Hydraulic impactor

Abstract

The invention relates to the field of drilling devices, in particular to a hydraulic impactor which comprises an outer cylinder body, a rear connector, a valve body and a filtering piece, one end of the rear connector is in threaded connection with the inner wall of the outer cylinder body, a water inlet is coaxially formed in the rear connector and penetrates through the rear connector, and the valve body is coaxially and fixedly connected to the inner wall of the outer cylinder body; an embedding groove is formed in the end, facing the rear connector, of the valve body, a mounting groove is coaxially formed in the inner wall of the water inlet, the mounting groove extends towards the end close to the valve body to penetrate through the rear connector, one end of the filter part is embedded in the embedding groove, the other end of the filter part is embedded in the mounting groove, and the valve body is provided with a water inlet channel which is arranged on the periphery of the embedding groove. A water passing gap is formed in the groove bottom of the mounting groove and communicates with the water inlet channel. Water enters from the water inlet, is filtered by the filter part, and then enters the water inlet channel, the caulking groove and the mounting groove through the water passing gap to limit the mounting of the filter part, so that the connection strength of the filter part is improved, the filter part is not easy to deform and damage, and the service life of the impactor is prolonged.

Description

Technical Field

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

[0002] The impactor is a fundamental piece of equipment used in drilling projects. It utilizes compressed air or drilling fluid as its motive force, generating a continuous impact load to complete drilling or crushing operations. Powered by drilling fluid, the impactor incorporates a hydraulic system consisting of hydraulic oil, a hydraulic pump, and a hydraulic cylinder. When external force is applied to the hydraulic pump, hydraulic oil is pumped into the cylinder. The pressure from the hydraulic oil causes the piston to move forward, generating the impact force.

[0003] When high-pressure liquid enters the impactor, it needs to be filtered first. The high-pressure liquid will impact the filter. The existing filter is unstable and easily deformed and damaged under long-term stress, which reduces the filtration quality. Sand and gravel entering the impactor will affect the service life of the impactor. Summary of the Invention

[0004] In order to extend the service life of the impactor, the present application provides a hydraulic impactor.

[0005] The hydraulic impactor provided in this application adopts the following technical solution: A hydraulic impactor comprises an outer cylinder body, a rear joint, a valve body and a filter element, one end of the rear joint being threadedly connected to the inner wall of the outer cylinder body, the rear joint being coaxially provided with a water inlet, the water inlet passing through the rear joint, the valve body being coaxially fixedly connected to the inner wall of the outer cylinder body, the end of the valve body facing the rear joint being provided with an embedding groove, the inner wall of the water inlet being coaxially provided with a mounting groove, the mounting groove extending toward the end close to the valve body to pass through the rear joint, one end of the filter element being embedded in the embedding groove, the other end of the filter element being embedded in the mounting groove, the valve body being provided with a water inlet channel, the water inlet channel being provided at the outer periphery of the embedding groove, the bottom of the mounting groove being provided with a water flow gap, the water flow gap being connected to the water inlet channel.

[0006] By adopting the above technical solution, water enters from the water inlet, is filtered through the filter element, and then enters the water inlet channel through the water gap. The embedded groove and the installation groove limit the installation of the filter element, thereby improving the connection strength of the filter element, making the filter element less likely to be deformed and damaged, and extending the service life of the impactor.

[0007] Preferably, the filter element includes a first filter seat, a second filter seat and a filter screen, the outer wall of the first filter seat is coaxially connected to the groove wall of the embedding groove, the outer wall of the second filter seat is coaxially connected to the groove bottom of the mounting groove, the first filter seat is coaxially provided with a first mounting port, the second filter seat is coaxially provided with a second mounting port, and the outer wall of the filter screen is fixedly connected to the inner wall of the first mounting port and the inner wall of the second mounting port.

[0008] By adopting the above technical solution, the first filter seat and the second filter seat improve the stability of the filter screen, making the filter screen less likely to be deformed and damaged, thereby extending the service life of the impactor.

[0009] Preferably, the filter element further comprises a reinforcement ring, which is arranged between the first filter seat and the second filter seat, and the reinforcement ring is sleeved on the outer wall of the filter screen.

