Hammer head

Abstract

The utility model provides a hammer head. The hammer head comprises a connector, a hammer body, a plurality of outer ring sub-hammers, a plurality of inner ring sub-hammers and a slag discharging plate. The hammer body is installed on the connector. And the plurality of outer ring sub-hammers are arranged on the hammer body. The multiple inner ring sub hammers are all installed on the hammer body and surrounded by the multiple outer ring sub hammers. The deslagging plate is detachably installed at the end, away from the connector, of the hammer body and arranged on the outer ring sub-hammers and the inner ring sub-hammers in a sleeving mode, a plurality of outer ring deslagging grooves, a plurality of inner ring deslagging grooves and a connecting groove are formed in the side, back to the hammer body, of the deslagging plate, and the outer ring deslagging grooves and the outer ring sub-hammers are arranged in a one-to-one correspondence mode and communicate with the external space. The multiple inner ring slag discharging grooves and the multiple inner ring secondary hammers are arranged in a one-to-one correspondence mode and communicate with the connecting groove, and the connecting groove communicates with the external space. According to the hammer head, in the impact process, high-pressure gas passes through the connecting grooves, waste residues in the multiple inner ring residue discharging grooves are discharged to the outer space, the discharging speed of the waste residues close to the axis position is increased, and the residue discharging efficiency is high.

Description

Technical Field

[0001] The present application relates to the technical field of drilling equipment, and in particular to a hammer head. Background Art

[0002] Pneumatic down-the-hole hammer is a bottom-hole power tool that uses the energy of compressed air to generate continuous impact loads. Specifically, the compressed air drives the piston to reciprocate and strike the hammer head to transmit impact energy and high-frequency impact, and then drives the power head to achieve the dual effects of rotary impact. The broken materials at the bottom of the hole are discharged to the ground continuously and quickly through positive or reverse circulation, with high construction efficiency.

[0003] Existing pneumatic down-the-hole hammers primarily consist of a flow guide, drill pipe, hammer head, air compressor, and main working unit. The hammer head is often configured as a clustered down-the-hole hammer, meaning it is composed of multiple sub-hammers. To enhance the hammer's impact, the sub-hammers are typically evenly spaced around the hammer's axis, with some sub-hammers positioned near the hammer's axis. During drilling, the sub-hammers positioned near the hammer's axis produce debris, which is difficult to remove due to their proximity, resulting in poor slag removal efficiency. Utility Model Content

[0004] The purpose of the embodiments of the present application is to provide a hammer head to solve the technical problem of poor slag discharge efficiency in the prior art.

[0005] To achieve the above-mentioned purpose, the technical solution adopted in this application is to provide a hammer head, comprising:

[0006] Connector;

[0007] A hammer body, the hammer body being mounted on the connector;

[0008] A plurality of outer ring hammers, each of which is mounted on the hammer body;

[0009] A plurality of inner ring hammers, each of which is mounted on the hammer body and surrounded by a plurality of outer ring hammers;

[0010] A slag discharge plate is detachably mounted on one end of the hammer body away from the connecting head, and is sleeved on the plurality of outer ring hammers and the plurality of inner ring hammers. The slag discharge plate is provided with a plurality of outer ring slag discharge grooves, a plurality of inner ring slag discharge grooves and a connecting groove on the side facing away from the hammer body. The plurality of outer ring slag discharge grooves and the plurality of outer ring hammers are arranged in a one-to-one correspondence and are connected to the external space. The plurality of inner ring slag discharge grooves and the plurality of inner ring hammers are arranged in a one-to-one correspondence and are all connected to the connecting groove, and the connecting groove is connected to the external space.

[0011] Optionally, the connecting groove includes a central groove and multiple radial grooves, the central groove is connected to the multiple inner ring slag discharge grooves, and one end of the multiple radial grooves is connected to the central groove and the other end is connected to the external space.

[0012] Optionally, the radial groove is arranged to gradually expand from an end close to the central groove toward an end away from the central groove.

[0013] Optionally, the hammer body includes a mounting cover and a mounting plate, the mounting cover is mounted on the connecting head, and the mounting plate is mounted on the slag discharge plate and is located between the mounting cover and the slag discharge plate;

[0014] Wherein, the plurality of outer ring hammers and the plurality of inner ring hammers are all passed through the mounting plate and screwed to the mounting cover.

