Nozzle and spraying dust-settling cutting head

Abstract

The utility model relates to the technical field of mine dust falling, in particular to a spray nozzle and a spray dust falling cutting head, the spray nozzle comprises a shaft sleeve, a spray head, a water guide disc and a water guide column, the spray head is provided with a jet flow hole channel and a spray hole channel, the spray hole channel is a conical through hole, and the water guide disc is provided with a rotational flow hole channel and a direct flow hole channel. Two ends of the water guide column are respectively communicated with the direct-flow duct and the jet duct; the spraying and dust falling cutting head comprises a barrel hub, blades, cutting teeth and a nozzle, the cutting teeth are connected to the blades through cutting tooth seats, nozzle seats are arranged on the cutting tooth seats, the nozzle is arranged in the nozzle seats, and the nozzle seats comprise the front nozzle seat, the rear nozzle seat and the top nozzle seat. According to the utility model, the hole channels in different forms are arranged on the nozzle, so that two water outlet forms of spraying and jet flow are formed, and the requirements on cooling and dust removal in the cutting process can be simultaneously met; the plurality of nozzle seats are arranged at different positions of the cutting pick seat, and the nozzles face different directions, so that the spraying effect can be effectively optimized.

Description

Technical Field

[0001] The utility model relates to the technical field of mine dust reduction, in particular to a nozzle and a spray dust reduction cutting head. Background Art

[0002] The underground coal mining machine will not only produce a large amount of dust during mining operations, which is harmful to the human body, but also the high-speed rotation of the drum will cause the friction between the pick and the coal rock to generate high temperature, which will accelerate the failure of the pick, reduce production efficiency and cause economic losses. Therefore, it is necessary to set a reasonable and efficient spray dust reduction device on the drum. However, the existing coal mining machine drum nozzles are mostly installed on the blades, which cannot achieve all-round spraying and cannot achieve the ideal dust removal and cooling effect. Utility Model Content

[0003] The utility model aims to solve the above problems and provides a nozzle and a spray dust reduction cutting head, the technical solutions adopted by the utility model are as follows:

[0004] A nozzle comprises a shaft sleeve, a nozzle, a water guide plate and a water guide column, wherein the nozzle and the water guide plate are arranged in the shaft sleeve, the nozzle, the water guide plate and the shaft sleeve enclose a swirl chamber, the nozzle is provided with a jet channel and a spray channel passing through two end faces, the spray channel is a tapered through hole, the small end of the tapered through hole is connected to the swirl chamber, and the large end of the tapered through hole forms a spray, the water guide plate is provided with a swirl channel and a direct current channel passing through two end faces, the swirl channel is not parallel to the axis of the water guide plate, and the two ends of the water guide column are respectively connected to the direct current channel and the jet channel.

[0005] Based on the above solution, a sealing ring is arranged on the side of the nozzle close to the swirl chamber.

[0006] Preferably, there are multiple spray channels and swirl channels.

[0007] Preferably, the nozzle and the water guide plate are threadedly connected to the inner side of the sleeve.

[0008] A spray dust reduction cutting head comprises a barrel hub, blades, picks and the above-mentioned nozzle, wherein the blades are arranged on the circumferential surface of the barrel hub, the picks are connected to the blades through pick seats, a nozzle seat is arranged on the pick seat, the nozzle is arranged in the nozzle seat, and a flow channel connected to the nozzle and used for water to pass through is arranged on the pick seat.

[0009] Based on the above scheme, the nozzle seat includes a front nozzle seat, a rear nozzle seat and a top nozzle seat. The front nozzle seat is arranged on the front side of the bottom end of the pick seat, and the nozzle is directed upward. The rear nozzle seat is arranged on the rear side of the bottom end of the pick seat, and the nozzle is inclined backward. The top nozzle seat is arranged above the pick seat and the pick, and the nozzle is directed backward.

[0010] Based on the above solution, the angle between the axial direction of the nozzle in the front nozzle seat and the vertical direction is 20°-60°.

[0011] Preferably, the angle between the axial direction of the nozzle in the rear nozzle seat and the horizontal direction is 20°-60°, and the angle between the projection of the nozzle axis in the horizontal plane and the projection of the pick axis in the horizontal plane is -40°-40°.

[0012] Preferably, the angle between the axial direction of the nozzle in the top nozzle seat and the horizontal direction is 10°-50°, and the angle between the projection of the nozzle axis in the horizontal plane and the projection of the pick axis in the horizontal plane is -50°-50°.

[0013] Preferably, a wear-resistant particle coating is provided on the surface of the top nozzle seat.

