Anti-blocking method for spray head

Abstract

An anti-blocking method for a nozzle relates to the field of industrial nozzles, and the anti-blocking nozzle comprises a nozzle shell, a piston and an energy storage reset assembly. A water flow channel is arranged in a nozzle shell, one end of the channel is provided with a variable-caliber nozzle capable of being matched with a piston, a diaphragm, a sealing piece or a tiny fit clearance is adopted in the shell to form pressure difference, thrust generated by the pressure difference and an energy storage reset assembly act together to enable the piston to move correspondingly, and therefore in the working state and the stopping state, the piston can be reset. The piston is automatically switched between the unblocking state and the normal spraying state, the purpose of automatically washing and removing impurities or particles when the spray head starts to work and stops working is achieved, and the situation that the normal work of the spray head is affected due to the fact that various impurities or particles block the spray head is avoided.

Description

Technical Field

[0001] The invention relates to the field of nozzle anti-blocking, and in particular to a nozzle anti-blocking method. Background Art

[0002] The nozzle is the main equipment for underground dust suppression, dust reduction, fire prevention and other prevention measures. Its implementation purpose is to spray water or liquid materials such as inhibitors into atomized form and spray them to the working face or coal accumulation locations through the nozzle. However, due to the humid underground environment or special circumstances such as water recycling, impurities are prone to appear in the water flow, and due to severe external dust, the nozzle is prone to blockage from the inside to the outside or from the outside to the inside during use or standby, which affects the normal spraying effect and affects production safety.

[0003] In view of the above problems, a self-cleaning trickle sewage nozzle disclosed in Chinese patent CN203380026U can solve the above problems to a certain extent. However, the disadvantages of using this device are also obvious. The biggest disadvantage is that it has poor atomization effect and poor dredging effect. That is, the water spray hole of the nozzle is in the form of a small hole. Although the needle can be dredged by changing the pressure difference, the water spray hole setting will lead to poor atomization effect of water flow and small spray surface; especially large particles of impurities cannot be discharged through the water spray hole position, that is, once the impurity particles are large, the water spray hole position will still be blocked. Summary of the invention

[0004] The purpose of the present invention is to overcome the shortcomings of the prior art and provide a nozzle anti-clogging method which is simple to implement, has a wide range of applications, has a good nozzle anti-clogging effect, and is particularly easy to use.

[0005] The nozzle anti-blocking method is to configure a piston in the inner cavity of the nozzle, and a plunger matching the nozzle is arranged at one end of the piston; A piston is arranged in the inner cavity of the nozzle, and a plunger matching the nozzle is arranged at one end of the piston; The piston is slidably arranged in the inner cavity of the nozzle, and can slide toward the other side of the inner cavity of the nozzle when one side is subjected to the pressure of the connected medium, so that the gap between the nozzle and the plunger becomes smaller until a spray is formed; an energy storage reset component that can act on the piston is arranged between the inner cavities of the nozzle, and can push the plunger to slide in the opposite direction of the medium pressure when the medium pressure is less than the pressure of the reset component, so as to push the piston to drive the plunger, so that the gap between the nozzle and the plunger becomes larger; The nozzle anti-blocking method of the present invention is that when the access medium initially enters the nozzle cavity in a low-pressure state, the piston is supported by the energy storage reset component, and a large-diameter sewage discharge channel is formed between the plunger and the nozzle. The access medium is in a trickle state, driving the impurities accumulated in the nozzle to flow out naturally from the nozzle; When the medium enters the nozzle and the pressure in the nozzle cavity gradually increases to a high-pressure state, the medium high pressure acts on the piston to make it slide under pressure. The piston drives the plunger to adjust the gap between the nozzle and the plunger. The gap in the sewage channel becomes smaller until it is closed, forming a spray state.

[0006] The beneficial effects of the present invention are as follows: the present invention fills a gap in the prior art, realizes automatic anti-blocking of the nozzle with low cost and simple structure, the method has a wide range of applications, is not limited by the medium, is particularly suitable for use with gaseous and liquid media, has the advantage of good anti-blocking effect, and is also of great market promotion value. BRIEF DESCRIPTION OF THE DRAWINGS