[0010] By adopting the above technical solution, the reinforcing ring improves the structural strength of the filter screen, making the filter screen less likely to be deformed and damaged, thereby extending the service life of the impactor.

[0011] Preferably, a plurality of the reinforcement rings are provided, and the plurality of reinforcement rings are evenly spaced along the axis of the filter screen.

[0012] By adopting the above technical solution, multiple reinforcement rings further improve the structural strength of the filter screen, making the filter screen less likely to be deformed and damaged, thereby extending the service life of the impactor.

[0013] Preferably, it further comprises a gasket, one side of the gasket abuts against the bottom of the embedding groove, the other side of the gasket abuts against the filter element, and one end of the filter element facing away from the gasket abuts against the groove wall of the installation groove.

[0014] By adopting the above technical solution, the thickness of the gasket is adjusted so that the filter element is pressed tightly against the installation groove, thereby improving the stability of the filter element.

[0015] Preferably, it also includes an inner tube sleeve, a piston sleeve, an impact piston and a drill bit, the inner tube sleeve is arranged on the side of the valve body away from the rear joint, the inner tube sleeve is coaxially fixedly connected to the inner wall of the outer cylinder body, the piston sleeve is coaxially fixedly connected to the inner wall of the inner tube sleeve, the impact piston is slidably connected to the piston sleeve and the valve body, and the end of the impact piston away from the valve body is fixedly connected to the drill bit.

[0016] By adopting the above technical solution, the impact piston slides to drive the drill bit to impact the area to be drilled, and the piston bushing guides the impact piston, thereby improving the stability of the impact piston.

[0017] Preferably, it further comprises a front joint, wherein the front joint is threadedly connected to the inner wall of the outer cylinder body, and the drill bit is axially slidably connected to the inner wall of the front joint.

[0018] By adopting the above technical solution, the front joint guides the drill bit, thereby improving the stability of the drill bit.

[0019] Preferably, it also includes a retaining ring, which is arranged between the front joint and the piston bushing, and the retaining ring is coaxially fixedly connected to the inner wall of the outer cylinder body. The outer wall of the drill bit is provided with a limiting ring groove, and the retaining ring abuts the bottom of the limiting ring groove.

[0020] By adopting the above technical solution, the retaining ring makes it difficult for the drill bit to slip off the front joint, thereby limiting the sliding of the front joint.

[0021] In summary, this application includes at least one of the following beneficial technical effects: 1. After entering the water inlet, water is filtered by the filter element and then enters the water inlet channel through the water gap. The embedded groove and the installation groove limit the installation of the filter element, thereby improving the connection strength of the filter element, making it less likely to be deformed and damaged, and extending the service life of the impactor; 2. The reinforcement ring improves the structural strength of the filter, making it less likely to be deformed or damaged, thereby extending the service life of the impactor; 3. Adjust the thickness of the gasket to make the filter element fit tightly against the installation slot, thereby improving the stability of the filter element. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a cross-sectional view of a hydraulic impactor.

[0023] Figure 2 yes Figure 1 Enlarged view of point A in the middle.

[0024] Figure 3 yes Figure 1 Enlarged view of point B in the middle.

[0025] Figure 4 yes Figure 1 Enlarged view of point C in the middle.

[0026] Figure 5 This is a cross-sectional view of the hydraulic impactor, mainly showing the structure of Example 2 Figure 6 yes Figure 5 Enlarged view of point D in the middle.

[0027] Explanation of the reference numerals: 1. outer cylinder body; 2. front joint; 3. rear joint; 31. abutting ring; 32. water inlet; 321. mounting groove; 3211. groove; 322. water gap; 33. fixing groove; 4. valve body; 41. valve housing; 411. mounting channel; 412. water inlet channel; 413. first channel; 414. second channel; 415. liquid storage tank; 416. second chamber; 42. valve sleeve cover; 421. embedded groove; 43. reversing valve; 44. sliding valve; 5. gasket; 6. filter element; 61. first filter seat; 611. first mounting port; 612. positioning port; 62. second filter seat; 621. second mounting port ;622, limit opening;623, convex strip;624, avoidance groove;63, filter screen;64, reinforcement ring;641, threaded opening;65, connecting rod;651, reciprocating screw;7, inner tube sleeve;8, piston bushing;9, impact piston;91, first piston;92, second piston;93, pressure relief channel;10, drill bit;101, limit ring groove;11, retaining ring;12, cleaning ring;13, cleaning brush;14, control part;141, first gear;142, bearing;143, rotating column;144, second gear;145, impeller;15, warning part;151; distance sensor;152, controller;153, warning light. DETAILED DESCRIPTION

[0028] The following is combined with Figure 1-6 This application is described in further detail.

