Anti-blocking spray head

Abstract

An anti-blocking sprayer relates to the field of industrial sprayers and comprises a sprayer body, a piston and an energy storage reset component. A water flow channel is arranged in a shell of the sprayer, one end of the channel is provided with a variable-caliber nozzle capable of being matched with a piston, thrust generated by an inner cavity of the shell along with pressure difference changes acts together with an energy storage reset assembly to enable the piston and a center shaft to move correspondingly, and therefore the sprayer can be automatically switched between a blockage clearing state and a normal spraying state in a working state and a stopping state. The purpose of automatically washing and removing impurities or particles when the nozzle starts to work and stops working is achieved, and the phenomenon that the nozzle is blocked by various impurities or particles and normal work of the nozzle is affected is avoided.

Description

TECHNICAL FIELD

[0001] The utility model relates to a spray head field especially relates to a prevent stifled spray head. BACKGROUND

[0002] The spray head is the main equipment of dust suppression, dust reduction and fire prevention and control means, and its implementation purpose is to spray the liquid material such as water flow or resistance agent to the working face or coal accumulation position after atomization. However, due to the humid underground environment, or the special situation of water flow recycling, impurities are easy to appear in the water flow, and due to the serious external dust, the spray head is easy to be blocked from inside to outside or from outside to inside during use or standby, which affects the normal spraying effect and production safety.

[0003] For the above problems, a self-cleaning anti-blocking spray head disclosed in Chinese patent CN203380026U can solve the above problems to some extent. However, the use of the device has obvious disadvantages, the biggest of which is poor atomization effect and poor dredging effect, that is, the water spray hole part of the spray head is in the form of a small hole, although the change of pressure difference can realize the dredging of the needle, but due to the setting form of the water spray hole, the atomization effect of the water flow is poor, and the spraying area is small; Especially the impurities with large particles 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. UTILITY MODEL CONTENT

[0004] The utility model aims at overcoming the defects of prior art, and provides a kind of anti-blocking spray head with simpler structure and better anti-blocking effect.

[0005] The device comprises a spray head body, a water inlet and a water outlet are arranged on the spray head body; the water inlet is used to connect external water source, and the water outlet is used to discharge sewage and spray water flow;

[0006] A piston is slidably arranged in the inner cavity of the spray head body, and an energy storage reset assembly is arranged between the piston and the backstop of the spray head body;

[0007] A middle shaft is arranged on the front of the piston, and a plunger head is arranged at the front end of the middle shaft;

[0008] The plunger head is arranged corresponding to the water outlet; water spray channels are uniformly arranged on the wall surface of the plunger head or the water outlet.

[0009] The effect realized by this is that in standby state, the spray head body is not under pressure, and the middle shaft part naturally extends outward under the action of the elasticity of the energy storage reset assembly; a large gap is formed between the water outlet and the limiting block at the front of the middle shaft, so as to avoid dust blockage.

[0010] When in use, water flows into the inner cavity of the nozzle body through the inlet. The pressure in the inner cavity of the nozzle body gradually increases. The piston moves backward under the influence of water pressure, pushing the energy storage and reset component. The limiting block part of the central axis gradually fits into the nozzle and forms a narrow gap between them, so that the water flow is atomized and sprayed out in a ring, forming an atomized spray with a very wide spray area.

[0011] During unblocking, the water pressure is reduced. As the water pressure inside the nozzle body decreases, the piston moves forward, and the limiting block on the central shaft gradually disengages from the nozzle, creating a larger gap between them. Impurities accumulated inside the nozzle body flow out through this larger gap, preventing the nozzle from becoming clogged.

