Anti-precipitation device in cement grinding aid production process

Abstract

The utility model discloses an anti-precipitation device in a cement grinding aid production process, which relates to the technical field of cement grinding aid production and comprises a shell, a stirring motor fixedly mounted in the middle of the top end of the shell, a rotating shaft clamped at the output end of the stirring motor, a stirring rod clamped in the middle of the rotating shaft, and a partition plate arranged at the bottom of the stirring rod. A stirring plate is clamped to the bottom end of the rotating shaft, a feeding hopper penetrates through the top end of the shell, and a first feeding pipe penetrates through the middle of the shell. By arranging a series of structures and controlling the stirring and mixing sequence of the cement grinding aid, the probability that alcohol or alcohol amine substances are mixed and contacted with water glass to generate precipitates is reduced, so that the subsequent processing of the cement grinding aid is facilitated, and the production efficiency of the cement grinding aid is improved. And meanwhile, solute in the liquid cement grinding aid solution filled in the finished product tank is not easy to separate out from the solvent due to long-time standing, so that the probability that the finished product liquid cement grinding aid is precipitated in the finished product tank is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of cement grinding aid production, in particular to an anti-sedimentation device in the cement grinding aid production process. Background Art

[0002] Cement grinding aid is a chemical additive added during the grinding process of cement clinker. It can reduce the electrostatic adsorption and balling phenomenon formed during the grinding process of cement clinker. At the same time, it can reduce the re-agglomeration tendency of ultrafine particles formed during the grinding process to improve the fluidity of cement. Cement grinding aid is made by mixing and stirring a variety of chemical raw materials, and is divided into powder grinding aid and liquid grinding aid.

[0003] However, during the production process of the existing liquid cement grinding aid, since the raw materials of the liquid cement grinding aid contain commonly used substances such as alcohols and amines, when mixed and stirred with another raw material, water glass, an acid-base neutralization reaction will occur to generate precipitated substances, resulting in the cement grinding aid being more likely to precipitate during production, which is not conducive to the subsequent processing of the grinding aid; in addition, after the existing cement grinding aid is completed, it is usually stored in a finished product tank, and since the finished liquid cement grinding aid is a solution containing a solvent and a solute, after standing in the finished product tank for a long time, the solute is more likely to precipitate from the solvent and produce precipitation, resulting in the finished cement grinding aid being more likely to precipitate in the finished product tank. Utility Model Content

[0004] The purpose of the utility model is to provide an anti-sedimentation device in the production process of cement grinding aids to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an anti-sedimentation device in the production process of cement grinding aids, comprising an outer shell, a stirring motor is fixedly installed in the middle of the top of the outer shell, a rotating shaft is clamped at the output end of the stirring motor, a stirring rod is clamped in the middle of the rotating shaft, a partition is provided at the bottom of the stirring rod, a stirring plate is clamped at the bottom of the rotating shaft, a feed hopper passes through the top of the outer shell, a first feed pipe passes through the middle of the outer shell, a connecting pipe passes through the bottom of one side wall of the outer shell, a sleeve is sleeved on one end of the connecting pipe, a second feed pipe passes through the top of the sleeve, a stirring blade is provided inside the sleeve, and a discharge pipe is penetrated at the front of the sleeve.

[0006] Preferably, the pipe opening at the bottom end of the first feed pipe is located below the partition, and the first feed pipe is communicated with the interior of the shell.

[0007] Preferably, two clamping rods are fixedly connected to the inner wall of the sleeve, and a rotating rod is rotatably connected to the middle part of the clamping rod.

[0008] Preferably, the stirring blade is engaged with the rotating rod, and the stirring blade is movably embedded in the sleeve through the rotating rod.

[0009] Preferably, a filter screen is embedded at the junction of the connecting pipe and the outer shell, and a scraper strip is fixedly connected to the end of the stirring plate.

