device and process for cement production which can improve the back-blowing efficiency.

[0004] To achieve the above-mentioned and other related purposes, the present invention provides a dust removal device for cement production, comprising:

[0005] A dust removal bin, wherein a partition is provided in the dust removal bin, the partition divides the dust removal bin into an upper chamber and a lower chamber, and an air inlet communicating with the lower chamber and an air outlet communicating with the upper chamber are provided on a bin wall of the dust removal bin;

[0006] A dust bag assembly, wherein the first end of the dust bag assembly is provided with an opening, the main body of the dust bag assembly is located in the lower chamber, and the first end of the dust bag assembly passes through the hole provided on the partition and extends into the upper chamber;

[0007] The back-blowing device comprises a high-pressure gas source and an air delivery pipe, wherein the high-pressure gas source is connected to the inner cavity of each dust bag assembly through the air delivery pipe, and the air delivery pipe is provided with a solenoid valve;

[0008] The dust bag assembly is movably connected to the partition in a vertical direction so that the dust bag assembly can be switched between a first position and a second position, wherein the first position is higher than the second position;

[0009] A closing mechanism is provided between the dust bag assembly and the partition, and the closing mechanism is configured such that when the dust bag assembly is located at the first position, the opening of the dust bag assembly is communicated with the upper chamber, and when the dust bag assembly is located at the second position, the opening of the dust bag assembly is blocked by the closing mechanism.

[0010] In an optional embodiment of the present invention, a first elastic element is provided between the dust bag assembly and the partition, and the first elastic element is configured such that its elastic force can drive the dust bag assembly located at the second position to move to the first position.

[0011] In an optional embodiment of the present invention, a holding mechanism is provided between the dust bag assembly and the partition, and the holding mechanism is configured to be able to hold the dust bag assembly in the first position in the first position and to be able to release the dust bag assembly from the first position.

[0012] In an optional embodiment of the present invention, a linkage mechanism is provided between the air supply pipe and the retaining mechanism, and the linkage mechanism is configured so that when the solenoid valve is closed, the retaining mechanism retains the dust bag assembly located at the first position at the first position, and when the solenoid valve is opened, the linkage mechanism drives the retaining mechanism to release the dust bag assembly located at the first position.

[0013] In an optional embodiment of the present invention, the retaining mechanism includes a notch portion provided on the outer wall of the dust bag assembly, and a clamping plate provided on the partition, the clamping plate being embedded in the notch portion, the clamping plate being provided with an avoidance groove, the clamping plate being movably connected to the partition in a horizontal direction so that the avoidance groove can be aligned with or staggered with the notch portion.

[0014] In an optional embodiment of the present invention, the linkage mechanism includes a valve housing, a valve core and a second elastic element, the valve housing is provided with a valve hole for axial movement of the valve core, one end of the valve hole is communicated with the outlet of the solenoid valve, an exhaust hole is provided on the side wall of the valve hole, the exhaust hole is communicated with the inner cavity of the dust bag assembly through the air supply pipe, one end of the valve core passes through the outer side of the other end of the valve hole and is connected to the clamping plate; the valve core is configured to be able to switch between a first axial position and a second axial position, when the valve core is in the first axial position, the exhaust hole is blocked by the valve core, and the avoidance groove is staggered with the notch portion, when the valve core is in the second axial position, the exhaust hole is communicated with the valve hole, and the avoidance groove is aligned with the notch portion; the second elastic element is assembled so that its elastic force can drive the valve core in the second axial position to move to the first axial position, and when the solenoid valve is opened, the high-pressure gas can drive the valve core to overcome the elastic force of the second elastic element so that the valve core moves to the second axial position.

[0015] In an optional embodiment of the present invention, the opening is arranged on the side wall of the dust bag assembly, and the closing mechanism includes a sleeve arranged on the partition and slidingly matched with the dust bag assembly, when the dust bag assembly is in the first position, the opening is located above the sleeve, and when the dust bag assembly is in the second position, the opening is blocked by the sleeve.

[0016] In an optional embodiment of the present invention, a baffle is provided at the upper end of the dust bag assembly, and oppositely arranged baffles are provided on the bottom surface of the baffle and the top surface of the partition.