[0014] The beneficial effects of the utility model are as follows: by arranging different forms of holes on the nozzle, two water outlet forms, spray and jet, are formed, which can simultaneously meet the needs of cooling and dust removal during the cutting process; multiple nozzle seats are arranged at different positions of the cutting tooth seat, and the nozzles are directed in different directions, which can effectively optimize the spray effect and improve the dust reduction and cooling efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 : A cross-sectional view of the nozzle structure of the utility model;

[0016] Figure 2 : Schematic diagram of the structure of the nozzle of the utility model;

[0017] Figure 3 : The utility model Figure 2 Middle AA section cutaway view;

[0018] Figure 4 : Schematic diagram of the structure of the water guide plate and the water guide column in Embodiment 2 of the present utility model;

[0019] Figure 5 : The utility model Figure 4 Middle BB section cutaway view;

[0020] Figure 6 : The utility model Figure 4 Middle CC section cutaway view;

[0021] Figure 7 : Schematic diagram of the structure of the water guide plate and the water guide column in Embodiment 3 of the present utility model;

[0022] Figure 8 : Schematic diagram of the structure of the water guide plate in Embodiment 3 of the present utility model;

[0023] Fig. 9 : The utility model Figure 8 Middle DD section cutaway view;

[0024] Fig.10 : Schematic diagram of the structure of the water guide plate and the water guide column in Embodiment 4 of the utility model;

[0025] Fig.11 : Schematic diagram of the structure of the water guide plate of Embodiment 4 of the utility model;

[0026] Fig.12 : The utility model Fig.11 Middle EE section cutaway view;

[0027] Fig.13 : Schematic diagram of the structure of the cutting head of the utility model;

[0028] Fig.14 : A lateral cross-sectional view of the front nozzle seat of the utility model;

[0029] Fig.15 : A lateral cross-sectional view of the rear nozzle seat of the utility model;

[0030] Fig.16 : Transverse cross-sectional view of the rear nozzle seat of the utility model;

[0031] Fig.17 : A side sectional view of the top nozzle seat of the utility model;

[0032] Fig.18 : Front view of the top nozzle seat of the utility model;

[0033] Fig.19 : Schematic diagram of the flow channel structure of the utility model;

[0034] Fig. 20 : Schematic diagram of particle coating of the utility model. DETAILED DESCRIPTION

[0035] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0036] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0037] In the description of the present utility model, it should be understood that the terms "center", "length", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first" and "second" are used for descriptive purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present utility model, unless otherwise specified, "multiple" means two or more.

[0038] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0039] Example 1

[0040] like Figures 1 to 3 As shown, a nozzle includes a sleeve 11, a nozzle 12, a water guide plate 14 and a water guide column 15, wherein the nozzle 12 and the water guide plate 14 are arranged in the sleeve 11 and fit with the inner side of the sleeve 11, the nozzle 12, the water guide plate 14 and the sleeve 11 enclose a swirl chamber 16, the nozzle 12 is provided with a jet channel 121 and a spray channel 122 passing through both end surfaces, the spray channel 122 is a tapered through hole, the small end of the tapered through hole is connected to the swirl chamber 16, and the large end of the tapered through hole forms a spray, the water guide plate 14 is provided with a swirl channel 141 and a direct current channel 142 passing through both end surfaces, the swirl channel 141 is not parallel to the axis of the water guide plate 14, and both ends of the water guide column 15 are connected to the direct current channel 142 and the jet channel 121 respectively, and the direct current channel 142 is coaxially arranged with the jet channel 121. The water flows in from one side of the water guide plate 14, and the water flows into the direct flow channel 142 and then ejects from the jet channel 121 through the water guide column 15, so as to cool the pick 25. The water flows into the swirl channel 141 and changes its angle in the swirl chamber 16, and then ejects in the form of mist through the spray channel 122, so as to reduce dust.

[0041] The nozzle 12 is provided with a sealing ring 13 on one side close to the swirl chamber 16 to enhance the sealing effect. Optionally, the nozzle 12 and the water guide plate 14 are threadedly connected to the inner side of the shaft sleeve 11 for easy installation.

[0042] like Figures 13 to 20 As shown, a spray dust reduction cutting head includes a barrel hub 21, blades 23, picks 25 and the above-mentioned nozzle 1, wherein the blades 23 are arranged on the circumference of the barrel hub 21, the picks 25 are connected to the blades 23 through the pick seat 24, the pick seat 24 is provided with a nozzle seat, the nozzle 1 is arranged in the nozzle seat, and the pick seat 24 is provided with a flow channel 35 which is connected with the nozzle 1 and is used for water to pass through. The nozzle seat includes a front nozzle seat 31, a rear nozzle seat 32 and a top nozzle seat 33, wherein the front nozzle seat 31 is arranged at the front side of the bottom end of the pick seat 24, and the direction of the nozzle 1 is upward, the rear nozzle seat 32 is arranged at the rear side of the bottom end of the pick seat 24, and the direction of the nozzle 1 is tilted backward, and the top nozzle seat 33 is arranged above the pick seat 24 and the pick 25, and the direction of the nozzle 1 is backward. By setting a plurality of nozzle seats, and the nozzles are oriented in different directions, the spray effect can be effectively optimized, and the dust reduction and cooling efficiency can be improved.