[0010] Preferably, the stirring plate is movably embedded in the housing via a rotating shaft, and the scraper is movably connected to the filter screen via the stirring plate.

[0011] Preferably, a solenoid valve is installed in the middle of the partition, the rotating shaft is movably connected to the partition, and the partition is fixedly connected to the shell.

[0012] Compared with the prior art, the beneficial effects of the utility model are:

[0013] 1. The anti-precipitation device in the production process of the cement grinding aid can make the alcohols and alcoholamines and the remaining liquid cement grinding aid raw materials evenly mixed first through the partition, the feed hopper, the stirring rod, the first feed pipe and the stirring plate, and then mix the liquid cement grinding aid solution formed by the mixture with water glass. By controlling the stirring and mixing order of the cement grinding aid, the probability of precipitation caused by the mixing and contact of the alcohols or alcoholamines and the water glass is reduced, which is more conducive to the subsequent processing of the cement grinding aid.

[0014] 2. The anti-precipitation device in the production process of the cement grinding aid can mix a proper amount of adhesive into the finished liquid cement grinding aid product after the mixing and preparation through the sleeve, the connecting pipe, the second feed pipe and the stirring blade, so that the solute in the liquid cement grinding aid solution loaded into the finished product tank is not easy to precipitate from the solvent due to long-term standing, thereby reducing the probability of precipitation of the finished liquid cement grinding aid in the finished product tank. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 This is a schematic diagram of the structure of the partition and the solenoid valve of the utility model;

[0017] Figure 3 This is a schematic diagram of the first feed pipe and scraper structure of the utility model;

[0018] Figure 4 This is a schematic diagram of the sleeve and stirring blade structure of the utility model.

[0019] In the figure: 1. shell; 2. stirring motor; 3. feed hopper; 4. first feed pipe; 5. connecting pipe; 6. second feed pipe; 7. sleeve; 8. discharge pipe; 9. clamping rod; 10. stirring blade; 11. rotating rod; 12. filter; 13. stirring plate; 14. scraper; 15. rotating shaft; 16. solenoid valve; 17. partition; 18. stirring rod. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the 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 orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as a limitation on the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0022] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0023] like Figures 1 to 4 As shown, the anti-sedimentation device in the production process of cement grinding aids in this embodiment includes a shell 1, a stirring motor 2 is fixedly installed in the middle of the top of the shell 1, a rotating shaft 15 is engaged with the output end of the stirring motor 2, a stirring rod 18 is engaged with the middle of the rotating shaft 15, a partition 17 is provided at the bottom of the stirring rod 18, a stirring plate 13 is engaged with the bottom end of the rotating shaft 15, a feed hopper 3 is penetrated through the top of the shell 1, a first feed pipe 4 is penetrated through the middle of the shell 1, a connecting pipe 5 is penetrated through the bottom of one side wall of the shell 1, a sleeve 7 is sleeved on one end of the connecting pipe 5, a second feed pipe 6 is penetrated at the top of the sleeve 7, a stirring blade 10 is provided inside the sleeve 7, and a discharge pipe 8 is penetrated on the front of the sleeve 7.

[0024] Specifically, the shell 1 is a cylindrical structure with a hollow interior and good sealing performance. The output end of the stirring motor 2 can drive the stirring rod 18 and the stirring plate 13 at the same time through the rotating shaft 15, so that the stirring rod 18 can rotate on the top of the partition 17, so that the alcohol or alcohol amine substances entering through the feed hopper 3 can be mixed and stirred first, and the partition 17 can divide the interior of the shell 1 into two stirring areas, thereby realizing the control of the mixing and stirring sequence of the cement grinding aid raw materials. The stirring plate 13 can be used as a stirring structure for subsequent raw materials such as water glass and the cement grinding aid mixed solution. The feed hopper 3 is used to add cement grinding aid liquid and alcohol or alcohol amine raw materials. The first feed pipe 4 is used to add colloidal raw materials such as water glass, so that the raw materials that are more prone to acid-base neutralization reactions enter the device from different entrances for mixing and stirring, thereby realizing the control of the mixing and stirring sequence of the liquid cement grinding aid raw materials. The connecting pipe 5 is used to connect the sleeve 7 and the interior of the shell 1. The sleeve 7 is used to mix the added adhesive with the liquid cement grinding aid finished product. The stirring blade 10 can accelerate the mixing of the adhesive and the liquid cement grinding aid.