[0015] Optionally, the mounting cover includes a cover body, a plate body and a plurality of avoidance grooves, the cover body is arranged to pass through in the axial direction, the plate body is connected to one end of the cover body close to the connecting head, and the plurality of avoidance grooves are all opened on the cover body and are arranged one by one corresponding to the plurality of outer ring hammers.

[0016] Optionally, the hammer body further includes a plurality of protective tubes, each of which is held between the mounting plate and the plate body and is respectively sleeved on the plurality of outer ring hammers and the plurality of inner ring hammers;

[0017] The number of the protective tubes is equal to the sum of the number of the outer ring hammers and the number of the outer ring hammers.

[0018] Optionally, a plurality of first slag discharge grooves are provided on the outer periphery of the slag discharge plate;

[0019] A plurality of second slag discharge grooves are provided on the outer periphery of the mounting plate, and the plurality of second slag discharge grooves are arranged in a one-to-one correspondence with the plurality of first slag discharge grooves;

[0020] A plurality of third slag discharge grooves are provided on the outer periphery of the cover body, and the plurality of third slag discharge grooves and the plurality of second slag discharge grooves are arranged in one-to-one correspondence.

[0021] Optionally, the connector includes a connecting tube, a connecting plate, a receiving space, and an air inlet, wherein the connecting tube is mounted on the plate body, the connecting plate is mounted on an end of the connecting tube away from the plate body, and together with the connecting tube and the plate body, forms the receiving space, and the air inlet is opened on the connecting plate and communicates with the receiving space;

[0022] The plate body is provided with a plurality of through holes, and the plurality of through holes are respectively arranged in one-to-one correspondence with the plurality of outer ring hammers and the plurality of inner ring hammers, and the number of the through holes is equal to the sum of the number of the outer ring hammers and the number of the inner ring hammers.

[0023] Optionally, the connector further includes a transport pipe, which passes through the connecting plate, the plate body, the mounting plate and the slag discharge plate.

[0024] Optionally, the connector further includes a flow equalizer, which is mounted on the plate body and located in the accommodating space.

[0025] The beneficial effects of the hammer head provided by this application are:

[0026] During the impact process, the hammer head provided by this application can discharge the waste slag in multiple inner ring slag discharge grooves into the external space through high-pressure gas through the connecting groove. Compared with the related art, the discharge speed of the waste slag near the axis position is greatly improved, and the slag discharge efficiency is high. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the following briefly introduces the drawings required for use in the embodiments or descriptions of the prior art. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without any creative work.

[0028] Figure 1 A first-perspective stereoscopic image of a hammer head provided in an embodiment of the present application;

[0029] Figure 2 A second perspective stereoscopic image of the hammer head provided in an embodiment of the present application;

[0030] Figure 3 A three-dimensional diagram of a slag discharge plate of a hammer head provided in an embodiment of the present application;

[0031] Figure 4 A three-dimensional diagram of the internal structure of the hammer head provided in an embodiment of the present application.

[0032] Among them, the reference numerals in the figures are:

[0033] 100, connector; 110, connecting tube; 120, connecting plate; 130, accommodation space; 140, air inlet; 150, transport pipe;

[0034] 200, hammer body; 210, mounting cover; 211, cover body; 212, plate body; 213, avoidance groove; 214, third slag discharge groove; 215, through hole; 220, mounting plate; 230, protective tube; 240, second slag discharge groove;

[0035] 300, outer circle hammer;

[0036] 400, inner circle hammer;

[0037] 500, slag discharge plate; 510, outer ring slag discharge groove; 520, inner ring slag discharge groove; 530, connecting groove; 531, central groove; 532, radial groove; 540, first slag discharge groove. DETAILED DESCRIPTION

[0038] In order to make the technical problems, technical solutions and beneficial effects to be solved by this application more clearly understood, this application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain this application and are not intended to limit this application.

[0039] It should be noted that when an element is referred to as being “mounted on,” “fixed on,” or “disposed on” another element, it may be directly on the other element or indirectly on the other element. When an element is referred to as being “connected to” another element, it may be directly connected to the other element or indirectly connected to the other element.

