Drilling piston rod convenient to clean

Abstract

The utility model relates to the technical field of piston rods, and provides a well drilling piston rod convenient to clean, which comprises a rod body, a shell and a piston, the rod body is provided with a first annular blocking part, the shell and the piston are both sleeved on the rod body, the shell is provided with a liquid inlet, a liquid outlet and a through hole arranged along the axial direction, and the liquid inlet and the liquid outlet are both communicated with the through hole. One end of the shell abuts against the first annular blocking part, one end of the piston abuts against the other end of the shell, and the piston, the shell and the first annular blocking part form a liquid passing cavity. By means of the technical scheme, the problem that in the prior art, the rod body is easily blocked when cooling liquid passes through the rod body is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of piston rods, and in particular to a drilling piston rod which is easy to clean. Background Art

[0002] Mining is the technology and science of mining mineral resources from the earth's crust and surface. Mining in a broad sense also includes the mining of coal and oil. The mining industry is an important raw material industry. Metal ores are the main raw materials for the smelting industry, and non-metallic ores are important chemical raw materials and building materials. Drilling is required during the mining process. The existing drilling equipment is generally complex in structure and inconvenient to use. In particular, the drill rod lacks the downward pressure required by the drill rod during the drilling process, and a piston rod is required to provide pressure. Because the pressure required for drilling is relatively high, the piston rod used for drilling needs to be cooled. When the existing piston rod is in use, the coolant will pass through the inside of the rod body, and the coolant will have impurities, which will remain in the rod body. Therefore, when the rod body is blocked, it is difficult to clean and the rod body needs to be replaced. Therefore, we need a piston rod for drilling to solve the above technical problems. Utility Model Content

[0003] The utility model provides a drilling piston rod which is easy to clean, and solves the problem in the related art that the rod body is easily blocked when coolant passes through the rod body.

[0004] The technical solution of the utility model is as follows:

[0005] A drilling piston rod that is easy to clean, comprising:

[0006] A rod body, wherein the rod body has a first annular stopper,

[0007] The housing is sleeved on the rod body, the housing surface has a liquid inlet, a liquid outlet and a through hole along the axial direction, the liquid inlet and the liquid outlet are both connected to the through hole, one end of the housing is in contact with the first annular stopper,

[0008] The piston is sleeved on the rod body, one end of the piston is in contact with the other end of the shell, and the piston, the shell and the first annular blocking portion form a liquid passage cavity.

[0009] As a further technical solution, the housing has an annular groove, and the annular groove is located at one end of the housing close to the first annular stop portion; and further includes,

[0010] A first annular sealing ring is sleeved on the rod body and is located between the inner wall of the annular groove and the first annular stopper.

[0011] As a further technical solution, the rod body has a threaded portion, and the threaded portion is located at an end of the rod body away from the first annular stop portion; and further includes,

[0012] A nut having a threaded hole, wherein the threaded hole is threadably matched with the threaded portion, and one end of the nut is in contact with the other end of the piston.

[0013] As a further technical solution, it also includes:

[0014] A gasket is sleeved on the rod body and is located between the nut and the piston.

[0015] As a further technical solution, the piston has an inserting portion at one end close to the housing, the housing has an inserting slot, and the inserting portion extends into the inserting slot.

[0016] As a further technical solution, the plug-in groove is a strip groove, and there are a plurality of the plug-in parts and the plug-in grooves, wherein the plurality of the plug-in parts are distributed along the circumferential direction of the piston, and the plurality of the plug-in grooves are distributed along the circumferential direction of the shell.

[0017] The working principle and beneficial effects of the utility model are:

[0018] In order to solve the above technical problems, the utility model provides a drilling piston rod that is easy to clean, including a rod body, a shell and a piston. The rod body has a first annular stopper. The shell and the piston are both sleeved on the rod body. The shell has a liquid inlet, a liquid outlet and a through hole arranged along the axial direction. The liquid inlet and the liquid outlet are both connected to the through hole. One end of the shell abuts against the first annular stopper, and one end of the piston abuts against the other end of the shell. The piston, the shell and the first annular stopper form a liquid cavity. When working, the piston rod needs to be fed with coolant during use. The coolant enters the liquid cavity from the liquid inlet and is sent out from the liquid outlet.

[0019] Beneficial effect: By setting the liquid inlet and the liquid outlet, the coolant does not need to pass through the rod body, but directly passes through the shell. When cleaning is needed, the shell is directly disassembled. The piston and the shell are plugged in, and the shell and the rod body are abutted. The piston rod can be disassembled by turning the nut, which is convenient for cleaning the liquid cavity. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The preferred implementation modes will be described below in a clear and understandable manner with reference to the accompanying drawings to further illustrate the above-mentioned characteristics, technical features, advantages and implementation methods of the present utility model.