[0029] The embodiment of the present application discloses a hydraulic impactor.

[0030] Example 1 Reference Figure 1 and Figure 2 The hydraulic impactor includes an outer cylinder body 1, a front joint 2, a rear joint 3, a valve body 4, a gasket 5, a filter element 6, an inner pipe sleeve 7, a piston bushing 8, an impact piston 9, a drill bit 10 and a retaining ring 11.

[0031] The outer cylinder body 1 is through-connected at both ends. The front joint 2 is threadedly connected to the inner wall of one end of the outer cylinder body 1, and the rear joint 3 is threadedly connected to the inner wall of the other end of the outer cylinder body 1. An abutment ring 31 is coaxially fixedly connected to the outer wall of the rear joint 3. The abutment ring 31 abuts the end of the outer cylinder body 1 facing away from the front joint 2 and is used to limit the installation position of the rear joint 3. The rear joint 3 is coaxially provided with a water inlet 32, which passes through the rear joint 3. The inner wall of the water inlet 32 ​​is coaxially provided with a mounting groove 321. The mounting groove 321 extends toward the end near the front joint 2 and passes through the rear joint 3. The bottom of the mounting groove 321 is provided with a water gap 322, which extends toward the end near the front joint 2 and passes through the rear joint 3.

[0032] Reference Figure 1 and Figure 3The valve body 4 is arranged between the front joint 2 and the rear joint 3. The valve body 4 includes a valve housing 41, a valve sleeve cover 42, a reversing valve 43 and a sliding valve 44. The valve housing 41 is coaxially fixed to the inner wall of the outer cylinder 1. The valve housing 41 is coaxially provided with a mounting channel 411. The mounting channel 411 passes through the valve housing 41. An inlet channel 412 is provided at one end of the valve housing 41 facing the rear joint 3. The inlet channel 412 is arranged at the outer periphery of the mounting channel 411. The valve housing 41 is provided with a first channel 413 and a second channel 414. The first channel 413 is arranged on the side of the inlet channel 412 away from the rear joint 3. The first channel 413 is arranged at the outer periphery of the mounting channel 411. The first channel 413 passes through the valve housing 41. The first channel 413 is connected to the water inlet channel 412. The second channel 414 is connected to the water inlet channel 412 and the mounting channel 411.

[0033] Reference Figure 2 and Figure 3 The valve housing cover 42 is coaxially fixedly connected to the end of the valve housing 41 facing the rear connector 3. The valve housing cover 42 blocks the mounting channel 411. A bezel 421 is defined on the end of the valve housing 42 facing the rear connector 3. The bezel 421 is coaxially arranged with the rear connector 3. A gasket 5 is embedded in the bezel 421 and abuts the bottom of the bezel 421. The gasket 5 is configured as a water-swelling sheet. The reversing valve 43 is slidably connected to the inner wall of the mounting channel 411. A sliding valve 44 is disposed on the side of the reversing valve 43 away from the valve housing cover 42. The reversing valve 43 controls the flow of water between the water inlet channel 412 and either the first channel 413 or the second channel 414.

[0034] Reference Figure 2 The filter element 6 includes a first filter seat 61, a second filter seat 62, a filter screen 63, a reinforcement ring 64, and a connecting rod 65. The first filter seat 61 is embedded in the embedding groove 421. The diameter of the first filter seat 61 is equal to the diameter of the embedding groove 421. The second filter seat 62 is embedded in the mounting groove 321. The outer wall of the second filter seat 62 abuts the bottom of the mounting groove 321. The first filter seat 61 abuts the gasket 5, and the second filter seat 62 abuts the groove wall of the mounting groove 321 facing the valve sleeve cover 42. The first filter seat 61 is coaxially provided with a first mounting port 611, and the second filter seat 62 is coaxially provided with a second mounting port 621. The filter screen 63 is coaxially fixedly connected to the inner wall of the first mounting port 611 and the inner wall of the second mounting port 621.

