A cement grinding aid atomizing device

Abstract

The utility model relates to cement processing technical field, and disclose a kind of cement grinding aid atomizing device, including connecting pipe, first shell and second shell, the second shell is arranged in the inside of first shell, the connecting pipe is fixedly connected in the end of first shell, the inner wall of first shell is fixedly connected with connecting ring, the second shell is fixedly connected in the inner wall of connecting ring, the top of first shell is fixedly connected with gas pipe, the gas pipe extends to the gap of first shell and second shell place. The utility model provides that the sliding fit of sealing piston and sealing seat forms dynamic sealing structure, when there is no air pressure, spring pushes sealing piston and press tightly and is set on the sidewall above sealing seat located bar-shaped mouth, blocks grinding aid passage, prevents leakage, when gas pipe is passed into compressed air, air pressure exceeds spring pre-tightening force, sealing piston moves and opens passage, realizes the automatic control of air pressure drive and sealing opening.

Description

Technical Field

[0001] This utility model relates to the field of cement processing technology, and in particular to a cement grinding aid atomizing device. Background Technology

[0002] Cement is the most basic cementitious material in construction engineering, mainly used to prepare concrete, mortar, etc. Cement grinding aid is a chemical admixture added during the grinding process. Its core function is to improve grinding efficiency, reduce energy consumption, and optimize cement performance. Cement and cement grinding aid play different roles in cement production and application, and the two work together to improve production efficiency and performance.

[0003] In the existing technology, during the cement processing, cement grinding aid needs to be evenly sprayed onto the cement raw materials to ensure the subsequent grinding effect of the cement. In order to ensure the uniform effect during spraying, an atomizing device is required to pressurize and atomize the cement grinding aid. After the atomizing device is used, the internal air pressure decreases, and some cement grinding aid may flow back into the atomizing device due to the pressure drop and accumulate on the inner wall of the cavity, which may cause blockage and affect the continuous and stable use of the atomizing device. Utility Model Content

[0004] The purpose of this invention is to solve the problem in the prior art where the internal air pressure of the atomizing device decreases after use, and some cement grinding aid may flow back into the atomizing device due to the pressure drop, accumulating on the inner wall of the cavity and causing blockage, which may affect the subsequent continuous and stable use of the atomizing device. Therefore, a cement grinding aid atomizing device is proposed.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A cement grinding aid atomizing device includes a connecting pipe, a first housing, and a second housing. The second housing is disposed inside the first housing. The connecting pipe is fixedly connected to the end of the first housing. A connecting ring is fixedly connected to the inner wall of the first housing. The second housing is fixedly connected to the inner wall of the connecting ring. An air supply pipe is fixedly connected to the top of the first housing. The air supply pipe extends to the gap between the first housing and the second housing. A through hole is opened on the inner wall of the second housing. A sealing piston is fixedly connected to the inner wall of the second housing located in the through hole.

[0007] Preferably, a nozzle is fixedly connected to one end of the first housing away from the connecting pipe, and an atomizing plate is fixedly connected to the inner wall of the nozzle.

[0008] Preferably, a fixing ring is fixedly connected to the inner wall of the through hole of the second housing, and a sealing seat is fixedly connected to the inner wall of the fixing ring. The sealing piston is slidably disposed on the side wall of the sealing seat.

[0009] Preferably, the inner wall of the sealing piston is provided with a through groove, the inner wall of the sealing seat is provided with a concave hole that matches the inner wall of the fixing ring, and the inner wall of the sealing seat located in the concave hole is provided with a plurality of strip-shaped openings.

[0010] Preferably, a retaining ring is fixedly connected to the inner wall of the second housing at the through hole, and a spring is fixedly connected to the side wall of the retaining ring. The end of the spring away from the retaining ring is fixedly connected to the sealing piston.

[0011] Preferably, the connecting pipe is connected to the second housing, and a threaded groove is formed on the inner wall of the end of the connecting pipe opposite to the first housing.

[0012] Compared with the prior art, this utility model provides a cement grinding aid atomizing device, which has the following beneficial effects:

[0013] 1. This cement grinding aid atomizing device forms a dynamic sealing structure through the sliding cooperation between the sealing piston and the sealing seat. When there is no air pressure, the spring pushes the sealing piston to press tightly against the side wall of the sealing seat above the strip opening, blocking the grinding aid passage and preventing leakage. When compressed air is introduced into the air supply pipe and the air pressure exceeds the spring preload, the sealing piston moves to open the passage, realizing automatic control of air pressure drive and sealing opening.