[0021] Figure 1 It is a schematic diagram of the structure of the utility model;

[0022] Figure 2 For this utility model Figure 1Schematic diagram of the local structure in the middle A direction;

[0023] Figure 3 For this utility model Figure 1 A partial enlarged view of point B in the middle;

[0024] Figure 4 This is a schematic diagram of the rod structure of the utility model;

[0025] Figure 5 This is a schematic diagram of the nut structure of the utility model;

[0026] In the figure: 1. rod body, 2. first annular blocking portion, 3. shell body, 4. liquid inlet, 5. liquid outlet, 6. through hole, 7. piston, 8. liquid cavity, 9. annular groove, 10. first annular sealing ring, 11. threaded portion, 12. nut, 13. threaded hole, 14. gasket, 15. plug-in portion, 16. plug-in groove. DETAILED DESCRIPTION

[0027] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the specific implementation methods of the utility model will be described below with reference to the accompanying drawings. Obviously, the accompanying drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings and other implementation methods can be obtained based on these drawings without creative work.

[0028] In order to simplify the drawings, only the parts related to the utility model are schematically shown in each figure, and they do not represent the actual structure of the product. In addition, in order to simplify the drawings and facilitate understanding, in some figures, only one of the parts with the same structure or function is schematically shown, or only one of them is marked. In this article, "one" not only means "only one", but also means "more than one", and "several" includes "two" and "more than two".

[0029] In this article, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in this utility model can be understood according to specific circumstances.

[0030] In addition, in the description of the present application, the terms "first", "second", etc. are only used to distinguish the description and cannot be understood as indicating or implying relative importance.

[0031] Example 1

[0032] Reference Figure 1~Figure 5 , which is the first embodiment of the utility model, proposes a drilling piston rod 7 that is easy to clean, including a rod body 1, the rod body 1 has a first annular stopper 2, the shell 3 is sleeved on the rod body 1, the surface of the shell 3 has a liquid inlet 4, a liquid outlet 5 and an axial through hole 6, the liquid inlet 4 and the liquid outlet 5 are both connected to the through hole 6, one end of the shell 3 is in contact with the first annular stopper 2, the piston 7 is sleeved on the rod body 1, one end of the piston 7 is in contact with the other end of the shell 3, and the piston 7, the shell 3 and the first annular stopper 2 form a liquid chamber 8.

[0033] In the present embodiment, in order to solve the above technical problems, a drilling piston rod 7 which is easy to clean is proposed, comprising a rod body 1, a shell 3 and a piston 7. The rod body 1 has a first annular stopper 2. The shell 3 and the piston 7 are both sleeved on the rod body 1. The shell 3 has a liquid inlet 4, a liquid outlet 5 and a through hole 6 arranged along the axial direction. The liquid inlet 4 and the liquid outlet 5 are both connected to the through hole 6. One end of the shell 3 abuts against the first annular stopper 2, and one end of the piston 7 abuts against the first annular stopper 2 at the other end of the shell 3. The piston 7, the shell 3 and the first annular stopper 2 form a liquid cavity 8. When working, the piston 7 rod needs to be fed with coolant during use. The coolant enters the liquid cavity 8 from the liquid inlet 4 and is sent out from the liquid outlet 5.

[0034] By setting the liquid inlet 4 and the liquid outlet 5, the coolant does not need to pass through the rod body 1, but directly passes through the shell 3. When cleaning is needed, the shell 3 is directly disassembled. The piston 7 and the shell 3 are plugged in, and the shell 3 and the rod body 1 are abutted. The piston 7 can be disassembled by rotating the nut 12, which is convenient for cleaning the liquid cavity 8.

[0035] Example 2

[0036] Compared with Example 1, further, the shell 3 has an annular groove 9, and the annular groove 9 is located at one end of the shell 3 close to the first annular stopper 2; it also includes a first annular sealing ring 10, which is sleeved on the rod body 1, and the first annular sealing ring 10 is located between the inner wall of the annular groove 9 and the first annular stopper 2.

[0037] In this embodiment, the shell 3 has an annular groove 9, which is located at one end of the shell 3 close to the first annular stopper 2, and also includes a first annular sealing ring 10. The first annular sealing ring 10 is sleeved on the rod body 1, and the first annular sealing ring 10 is located between the annular groove 9 and the first annular stopper 2. When the shell 3 is sleeved on the rod body 1, the end of the shell 3 abuts against the first annular stopper 2 on the rod body 1. The annular groove 9 can be provided to store the first annular sealing ring 10, and the first annular sealing ring 10 can seal the liquid cavity 8 to improve the sealing effect.