[0035] A reinforcement ring 64 is disposed between the first filter seat 61 and the second filter seat 62. The reinforcement ring 64 is sleeved onto the outer wall of the filter screen 63. Two reinforcement rings 64 are provided, and the two reinforcement rings 64 are evenly spaced along the axis of the filter screen 63. A connecting rod 65 is fixedly connected to the first filter seat 61, the reinforcement ring 64, and the second filter seat 62.

[0036] Reference Figure 1 and Figure 3, the inner tube sleeve 7 is provided on the side of the valve body 4 away from the rear joint 3, the inner tube sleeve 7 is coaxially fixedly connected to the inner wall of the outer cylinder body 1, the piston sleeve 8 is provided away from the valve body 4, the piston sleeve 8 is coaxially fixedly connected to the inner wall of the inner tube sleeve 7, the impact piston 9 is provided in the inner tube sleeve 7, one end of the impact piston 9 is coaxially fixedly connected to the first piston 91, and the other end of the impact piston 9 is coaxially fixedly connected to the second piston 92. The diameters of the first piston 91 and the second piston 92 are both smaller than the diameter of the impact piston 9, and the first piston 91 is slidably connected On the piston sleeve 8, a liquid storage tank 415 is provided on the inner wall of the end of the mounting channel 411 facing away from the valve sleeve cover 42, the second piston 92 is slidably connected to the tank wall of the liquid storage tank 415, the impact piston 9 is coaxially provided with a pressure relief channel 93, the pressure relief channel 93 passes through the impact piston 9, the sliding valve 44 is slidably connected to the inner wall of the pressure relief channel 93, the second piston 92, the tank wall of the liquid storage tank 415 and the outer wall of the sliding valve 44 form a second chamber 416, the second chamber 416 is connected to the second channel 414, and is used to push the impact piston 9 to move.

[0037] After water enters from the water inlet 32, it is filtered through the filter element 6 and enters the water inlet channel 412. When the reversing valve 43 slides close to the valve sleeve cover 42, the water inlet channel 412 is connected to the first channel 413, and the front part of the impact piston 9 is moved toward the valve sleeve cover 42 by the action of high-pressure water. When the reversing valve 43 slides away from the valve sleeve cover 42, the water inlet channel 412 is connected to the second channel 414 and the second chamber 416. The second chamber 416 is filled with high-pressure water, and the impact piston 9 is further affected by the high-pressure water and moves away from the valve sleeve cover 42.

[0038] Reference Figure 1 and Figure 4 The end of the impact piston 9 facing away from the valve body 4 is fixedly connected to the drill bit 10, the drill bit 10 is slidably connected to the inner wall of the front joint 2, the retaining ring 11 is arranged between the front joint 2 and the piston bushing 8, the retaining ring 11 is coaxially fixedly connected to the inner wall of the outer cylinder body 1, the outer wall of the drill bit 10 is provided with a limiting ring groove 101, and the retaining ring 11 abuts the bottom of the limiting ring groove 101.

[0039] The implementation principle of Example 1 is as follows: a gasket 5 is installed in the embedding groove 421 so that the two ends of the filter element 6 abut against the gasket 5 and the groove wall of the installation groove 321. The embedding groove 421 and the installation groove 321 limit the filter element 6. The first filter seat 61, the second filter seat 62, the reinforcement ring 64 and the connecting rod 65 jointly improve the structural strength of the filter screen 63.

[0040] Example 2 Reference Figure 5 and Figure 6 The difference between this embodiment and embodiment 1 is that the hydraulic impactor further includes a cleaning ring 12, a cleaning brush 13, a control member 14 and a warning member 15.

