Self-cleaning spray head with filtering function

Abstract

A self-cleaning spray head with a filtering function comprises a spray head body, a middle shaft is arranged in an inner cavity of the spray head body in a sliding mode, a spraying water channel is arranged in the middle shaft, and the position of the spraying water channel corresponds to a water spraying opening. A water pressure baffle is arranged on the middle shaft; a filtering ring is arranged in front of the water pressure baffle and in an inner cavity of the spray head body, and water passing narrow gaps are formed in the face, opposite to the water pressure baffle, of the filtering ring in a dense array mode; and an energy storage reset assembly is arranged between the water pressure baffle and the water injection nozzle and in the spray head body. The device has a filtering function on large-particle-size particles, prevents a water port from being blocked in a spraying state, and naturally discharges large-particle-size blockages in the process that the spraying state is finished and water pressure is reduced, particularly, the discharging process is automatically operated along with opening and closing of a spray head, manual active participation is not needed, the maintenance frequency is lower, the safety is better, and the service life of the device is prolonged. And the safety popularization value is higher.

Description

TECHNICAL FIELD

[0001] The utility model relates to a spray head field, especially with filter function's self -cleaning spray head. BACKGROUND

[0002] Spray head is the main equipment of downhole dust suppression, dust fall and fire prevention and control means, and its implementation purpose is to spray liquid material such as water flow or resistance agent to working face or coal accumulation position after atomization. However, due to the humid underground environment, or special circumstances such as 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 spray head with filtering function 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 achieve the function of the needle to dredge, 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 large 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

[0004] The utility model aims at overcoming the defects of prior art, providing a self-cleaning spray head with filtering function, which has better anti-blocking effect, stronger sewage function, especially can filter impurities during spraying to prevent the spray head from being blocked.

[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 for connecting an external water source, and the water outlet is used for atomizing and spraying water flow;

[0006] A middle shaft is slidably arranged in the inner cavity of the spray head body, a spraying water inlet is arranged on the middle shaft, the spraying water inlet is in communication with a spraying water channel, the spraying water channel is arranged in the middle shaft, and the arrangement position corresponds to the water outlet;

[0007] A water pressure baffle is arranged on the middle shaft;

[0008] A filter ring is arranged in the inner cavity of the spray head body in front of the water pressure baffle, a plurality of water passing gaps are densely arranged on the side of the filter ring opposite to the water pressure baffle;

[0009] An energy storage reset assembly is arranged between the middle shaft or the water pressure baffle and the spray head body.

[0010] The effect achieved is that in the standby state, the pressure in the nozzle body is zero, the middle shaft part is naturally retracted backward under the action of the elastic force of the energy storage reset assembly, and a large gap is formed between the water outlet and the limiting block of the front part of the middle shaft to avoid impurities from blocking;

[0011] In use, the water flows into the inner cavity of the nozzle body through the water inlet, the pressure in the inner cavity of the nozzle body gradually increases, the water pressure baffle is gradually moved to the water outlet direction and compresses the energy storage reset assembly under the influence of the water pressure, until the water pressure baffle is attached to the filter ring, and the water flow continues to flow into the front part of the inner cavity of the nozzle body through the gaps between the filter ring and the water pressure baffle, that is, the water flow gap, and is sprayed outwards through the spray water inlet, the spray water channel, that is, the internal water channel of the middle shaft;

[0012] In this process, the larger particle impurities cannot pass through the water flow gap and stay in the inner cavity of the nozzle body;

[0013] In the dredging process, the water pressure is reduced, the internal water pressure of the nozzle body is reduced, the water pressure baffle is moved backward under the action of the energy storage reset assembly, the water pressure baffle is separated from the filter ring, the end part of the middle shaft is also separated from the water outlet, and a large water flow gap is formed again in the inner cavity of the nozzle. The dust and rust and other solid particles accumulated in the nozzle body flow out through the large gap, avoiding the blockage of the nozzle.