[0017] In an optional embodiment of the present invention, a portion of the air delivery pipe that is connected to the dust bag assembly is provided with a cylindrical plug-in portion, the outer diameter of the cylindrical plug-in portion is matched with the inner diameter of the upper end of the dust bag assembly, the cylindrical plug-in portion is inserted into the dust bag assembly from the upper end of the dust bag assembly, and a through hole is provided on the side wall of the cylindrical plug-in portion, and when the dust bag assembly is located in the first position, the through hole is aligned with the opening.

[0018] In order to achieve the above-mentioned purpose and other related purposes, the present invention also provides a dust removal process for cement production, which uses the dust removal device for cement production to filter and collect dust in the cement production process.

[0019] The technical effect of the present invention is that a closing mechanism is arranged at the opening position of the bag. When the bag is backblown, the closing mechanism can close the opening of the bag, thereby preventing the backblowing airflow from directly entering the main air outlet of the dust collector, reducing the pressure loss of the backblowing airflow and improving the backblowing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 is a three-dimensional diagram of a dust removal device for cement production provided by an embodiment of the present invention;

[0021] Figure 2 is a front view of a dust removal device for cement production provided by an embodiment of the present invention;

[0022] Figure 3 yes Figure 2 AA section view;

[0023] Figure 4 yes Figure 3 I partial enlarged view;

[0024] Figure 5 yes Figure 4 BB cross-sectional view;

[0025] Figure 6 yes Figure 5 CC section view;

[0026] Figure 7 yes Figure 4 A partial cross-sectional view of the position shown in another state;

[0027] Figure 8 yes Figure 7 DD cross-sectional view;

[0028] Fig. 9 yes Figure 8 EE cross-sectional view;

[0029] Fig.10 is an exploded view of a dust bag assembly, a partition plate and an air delivery pipe provided in an embodiment of the present invention;

[0030] Explanation of the reference numerals: 10, dust removal bin; 101, air inlet; 102, air outlet; 103, discharge port; 11, partition; 111, sleeve; 12, upper chamber; 13, lower chamber; 20, dust bag assembly; 201, opening; 202, notch portion; 21, baffle; 22, cylindrical portion; 23, bag cage; 30, backblowing device; 31, high-pressure gas source; 32, solenoid valve; 33, gas pipe; 34, valve housing; 35, valve core; 36, second elastic element; 37, cylindrical plug-in portion; 371, through hole; 40, first elastic element; 50, block; 60, clamping plate; 61, avoidance groove. DETAILED DESCRIPTION

[0031] The following describes the embodiments of the present invention by specific examples, and those skilled in the art can easily understand other advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that the following embodiments and features in the embodiments can be combined with each other without conflict.

[0032] It should be noted that the illustrations provided in the following embodiments are only used to schematically illustrate the basic concept of the present invention, and thus the illustrations only show components related to the present invention rather than being drawn according to the number, shape and size of components in actual implementation. In actual implementation, the type, quantity and proportion of each component may be changed arbitrarily, and the component layout may also be more complicated.

[0033] Bag filter is a kind of equipment used for gas purification, mainly used to collect dust generated in industrial production process. Existing bag filter includes air inlet, filter bag, distribution plate, ash hopper, backflush system and exhaust port; the dust source of gas enters the dust collector through the air inlet; the filter bag is the core part of the bag filter, which is made of filter material. When the gas passes through the filter bag, the dust is captured on the surface of the filter bag; the distribution plate is installed above the filter bag, and the gas enters the filter bag evenly through the distribution plate. There are usually multiple filter bag inlets on the distribution plate to distribute the gas to each filter bag; the ash hopper is located at the bottom of the bag filter, which is used to collect dust falling from the filter bag. There is usually an ash discharge device at the bottom of the ash hopper for regular discharge of accumulated dust; the backflush system is a device for cleaning the filter bag, which removes the accumulated dust by backflush the filter bag regularly; the clean gas treated by the filter bag is discharged from the exhaust port.

[0034] The backflush system is a key dust cleaning device in the bag filter. Its main function is to regularly remove the dust accumulated on the filter bag to maintain the filtration efficiency. The working process of the existing backflush system is as follows: the backflush system works through the backflush pipe installed on the filter bag, and the backflush pipe is usually equipped with a compressed air nozzle; the backflush system blows the airflow into the filter bag in the opposite direction through compressed air. The compressed air nozzle is arranged on the top of the filter bag or inside the distribution plate. By spraying high-pressure air flow, a strong airflow is formed to impact the surface of the filter bag; when the high-pressure air enters the filter bag, the dust is blown off the side wall of the filter bag and falls into the ash hopper. This process is usually intermittent, and the system will automatically control the frequency and time of backflush to ensure the cleaning effect of the filter bag.

