CN204911873U - Automatic liquid spray device of pressure release protection - Google Patents

Abstract

The utility model discloses an automatic liquid spray device of pressure release protection belongs to the feed liquid interpolation device field among the feed processing, include interpolation fill, pump, a plurality of nozzle connected through seal for pipe joints, characterized by before the nozzle and link a pressure release back flow, is equipped with the relief valve on the pressure release back flow, the other end of pressure release back flow and add to fight and link to each other, the nozzle divide into reserve nozzle, nozzle commonly used, and nozzle commonly used is open state, and nozzle commonly used is controlled by the nozzle ooff valve, and reserve nozzle is the normal close nozzle, and reserve nozzle is controlled by the solenoid valve. The utility model discloses can prevent to stop up because of the nozzle, cause the pipeline in pressure increase suddenly, lead to the fact automatic liquid spray device of pressure release protection such as liquid leakage, can realize hierarchical pressure release, just can be at the pressure release volume of keeping the hydrojet simultaneously, assurance product quality.

Description

Liquid spray device for automatic pressure relief protection

technical field

The utility model relates to a liquid spray device for automatic pressure relief protection, in particular to a liquid spray device for automatic pressure relief protection in a mixer molasses adding system in a feed production line.

Background technique

In the existing feed processing technology, molasses or other liquid raw materials need to be pressurized by the pump and sprayed out through the nozzle, but the liquid may contain large particles of impurities, which are easy to block the nozzle, and once the nozzle is blocked, the A sudden increase in pressure will cause liquid leakage, which will damage the pump in severe cases, or cause the pipeline to burst due to overpressure. There are also some pipeline pressure relief devices in the prior art, but they cannot realize step-by-step pressure relief, and once the nozzle is blocked, it will affect the flow rate of the spray liquid sprayed into the mixer by the nozzle and affect the product quality.

Contents of the invention

The utility model provides a liquid spraying device that prevents the pressure in the pipeline from suddenly increasing due to nozzle blockage, causing liquid leakage and other automatic pressure relief protection. quality.

The utility model proposes a liquid spraying device for automatic pressure relief protection, which includes an adding bucket, a pump, and a plurality of nozzles that are sealed and connected through pipelines, and a pressure relief return pipe is connected in parallel before the nozzles. The other end of the pressure return pipe is connected with the adding bucket.

Preferably, a discharge valve is installed at the discharge port of the adding hopper; a pressure gauge is also installed on the pressure relief return pipe.

The nozzles are divided into spare nozzles and common nozzles, the common nozzles are normally open, the common nozzles are controlled by the nozzle switch valve, the spare nozzles are normally closed nozzles, and the spare nozzles are controlled by a solenoid valve, which is electrically connected to the pressure gauge ; When the common nozzle is blocked and the pressure in the pipeline increases to the set value, the pressure gauge sends a signal to the solenoid valve, and the solenoid valve controls the spare nozzle to open and spray liquid; the pressure gauge is an electric contact pressure gauge.

The spare nozzle connecting pipeline is connected in parallel with the commonly used nozzle connecting pipeline, and the solenoid valve is connected in parallel with the on-off valve; the spare nozzle and the commonly used nozzle are arranged at intervals on the top of the mixer.

The electric contact pressure gauge is electrically connected with the photoelectric alarm.

The set opening pressure of the spare nozzle is lower than or equal to the set opening pressure of the relief valve.

The beneficial effect of the utility model is: if the nozzle is blocked, when the common nozzle is blocked and the pressure in the pipeline increases to the set value, the electric contact pressure gauge will transmit the signal to the electromagnetic valve, and the electromagnetic valve controls the standby nozzle to open and spray liquid, so that The spray flow rate of the nozzle sprayed into the mixer is maintained at the original level to ensure the quality of the mixture; the connecting pipeline of the spare nozzle is connected in parallel with the connecting pipeline of the common nozzle, and the solenoid valve is connected in parallel with the switch valve, which can make both the spare nozzle and the common nozzle The flow and pressure of the spray liquid are uniform; the spare nozzles and the common nozzles are arranged in the mixing cylinder at intervals, that is, the spare nozzles, the common nozzles, the spare nozzles, etc. are installed in the same way, so that when the spare nozzles are activated, Spray the material liquid into the mixing cylinder; at the same time, the electric contact pressure gauge transmits the signal to the solenoid valve, and the photoelectric alarm automatically alarms, indicating that the common nozzle is blocked, reminding the workers to clean it; if the pressure in the pipeline continues to increase to the pressure relief valve If the set opening pressure is set, the pressure relief valve will automatically open to allow the molasses to flow back to the adding hopper to avoid liquid leakage, damage to the pump, or cause the pipeline to burst due to overpressure.