[0014] The beneficial effects of the utility model are that the utility model solves the problems existing in the prior art, the atomization effect is adjustable, the anti-blocking effect is better, especially for large particle size particles, the filter function is provided, the water outlet is prevented from being blocked in the spraying state, and the large particle size blocking objects are naturally discharged in the process of reducing the water pressure after the spraying state is ended, especially the discharge process is automatically operated with the opening and closing of the nozzle, manual participation is not required, the maintenance frequency is lower, the safety is better, and the safety promotion value is higher. BRIEF DESCRIPTION OF DRAWINGS

[0015] Figure 1 is a spraying state schematic diagram of the self-cleaning nozzle with the filter function;

[0016] Figure 2 is a dredging state schematic diagram of the self-cleaning nozzle with the filter function;

[0017] Figure 3 is an appearance schematic diagram of the self-cleaning nozzle with the filter function;

[0018] Figure 4 is a structure schematic diagram of the filter ring;

[0019] REFERENCE SIGNS:

[0020] 1 - middle shaft 11 - plunger head 12 - spray inlet 13 - spray water channel 14 - water pressure baffle

[0021] 2 - spray head body 21 - first sealing plate 22 - second sealing plate 23 - water inlet 24 - water outlet

[0022] 3 - atomizing rod 4 - filter ring 5 - energy storage reset assembly

[0023] The realization, functional characteristics and advantages of the utility model will be further described with reference to the accompanying drawings in conjunction with embodiments. DETAILED DESCRIPTION

[0024] Referring to Figure 1 , Figure 2 , Figure 3 With Figure 4 , the utility model discloses a self-cleaning spray head with filtering function, including spray head body 2, the spray head body 2 is provided with water inlet 23 and water outlet 24, water inlet 23 is used for connecting external water source, and water outlet 24 is used for atomizing and spraying water flow;

[0025] In the spray head main part inner chamber, the middle shaft 1 is slidably arranged, the middle shaft 1 is provided with spray inlet 12, the spray inlet 12 is connected with spray water channel 13, the spray water channel 13 is arranged in the middle shaft 1, and the setting position corresponds water outlet 24;

[0026] The middle shaft 1 is provided with water pressure baffle 14;

[0027] In front of water pressure baffle 14, the spray head body 2 inner chamber is provided with filter ring 4, and the opposite side of filter ring 4 and water pressure baffle 14 is provided with water gap in dense array;

[0028] The middle shaft or water pressure baffle and spray head body are provided with energy storage reset assembly 5.

[0029] The effect realized is that in the standby state, the spray head body 2 is not under pressure, and the middle shaft 1 is naturally retracted backward under the action of the elasticity of energy storage reset assembly 5, a large gap is formed between water outlet 24 and the limiting block in the front part of the middle shaft 1, and impurities are prevented from being blocked.

[0030] Embodiment 1, referring to the description accompanying drawings Figure 1 With Figure 3 , the spray head body 2 is in the form of a circular tube, the rear part is water inlet 23, and the front part is provided with front baffle, and water outlet 24 is centrally arranged on the front baffle.

[0031] The effect realized is that the assembly structure is optimized, and the effect of facilitating assembly is achieved.

[0032] Embodiment 2, refer to the attached drawings Figure 1 With Figure 2 The front baffle is provided with an atomizing rod 3 which is a U-shaped curved rod, one end of which is inserted into the front baffle, and the other end corresponds to the spray water channel 13 of the middle shaft 1.

[0033] The effect achieved is that by controlling the gap between the atomizing rod 3 and the front end of the spray water channel 13, the high-pressure water flow collides with the atomizing rod 3 to form an atomizing spray with adjustable coverage.

[0034] Embodiment 3, the inner cavity of the spray head body 2 is fixedly provided with a first sealing plate 21, a filter ring 4 and a second sealing plate 22 from back to front, and the second sealing plate is provided with a water passing channel;

[0035] The front end of the middle shaft 1 is provided with a plunger head 11, and the plunger head 11 corresponds to the water outlet 24;

[0036] The plunger head 11 is arranged between the second sealing plate 22 and the water outlet 24, and the water pressure baffle 14 is arranged between the first sealing plate 21 and the filter ring 4.

[0037] The rear part of the middle shaft 1 is slidingly arranged in the sliding hole centrally formed in the first sealing plate 21 and the second sealing plate 22, and the middle shaft 1 is tightly fitted with the sliding hole on the two sealing plates.

[0038] Further, the spray water inlet 12 is formed in the middle shaft 1 between the water pressure baffle 14 and the plunger head 11.

[0039] Further, the energy storage reset component 5 is encapsulated between the water pressure baffle 14 and the second sealing plate 22.

[0040] The effect achieved is to constrain the movement of the middle shaft 1, so that it cooperates with the water pressure baffle 14 and the energy storage reset component 5 to form two water passing states, that is, a high-pressure water passing spray state and a low-pressure water passing slagging state.

[0041] Further, the energy storage reset component 5 is one or more of a spring, an air bag, an elastic diaphragm and a non-metallic elastic body.