[0025] Furthermore, the pipe opening at the bottom end of the first feed pipe 4 is located below the partition 17, and the first feed pipe 4 is connected to the interior of the outer shell 1. The first feed pipe 4 can prevent the water glass from contacting with alcohols or amines, thereby avoiding the acid-base neutralization reaction between the liquid cement grinding aid raw materials to produce precipitation.

[0026] Furthermore, two clamping rods 9 are fixedly connected to the inner wall of the sleeve 7, and a rotating rod 11 is rotatably connected to the middle part of the clamping rod 9. The clamping rod 9 supports and limits the rotating rod 11, so that the rotating rod 11 can rotate smoothly in the sleeve 7, thereby allowing the stirring blade 10 to rotate stably in the sleeve 7.

[0027] Furthermore, the stirring blade 10 is engaged and connected with the rotating rod 11, and the stirring blade 10 is movably embedded in the sleeve 7 through the rotating rod 11. The stirring blade 10 can be impacted by the liquid cement grinding aid flowing into the sleeve 7 from the connecting pipe 5 and the adhesive flowing down from the top and rotate in the sleeve 7, so that the adhesive and the liquid cement grinding aid finished product are evenly mixed, thereby facilitating the subsequent storage of the liquid cement grinding aid finished product in the finished product tank.

[0028] Furthermore, a filter screen 12 is embedded at the junction of the connecting pipe 5 and the outer shell 1, and a scraper bar 14 is fixedly connected to the end of the stirring plate 13. The filter screen 12 is a micron-level filter screen 12, which can prevent the precipitate of the cement grinding aid from flowing out of the outer shell 1 and stay in the outer shell 1 for continuous stirring until the precipitate is re-dispersed and then enters the sleeve 7, thereby helping to reduce the generation of precipitate in the liquid cement grinding aid solution.

[0029] Furthermore, the stirring plate 13 is movably embedded in the outer shell 1 through the rotating shaft 15, and the scraper bar 14 is movably connected to the filter screen 12 through the stirring plate 13. Driven by the stirring plate 13, the scraper bar 14 can scrape against the side wall of the filter screen 12, so that the sediment blocked on the filter screen 12 can be quickly scraped off, thereby facilitating the sediment to return to the outer shell 1 for stirring, thereby reducing the probability of precipitation of the cement grinding aid during the production process.

[0030] Furthermore, a solenoid valve 16 is installed in the middle of the partition 17, the rotating shaft 15 is movably connected to the partition 17, and the partition 17 is fixedly connected to the outer shell 1. After the solenoid valve 16 is opened, the mixed liquid of the cement grinding aid and the alcohol mixed in advance can flow into the bottom of the inner side of the outer shell 1 and be mixed and stirred with the water glass added later, thereby realizing the generation of the cement grinding aid.

