CN103527814B - Ore pulp whereabouts pulp automatic control reversal valve - Google Patents

Abstract

The invention discloses an automatic control reversing valve for pulp falling and discharging. In order to solve the problem that the existing pulp flow reversing valve is easy to block and requires a lot of maintenance, the automatic control reversing valve for the pulp falling and discharging includes a ceramic gate valve; a wear-resistant curved hose, the inlet of the hose is connected to the The discharge port of the gate valve is connected; a trousers lined with heavy-duty anti-corrosion nano-coating, the trousers arranged vertically has multiple branch pipes; a reversing mechanism, which drives the discharge port of the hose to swing and is placed above the corresponding branch. The reversing valve of the invention is easy to reversing, has no clogging, wear resistance, long service life and less maintenance.

Description

Automatic control reversing valve for pulp falling and discharging

technical field

The invention relates to the field of valves for controlling the flow direction of ore pulp, in particular to an automatic control reversing valve for the falling and discharging of ore pulp.

Background technique

The control of ore pulp flow is always a difficult problem for ore concentrators and smelters. Due to the high hardness of solid particles in the ore pulp, the control valve is easy to wear and needs to be replaced after a short period of time. The maintenance workload is heavy. At the same time, the solid particles in the slurry have a high density and different particle sizes. They are most likely to be blocked at the dead corner of the pipe flow. Especially when changing direction, even a compact three-way ball valve will always It is the existence of ore sand, which wears the spherical surface.

At present, there are wear-resistant rubber automatic switching valves with two inlets and one outlet in China. The side channel of the spare pump side of the rubber track ball is closed by using the slurry pressure of the pump. , The maintenance workload is reduced. However, for the downstream pulp valve with one inlet and two outlets, there are few better pulp reversing three-way valves with wear resistance and blockage resistance.

Contents of the invention

In order to overcome the problems that the existing pulp flow reversing valve is easy to block and requires a lot of maintenance, the present invention aims to provide an automatic control reversing valve for pulp falling and discharging. The reversing valve is free from clogging and wear-resistant.

In order to achieve the above object, the technical solution adopted in the present invention is:

An automatic control reversing valve for pulp falling and discharging, the structural features of which include:

a gate valve;

A curved hose, the inlet of the hose is connected with the outlet of the gate valve;

a trouser leg, the trouser leg arranged vertically has a plurality of branch pipes;

A reversing mechanism, the reversing mechanism drives the discharge port of the hose to swing and is placed above the corresponding branch pipe.

Thus, after the slurry enters the hose through the gate valve, the discharge port of the hose is swung to the top of the corresponding branch pipe through the reversing mechanism, and then enters the corresponding groove behind the valve through the corresponding branch pipe.

Following is the further improved technical scheme of the present invention:

As a specific structural form of the hose reversing, the reversing mechanism includes a quarter-stroke electric actuator, and the quarter-stroke electric actuator drives the hoop member holding the hoop on the hose to swing through a crank linkage mechanism.

The hose is preferably a wear-resistant rubber hose with good flexibility and easy reversing.

The gate valve is preferably an electric ceramic gate valve, and the electric ceramic gate valve plays the role of cutting off ore pulp or adjusting the amount of ore pulp.

As a specific structural form, the trouser leg has two branch pipes, and a partition is arranged between the two branch pipes. Thus, the outlets of the two branch pipes of the trousers are respectively placed in or above the grooves behind the corresponding valves.

In order to prevent the quarter-stroke electric actuator from being splashed with slurry, the quarter-stroke electric actuator is installed beside the trousers for easy maintenance.

In order to improve the service life of the trousers, the inner wall of the trousers is provided with a heavy-duty anti-corrosion nano-coating layer.

One side of the trousers is provided with another trousers, and the other trousers are connected with a manual push rod.

The diameter of the curved hose is such that the flow rate of the ore slurry in the pipe is below 1m/s. The flow rate of the slurry is to ensure that the flow rate of the slurry in the pipe is below 1m/s. More preferably, the diameter of the curved hose is such that the flow rate of the slurry in the pipe is below 0.5m/s, which can greatly increase the service life of the curved hose.

Compared with the prior art, the beneficial effect of the present invention is: the self-control reversing valve for pulp falling and discharging utilizes the flexibility of the free end of a wear-resistant rubber tube of a certain length, and is resistant to wear and tear when automatic reversing is realized in the way of falling pulp. No clogging, long service life, less maintenance, solves the problem of reversing.

The present invention will be further elaborated below in conjunction with the accompanying drawings and embodiments.

Description of drawings

Fig. 1 is a structural schematic diagram of an embodiment of the present invention.