[0035] In order to ensure the continuous operation of the equipment, the backblowing process is generally carried out when the dust collector is working normally. For example, the bags can be divided into multiple groups, and each group of bags can be backblown in turn, so that some dust bags are always in normal working state. However, when the backblowing system in the prior art is working, the outlet of the bag is always connected to the main air outlet of the dust collector, which will cause a part of the backblowing gas to be discharged from the main air outlet of the dust collector, causing pressure loss of the backblowing airflow, thereby affecting the backblowing effect. For this reason, the present invention sets a closing mechanism at the opening position of the bag. When the bag is backblown, the closing mechanism can close the opening of the bag, thereby preventing the backblowing airflow from directly entering the main air outlet of the dust collector, reducing the pressure loss of the backblowing airflow, and improving the backblowing efficiency.

[0036] See also Figure 1-Figure 10 As shown, the technical solution of the present invention is described in detail below in conjunction with specific embodiments:

[0037] See also Figure 1-3 As shown, the dust removal device for cement production provided by the embodiment of the present invention includes a dust removal bin 10, a dust bag assembly 20 and a back-blowing device 30; a partition 11 is provided in the dust removal bin 10, and the partition 11 divides the dust removal bin 10 into an upper chamber 12 and a lower chamber 13, and an air inlet 101 connected to the lower chamber 13 and an air outlet 102 connected to the upper chamber 12 are provided on the bin wall of the dust removal bin 10. In a further embodiment, a discharge port 103 may be provided at the bottom of the dust removal bin 10, for example, and a valve may be provided on the discharge port 103 for discharging the collected dust; please refer to Figure 3 , 4 As shown, the first end of the dust bag assembly 20 is provided with an opening 201, the main body of the dust bag assembly 20 is located in the lower chamber 13, and the first end of the dust bag assembly 20 passes through the hole opened on the partition 11 and extends into the upper chamber 12; see Fig.10 As shown, in a specific embodiment, the dust bag assembly 20 may include a cylindrical portion 22 at the top, a bag cage 23 connected to the bottom of the cylindrical portion 22, and a cloth bag sleeved on the outside of the bag cage 23; see Figure 3 , 4 As shown, the backflush device 30 includes a high-pressure gas source 31 and a gas delivery pipe 33. The high-pressure gas source 31 is connected to the inner cavity of each dust bag assembly 20 through the gas delivery pipe 33. The gas delivery pipe 33 is provided with a solenoid valve 32; see Figure 4 , 7As shown, the dust bag assembly 20 is movably connected to the partition 11 in the vertical direction so that the dust bag assembly 20 can switch between a first position and a second position, wherein the first position is higher than the second position; a closing mechanism is provided between the dust bag assembly 20 and the partition 11, and the closing mechanism is configured such that when the dust bag assembly 20 is located in the first position, the opening 201 of the dust bag assembly 20 is communicated with the upper chamber 12, and when the dust bag assembly 20 is located in the second position, the opening 201 of the dust bag assembly 20 is blocked by the closing mechanism.

[0038] The present invention provides a closing mechanism at the opening 201 of the bag. When the bag is backblown, the closing mechanism can close the opening 201 of the bag, thereby preventing the backblowing airflow from directly entering the air outlet 102 of the dust collector, reducing the pressure loss of the backblowing airflow and improving the backblowing efficiency.

[0039] See also Figure 4 , Figure 7 As shown, in an optional embodiment of the present invention, a first elastic element 40 is provided between the dust bag assembly 20 and the partition 11, and the first elastic element 40 is configured so that its elastic force can drive the dust bag assembly 20 located in the second position to move to the first position; a holding mechanism is provided between the dust bag assembly 20 and the partition 11, and the holding mechanism is configured so that the dust bag assembly 20 located in the first position can be held in the first position, and the dust bag assembly 20 can be released from the first position.