[0014] 2. In this cement grinding aid atomizing device, the grinding aid enters the second housing through a connecting pipe, and the air supply pipe is connected to a compressed air source. High-pressure air enters the gap between the first and second housings, forming an annular air pressure chamber. When the air pressure in the gap reaches a set value, the air pressure pushes the sealing piston to move outward of the through hole against the spring force. At this time, the through groove on the inner wall of the sealing piston is aligned with the strip opening of the sealing seat. At this time, the high-pressure gas pipe rubs against the sealing seat and the fixing ring, extending into the interior of the second housing to mix with the grinding aid, which can ensure the subsequent atomization effect.

[0015] 3. The cement grinding aid atomizing device is formed by a first shell and a second shell fixedly connected by a connecting ring to form a coaxial double shell structure. This ensures that the airflow is evenly distributed on the outer periphery of the second shell. The compressed air forms a high-speed annular airflow in the gap, which carries the grinding aid to the nozzle on one hand, and further refines the droplets through shearing action on the other hand. The converging outlet design of the nozzle can accelerate the gas-liquid mixing flow. Combined with the turbulence effect of the atomizing plate, it achieves efficient atomization. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the structure of a cement grinding aid atomizing device proposed in this utility model;

[0017] Figure 2 This is a partial structural cross-sectional view of a cement grinding aid atomizing device proposed in this utility model;

[0018] Figure 3 for Figure 2 Enlarged structural diagram of part A in the middle section;

[0019] Figure 4 for Figure 3 A schematic diagram of the structure of the central sealing piston and sealing seat.

[0020] In the diagram: 1 connecting pipe, 2 first housing, 3 second housing, 4 connecting ring, 5 nozzle, 6 atomizing plate, 7 air supply pipe, 8 fixing ring, 9 sealing seat, 10 sealing piston, 11 retaining ring, 12 spring. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] Reference Figure 1-4 A cement grinding aid atomizing device includes a connecting pipe 1, a first housing 2, and a second housing 3. The second housing 3 is disposed inside the first housing 2. The connecting pipe 1 is fixedly connected to the end of the first housing 2. A connecting ring 4 is fixedly connected to the inner wall of the first housing 2. The second housing 3 is fixedly connected to the inner wall of the connecting ring 4. An air supply pipe 7 is fixedly connected to the top of the first housing 2. The air supply pipe 7 extends to the gap between the first housing 2 and the second housing 3. A through hole is opened on the inner wall of the second housing 3. A sealing piston 10 is fixedly connected to the inner wall of the second housing 3 located in the through hole. The connecting pipe 1 is connected to the second housing 3.

[0023] A fixing ring 8 is fixedly connected to the inner wall of the second housing 3 through the hole. A sealing seat 9 is fixedly connected to the inner wall of the fixing ring 8. A sealing piston 10 is slidably disposed on the side wall of the sealing seat 9. A through groove is opened on the inner wall of the sealing piston 10. A concave hole matching the inner wall of the fixing ring 8 is opened on the inner wall of the sealing seat 9 located in the concave hole. Multiple strip-shaped openings are opened around the inner wall of the sealing seat 9. A retaining ring 11 is fixedly connected to the inner wall of the second housing 3 through the hole. A spring 12 is fixedly connected to the side wall of the retaining ring 11. The end of the spring 12 away from the retaining ring 11 is fixedly connected to the sealing piston 10.

[0024] The grinding aid enters the interior of the second housing 3 through the connecting pipe 1, and the air supply pipe 7 is connected to the compressed air source. High-pressure air enters the gap between the first housing 2 and the second housing 3 to form an annular air pressure chamber. When the air pressure in the gap reaches the set value, the air pressure pushes the sealing piston 10 to move outward of the through hole against the elastic force of the spring 12. At this time, the through groove on the inner wall of the sealing piston 10 is aligned with the strip opening of the sealing seat 9. At this time, the high-pressure gas pipe rubs and mixes with the sealing seat 9 and the fixing ring 8, extending into the interior of the second housing 3 to mix with the grinding aid, which can ensure the subsequent atomization effect.