In the picture

1-Gate valve; 2-Hose; 3-Angle stroke electric actuator; 4-Crank linkage mechanism;

5-Hoop piece; 6-Trouser; 7-Branch; 8-Valve rear groove.

detailed description

An automatic control reversing valve for slurry falling and discharging, as shown in Figure 1, uses a fast-fitting fixed end, a wear-resistant natural rubber tube with a certain length, and swings the position of the free end of the rubber tube by an electric angular stroke actuator to make it The different pipes facing the trouser leg of the outlet realize the outlet reversing of one pulp in and two out.

The ore slurry enters the electric ceramic gate valve 1, then enters the wear-resistant rubber tube 2, then enters the side branch pipe 7 of the trouser leg 6, and then enters the rear groove 8 of the valve. When the direction is to be reversed, the valve rear groove 8 sends a high-level signal to drive the angular stroke electric actuator 3 to rotate, and the free nozzle of the wear-resistant rubber tube 2 is driven to swing to the bottom of the trouser leg 6 through the crank linkage mechanism 4 rubber hose hoop 5. The limit stops at the rear of the branch pipe on the other side, and the pulp enters the tank 8 behind the valve on the other side. When the tank is filled with slurry to a high level, a reversing signal is sent to realize automatic reversing repeatedly. Among them, the trousers are lined with heavy-duty anti-corrosion nano-coatings, which are impact-resistant, wear-resistant, and non-adhesive, ensuring long-term use performance. Electric ceramic gate valve 1 for pulp feeding plays the role of cutting off ore pulp or adjusting the amount of ore pulp.

Specific implementation measures include:

1. This valve requires a space for installation with a height difference of about 2m.

2. Electric ceramic gate valve 1 is a mature valve product popularized in China.

3. Flange wear-resistant natural rubber pipe 2 has been produced in Yantai, Gongyi and other places, but it must be flexible to achieve a lower flow rate inner diameter, preferably less than 1m/s, and more preferably less than 0.51m/s, which can be With the small-angle bending of the rubber hose hoop 5, under the drive of the quarter-stroke electric actuator 4 through the connecting rod mechanism, the slurry discharge port of the rubber hose 2 is moved to the corresponding trouser leg position.

4. Quarter-turn electric actuator is a mature product. Due to the small load moment of this valve, medium and light-duty quarter-turn electric actuators (with limit position and intermediate position switches, and valve position analog output) are used. The actuator is installed next to the trousers (to avoid slurry splashing and easy to maintain), and the actuator crank is directly connected to the hoop crank through the connecting rod.

5. Hose hoop 5, (including the outgoing square shaft and crank) should be made of stainless steel.

6. The trousers should be lined with heavy-duty anti-corrosion nano-coatings to be wear-resistant, anti-sticking, and long-term use. The outside should be painted with anti-rust gray paint. The partitions in the trousers should have a certain height to ensure that only one trousers will be starched.

7. Start commutation signal, provided by external process command.

If a trouser leg is juxtaposed on the side again, and a manual push rod is added in a direction perpendicular to the action during the reversing, the bypass safety measure of the process flow can be realized.

The above-mentioned embodiments should be understood that these embodiments are only used to illustrate the present invention more clearly, and are not intended to limit the scope of the present invention. After reading the present invention, those skilled in the art will understand the various equivalent forms of the present invention All modifications fall within the scope defined by the appended claims of the present application.

Claims (5)

1. an ore pulp whereabouts pulp automatic control reversal valve, it is characterised in that include

One gate valve (1)；

One curved spout (2), the charging aperture of this flexible pipe (2) is connected with the discharging opening of described gate valve (1)；

One trouser legs (6), these trouser legs (6) being vertically arranged have many arms (7)；

One changement, this changement drives the discharging opening of described flexible pipe (2) to swing the top being placed in corresponding arm (7)；

Described flexible pipe (2) is abrasion-resistant rubber pipe, and described gate valve (1) is electric ceramic gate valve；Described trouser legs (6) inwall is provided with the most anti- Rotten nano paint layer；The pipe diameter size of described curved spout (2) makes flow rate of pulp in pipe be below 0.5m/s.

Ore pulp whereabouts the most according to claim 1 pulp automatic control reversal valve, it is characterised in that described changement includes one Angle distance electric executor (3), this angle distance electric executor (3) drives anchor ear at flexible pipe by a toggle (4) (2) the anchor ear part (5) on swings.

Ore pulp whereabouts the most according to claim 1 and 2 pulp automatic control reversal valve, it is characterised in that described trouser legs (6) have 23 arms (7), are provided with dividing plate between adjacent two arms (7).

Ore pulp whereabouts the most according to claim 2 pulp automatic control reversal valve, it is characterised in that the described angle electronic execution of stroke It is other that device (3) is arranged on trouser legs (6).

Ore pulp whereabouts the most according to claim 3 pulp automatic control reversal valve, it is characterised in that described trouser legs (6) side sets Having another trouser legs, these another trouser legs and a hand push rod are connected.