Liquid additive circulation anti-precipitation system and concrete mixing plant

Abstract

The utility model relates to a liquid additive circulation anti-precipitation system and a concrete mixing plant. The liquid additive circulation anti-precipitation system comprises an additive storage tank (1), a pump (2) and a mixing plant additive scale, an inlet pipeline of the pump (2) is communicated with the bottom of the storage tank (1), an outlet pipeline of the pump (2) is connected with an additive scale of a mixing plant, the pump (2) conveys an additive in the storage tank (1) to the additive scale for concrete production, a tee joint (3) is installed on the outlet pipeline of the pump (2), one path of the tee joint is connected into the additive scale through a ball valve A, and the other path of the tee joint is connected into the top of the storage tank (1) through a ball valve B. The device is simple in structure, low in cost, high in reliability and convenient to maintain.

Description

Technical Field

[0001] The utility model relates to the technical field of concrete mixing, in particular to a circulating anti-sedimentation system of a liquid additive and a concrete mixing station thereof. Background Art

[0002] When mixing and producing concrete at a concrete mixing station, in order to improve some performance indicators of concrete, such as workability and pumping performance, it is often necessary to add some additives to assist. Some additives are relatively viscous and easy to precipitate. During the production process of the mixing station, the precipitation of admixtures will affect the delivery capacity of the pump and the performance of the additives, so measures to prevent precipitation are often required. Existing additive anti-precipitation technologies include: introducing compressed air into the additive storage tank to prevent precipitation by air blowing; using an independent circulating pump to pump out the admixtures in the storage tank and then transport them back to the tank to prevent precipitation; and setting a mechanical stirring device in the storage tank to prevent precipitation. Although the existing technical solutions can effectively solve the problem of additive precipitation, the existing technical solutions all require the establishment of an independent anti-precipitation system, which increases the complexity of the additive supply system, increases the equipment investment cost, and increases the failure points where the equipment may have problems, reducing reliability and increasing maintenance difficulty.

[0003] Therefore, there is an urgent need for a liquid additive circulation and anti-sedimentation system and a concrete mixing station thereof which has a simple structure, low cost, high reliability and convenient maintenance. Summary of the invention

[0004] The purpose of the utility model is to overcome the above-mentioned shortcomings and provide a liquid additive circulation anti-sedimentation system and a concrete mixing station thereof which have simple structure, low cost, high reliability and convenient maintenance.

[0005] The purpose of the utility model is achieved in this way:

[0006] A liquid additive circulation and anti-sedimentation system comprises an additive storage tank and a pump; the inlet pipeline of the pump is connected to the bottom of the storage tank, and the outlet pipeline is connected to the additive scale of the mixing station. The pump transports the additive in the storage tank to the additive scale for concrete production. A tee is installed on the outlet pipeline of the pump, one of which is connected to the additive scale through a ball valve A, and the other is connected to the top of the storage tank through a ball valve B.

[0007] Furthermore, a manual ball valve is installed on the inlet pipeline of the pump.

[0008] Furthermore, the ball valve A is a pneumatic ball valve A or a manual ball valve A.

[0009] Furthermore, the ball valve A comprises a pneumatic ball valve A and a manual ball valve A connected in series.

[0010] Furthermore, the ball valve B is a pneumatic ball valve B or a manual ball valve B.

[0011] Furthermore, the ball valve B comprises a pneumatic ball valve B and a manual ball valve B connected in series.

[0012] A concrete mixing station, wherein an additive scale of the concrete mixing station is connected to any one of the above-mentioned liquid additive circulation and anti-sedimentation systems.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] The utility model discloses a liquid additive circulation and sedimentation prevention system. By arranging a circulation pipeline and a corresponding valve on the pipeline of the original additive supply system of the mixing station, the switching between the valves is used to realize that one pump can not only supply additives for the production of the mixing station, but also realize the circulation of additives to prevent sedimentation. The utility model has a simple structure, low cost and simple operation.

[0015] The utility model discloses a concrete mixing station, which adopts a set of additive supply pumps. A batching pipeline and a circulation pipeline are respectively arranged through a tee and switched between the two pipelines through a valve. Only one pump is needed to supply additives for the mixing station production, and the circulation of additives can be realized to prevent precipitation. The utility model has the advantages of simple structure, low cost, high reliability and convenient maintenance. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 The utility model is a schematic diagram of the structure of a liquid additive circulation and anti-sedimentation system.

[0017] in:

[0018] Storage tank 1, pump 2, tee 3, pneumatic ball valve A4, manual ball valve A5, pneumatic ball valve B6, manual ball valve B7, manual ball valve 8. DETAILED DESCRIPTION

[0019] Example 1

[0020] See also Figure 1 The utility model relates to a liquid additive circulation and anti-sedimentation system, which comprises an additive storage tank 1 and a pump 2; a manual ball valve 8 is installed on the inlet pipeline of the pump 2 and is connected to the bottom of the storage tank 1, and the outlet pipeline is connected to the additive scale of the mixing station. The pump 2 transports the additive in the storage tank 1 to the additive scale for concrete production. A tee 3 is installed on the outlet pipeline of the pump 2, one way of the tee is connected to the additive scale through a pneumatic ball valve A4 and a manual ball valve A5 connected in series, and the other way is connected to the top of the storage tank 1 through a pneumatic ball valve B6 and a manual ball valve B7 connected in series.