[0012] The beneficial effects of this utility model are: This utility model solves a number of problems existing in the anti-clogging nozzles in the prior art. It has better atomization effect and better anti-clogging effect. It can also naturally discharge large-diameter blockages. Moreover, the discharge process runs automatically with the opening and closing of the nozzle, without the need for manual intervention. It has a lower maintenance frequency, better safety, and greater safety promotion value. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the external structure of an anti-clogging nozzle according to the present invention;

[0014] Figure 2 This is a schematic diagram of the spray state of an anti-clogging nozzle according to the present invention;

[0015] Figure 3 This is a structural schematic diagram of the unblocking state of an anti-clogging nozzle according to the present invention;

[0016] Figure 4 This is a schematic diagram of the implementation structure of Example 6;

[0017] Figure label:

[0018] 1- Nozzle body 11- Inlet 12- Rear baffle 13- Front baffle 2- Energy storage and reset assembly 21- Short spring 22- Long spring 3- Piston 4- Central shaft 41- Water passage groove 42- Plunger head 43- Variable diameter connecting section 5- Central shaft push rod 51- Push rod adjusting bolt

[0019] The realization of the purpose, functional features and advantages of this utility model will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0020] Reference Figure 1 , Figure 2 The present invention provides an anti-clogging nozzle, comprising a nozzle body 1, wherein the nozzle body 1 is provided with a water inlet 2 and a water outlet; the water inlet 2 is used to connect to an external water source, and the water outlet is used to discharge sewage and atomize and spray water.

[0021] A piston 3 is slidably disposed in the inner cavity of the nozzle body, and an energy storage and reset assembly 2 is disposed between the piston 3 and the rear baffle 12 of the nozzle body.

[0022] The piston 3 is provided with a central shaft 4 in front of it, and a plunger head 42 is provided at the front end of the central shaft 4;

[0023] The plunger head 42 is configured to correspond to the water nozzle; water spray channels are uniformly arrayed on the wall surface of the plunger head 42 or the water nozzle.

[0024] Furthermore, the plunger head 42 extends through the water spray nozzle, and the plunger head 42 is conical, circular, T-shaped, or other non-standard shapes; the water spray nozzle is configured to correspond to the shape of the plunger head, and water spray channels are arranged in a ring array on the outside of the plunger head at the front of the central shaft 4 or on the surface of the water spray nozzle.

[0025] Example 1, refer to the accompanying drawings in the specification. Figure 1 The nozzle body 1 is a three-way type, including a nozzle pipe section and a water inlet 2 pipe section; the rear part of the nozzle pipe section is enclosed by a rear baffle 12, and a front baffle 13 is provided at its front part, and the water nozzle is centrally located on the front baffle 13.

[0026] The inlet 2 pipe section is vertically arranged at the front of the nozzle pipe section, and the inner cavity of the inlet 2 pipe section and the nozzle pipe section are interconnected.

[0027] The "front" mentioned here refers to the direction of the water nozzle.

[0028] The effect achieved is to optimize the assembly structure and facilitate assembly.

[0029] In Example 2, the rear part of the nozzle pipe section is the energy storage and reset component encapsulation chamber, and the front part is the water flow chamber;

[0030] The energy storage and reset component 2 is configured with a variable diameter between its encapsulation chamber and the water flow chamber, with the inner diameter of the encapsulation chamber being larger than that of the water flow chamber, and the piston 3 is slidably disposed within the encapsulation chamber of the energy storage and reset component 2.

[0031] Furthermore, a seal is provided between the piston 3 and the encapsulation chamber of the energy storage and reset assembly 2.

[0032] Furthermore, the inlet pipe section is located above the water flow chamber and is interconnected with the water flow chamber.

[0033] The effect achieved is that the variable diameter setting between the encapsulation chamber and the water flow chamber of the energy storage and reset component 2 provides the piston 3 with the limit of stroke, and thus achieves the effect that the gap between the central shaft 4, that is, the plunger head 42 at its end, and the water nozzle is constrained by the stroke of the piston 3. In other words, in conjunction with the energy storage and reset component 2, the maximum and minimum gap between the plunger head 42 and the water nozzle can be controlled.

[0034] Meanwhile, the piston 3-based design enables dry and wet separation within the nozzle body 1, preventing water from entering the encapsulation chamber of the energy storage and reset component 2, thus avoiding corrosion of the energy storage and reset component 2 and ensuring its service life.