[0007] Figure 1 It is a structural schematic diagram of a spraying state in Embodiment 1 of a nozzle anti-blocking method according to the present invention; Figure 2 It is a structural schematic diagram of the unblocking state in Embodiment 1 of a nozzle anti-blocking method according to the present invention; Figure 3 It is a structural schematic diagram of a spraying state in Embodiment 2 of a nozzle anti-blocking method according to the present invention; Figure 4 It is a structural schematic diagram of a dredging state in Embodiment 2 of a nozzle anti-clogging method according to the present invention; Reference numerals: 1-piston 11-sliding body 12-plunger 2-spring The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0008] Reference Figure 1 , Figure 2 The present invention provides a nozzle anti-blocking method, wherein a piston is arranged in the inner cavity of the nozzle, and a plunger matching the nozzle is arranged at one end of the piston; A piston is arranged in the inner cavity of the nozzle, and a plunger matching the nozzle is arranged at one end of the piston; The piston is slidably arranged in the inner cavity of the nozzle, and can slide toward the other side of the inner cavity of the nozzle when one side is subjected to the pressure of the connected medium, so that the gap between the nozzle and the plunger becomes smaller until a spray is formed; an energy storage reset component that can act on the piston is arranged between the inner cavities of the nozzle, and can push the plunger to slide in the opposite direction of the medium pressure when the medium pressure is less than the pressure of the reset component, so as to push the piston to drive the plunger, so that the gap between the nozzle and the plunger becomes larger; The nozzle anti-blocking method of the present invention is that when the access medium initially enters the nozzle cavity in a low-pressure state, the piston is supported by the energy storage reset component, and a large-diameter sewage discharge channel is formed between the plunger and the nozzle. The access medium is in a trickle state, driving the impurities accumulated in the nozzle to flow out naturally from the nozzle; When the medium enters the nozzle and the pressure in the nozzle cavity gradually increases to a high-pressure state, the medium high pressure acts on the piston to make it slide under pressure. The piston drives the plunger to adjust the gap between the nozzle and the plunger. The gap in the sewage channel becomes smaller until it is closed, forming a spray state.

[0009] Furthermore, the nozzle is provided with one or more; When there is only one nozzle, the nozzle cooperates with the plunger to discharge sewage or spray; When there are multiple nozzles, at least one nozzle cooperates with the plunger to discharge sewage, and spraying is performed by multiple nozzles.

[0010] Furthermore, the nozzle is a variable gap nozzle, and the plunger is arranged in a corresponding manner to the nozzle; and a water passage is arranged in an array on the nozzle annulus or the outside of the plunger.

[0011] The effect achieved thereby is an improved spraying effect.

[0012] Furthermore, the access medium is gaseous, liquid or a gas-liquid mixture.

[0013] Furthermore, the nozzle is provided with one or more water inlets.

[0014] The effect achieved in this way is that multiple media enter the nozzle simultaneously.

[0015] Furthermore, the piston comprises a piston rod and a sliding body, the piston rod and the sliding body are integrally connected, and a sealing or sealing joint surface is provided between the sliding body and the inner cavity of the nozzle.

[0016] Furthermore, the energy storage reset component is one or more of a spring, an air bag, an elastic diaphragm and a non-metallic elastomer, and the reset elastomer is encapsulated on the distal nozzle side of the sliding body.

[0017] The effect achieved in this way is that, based on the configuration of a seal or sealing joint surface between the sliding body and the inner cavity of the nozzle, the reset elastomer is encapsulated on the far nozzle side, which is equivalent to a non-contact circulating medium encapsulation, which can enhance the overall service life of the equipment.

[0018] Example 1. Refer to the accompanying drawings of the specification Figure 1 and Figure 2 : The nozzle is provided with a medium inlet and a nozzle; the medium inlet is used to connect the spraying medium, and the nozzle is used to spray the medium; A piston 1 is arranged in the inner cavity of the nozzle, and a sliding body 11 is arranged on the piston 1; the sliding body 11 is slidably arranged in the inner cavity of the nozzle, and a seal is arranged between the sliding body 11 and the inner cavity of the nozzle; A spring 2 is provided in the nozzle body between the sliding body 11 and the rear baffle of the nozzle; A plunger 12 is arranged in front of the piston 1. The plunger 12 is arranged corresponding to the nozzle. Medium passages are arranged in a uniform array on the wall of the plunger 12 or the nozzle.

[0019] When in use, the spray medium flows into the inner cavity of the nozzle through the medium inlet, the pressure in the inner cavity of the nozzle gradually increases, and the sliding body 11 gradually moves backward under the influence of the high pressure of the medium and compresses the spring 2; The plunger 12 of the piston 1 gradually fits the nozzle, and a narrow gap is formed between the two, so that the medium is sprayed out in a ring through the medium passage, forming a spray with a very wide spray surface; When unblocking, the medium pressure is reduced, the internal pressure of the nozzle is reduced, the spring 2 pushes the sliding body 11, the piston 1 moves forward, and drives its plunger 12 part to gradually separate from the nozzle, that is, a large gap is formed between the two, and the impurities accumulated in the nozzle body flow out through the large gap to avoid clogging of the nozzle.