[0040] It should be understood that the first elastic element 40 cooperates with the holding mechanism to achieve the up and down floating of the dust bag assembly 20. Figure 4 , Figure 7As shown, when the dust bag assembly 20 is in an unloaded state (i.e., the state where the dust bag assembly 20 has just been back-blown and cleaned), the elastic force of the first elastic element 40 is greater than the gravity of the dust bag assembly 20. At this time, the dust bag is lifted to the first position by the first elastic element 40, and the holding mechanism holds the dust bag assembly 20 in the first position. As the dust attached to the dust bag assembly 20 gradually increases, the sum of the gravity of the dust bag assembly 20 and the dust gradually exceeds the elastic force of the first elastic element 40. However, at this time, due to the existence of the holding mechanism, the dust bag assembly 20 still remains in the first position; when cleaning is required, the holding mechanism releases the dust bag assembly 20. At this time, the dust bag assembly 20 moves downward to the second position under the action of gravity, thereby closing the opening 201 and reducing the pressure loss of the back-blowing airflow; at the same time, the impact generated when the dust bag assembly 20 falls downward to the extreme position can cause most of the dust to fall off, thereby reducing the back-blowing time and improving the cleaning efficiency. During the backblowing process, the pressure of the backblowing airflow can keep the dust bag assembly 20 in the second position. After the backblowing is completed, the internal pressure of the dust bag assembly 20 is reduced, and the dust bag assembly 20 returns to the first position again under the action of the first elastic element 40, keeping the mechanism reset. At this time, the dust bag assembly 20 can continue to filter and collect dust.

[0041] See also Figure 4-Figure 10As shown, in an optional embodiment of the present invention, a linkage mechanism is provided between the air delivery pipe 33 and the holding mechanism, and the linkage mechanism is configured such that when the solenoid valve 32 is closed, the holding mechanism holds the dust bag assembly 20 located at the first position at the first position, and when the solenoid valve 32 is opened, the linkage mechanism drives the holding mechanism to release the dust bag assembly 20 located at the first position. Specifically, the holding mechanism includes a notch 202 provided on the outer wall of the dust bag assembly 20, and a clamping plate 60 provided on the partition 11, the clamping plate 60 is embedded in the notch 202, and an avoidance groove 61 is provided on the clamping plate 60, and the clamping plate 60 is movably connected to the partition 11 in the horizontal direction so that the avoidance groove 61 can be aligned with or staggered from the notch 202. The linkage mechanism includes a valve housing 34, a valve core 35 and a second elastic element 36. The valve housing 34 is provided with a valve hole for the axial movement of the valve core 35. One end of the valve hole is connected to the outlet of the solenoid valve 32. An exhaust hole is provided on the side wall of the valve hole. The exhaust hole is connected to the inner cavity of the dust bag assembly 20 through the air supply pipe 33. One end of the valve core 35 passes through the outer side of the other end of the valve hole and is connected to the clamping plate 60. The valve core 35 is configured to be switchable between a first axial position and a second axial position. When the valve core 35 is in the first axial position, the The exhaust hole is blocked by the valve core 35, and the avoidance groove 61 is staggered with the notch portion 202. When the valve core 35 is located at the second axial position, the exhaust hole is connected to the valve hole, and the avoidance groove 61 is aligned with the notch portion 202. The second elastic element 36 is assembled so that its elastic force can drive the valve core 35 in the second axial position to move to the first axial position, and when the solenoid valve 32 is opened, the high-pressure gas can drive the valve core 35 to overcome the elastic force of the second elastic element 36, so that the valve core 35 moves to the second axial position.

[0042] Furthermore, the opening 201 is arranged on the side wall of the dust bag assembly 20, and the closing mechanism includes a sleeve 111 arranged on the partition 11 and slidingly matched with the dust bag assembly 20. When the dust bag assembly 20 is in the first position, the opening 201 is located above the sleeve 111, and when the dust bag assembly 20 is in the second position, the opening 201 is blocked by the sleeve 111.

[0043] The following combination Figure 4-Figure 10 The working principles of the holding mechanism and the linkage mechanism are explained in detail:

[0044] Assume that Figure 4-Figure 6 The initial state is shown, at which the solenoid valve 32 is closed, the valve core 35 is in the first axial position, and the clamping plate 60 is in Figure 5In the state shown, the dust bag assembly 20 is locked by the clamping plate 60, and the dust bag assembly 20 is kept in the first position, as shown in FIG. Figure 6 When the solenoid valve 32 is opened, Figure 7-9 As shown, the back-blowing airflow first drives the valve core 35 to the second axial position, at which time the clamping plate 60 is in Figure 8 In the position shown, the avoidance groove 61 on the card plate 60 is aligned with the notch portion 202, and the dust bag assembly 20 can move freely in the vertical direction. At this time, the sum of the gravity of the dust bag assembly 20 and the dust is greater than the elastic force of the first elastic element 40, and the dust bag assembly 20 moves downward. Fig. 9 As shown; when the solenoid valve 32 is closed again, at this time, since the dust on the dust bag assembly 20 has been cleared, the gravity of the dust bag assembly 20 is less than the elastic force of the first elastic element 40, and the dust bag assembly 20 returns to the first position under the action of the first elastic element 40, the notch 202 is aligned with the card plate 60, and the card plate 60 and the valve core 35 are reset to the first position under the action of the second elastic element 36 Figure 4 The cleaning process ends at the position shown.