[0040] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply 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 this application.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of the technical features being referred to. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features. Throughout the description of this application, "plurality" means two or more, unless otherwise specifically defined.

[0042] In this application, the term "and / or" describes the relationship between associated objects, indicating that three possible relationships exist. For example, A and / or B can represent: A exists alone, A and B exist simultaneously, and B exists alone. A and B can be singular or plural. The character " / " generally indicates that the associated objects are in an "or" relationship.

[0043] like Figures 1 to 4As shown, an embodiment of the present application provides a hammer head, comprising a connector 100, a hammer body 200, multiple outer ring hammers 300, multiple inner ring hammers 400, and a slag discharge plate 500. The hammer body 200 is mounted on the connector 100. The multiple outer ring hammers 300 are each mounted on the hammer body 200. The multiple inner ring hammers 400 are each mounted on the hammer body 200 and surrounded by the multiple outer ring hammers 300. The slag discharge plate 500 is detachably mounted on one end of the hammer body 200 away from the connecting head 100, and is sleeved on multiple outer ring hammers 300 and multiple inner ring hammers 400. The slag discharge plate 500 is provided with multiple outer ring slag discharge grooves 510, multiple inner ring slag discharge grooves 520 and connecting grooves 530 on the side facing away from the hammer body 200. The multiple outer ring slag discharge grooves 510 and the multiple outer ring hammers 300 are arranged in a one-to-one correspondence and are connected to the external space. The multiple inner ring slag discharge grooves 520 and the multiple inner ring hammers 400 are arranged in a one-to-one correspondence and are all connected to the connecting grooves 530. The connecting grooves 530 are connected to the external space.

[0044] It should be noted that in this embodiment, the number of outer ring hammers 300 is set to four as an example. Of course, in other embodiments, the number of outer ring hammers 300 can be set to two, three, five, or other numbers depending on actual application requirements, and this is not a limit here. In this embodiment, the number of inner ring hammers 400 is set to two as an example. Of course, in other embodiments, the number of inner ring hammers 400 can be set to three, four, five, or other numbers depending on actual application requirements, and this is not a limit here.

[0045] The operating principle of this embodiment is as follows: high-pressure gas enters through the connector 100. Under the action of this high-pressure gas, the outer and inner ring hammers 300 and 400 generate high-frequency impacts. The impact of these hammers produces a large amount of waste slag at the slag discharge plate 500. After driving the outer and inner ring hammers 300 and 400 to generate high-frequency impacts, the high-pressure gas overflows from the outer and inner ring hammers 300 and 400. Under the action of the high-pressure gas escaping from the outer ring hammer 300, the waste slag in the outer ring slag discharge trough 510 is discharged to the outside space along with the high-pressure gas and enters the drill pipe. Under the action of the high-pressure gas escaping from the inner ring hammer 400, the waste slag in the inner ring slag discharge trough 520 is discharged through the connecting groove 530 to the outside space and enters the drill pipe.

[0046] During the impact process, the hammer head provided by this application can discharge the waste slag in the multiple inner ring slag discharge grooves 520 to the external space through the high-pressure gas through the connecting groove 530. Compared with the related art, the discharge speed of the waste slag near the axis position is greatly improved, and the slag discharge efficiency is high.

[0047] In one embodiment of the present application, see Figures 1 to 4The connecting groove 530 includes a central groove 531 and multiple radial grooves 532. The central groove 531 is connected to multiple inner ring slag discharge grooves 520. One end of the multiple radial grooves 532 is connected to the central groove 531, and the other end is connected to the external space.

[0048] It should be noted that in this embodiment, the number of radial grooves 532 is set to three as an example. In other embodiments, the number of radial grooves 532 can also be set to two, four, five, etc. according to actual application requirements, and this is not limited to any number.

[0049] With this arrangement, the central groove 531 communicates with the multiple inner ring slag discharge grooves 520. During the impact process, the waste residue in the multiple inner ring slag discharge grooves 520 enters the central groove 531 under the action of high-pressure gas. The waste residue in the central groove 531 can be discharged to the outside space through the multiple radial grooves 532, greatly improving the slag discharge efficiency compared to related technologies.