[0042] Embodiment 4, the energy storage reset component is arranged at the front end, middle section or rear end of the piston or plunger.

[0043] The use principle of the utility model is:

[0044] In the standby state, the pressure in the nozzle body 2 is zero, and the middle shaft 1 is naturally retracted backward under the elastic force of the energy storage reset assembly 5; a large gap is formed between the water outlet 24 and the limiting block at the front of the middle shaft 1, so as to avoid dust blockage.

[0045] In use, water flows into the inner cavity of the nozzle body 2 through the water inlet 23, the pressure in the inner cavity of the nozzle body 2 gradually increases, the water pressure baffle 14 is gradually moved to the water outlet 24 direction and compresses the energy storage reset assembly 5 under the influence of water pressure, until the water pressure baffle 14 is attached to the filter ring 4, and the water flow continues to flow into the front part of the inner cavity of the nozzle body 2 through the water gap between the filter ring 4 and the water pressure baffle 14, that is, the water gap, and is sprayed outwards through the spray water inlet 12, the spray water channel 13, that is, through the internal water channel of the middle shaft 1.

[0046] In this process, larger particle impurities cannot pass through the water gap and stay in the inner cavity of the nozzle body 2.

[0047] When dredging, the water pressure is reduced, the internal water pressure of the nozzle body 2 is reduced, the water pressure baffle 14 is moved backward under the action of the energy storage reset assembly 5, the water pressure baffle 14 is separated from the filter ring 4, and the end part of the middle shaft 1 is also separated from the water outlet 24, so that a large water gap is formed in the inner cavity of the nozzle again. The dust and rust and other solid particles accumulated in the nozzle body 2 flow out through the large gap, so as to avoid the blockage of the nozzle.

[0048] The above shows and describes the basic principles and main features of the present application and the advantages of the present application. For those skilled in the art, it is obvious that the present application is not limited to the details of the above exemplary embodiments, and the present application can be realized 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.

[0049] In addition, it should be understood that although the present application is described in the form of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and 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 self-cleaning nozzle with a filtering function, comprising a nozzle body, wherein the nozzle body is provided with a water inlet and a water outlet, characterized in that: In the inner cavity of the spray head body, a middle shaft is slidably arranged, and a spray water inlet is arranged on the middle shaft and connected with a spray water channel penetrating through the spray water inlet, the spray water channel is arranged in the middle shaft and arranged at a position corresponding to the water outlet; The middle shaft is provided with a water pressure baffle; In front of the water pressure baffle, a filter ring is arranged in the inner cavity of the spray head body, and a plurality of water passing gaps are densely arranged on the side of the filter ring opposite to the water pressure baffle; The middle shaft or the water pressure baffle is provided with an energy storage reset component between the spray head body.

2. The self-cleaning showerhead with filtering function according to claim 1, characterized in that, The spray head body is in the form of a circular tube, the rear part is a water inlet, and the front part is encapsulated with a front baffle, and the water outlet is arranged in the middle of the front baffle; The front baffle is provided with an atomizing rod, the atomizing rod is a U-shaped curved rod, one end of the atomizing rod is arranged on the front baffle, and the other end of the atomizing rod corresponds to the spray water channel of the middle shaft.

3. The self-cleaning showerhead with filtering function according to claim 1, characterized in that, The inner cavity of the spray head body is fixedly provided with a first encapsulation plate, a filter ring and a second encapsulation plate from back to front, and the second encapsulation plate is provided with a water passing channel; The front end of the middle shaft is provided with a plunger head, and the plunger head corresponds to the water outlet; The plunger head is arranged between the second encapsulation plate and the water outlet, and the water pressure baffle is arranged between the first encapsulation plate and the filter ring. The rear part of the middle shaft is slidably arranged in a sliding hole arranged in the middle of the first encapsulation plate and the second encapsulation plate, and the middle shaft is tightly fitted with the sliding hole on the two encapsulation plates.

4. The self-cleaning showerhead with filtering function according to claim 1, characterized in that, The spray water inlet is arranged on the middle shaft between the water pressure baffle and the plunger head.

5. The self-cleaning showerhead with filtering function according to claim 1, characterized in that, The energy storage reset component is encapsulated between the water pressure baffle and the second encapsulation plate.

6. The self-cleaning showerhead with filtering function 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.

7. The self-cleaning showerhead with filtering function according to claim 1, characterized in that, The energy storage reset component is arranged at the front end, middle section or rear end of the piston or plunger.

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