[0045] The first elastic element 40 and the second elastic element 36 in the above embodiment may be compression springs, for example.

[0046] See also Figure 4 , Figure 7 As shown, in an optional embodiment of the present invention, a baffle 21 is provided at the upper end of the dust bag assembly 20, and a stopper 50 is provided on the bottom surface of the baffle 21 and the top surface of the partition 11. In a specific embodiment, a dust bag assembly 20 can be cleaned at the same time, and the dust bag assembly 20 can share the same baffle 21 to simplify the device structure; in a specific embodiment, when the stopper 50 collides, the second elastic element 36 has not yet reached the maximum compression amount, which can enhance the impact effect.

[0047] See also Figure 4-Figure 10 As shown, in an optional embodiment of the present invention, a portion of the air delivery pipe 33 that is in communication with the dust bag assembly 20 is provided with a cylindrical plug-in portion 37, the outer diameter of the cylindrical plug-in portion 37 is adapted to the inner diameter of the upper end of the dust bag assembly 20, the cylindrical plug-in portion 37 is inserted into the dust bag assembly 20 from the upper end of the dust bag assembly 20, and a through hole 371 is provided on the side wall of the cylindrical plug-in portion 37, when the dust bag assembly 20 is located in the first position, the through hole 371 is aligned with the opening 201. In this embodiment, the dust bag assembly 20 has no top wall, so that the back-blowing airflow can avoid generating an upward force on the dust bag assembly 20, thereby ensuring that the dust bag assembly 20 can be kept in the second position under the pressure of the back-blowing airflow during the dust cleaning process.

[0048] The present invention also provides a dust removal process for cement production, and the dust in the cement production process is filtered and collected by using the dust removal device for cement production.

[0049] To summarize, the present invention provides a closing mechanism at the opening 201 of the bag. When the bag is backblown, the closing mechanism can close the opening 201 of the bag, thereby preventing the backblowing airflow from directly entering the main air outlet 102 of the dust collector, reducing the pressure loss of the backblowing airflow, and improving the backblowing efficiency. The impact generated when the dust bag assembly 20 falls downward to the extreme position can cause most of the dust to fall off, thereby reducing the backblowing time and improving the cleaning efficiency.

[0050] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the art may modify or alter the above embodiments without departing from the spirit and scope of the present invention. Therefore, all equivalent modifications or alterations made by a person of ordinary skill in the art without departing from the spirit and technical concept disclosed by the present invention shall still be covered by the claims of the present invention.

[0051] In the description herein, many specific details, such as examples of components and / or methods, are provided to provide a complete understanding of embodiments of the present invention. However, those skilled in the art will recognize that embodiments of the present invention may be practiced without one or more of the specific details or with other devices, systems, components, methods, components, materials, parts, etc. In other cases, well-known structures, materials, or operations are not specifically shown or described in detail to avoid obscuring aspects of embodiments of the present invention.