[0020] Example 2, refer to the accompanying drawings of the specification Figure 3 and Figure 4 : The nozzle is provided with a medium inlet and a nozzle; the medium inlet is used to connect the spraying medium, and the nozzle is used to spray the medium; In the inner cavity of the nozzle, a piston 1 is slidably arranged, and a sliding body 11 is arranged on the piston 1; A spring 2 is provided in the nozzle between the sliding body 11 and the nozzle; A plunger 12 is arranged in front of the piston 1. The plunger 12 is arranged corresponding to the nozzle. Medium passages are arranged in a uniform array on the wall of the plunger 12 or the nozzle.

[0021] When in use, the spray medium flows into the inner cavity of the nozzle body through the medium inlet, and the pressure in the inner cavity of the nozzle body gradually increases. The sliding body 11 is gradually moved forward by the high pressure of the medium and compresses the spring 2. The plunger 12 of the piston 1 gradually fits the nozzle, and a narrow gap is formed between the two, so that the medium is sprayed out in a ring through the medium passage, forming a spray with a very wide spray surface; When unblocking, the water pressure is reduced, the water pressure inside the nozzle is reduced, the spring 2 pushes the sliding body 11, the sliding body 11 moves backward, and the plunger 12 of the piston 1 gradually separates from the nozzle, that is, a large gap is formed between the two, and the impurities accumulated in the nozzle body flow out through the large gap to avoid clogging of the nozzle.

[0022] The above shows and describes the basic principles and main features of the present invention and the advantages of the present invention. It is obvious to those skilled in the art that the present invention is not limited to the details of the above exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic features of the present invention. Therefore, no matter from which point of view, the embodiments should be regarded as exemplary and non-restrictive. The scope of the present invention is defined by the attached claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims are included in the present invention. Any figure mark in the claims should not be regarded as limiting the claims.

[0023] In addition, it should be understood that although the present specification is described in terms of implementation modes, not every implementation mode contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A method for preventing nozzle blockage, comprising: The nozzle anti-blocking method is to configure a piston in the inner cavity of the nozzle, and a plunger matching the nozzle is arranged at one end of the piston; The piston is slidably arranged in the inner cavity of the nozzle, and can slide toward the other side of the inner cavity of the nozzle when one side is subjected to the pressure of the connected medium, so that the gap between the nozzle and the plunger becomes smaller until a spray is formed; an energy storage reset component that can act on the piston is arranged between the inner cavities of the nozzle, and can push the plunger to slide in the opposite direction of the medium pressure when the medium pressure is less than the pressure of the reset component, so as to push the piston to drive the plunger, so that the gap between the nozzle and the plunger becomes larger; The nozzle anti-blocking method of the present invention is that when the access medium initially enters the nozzle cavity in a low-pressure state, the piston is supported by the energy storage reset component, and a large-diameter sewage discharge channel is formed between the plunger and the nozzle. The access medium is in a trickle state, driving the impurities accumulated in the nozzle to flow out naturally from the nozzle; When the medium enters the nozzle and the pressure in the nozzle cavity gradually increases to a high-pressure state, the medium high pressure acts on the piston to make it slide under pressure. The piston drives the plunger to adjust the gap between the nozzle and the plunger. The gap in the sewage channel becomes smaller until it is closed, forming a spray state.

2. A nozzle anti-blocking method according to claim 1, characterized in that: The nozzle is provided with one or more; When there is only one nozzle, the nozzle cooperates with the plunger to discharge sewage or spray; When there are multiple nozzles, at least one nozzle cooperates with the plunger to discharge sewage, and spraying is performed by multiple nozzles.

3. A nozzle anti-blocking method according to claim 1, characterized in that: The nozzle is a variable gap nozzle.

4. A nozzle anti-blocking method according to claim 1, characterized in that: The access medium is in gaseous state, liquid state or gas-liquid mixture.

5. A nozzle anti-blocking method according to claim 1, characterized in that: The nozzle is provided with one or more water inlets.

6. A nozzle anti-blocking method according to claim 1, characterized in that: The piston comprises a piston rod and a sliding body, the piston rod and the sliding body are integrally connected, and a sealing or sealing joint surface is provided between the sliding body and the inner cavity of the spray head.

7. A nozzle blocking prevention method according to claim 1, characterized in that: The energy storage reset component is one or more of a spring, an air bag, an elastic diaphragm and a non-metallic elastic body.

Images