[0050] In one embodiment of this application, please refer to Figures 1 to 4 The radial groove 532 is gradually expanded from an end close to the central groove 531 toward an end away from the central groove 531 .

[0051] Such an arrangement can avoid the waste residue from clogging the radial groove 532 , facilitates the waste residue to be quickly discharged from the radial groove 532 , and also helps to improve the slag discharge efficiency.

[0052] In one embodiment of the present application, see Figures 1 to 4 The hammer body 200 includes a mounting cover 210 and a mounting plate 220. The mounting cover 210 is mounted on the connector 100, and the mounting plate 220 is mounted on the slag discharge plate 500 and is located between the mounting cover 210 and the slag discharge plate 500. The plurality of outer ring hammers 300 and the plurality of inner ring hammers 400 are all installed on the mounting plate 220 and screwed to the mounting cover 210.

[0053] With this arrangement, during assembly, the mounting cover 210 secures the outer ring hammer 300 at its end near the connector 100 and the inner ring hammer 400 at its end near the connector 100; the mounting plate 220 secures the outer ring hammer 300 at its end away from the connector 100 and the inner ring hammer 400 at its end away from the connector 100. In summary, the mounting cover 210 and mounting plate 220 effectively secure the outer ring hammer 300 and the inner ring hammer 400, thereby improving the stability of the outer ring hammer 300 and the inner ring hammer 400 during impact.

[0054] In one embodiment of the present application, see Figures 1 to 4The mounting cover 210 includes a cover body 211, a plate body 212 and a plurality of avoidance grooves 213. The cover body 211 is arranged to pass through in the axial direction. The plate body 212 is connected to one end of the cover body 211 close to the connector 100. The plurality of avoidance grooves 213 are all opened in the cover body 211 and are arranged one by one corresponding to the plurality of outer ring hammers 300.

[0055] Specifically, because the outer ring slag discharge groove 510 communicates with the outside space, it is typically located near the outer periphery of the slag discharge plate 500. During assembly, the outer ring hammer 300 and the outer ring slag discharge groove 510 are disposed in a one-to-one correspondence. Consequently, the outer ring hammer 300 is typically located near the outer periphery of the mounting cover 210, which can easily interfere with the mounting cover 210, preventing assembly from being completed.

[0056] It should be noted that the plurality of avoidance grooves 213 and the plurality of outer ring hammers 300 are provided in a one-to-one correspondence, so the number of the avoidance grooves 213 and the number of the outer ring hammers 300 are always equal.

[0057] With such arrangement, during the assembly process, the plurality of outer ring hammers 300 can be avoided by the plurality of avoidance grooves 213, thereby preventing interference between the cover body 211 and the outer ring hammers 300, which may result in the outer ring hammers 300 being unable to enter the cover body 211, thereby facilitating assembly.

[0058] In one embodiment of this application, please refer to Figures 1 to 4 The hammer body 200 further includes a plurality of protective tubes 230 , each of which is held between the mounting plate 220 and the plate body 212 and respectively sleeved over the plurality of outer ring hammers 300 and the plurality of inner ring hammers 400 . The number of protective tubes 230 is equal to the sum of the number of outer ring hammers 300 and the number of inner ring hammers 400 .

[0059] Such a configuration can prevent waste residue from entering the cover body 211 and directly contacting the outer ring hammer 300 and the inner ring hammer 400 through multiple protective tubes 230, which can effectively protect the outer ring hammer 300 and the inner ring hammer 400 and help to increase the service life of the outer ring hammer 300 and the inner ring hammer 400.

[0060] In one embodiment of the present application, see Figures 1 to 4 The outer periphery of the slag discharge plate 500 is provided with a plurality of first slag discharge grooves 540. The outer periphery of the mounting plate 220 is provided with a plurality of second slag discharge grooves 240, and the plurality of second slag discharge grooves 240 are provided in a one-to-one correspondence with the plurality of first slag discharge grooves 540. The outer periphery of the cover body 211 is provided with a plurality of third slag discharge grooves 214, and the plurality of third slag discharge grooves 214 are provided in a one-to-one correspondence with the plurality of second slag discharge grooves 240.