Claims

1. A dust removal device for cement production, characterized in that: include: A dust removal bin (10), wherein a partition (11) is provided in the dust removal bin (10), wherein the partition (11) divides the dust removal bin (10) into an upper chamber (12) and a lower chamber (13), and an air inlet (101) communicating with the lower chamber (13) and an air outlet (102) communicating with the upper chamber (12) are provided on a bin wall of the dust removal bin (10); A dust bag assembly (20), wherein a first end of the dust bag assembly (20) is provided with an opening (201), a main body of the dust bag assembly (20) is located in the lower chamber (13), and the first end of the dust bag assembly (20) passes through a hole provided on the partition (11) and extends into the upper chamber (12); A back-blowing device (30), comprising a high-pressure gas source (31) and an air delivery pipe (33), wherein the high-pressure gas source (31) is connected to the inner cavity of each dust bag assembly (20) through the air delivery pipe (33), and a solenoid valve (32) is provided on the air delivery pipe (33); The dust bag assembly (20) is movably connected to the partition (11) in a vertical direction, so that the dust bag assembly (20) can be switched between a first position and a second position, wherein the first position is higher than the second position; A closing mechanism is provided between the dust bag assembly (20) and the partition (11), and the closing mechanism is configured such that when the dust bag assembly (20) is located at the first position, the opening (201) of the dust bag assembly (20) is in communication with the upper chamber (12), and when the dust bag assembly (20) is located at the second position, the opening (201) of the dust bag assembly (20) is blocked by the closing mechanism; A first elastic element (40) is provided between the dust bag assembly (20) and the partition (11), and the first elastic element (40) is installed so that its elastic force can drive the dust bag assembly (20) located at the second position to move to the first position; A holding mechanism is provided between the dust bag assembly (20) and the partition (11), the holding mechanism being configured to be capable of holding the dust bag assembly (20) in the first position and capable of releasing the dust bag assembly (20) from the first position; A linkage mechanism is provided between the air delivery pipe (33) and the holding mechanism, and the linkage mechanism is configured such that when the solenoid valve (32) is closed, the holding mechanism holds the dust bag assembly (20) located at the first position at the first position, and when the solenoid valve (32) is opened, the linkage mechanism drives the holding mechanism to release the dust bag assembly (20) located at the first position.

2. The dust removal device for cement production according to claim 1, characterized in that: The holding mechanism comprises a notch portion (202) provided on the outer wall of the dust bag assembly (20), and a clamping plate (60) provided on the partition (11); the clamping plate (60) is embedded in the notch portion (202); a relief groove (61) is provided on the clamping plate (60); the clamping plate (60) is movably connected to the partition (11) in a horizontal direction so that the relief groove (61) can be aligned with or staggered from the notch portion (202).

3. The dust removal device for cement production according to claim 2, characterized in that: The linkage mechanism comprises a valve housing (34), a valve core (35) and a second elastic element (36); the valve housing (34) is provided with a valve hole for axial movement of the valve core (35); one end of the valve hole is communicated with the outlet of the solenoid valve (32); an exhaust hole is provided on the side wall of the valve hole; the exhaust hole is communicated with the inner cavity of the dust bag assembly (20) through the air supply pipe (33); one end of the valve core (35) passes through the outer side of the other end of the valve hole and is connected to the clamping plate (60); the valve core (35) is configured to be switchable between a first axial position and a second axial position; when the valve core (35) is in the first axial position, the valve core (35) is in the second axial position. The exhaust hole is blocked by the valve core (35), and the avoidance groove (61) is staggered with the notch portion (202); when the valve core (35) is located at the second axial position, the exhaust hole is communicated with the valve hole, and the avoidance groove (61) is aligned with the notch portion (202); the second elastic element (36) is assembled so that its elastic force can drive the valve core (35) in the second axial position to move to the first axial position, and when the solenoid valve (32) is opened, the high-pressure gas can drive the valve core (35) to overcome the elastic force of the second elastic element (36) so that the valve core (35) moves to the second axial position.

4. The dust removal device for cement production according to claim 1, characterized in that: The opening (201) is arranged on a side wall of the dust bag assembly (20); the closing mechanism comprises a sleeve (111) arranged on the partition (11) and slidably matched with the dust bag assembly (20); when the dust bag assembly (20) is located in the first position, the opening (201) is located above the sleeve (111); when the dust bag assembly (20) is located in the second position, the opening (201) is blocked by the sleeve (111).

5. The dust removal device for cement production according to claim 1, characterized in that: A baffle (21) is provided at the upper end of the dust bag assembly (20), and oppositely disposed baffles (50) are provided on the bottom surface of the baffle (21) and the top surface of the partition (11).

6. The dust removal device for cement production according to claim 4, characterized in that: A cylindrical plug-in portion (37) is provided at a portion of the air delivery pipe (33) that is in communication with the dust bag assembly (20); the outer diameter of the cylindrical plug-in portion (37) is matched to the inner diameter of the upper end of the dust bag assembly (20); the cylindrical plug-in portion (37) is inserted into the dust bag assembly (20) from the upper end of the dust bag assembly (20); a through hole (371) is provided on a side wall of the cylindrical plug-in portion (37); when the dust bag assembly (20) is located at the first position, the through hole (371) is aligned with the opening (201).

7. A dust removal process for cement production, characterized in that: The dust removal device for cement production described in any one of claims 1 to 6 is used to filter and collect dust in the cement production process.

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