[0035] In embodiment 3, the central shaft 4 and the plunger head 42 are integrally formed;

[0036] Refer to the attached diagram in the instruction manual. Figure 3 and Figure 4 A water groove 41 is formed on the central shaft 4 near the plunger head 42 at the front part of the central shaft 4; or a variable diameter connecting section 43 is set at one end of the central shaft 4 near the water nozzle, wherein the outer diameter of the variable diameter connecting section 43 is smaller than the inner diameter of the upper bottom of the water nozzle.

[0037] This achieves the effect of ensuring water flow in the atomized state.

[0038] In Example 4, the energy storage and reset component 2 is a spring, consisting of two springs: a long spring 22 and a short spring 21. The long spring 22 is a weak spring, and the short spring 21 is a strong spring.

[0039] The effect achieved in this way is due to the gradual increase in pressure within the water flow chamber. When entering the spray state, the long spring 22 controls the first stage of the piston 3's retraction, and two springs simultaneously control the second stage of the piston 3's retraction. When leaving the spray state and entering the unblocking state, the two springs push the piston 3 forward for the first stage, and when the water pressure is extremely low, only the long spring 22 is needed to push the piston 3 forward for the second stage. This results in faster and more stable atomization.

[0040] Example 5, refer to the accompanying drawings in the specification. Figure 2 or Figure 3 A spring guide rod is centrally located behind the piston 3, and a spring storage groove is located in front of the rear baffle 12.

[0041] The front ends of the long spring 22 and the short spring 21 are sleeved on the spring guide rod, and the rear ends are set in the spring storage groove.

[0042] This achieves the effect of constraining the position of the spring.

[0043] Example 6, refer to the accompanying drawings in the specification.Figure 4 The rear baffle 12 is provided with a middle shaft top rod 5 screwed thereon, and the middle shaft top rod 5 is a screw rod.

[0044] The middle shaft top rod 5 is provided with a spring guide short rod, and an adjusting bolt 51 is screwed on the middle shaft top rod 5; the adjusting bolt 51 is arranged outside the rear baffle 12.

[0045] The effect achieved is that the limit position of the middle shaft 4 part retraction before use and during use can be adjusted, that is, the gap between the plunger head 42 and the water spraying opening is adjusted, and the spraying effect is controlled.

[0046] In the embodiment 7, a gas pressure balance hole is arranged on the spraying head body, and the gas pressure balance hole penetrates the energy storage reset assembly packaging chamber.

[0047] The effect achieved is that when the piston moves, the chamber between the piston and the rear baffle has gas pressure, the penetrating gas pressure balance hole makes the energy storage reset assembly packaging chamber communicate with the external gas pressure, and the smooth sliding of the piston is ensured.

[0048] The use principle of the utility model is as follows:

[0049] In the standby state, the spraying head body 1 is not under pressure, and the middle shaft 4 part is naturally stretched out under the action of the spring force; a large gap is formed between the water spraying opening and the plunger head 42 of the front part of the middle shaft 4, so that impurities are prevented from blocking.

[0050] When used, water flows into the cavity of the spraying head body 1 through the water inlet 2, the pressure in the cavity of the spraying head body 1 gradually increases, the piston 3 is gradually moved backward under the influence of the water pressure and first pushes the long spring 22, that is, the weak force spring, until the piston 3 contacts the short spring 21; along with the gradual increase of the water pressure, the piston 3 continues to move backward and synchronously pushes the long spring 22 and the short spring 21.

[0051] In the process, the plunger head 42 part of the middle shaft 4 gradually fits the water spraying opening, and the water spraying channel between the two is atomized and sprayed, forming atomized spraying with a very wide spraying surface.

[0052] When the external water source is closed or the water pressure decreases, the piston 3 moves forward under the action of the short spring 21; along with the gradual decrease of the water pressure, the pushing stroke of the short spring 21 ends, and the long spring 22 continues to push the piston 3 to move forward.

[0053] In the above process, the plunger head 42 part of the middle shaft 4 gradually separates from the water spraying opening, that is, a large gap is formed between the two again, and the impurities accumulated in the spraying head body 1 flow out through the large gap, so that the spraying head is prevented from being blocked.