[0041] Reference Figure 6A positioning opening 612 is provided at one end of the first filter seat 61 facing the second filter seat 62, a limiting opening 622 is provided at one end of the second filter seat 62 facing the first filter seat 61, and a threaded opening 641 is provided at the reinforcement ring 64. The positioning opening 612, the limiting opening 622 and the threaded opening 641 are all coaxially arranged, and the threaded opening 641 passes through the reinforcement ring 64. The connecting rod 65 includes two reciprocating screw rods 651, which are coaxially fixed and arranged. The reciprocating screw rods 651 are arranged in a one-to-one correspondence with the reinforcement ring 64. The reciprocating screw rods 651 are threadedly connected to the inner wall of the threaded opening 641. One reciprocating screw rod 651 is coaxially rotatably connected to the inner wall of the positioning opening 612, and the other reciprocating screw rod 651 is coaxially rotatably connected to the inner wall of the limit opening 622. The rotation of the reciprocating screw rod 651 causes the reinforcement ring 64 to slide back and forth along the axis of the filter screen 63, thereby improving the structural strength of the filter screen 63 and shaping the filter screen 63, reducing the probability of deformation of the filter screen 63, and extending the service life of the filter screen 63.

[0042] The cleaning ring 12 is coaxially fixedly connected to the two ends of the reinforcement ring 64, one end of the cleaning brush 13 is fixedly connected to the inner wall of the cleaning ring 12, and the other end of the cleaning brush 13 abuts the outer wall of the filter screen 63. There are multiple cleaning brushes 13, and the cleaning brushes 13 are arranged one-to-one corresponding to the cleaning ring 12. When the reinforcement ring 64 moves, the cleaning brush 13 cleans the impurities stuck in the filter screen 63, reducing the probability of clogging of the filter screen 63.

[0043] Reference Figure 5 and Figure 6 The control member 14 includes a first gear 141 , a bearing 142 , a rotating column 143 , a second gear 144 and an impeller 145 . The first gear 141 is coaxially fixedly connected to the outer wall of the reciprocating screw 651 near the positioning port 612, and a fixing groove 33 is provided at one end of the rear joint 3 facing the front joint 2. The fixing groove 33 is arranged on the outer periphery of the water gap 322, and the outer wall of the bearing 142 is coaxially fixedly connected to the groove wall of the fixing groove 33. The inner wall of the bearing 142 is coaxially fixedly connected to the outer wall of the rotating column 143. The axis of the rotating column 143 is parallel to the axis of the reciprocating screw 651, and the second gear 144 is coaxially fixedly connected to the outer wall of the rotating column 143. The first gear 141 is meshed with the second gear 144. The impeller 145 is arranged on the side of the second gear 144 away from the rear joint 3. The impeller 145 is arranged in the water inlet channel 412. The impeller 145 is coaxially fixedly connected to the outer wall of the rotating column 143. The impact of the water flow causes the impeller 145 to rotate, the rotating column 143 rotates, and the reciprocating screw 651 rotates.

[0044] Reference Figure 6The outer wall of the second filter seat 62 is fixedly connected with a convex strip 623, and the bottom of the mounting groove 321 is provided with a groove 3211, which extends toward one end close to the water gap 322. The groove 3211 is used for the convex strip 623 to be embedded, so that the second filter seat 62 and the rear joint 3 cannot rotate relative to each other, and the first gear 141 and the second gear 144 remain in a meshing state.

[0045] The warning component 15 includes a distance sensor 151, a controller 152 and a warning light 153. An avoidance groove 624 is provided at one end of the second filter seat 62 facing the reinforcement ring 64. The distance sensor 151 is fixedly embedded in the avoidance groove 624. The avoidance groove 624 protects the distance sensor 151. The controller 152 and the warning light 153 are both fixedly connected to the outer wall of the rear joint 3. The distance sensor 151 and the warning light 153 are both electrically connected to the controller 152. The distance sensor 151 is used to detect the distance from the second filter seat 62 to the reinforcement ring 64 and send the detection value to the controller 152. A timer is fixedly connected to the controller 152. The timer is used to calculate the duration of the detection value. If the detection value does not change for more than a preset time, the warning light 153 lights up to remind the operator to replace the filter 63.