[0031] The method of using the present embodiment is as follows: when using the cement grinding aid anti-sedimentation device, the device needs to be connected to an external power supply first, and then cement grinding aid liquid and alcohol or amine substances are added to the feed hopper 3, so that the mixed solution converges at the top of the partition 17, and then the stirring motor 2 is started to drive the rotating shaft 15 to rotate, and the stirring rod 18 is driven to stir the mixed solution remaining on the partition 17. After the mixed solution is stirred, the solenoid valve 16 is opened, so that the mixed and stirred grinding aid solution passes through the partition 17 to flow to the bottom of the inner side of the shell 1 and contacts with the stirring plate 13. Then, raw materials such as water glass can be added to the first feed pipe 4, and the stirring motor 2 is continued to be started, so that the rotating shaft 15 drives the stirring plate 13 to mix the cement grinding aid and raw materials such as water glass. The cement grinding aid after mixing and stirring will pass through the filter screen 12 and enter the connecting pipe 5. At this time, a small amount of sediment produced in the outer shell 1 will be intercepted by the filter screen 12, and then return to the outer shell 1 for mixing and stirring under the scraping of the scraper 14, so that the sediment is dispersed. Then the dispersed sediment will pass through the filter screen 12 and enter the connecting pipe 5 to mix with the finished liquid cement grinding aid that previously entered the connecting pipe 5, and then enter the sleeve 7. Then, the adhesive can be injected into the second feeding pipe 6. At this time, the stirring blade 10 in the sleeve 7 will rotate in the middle of the clamping rod 9 through the rotating rod 11 under the impact of the liquid, so that the adhesive and the finished liquid cement grinding aid in the sleeve 7 are evenly mixed. Finally, the liquid cement grinding aid mixed with the adhesive will be discharged from the liquid outlet pipe.

[0032] Finally, it should be noted that the above description is only a preferred embodiment of the utility model and is not intended to limit the utility model. Although the utility model is described in detail with reference to the above embodiments, those skilled in the art can still modify the technical solutions recorded in the above embodiments or replace some of the technical features therein by equivalents. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the utility model shall be included in the protection scope of the utility model.

Claims

1. A device for preventing precipitation in the production process of cement grinding aids, comprising a housing (1), characterized in that: A stirring motor (2) is fixedly mounted in the middle of the top of the shell (1), a rotating shaft (15) is engaged with the output end of the stirring motor (2), a stirring rod (18) is engaged in the middle of the rotating shaft (15), a partition (17) is provided at the bottom of the stirring rod (18), a stirring plate (13) is engaged at the bottom of the rotating shaft (15), a feed hopper (3) is passed through the top of the shell (1), a first feed pipe (4) is passed through the middle of the shell (1), a connecting pipe (5) is passed through the bottom of one side wall of the shell (1), a sleeve (7) is sleeved on one end of the connecting pipe (5), a second feed pipe (6) is passed through the top of the sleeve (7), a stirring blade (10) is provided inside the sleeve (7), and a discharge pipe (8) is passed through the front of the sleeve (7).

2. The device for preventing precipitation in the production process of cement grinding aid according to claim 1, characterized in that: The pipe opening at the bottom end of the first feed pipe (4) is located below the partition (17), and the first feed pipe (4) is communicated with the interior of the outer shell (1).

3. The device for preventing precipitation in the production process of cement grinding aid according to claim 1, characterized in that: Two clamping rods (9) are fixedly connected to the inner wall of the sleeve (7), and a rotating rod (11) is rotatably connected to the middle of the clamping rod (9).

4. The device for preventing precipitation in the production process of cement grinding aid according to claim 3, characterized in that: The stirring blade (10) is engaged with the rotating rod (11), and the stirring blade (10) is movably embedded and connected with the sleeve (7) through the rotating rod (11).

5. The device for preventing precipitation in the production process of cement grinding aid according to claim 1, characterized in that: A filter screen (12) is embedded at the junction of the connecting pipe (5) and the outer shell (1), and a scraper strip (14) is fixedly connected to the end of the stirring plate (13).

6. The device for preventing precipitation in the production process of cement grinding aid according to claim 5, characterized in that: The stirring plate (13) is movably embedded and connected to the housing (1) via a rotating shaft (15), and the scraper (14) is movably connected to the filter screen (12) via the stirring plate (13).

7. The device for preventing precipitation in the production process of cement grinding aid according to claim 1, characterized in that: A solenoid valve (16) is installed in the middle of the partition (17), the rotating shaft (15) is movably connected to the partition (17), and the partition (17) is fixedly connected to the housing (1).

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