[0054] The long and short springs 21 are arranged to adapt to different water pressures on site, avoid using a single spring, and avoid the situation that the piston 3 cannot be pushed to move or the piston 3 displacement forms a spray state for too long. That is, the long and short springs 21 cooperate to make the piston 3 displace backward more efficiently to form a spray under the condition that the water pressure in the water flow chamber gradually increases. When the water pressure is stable, a single spring that meets the water pressure can also be used to achieve the same use effect.

[0055] The basic principle and main features of the present application and the advantages of the present application are shown and described above. It is obvious for those skilled in the art that the present application is not limited to the details of the above exemplary embodiments, and the present application can be implemented in other specific forms without departing from the spirit or basic characteristics of the present application. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and therefore all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present application. Any reference signs in the claims should not be regarded as limiting and the claims.

[0056] In addition, it should be understood that although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A clogging-preventing spray head comprising a spray head body, the spray head body being provided with a water inlet and a water outlet, characterized in that: In the inner cavity of the nozzle body, a piston is slidably arranged, and an energy storage reset assembly is arranged between the piston and the backstop of the nozzle body; A middle shaft is arranged on the front face of the piston, and a plunger head is arranged on the front end of the middle shaft; The plunger head is arranged corresponding to the water outlet, and water channels are uniformly arranged on the wall surface of the plunger head or the water outlet.

2. A non-clogging spray head according to claim 1, wherein The plunger head penetrates the water outlet; The water outlet is shaped corresponding to the plunger head, and water channels are annularly arranged on the outer surface of the plunger head or the surface of the water outlet.

3. A non-clogging spray head according to claim 1, wherein The nozzle body is in the form of a tee joint, including a nozzle pipe segment and a water inlet pipe segment; the rear part of the nozzle pipe segment is sealed by a backstop, and the front part is provided with a front stopper, and the water outlet is arranged on the front stopper; The water inlet pipe segment is vertically arranged on the front part of the nozzle pipe segment, and the inner cavities of the water inlet pipe segment and the nozzle pipe segment are communicated; The water inlet pipe segment is arranged on the upper surface of the water flow chamber and communicates with the water flow chamber.

4. A non-clogging spray head according to claim 3, wherein The rear part of the inner cavity of the nozzle pipe segment is an energy storage reset assembly sealing chamber, and the front part is a water flow chamber; The energy storage reset assembly sealing chamber and the water flow chamber are arranged in different diameters, the inner diameter of the energy storage reset assembly sealing chamber is larger than that of the water flow chamber, and the piston is slidably arranged in the energy storage reset assembly sealing chamber.

5. A non-clogging spray head according to claim 1, wherein A seal is arranged between the piston and the energy storage reset assembly sealing chamber.

6. A non-clogging spray head according to claim 1, wherein The middle shaft and the plunger head are integrally arranged; A water passing groove is arranged on the middle shaft near the plunger head at the front part of the middle shaft, or a variable diameter connecting segment is arranged on the middle shaft near the water outlet, and the outer diameter of the variable diameter connecting segment is smaller than the inner diameter of the upper bottom of the water outlet.

7. A clog resistant spray head according to claim 1, wherein, The energy storage reset assembly is a spring, and the spring includes two long springs and two short springs; the long spring is a weak spring, and the short spring is a strong spring; A spring guide short rod is arranged on the rear face of the piston, and a spring storage groove is arranged on the front face of the backstop; The front end of the long spring and the short spring is sleeved on the spring guide rod, and the rear end is arranged in the spring storage groove.

8. A non-clogging spray head according to claim 1 wherein, The energy storage reset assembly is one or more of a spring, an air bag, an elastic diaphragm and a non-metallic elastic body.

9. A non-clogging spray head according to claim 1 wherein, A middle shaft top rod is screwed on the backstop, and the middle shaft top rod is a screw rod; The middle shaft top rod is arranged corresponding to the spring guide short rod, and an adjusting bolt is screwed on the middle shaft top rod; the adjusting bolt is arranged on the outside of the backstop.

10. A non-clogging spray head according to claim 1, wherein An air pressure balance hole is arranged on the nozzle body, and the air pressure balance hole penetrates the energy storage reset assembly sealing chamber.

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