[0043] like Figures 14 to 18 As shown, the angle between the axis direction of the nozzle 1 in the front nozzle seat 31 and the vertical direction is 20°-60°, the angle between the axis direction of the nozzle 1 in the rear nozzle seat 32 and the horizontal direction is 20°-60°, the angle between the projection of the axis of the nozzle 1 in the horizontal plane and the projection of the axis of the pick 25 in the horizontal plane is -40°-40°, the angle between the axis direction of the nozzle 1 in the top nozzle seat 33 and the horizontal direction is 10°-50°, the angle between the projection of the axis of the nozzle 1 in the horizontal plane and the projection of the axis of the pick 25 in the horizontal plane is -50°-50°. Adjust the installation angle and orientation of each nozzle 1 according to actual needs to adapt it to the actual application scenario and improve the cooling and dust reduction effects.

[0044] like Fig. 20 As shown, since the surface of the top nozzle seat 33 is susceptible to friction, a wear-resistant particle coating 34 is provided on the surface of the top nozzle seat 33 to protect the top nozzle seat 33 .

[0045] Example 2

[0046] The improvement of this embodiment compared with the embodiment 1 is that there are multiple spray channels 122 and swirl channels 141, and the spray channels 122 are arranged outside the jet channels 121 along the circumferential direction, so as to achieve the effect of uniform spraying.

[0047] Example 3

[0048] The difference between this embodiment and embodiment 2 is that the jet channel 121 is located on one side of the spray channel 122 .

[0049] Example 4

[0050] The difference between this embodiment and the third embodiment is that the number of the swirl channel 141 and the number of the spray channel 122 are both one.

[0051] The present invention is described above by way of examples, but the present invention is not limited to the above specific embodiments, and any changes or modifications based on the present invention belong to the scope of protection required by the present invention.

Claims

1. A nozzle, characterized in that: The invention comprises a shaft sleeve (11), a nozzle (12), a water guide plate (14) and a water guide column (15), wherein the nozzle (12) and the water guide plate (14) are arranged in the shaft sleeve (11), and the nozzle (12), the water guide plate (14) and the shaft sleeve (11) enclose a swirl chamber (16), and the nozzle (12) is provided with a jet channel (121) and a spray channel (122) penetrating through two end surfaces, wherein the spray channel (122) is a tapered through hole, wherein the small end of the tapered through hole is connected to the swirl chamber (16), and the large end of the tapered through hole forms a spray, and the water guide plate (14) is provided with a swirl channel (141) and a direct flow channel (142) penetrating through two end surfaces, wherein the swirl channel (141) is not parallel to the axis of the water guide plate (14), and the two ends of the water guide column (15) are respectively connected to the direct flow channel (142) and the jet channel (121).

2. A nozzle according to claim 1, characterized in that: A sealing ring (13) is provided on the side of the nozzle (12) close to the swirl chamber (16).

3. A nozzle according to claim 1, characterized in that: The number of the spray channels (122) and the swirl channels (141) is plural.

4. A nozzle according to claim 1, characterized in that: The spray head (12) and the water guide plate (14) are threadedly connected to the inner side of the shaft sleeve (11).

5. A spray dust suppression cutting head, characterized in that: The invention comprises a barrel hub (21), blades (23), picks (25) and a nozzle (1) as claimed in any one of claims 1 to 4, wherein the blades (23) are arranged on the circumferential surface of the barrel hub (21), the picks (25) are connected to the blades (23) via pick seats (24), a nozzle seat is arranged on the pick seat (24), the nozzle (1) is arranged in the nozzle seat, and a flow channel (35) is arranged on the pick seat (24) and is connected to the nozzle (1) and is used for water to pass through.

6. A spray dust suppression cutting head according to claim 5, characterized in that: The nozzle seat comprises a front nozzle seat (31), a rear nozzle seat (32) and a top nozzle seat (33); the front nozzle seat (31) is arranged at the front side of the bottom end of the pick seat (24), and the nozzle (1) is directed upward; the rear nozzle seat (32) is arranged at the rear side of the bottom end of the pick seat (24), and the nozzle (1) is directed tilted backward; the top nozzle seat (33) is arranged above the pick seat (24) and the pick (25), and the nozzle (1) is directed backward.

7. A spray dust suppression cutting head according to claim 6, characterized in that: The angle between the axial direction of the nozzle (1) in the front nozzle seat (31) and the vertical direction is 20°-60°.

8. The spray dust suppression cutting head according to claim 6, characterized in that: The angle between the axis direction of the nozzle (1) in the rear nozzle seat (32) and the horizontal direction is 20°-60°, and the angle between the projection of the axis of the nozzle (1) in the horizontal plane and the projection of the axis of the pick (25) in the horizontal plane is -40°-40°.

9. The spray dust suppression cutting head according to claim 6, characterized in that: The angle between the axis direction of the nozzle (1) in the top nozzle seat (33) and the horizontal direction is 10°-50°, and the angle between the projection of the axis of the nozzle (1) in the horizontal plane and the projection of the axis of the pick (25) in the horizontal plane is -50°-50°.

10. The spray dust suppression cutting head according to claim 6, characterized in that: A wear-resistant particle coating (34) is provided on the surface of the top nozzle seat (33).

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