[0046] The implementation principle of Example 2 is as follows: water flows through the water inlet channel 412, causing the impeller 145 to rotate, the rotating column 143 rotates to drive the second gear 144 to rotate, the first gear 141 rotates to cause the reciprocating screw 651 to rotate, the reinforcement ring 64 slides along the axial direction of the reciprocating screw 651, the cleaning brush 13 cleans the filter screen 63, the unreinforced ring 64 moves to clear obstacles, the reinforcement ring 64 shapes the filter screen 63, reduces the deformation of the filter screen 63, and extends the service life of the filter screen 63.

[0047] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A hydraulic impactor, characterized in that: The invention comprises an outer cylinder (1), a rear joint (3), a valve body (4) and a filter element (6), wherein one end of the rear joint (3) is threadedly connected to the inner wall of the outer cylinder (1), the rear joint (3) is coaxially provided with a water inlet (32), the water inlet (32) passes through the rear joint (3), the valve body (4) is coaxially fixedly connected to the inner wall of the outer cylinder (1), the end of the valve body (4) facing the rear joint (3) is provided with an embedding groove (421), and the inner wall of the water inlet (32) is coaxially provided with a mounting groove (321). The mounting groove (321) extends toward one end close to the valve body (4) and penetrates the rear joint (3). One end of the filter element (6) is embedded in the embedding groove (421), and the other end of the filter element (6) is embedded in the mounting groove (321). The valve body (4) is provided with a water inlet channel (412). The water inlet channel (412) is provided on the outer periphery of the embedding groove (421). A water gap (322) is provided at the bottom of the mounting groove (321), and the water gap (322) is communicated with the water inlet channel (412).

2. The hydraulic impactor according to claim 1, characterized in that: The filter element (6) comprises a first filter seat (61), a second filter seat (62) and a filter screen (63); the outer wall of the first filter seat (61) is coaxially connected to the groove wall of the embedding groove (421); the outer wall of the second filter seat (62) is coaxially connected to the groove bottom of the mounting groove (321); the first filter seat (61) is coaxially provided with a first mounting opening (611); the second filter seat (62) is coaxially provided with a second mounting opening (621); the outer wall of the filter screen (63) is fixedly connected to the inner wall of the first mounting opening (611) and the inner wall of the second mounting opening (621).

3. The hydraulic impactor according to claim 2, characterized in that: The filter element (6) further comprises a reinforcement ring (64), wherein the reinforcement ring (64) is arranged between the first filter seat (61) and the second filter seat (62), and the reinforcement ring (64) is sleeved on the outer wall of the filter screen (63).

4. The hydraulic impactor according to claim 3, characterized in that: A plurality of the reinforcement rings (64) are provided, and the plurality of reinforcement rings (64) are evenly spaced along the axis of the filter screen (63).

5. The hydraulic impactor according to claim 1, characterized in that: It also includes a gasket (5), one side of the gasket (5) abuts against the bottom of the embedding groove (421), the other side of the gasket (5) abuts against the filter element (6), and one end of the filter element (6) facing away from the gasket (5) abuts against the groove wall of the installation groove (321).

6. The hydraulic impactor according to claim 1, characterized in that: The invention also includes an inner tube sleeve (7), a piston bushing (8), an impact piston (9) and a drill bit (10), wherein the inner tube sleeve (7) is arranged on a side of the valve body (4) away from the rear joint (3), the inner tube sleeve (7) is coaxially fixedly connected to the inner wall of the outer cylinder body (1), the piston bushing (8) is coaxially fixedly connected to the inner wall of the inner tube sleeve (7), the impact piston (9) is slidably connected to the piston bushing (8) and the valve body (4), and the end of the impact piston (9) away from the valve body (4) is fixedly connected to the drill bit (10).

7. The hydraulic impactor according to claim 6, characterized in that: It also includes a front joint (2), the front joint (2) being threadedly connected to the inner wall of the outer cylinder body (1), and the drill bit (10) being axially slidably connected to the inner wall of the front joint (2).

8. The hydraulic impactor according to claim 7, characterized in that: The drill bit (10) further comprises a retaining ring (11), the retaining ring (11) being arranged between the front joint (2) and the piston bushing (8), the retaining ring (11) being coaxially fixedly connected to the inner wall of the outer cylinder body (1), the outer wall of the drill bit (10) being provided with a limiting ring groove (101), and the retaining ring (11) abutting against the bottom of the limiting ring groove (101).

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