[0038] Example 3

[0039] Compared with the embodiment 1-2, the rod body 1 further comprises a threaded portion 11, the threaded portion 11 is located at one end of the rod body 1 away from the first annular stopper 2; and further comprises a nut 12, the nut 12 has a threaded hole 13, the threaded hole 13 is threadedly matched with the threaded portion 11, and one end of the nut 12 is in contact with the other end of the piston 7. A gasket 14 is sleeved on the rod body 1, and the gasket 14 is located between the nut 12 and the piston 7.

[0040] In this embodiment, the nut 12 is used to fasten the piston 7 to the other end of the housing 3, so that the other end of the housing 3 is pressed against the first annular stop 2 of the rod body 1, and the gasket 14 is used to pad between the piston 7 and the nut 12 to reduce the wear between the nut 12 and the piston 7 and improve stability.

[0041] Example 4

[0042] Compared with the embodiments 1-3, further, the piston 7 has a plug-in portion 15 at one end close to the housing 3, the housing 3 has a plug-in slot 16, and the plug-in portion 15 extends into the plug-in slot 16. The plug-in slot 16 is a strip-shaped slot, and there are a plurality of the plug-in portions 15 and the plug-in slot 16, and the plurality of the plug-in portions 15 are distributed along the circumferential direction of the piston 7, and the plurality of the plug-in slots 16 are distributed along the circumferential direction of the housing 3.

[0043] In this embodiment, the piston 7 and the housing 3 are fixed by means of the plug-in portion 15 and the plug-in groove 16. The plug-in portion 15 and the plug-in groove 16 can prevent the piston 7 and the housing 3 from relative rotation. By providing a plurality of plug-in grooves 16 and the plug-in portion 15, the piston 7 and the housing 3 can be fixed more stably, and the plug-in portion 15 is also easier to disassemble, so that the inside of the housing 3 can be cleaned conveniently.

[0044] It should be noted that the above embodiments are only used to illustrate the technical solution of the utility model rather than to limit it. Although the utility model has been described in detail with reference to the preferred embodiments, ordinary technicians in the field should understand that the technical solution of the utility model can be modified or replaced by equivalents without departing from the spirit and scope of the technical solution of the utility model, which should be included in the scope of the claims of the utility model.

Claims

1. A drilling piston rod that is easy to clean, characterized in that: include, A rod body (1), wherein the rod body (1) has a first annular stopper (2), A shell (3), the shell (3) being sleeved on the rod body (1), the shell (3) having a liquid inlet (4), a liquid outlet (5) and a through hole (6) along the axial direction, the liquid inlet (4) and the liquid outlet (5) both being in communication with the through hole (6), one end of the shell (3) being in contact with the first annular stopper (2), A piston (7), wherein the piston (7) is sleeved on the rod body (1), one end of the piston (7) is in contact with the other end of the housing (3), and the piston (7), the housing (3) and the first annular stopper (2) form a liquid passage chamber (8).

2. The easy-to-clean drilling piston rod according to claim 1, characterized in that: The housing (3) has an annular groove (9), and the annular groove (9) is located at one end of the housing (3) close to the first annular stop (2); and further comprises: A first annular sealing ring (10), the first annular sealing ring (10) is sleeved on the rod body (1), and the first annular sealing ring (10) is located between the inner wall of the annular groove (9) and the first annular stopper (2).

3. The easy-to-clean drilling piston rod according to claim 1, characterized in that: The rod body (1) has a threaded portion (11), and the threaded portion (11) is located at an end of the rod body (1) away from the first annular stopper (2); and further comprises: A nut (12), wherein the nut (12) has a threaded hole (13), wherein the threaded hole (13) is threadably matched with the threaded portion (11), and one end of the nut (12) is in contact with the other end of the piston (7).

4. The easy-to-clean drilling piston rod according to claim 3, characterized in that: Also includes, A gasket (14), wherein the gasket (14) is sleeved on the rod body (1), and the gasket (14) is located between the nut (12) and the piston (7).

5. The easy-to-clean drilling piston rod according to claim 1, characterized in that: The piston (7) has an inserting portion (15) at one end close to the housing (3), the housing (3) has an inserting slot (16), and the inserting portion (15) extends into the inserting slot (16).

6. The easy-to-clean drilling piston rod according to claim 5, characterized in that: The plug-in groove (16) is a strip-shaped groove, and there are a plurality of the plug-in parts (15) and the plug-in grooves (16). The plurality of the plug-in parts (15) are distributed along the circumferential direction of the piston (7), and the plurality of the plug-in grooves (16) are distributed along the circumferential direction of the housing (3).

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