[0025] The sliding fit between the sealing piston 10 and the sealing seat 9 forms a dynamic sealing structure. When there is no air pressure, the spring 12 pushes the sealing piston 10 to press against the side wall of the sealing seat 9 above the slot, blocking the grinding aid passage and preventing leakage. When compressed air is introduced into the air supply pipe 7 and the air pressure exceeds the preload of the spring 12, the sealing piston 10 moves to open the passage, realizing automatic control of air pressure drive and seal opening. The retaining ring 11 limits the movement stroke of the sealing piston 10 to avoid excessive displacement leading to seal failure, and at the same time provides support for the spring 12 to ensure the stability of pressure control.

[0026] To ensure atomization effect, such as Figure 1-4 As shown, the inner wall of the connecting pipe 1 opposite to the first housing 2 has a threaded groove, and the nozzle 5 is fixedly connected to the end of the first housing 2 opposite to the connecting pipe 1. The atomizing plate 6 is fixedly connected to the inner wall of the nozzle 5.

[0027] The connecting pipe 1 is connected to the external grinding aid storage tank through a threaded groove. The mixed grinding aid and compressed air are sprayed out through the nozzle 5. The atomizing plate 6 cuts and impacts the grinding aid in the high-speed airflow, dispersing it into fine droplets. The porous structure and specific geometry of the atomizing plate 6 can optimize the atomized particle size distribution, ensuring that the grinding aid evenly covers the surface of cement particles and improves the grinding effect.

[0028] The first housing 2 is fixedly connected to the second housing 3 via the connecting ring 4, forming a coaxial double-shell structure. This ensures that the airflow is evenly distributed around the outer periphery of the second housing 3. The compressed air forms a high-speed annular airflow in the gap, which carries the abrasive aid to the nozzle 5 on one hand, and further refines the droplets through shearing action on the other. The constricted outlet design of the nozzle 5 can accelerate the gas-liquid mixing flow. Combined with the turbulence effect of the atomizing plate 6, it achieves efficient atomization.

[0029] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A cement grinding aid atomizing device, comprising a connecting pipe (1), a first housing (2), and a second housing (3), characterized in that: The second housing (3) is disposed inside the first housing (2). The connecting pipe (1) is fixedly connected to the end of the first housing (2). A connecting ring (4) is fixedly connected to the inner wall of the first housing (2). The second housing (3) is fixedly connected to the inner wall of the connecting ring (4). A gas supply pipe (7) is fixedly connected to the top of the first housing (2). The gas supply pipe (7) extends to the gap between the first housing (2) and the second housing (3). A through hole is opened on the inner wall of the second housing (3). A sealing piston (10) is fixedly connected to the inner wall of the second housing (3) located in the through hole.

2. The cement grinding aid atomizing device according to claim 1, characterized in that: The first housing (2) is fixedly connected to a nozzle (5) at one end away from the connecting pipe (1), and an atomizing plate (6) is fixedly connected to the inner wall of the nozzle (5).

3. The cement grinding aid atomizing device according to claim 1, characterized in that: The second housing (3) is fixedly connected to the inner wall of the through hole with a fixing ring (8), and the inner wall of the fixing ring (8) is fixedly connected to a sealing seat (9). The sealing piston (10) is slidably disposed on the side wall of the sealing seat (9).

4. The cement grinding aid atomizing device according to claim 3, characterized in that: The inner wall of the sealing piston (10) is provided with a through groove, and the inner wall of the sealing seat (9) is provided with a concave hole that matches the inner wall of the fixing ring (8). The inner wall of the sealing seat (9) is provided with multiple strip-shaped openings around the concave hole.

5. The cement grinding aid atomizing device according to claim 1, characterized in that: The second housing (3) is fixedly connected to the inner wall of the through hole with a retaining ring (11), and a spring (12) is fixedly connected to the side wall of the retaining ring (11). The end of the spring (12) away from the retaining ring (11) is fixedly connected to the sealing piston (10).

6. The cement grinding aid atomizing device according to claim 1, characterized in that: The connecting pipe (1) is connected to the second housing (3), and a threaded groove is provided on the inner wall of the end of the connecting pipe (1) away from the first housing (2).

Images