[0061] It should be noted that in this embodiment, the number of the first slag discharge troughs 540, the number of the second slag discharge troughs 240, and the number of the third slag discharge troughs 214 are all four. Of course, in other embodiments, the number of the first slag discharge troughs 540, the number of the second slag discharge troughs 240, and the number of the third slag discharge troughs 214 can also be two, three, five, or other numbers, depending on actual application requirements, and this is not a limitation.

[0062] With this arrangement, after the waste slag enters the external space under the action of high-pressure gas, it is transported to the drill pipe through the first slag discharge chute 540, the second slag discharge chute 240, and the third slag discharge chute 214. Compared to related technologies, the first slag discharge chute 540, the second slag discharge chute 240, and the third slag discharge chute 214 increase the waste slag transportation path and the waste slag transportation space, allowing the waste slag to reach the target transportation location more quickly, greatly improving the slag discharge efficiency.

[0063] In one embodiment of this application, please refer to Figures 1 to 4 The connector 100 includes a connecting tube 110, a connecting plate 120, a receiving space 130, and an air inlet 140. The connecting tube 110 is mounted on the plate body 212. The connecting plate 120 is mounted on the end of the connecting tube 110 away from the plate body 212 and encloses the connecting tube 110 and the plate body 212 to form the receiving space 130. The air inlet 140 is opened in the connecting plate 120 and communicates with the receiving space 130. The plate body 212 is provided with a plurality of through holes 215. The plurality of through holes 215 are respectively arranged in a one-to-one correspondence with the plurality of outer ring hammers 300 and the plurality of inner ring hammers 400. The number of through holes 215 is equal to the sum of the number of outer ring hammers 300 and the number of inner ring hammers 400.

[0064] The working principle of this embodiment is as follows: high-pressure gas enters the accommodating space 130 through the gas inlet 140. After entering the accommodating space 130, the high-pressure gas passes through the plurality of through holes 215 and reaches the outer ring hammer 300 and the inner ring hammer 400.

[0065] With this arrangement, high-pressure gas can be injected into the accommodation space 130 formed by the connecting tube 110, the connecting plate 120, and the plate body 212 through the air inlet 140. The high-pressure gas can be delivered to the plurality of through holes 215 through the accommodation space 130, thereby ensuring the normal operation of the plurality of outer ring hammers 300 and the plurality of inner ring hammers 400.

[0066] In one embodiment of this application, please refer to Figures 1 to 4 The connecting head 100 further includes a transport pipe 150 , which is passed through the connecting plate 120 , the plate body 212 , the mounting plate 220 and the slag discharge plate 500 .

[0067] This arrangement allows for the transport of liquid media during the impact process via transport pipe 150. This helps reduce the difficulty of drilling and slag removal. Furthermore, transport pipe 150 can also be used to transport concrete, enabling simultaneous drilling, slag removal, and pouring, effectively improving pile quality and preventing collapse.

[0068] In one embodiment of the present application, see Figures 1 to 4 The connector 100 further includes a current equalizer, which is mounted on the plate 212 and located in the accommodating space 130 .

[0069] With such an arrangement, during the impact process, the high-pressure gas can be distributed through the flow equalizer so that the high-pressure gas is evenly distributed to multiple through holes 215, ensuring that the high-pressure gas pressure at each outer ring hammer 300 and each inner ring hammer 400 remains consistent, thereby ensuring that the impact force generated by each outer ring hammer 300 and each inner ring hammer 400 remains roughly consistent, and the impact effect is good.

[0070] The one or more embodiments of this application are intended to encompass all such substitutions, modifications, and variations that fall within the broad scope of this application. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of one or more embodiments of this application should be included in the scope of protection of this application.