[0021] When the mixing station needs additives for concrete production, the pneumatic ball valve B6 pump 2 is turned on a few minutes in advance. The opening time can be adjusted according to the control system setting. Pump 2 sucks the additives from the bottom of the storage tank 1 and transfers them to the pneumatic ball valve B6 and manual ball valve B7 through the three-way and then returns to the top of the storage tank 1. An internal convection cycle with bottom out and top in is formed inside the storage tank 1 to achieve the purpose of eliminating precipitation and keeping the additive uniform. When the additives have not precipitated after circulation and can be used normally for the mixing station, the pneumatic ball valve B6 can be closed and the pneumatic ball valve A4 can be opened. Pump 2 is turned on and off according to the normal batching function to deliver the additives to the additive scale as needed. During the production process of the mixing station, if the anti-precipitation function still needs to be turned on, the button to turn off the pneumatic ball valve A4 and start the pneumatic ball valve B6 on the control system interface can be clicked to turn on the circulation function. The valve opening of the manual ball valve A5 and the manual ball valve B7 can be adjusted to adjust the corresponding batching and circulation flow of pump 2 to adapt to different industrial controls. The operator can manually click the control system interface button to switch between the two functions of the pump, without having to go to the site to open and close the manual ball valve.

[0022] The utility model adopts a set of additive supply system. By arranging a circulation pipeline and a corresponding valve on the pipeline of the original additive supply system of the mixing station, the switching between the valves is used to realize that one pump can not only supply additives for the production of the mixing station, but also realize the circulation of additives to prevent precipitation. The utility model has a simple structure, low cost and simple operation.

[0023] Example 2

[0024] Embodiment 1 is further simplified by omitting the manual ball valve A5 and the manual ball valve B7, retaining the pneumatic ball valve A4 and the pneumatic ball valve B6, and setting the adjustment opening of the pneumatic valve in the control system. The operation process is consistent with that of Embodiment 1. The batching and circulation flow of the pump 2 are adjusted by adjusting the opening of the pneumatic ball valve A4 and the pneumatic ball valve B6 in the control system to adapt to different industrial controls.

[0025] Example 3

[0026] Embodiment 1 is further simplified by omitting the pneumatic ball valve A4 and the pneumatic ball valve B6, and retaining the manual ball valve A5 and the manual ball valve B7. Before the mixing station is put into production, the manual ball valve A5 can be manually closed, the manual ball valve B7 can be opened, and the pump 2 can be started to realize the circulation anti-sedimentation function. During normal production, the manual ball valve B7 is manually closed, the manual ball valve A5 is opened, and the pump 2 is started to normally transport additives for the mixing station production. By adjusting the valve opening of the manual ball valve A5 and the manual ball valve B7, the corresponding ingredients and circulation flow of the pump 2 can be adjusted to adapt to different industrial controls. However, after being simplified by this embodiment, it is necessary to manually go to the site to open and close the manual valve.

[0027] Example 4

[0028] The pneumatic ball valve A4 and the pneumatic ball valve B6 in Example 1 are replaced by electric valves, and the operation process and the effects achieved are consistent with those in Example 1.

[0029] Example 5

[0030] On the other hand, the utility model relates to a concrete mixing station, wherein the additive scale of the concrete mixing station is connected to any one of the liquid additive circulation and anti-sedimentation systems in the above-mentioned embodiments. The utility model sets a circulation pipeline and a corresponding valve on the pipeline of the original additive supply system of the mixing station, and uses the switching between the valves to realize that a pump can not only supply additives for the production of the mixing station, but also realize the circulation of additives to prevent precipitation, with a simple structure, low cost, high reliability and convenient maintenance.

[0031] In addition: It should be noted that the above specific implementation is only an optimization scheme of this patent. Any changes or improvements made by technicians in this field based on the above concept are within the scope of protection of this patent.

Claims

1. A liquid additive circulation and anti-sedimentation system, comprising an additive storage tank (1) and a pump (2); the inlet pipeline of the pump (2) is connected to the bottom of the storage tank (1), and the outlet pipeline is connected to the additive scale of the mixing station, and the pump (2) transports the additive in the storage tank (1) to the additive scale for concrete production, characterized in that: A tee (3) is installed on the outlet pipeline of the pump (2), one of which is connected to the additive scale through a ball valve A, and the other is connected to the top of the storage tank (1) through a ball valve B.

2. The liquid additive circulation and anti-sedimentation system according to claim 1, characterized in that: A manual ball valve (8) is installed on the inlet pipeline of the pump (2).

3. The liquid additive circulation and anti-sedimentation system according to claim 1, characterized in that: The ball valve A is a pneumatic ball valve A (4) or a manual ball valve A (5).

4. The liquid additive circulation and anti-sedimentation system according to claim 1, characterized in that: The ball valve A comprises a pneumatic ball valve A (4) and a manual ball valve A (5) connected in series.

5. The liquid additive circulation and anti-sedimentation system according to claim 1, characterized in that: The ball valve B is a pneumatic ball valve B (6) or a manual ball valve B (7).

6. The liquid additive circulation and anti-sedimentation system according to claim 1, characterized in that: The ball valve B comprises a pneumatic ball valve B (6) and a manual ball valve B (7) connected in series.

7. A concrete mixing station, characterized in that: The additive scale of the concrete mixing station is connected to any one of the liquid additive circulation and anti-sedimentation systems of claims 1 to 6.

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