Description of drawings

Fig. 1 is the structural representation of the utility model;

The realization of the purpose of the utility model, functional features and advantages will be further described in conjunction with the embodiments and with reference to the accompanying drawings.

Reference signs: adding bucket 1, discharge valve 2, pump 3, nozzle switch valve 4, common nozzle 5A, spare nozzle 5B, mixer 6, electric contact pressure gauge 7, pressure relief valve 8, pressure relief return pipe 9, Photoelectric alarm 10, electromagnetic valve 11.

Detailed ways

Referring to Figure 1, this embodiment includes an adding bucket 1, a pump 3, and a plurality of nozzles that are sealed and connected by pipelines. Before the nozzles, a pressure relief return pipe 9 is connected in parallel, and a pressure relief valve 8 is installed on the pressure relief return pipe 9. The other end of return pipe 9 links to each other with adding 1 bucket. A discharge valve 2 is installed at the outlet of the adding hopper 1; a nozzle switch valve 4 is installed on the pipeline before the nozzle, and an electric contact pressure gauge 7 is also installed on the pressure relief return pipe 9. The nozzles are divided into spare nozzles 5B and common nozzles 5A. The common nozzles 5A are normally open, and the common nozzles are controlled by the nozzle switch valve 4. The spare nozzles 5B are normally closed nozzles. The spare nozzles 5B are controlled by the solenoid valve 11. The valve 11 is electrically connected with the electric contact pressure gauge 7; when the common nozzle 5A is blocked and the pressure in the pipeline increases to a set value, the electric contact pressure gauge 7 sends a signal to the solenoid valve 11, and the solenoid valve controls the standby nozzle 5B to open And spray liquid. The standby nozzle connecting pipeline is connected in parallel with the common nozzle connecting pipeline, and the solenoid valve 11 is connected in parallel with the nozzle switching valve 4; the spare nozzle 5B and the common nozzle 5A are arranged in the mixing cylinder at intervals. The electric contact pressure gauge 7 is electrically connected with the photoelectric alarm device 10 .

The set cracking pressure of the spare nozzle 5B is lower than or equal to the set cracking pressure of the pressure relief valve 8 .

The above are only preferred embodiments of the present utility model, and are not intended to limit the patent scope of the present utility model. All equivalent structural transformations made by using the description of the utility model and the contents of the accompanying drawings are directly or indirectly used in other related technologies. Fields are all included in the scope of patent protection of the utility model in the same way.

Claims (6)

1. A liquid spraying device for automatic pressure relief protection, comprising an adding bucket, a pump, and a plurality of nozzles sealed and connected by pipelines, characterized in that a pressure relief return pipe is connected in parallel before the nozzle, and a pressure relief return pipe is equipped with a pressure relief return pipe. Pressure valve, the other end of the pressure relief return pipe is connected with the adding bucket. 2. The liquid spraying device with automatic pressure relief protection according to claim 1, characterized in that, a discharge valve is installed at the discharge port of the adding hopper; a pressure gauge is also installed on the pressure relief return pipe. 3. The liquid spraying device for automatic pressure relief protection according to claim 2, wherein the nozzles are divided into spare nozzles and common nozzles, the common nozzles are normally open, the common nozzles are controlled by the nozzle switch valve, and the spare nozzles are It is a normally closed nozzle, and the spare nozzle is controlled by a solenoid valve, which is electrically connected to the pressure gauge; when the common nozzle is blocked and the pressure in the pipeline increases to the set value, the pressure gauge sends a signal to the solenoid valve, and the solenoid valve Control the standby nozzle to open and spray liquid; the pressure gauge is an electric contact pressure gauge. 4. The liquid spraying device for automatic pressure relief protection according to claim 3, characterized in that, the spare nozzle connecting pipeline is connected in parallel with the commonly used nozzle connecting pipeline, and the electromagnetic valve is connected in parallel with the on-off valve; the spare nozzle and the commonly used nozzle are arranged at intervals on top of mixer. 5. The liquid spraying device with automatic pressure relief protection according to claim 3, characterized in that the electric contact pressure gauge is electrically connected to the photoelectric alarm. 6. The liquid injection device with automatic pressure relief protection according to claim 3, characterized in that the set opening pressure of the spare nozzle is lower than or equal to the set opening pressure of the pressure relief valve.