Claims

1. A hammer head, characterized in that: include: Connector (100); A hammer body (200), the hammer body (200) being mounted on the connector (100); A plurality of outer ring hammers (300), wherein the plurality of outer ring hammers (300) are all mounted on the hammer body (200); A plurality of inner ring hammers (400), wherein the plurality of inner ring hammers (400) are all mounted on the hammer body (200) and surrounded by the plurality of outer ring hammers (300); A slag discharge plate (500) is detachably mounted on one end of the hammer body (200) away from the connector (100), and is sleeved on the plurality of outer ring hammers (300) and the plurality of inner ring hammers (400). The slag discharge plate (500) is provided with a plurality of outer ring slag discharge grooves (510), a plurality of inner ring slag discharge grooves (520) and a connecting groove (530) on a side of the slag discharge plate (500) facing away from the hammer body (200). The plurality of outer ring slag discharge grooves (510) and the plurality of outer ring hammers (300) are arranged in a one-to-one correspondence and are communicated with an external space. The plurality of inner ring slag discharge grooves (520) and the plurality of inner ring hammers (400) are arranged in a one-to-one correspondence and are all communicated with the connecting groove (530). The connecting groove (530) is communicated with the external space.

2. The hammer head according to claim 1, characterized in that The connecting groove (530) includes a central groove (531) and a plurality of radial grooves (532), the central groove (531) is connected to the plurality of inner ring slag discharge grooves (520), and one end of each of the plurality of radial grooves (532) is connected to the central groove (531), and the other end is connected to the external space.

3. The hammer head according to claim 2, characterized in that The radial groove (532) is arranged to gradually expand from an end close to the central groove (531) toward an end away from the central groove (531).

4. The hammer head according to claim 1, wherein: The hammer body (200) comprises a mounting cover (210) and a mounting plate (220), wherein the mounting cover (210) is mounted on the connector (100), and the mounting plate (220) is mounted on the slag discharge plate (500) and is located between the mounting cover (210) and the slag discharge plate (500); The plurality of outer ring hammers (300) and the plurality of inner ring hammers (400) are all passed through the mounting plate (220) and screwed to the mounting cover (210).

5. The hammer head according to claim 4, characterized in that The mounting cover (210) comprises a cover body (211), a plate body (212) and a plurality of avoidance grooves (213); the cover body (211) is arranged to pass through in the axial direction; the plate body (212) is connected to one end of the cover body (211) close to the connector (100); the plurality of avoidance grooves (213) are all provided in the cover body (211) and are arranged in one-to-one correspondence with the plurality of outer ring hammers (300).

6. The hammer head according to claim 5, characterized in that The hammer body (200) further includes a plurality of protective tubes (230), each of the plurality of protective tubes (230) being held between the mounting plate (220) and the plate body (212), and being respectively sleeved on the plurality of outer ring hammers (300) and the plurality of inner ring hammers (400); The number of the protective tubes (230) is equal to the sum of the number of the outer ring hammers (300) and the number of the outer ring hammers (300).

7. The hammer head according to claim 5, characterized in that A plurality of first slag discharge grooves (540) are provided on the outer periphery of the slag discharge plate (500); A plurality of second slag discharge grooves (240) are provided on the outer periphery of the mounting plate (220), and the plurality of second slag discharge grooves (240) and the plurality of first slag discharge grooves (540) are arranged in a one-to-one correspondence; A plurality of third slag discharge grooves (214) are provided on the outer periphery of the cover body (211), and the plurality of third slag discharge grooves (214) and the plurality of second slag discharge grooves (240) are arranged in a one-to-one correspondence.

8. The hammer head according to claim 5, wherein: The connector (100) comprises a connecting tube (110), a connecting plate (120), a receiving space (130) and an air inlet (140); the connecting tube (110) is mounted on the plate body (212); the connecting plate (120) is mounted on an end of the connecting tube (110) away from the plate body (212), and is enclosed with the connecting tube (110) and the plate body (212) to form the receiving space (130); the air inlet (140) is opened on the connecting plate (120) and is in communication with the receiving space (130); The plate body (212) is provided with a plurality of through holes (215), and the plurality of through holes (215) are respectively arranged in a one-to-one correspondence with the plurality of outer ring hammers (300) and the plurality of inner ring hammers (400), and the number of the through holes (215) is equal to the sum of the number of the outer ring hammers (300) and the number of the inner ring hammers (400).

9. The hammer head according to claim 8, characterized in that The connecting head (100) further comprises a transport pipe (150), wherein the transport pipe (150) is provided through the connecting plate (120), the plate body (212), the mounting plate (220) and the slag discharge plate (500).

10. The hammer head according to claim 8, characterized in that The connector (100) further includes a flow equalizer, which is mounted on the plate body (212) and located in the accommodating space (130).

Images