A piston lubrication pump

Abstract

This invention discloses a piston-type lubrication pump, comprising: a pump body assembly, a valve core assembly, and a drive assembly; the pump body assembly includes: a valve block; the valve block has an inlet and an outlet, and an insertion hole is formed inside the valve block, in which the valve core assembly is installed; the valve core assembly includes: a cylinder, a piston rod, a valve core mechanism, and a valve seat mechanism; the cylinder is connected to the valve seat mechanism, and the cylinder has an inlet channel and a piston chamber, the inlet channel connecting the inlet and the piston chamber, the valve core mechanism being located within the inlet channel, the first end of the piston rod being connected to the drive assembly, and the second end being located within the piston chamber; under the drive of the drive assembly, liquid in the inlet channel can enter the piston chamber through the valve core mechanism, and push the liquid in the piston chamber into the valve seat mechanism, which is connected to the outlet. This invention's lubrication pump is small in size and simple in structure, replacing the traditional pneumatic oil supply method, and quickly providing lubricant to rock drilling rigs.

Description

Technical Field

[0001] The invention relates to a lubrication pump, in particular to a piston lubrication pump. Background Art

[0002] A lubrication pump is a lubrication device that supplies lubricant to the lubrication parts. Mechanical equipment requires regular lubrication. In the past, the main method of lubrication was manual lubrication after a certain maintenance cycle based on the working condition of the equipment, such as grease. A lubrication pump can make this maintenance work easier. Lubrication pumps are divided into manual lubrication pumps and electric lubrication pumps. At present, the oil output of the lubrication system of most drilling rig manufacturers is pneumatic. This method results in a larger volume of the lubrication system, and a larger space is required in the vehicle to place the lubrication system. Therefore, it is particularly important to design a piston lubrication pump to replace the pneumatic oil supply method. Summary of the invention

[0003] According to an embodiment of the present invention, there is provided a piston lubrication pump, comprising: a pump body assembly, a valve core assembly and a drive assembly; The pump assembly includes: a valve block; The valve block is provided with a liquid inlet and a liquid outlet, and the valve block is provided with a plug hole, in which the valve core assembly is installed; The valve core assembly includes: a cylinder body, a piston rod, a valve core mechanism and a valve seat mechanism; The cylinder body is connected to the valve seat mechanism, and a liquid inlet channel and a piston cavity are provided on the cylinder body. The liquid inlet channel connects the liquid inlet port and the piston cavity, and the valve core mechanism is arranged in the liquid inlet channel. The first end of the piston rod is connected to the driving assembly, and the second end is located in the piston cavity. When the piston rod is driven by the driving assembly, the liquid in the liquid inlet channel can enter the piston cavity through the valve core mechanism, and push the liquid in the piston cavity into the valve seat mechanism, and the valve seat mechanism is connected to the liquid outlet port.

[0004] Furthermore, the valve core mechanism includes: a valve core base, a one-way valve core and a valve core spring; The valve core base is fixed on the inner wall of the liquid inlet channel, one end of the valve core spring is connected to the valve core base, and the other end is connected to the one-way valve core. The valve core spring is used to close the one-way valve core.

[0005] Furthermore, the valve seat mechanism includes: a one-way valve seat, a valve ball, a valve chamber spring and a pin shaft; One end of the one-way valve seat is connected to the cylinder body, and a valve cavity is opened in the one-way valve seat. One end of the valve cavity is connected to the piston cavity, and the other end is connected to the liquid outlet. The valve ball is arranged in the valve cavity and located at the connecting part of the valve cavity and the piston cavity. The pin shaft is arranged on the one-way valve seat and vertically passes through the valve cavity. One end of the valve cavity spring is fixed on the pin shaft, and the other end is pressed against one side of the valve ball.

[0006] Furthermore, the valve seat mechanism further comprises: a sealing ring; The sealing ring is sleeved on the outside of the one-way valve seat, and the sealing ring is located between the one-way valve seat and the valve block, and is used to prevent the liquid at the liquid inlet from passing through the gap between the one-way valve seat and the valve block.

[0007] Further, the driving assembly includes: a driving mechanism, a reset mechanism and a driving rod; One end of the driving rod is connected to the first end of the piston rod. Under the drive of the driving mechanism, the driving rod pulls the piston rod to move out of the piston cavity. Under the drive of the reset mechanism, the driving rod pushes the piston rod to move into the piston cavity.

[0008] Further, the driving mechanism comprises: a driving housing, a valve sleeve and an electromagnetic coil; One end of the drive housing is connected to the valve sleeve, the valve sleeve is connected to the cylinder body and the valve block, one end of the valve sleeve is located between the cylinder body and the valve block, the electromagnetic coil is located in the drive housing, a drive chamber is arranged in the drive housing, and the reset mechanism and the drive rod are both arranged in the drive chamber.

[0009] Furthermore, the driving rod is a hollow structure, one end of the reset mechanism is connected to the inner wall of the driving chamber, and the other end is located inside the driving rod.

[0010] Furthermore, the driving rod is made of metal material.

[0011] Further, the pump body assembly includes: a joint body; The first end of the joint body is connected to the valve block, and the second end has a first liquid outlet. The joint body has a liquid outlet channel, the valve block has a second liquid outlet, and the liquid outlet channel connects the valve seat mechanism, the first liquid outlet and the second liquid outlet.

[0012] Furthermore, at least two liquid inlets are provided on the valve block, both of which are connected to the liquid inlet channel, and the valve core mechanism is located at the connection point between the liquid inlet channel and the piston chamber.

[0013] According to a piston lubrication pump of an embodiment of the present invention, the present application drives the piston rod to move out of the cylinder body through a driving component, so that the lubricant enters the liquid inlet channel from the liquid inlet. Due to the negative pressure formed in the piston cavity, the lubricant in the liquid inlet channel can enter the piston cavity through the valve core mechanism. The driving component then drives the piston rod to move into the cylinder body, forming a positive pressure in the piston cavity, pushing the lubricant in the piston cavity into the valve seat mechanism, and the lubricant in the valve seat mechanism is discharged through the liquid outlet to provide lubricant to the rock drilling trolley. The entire lubrication pump is small in size and simple in structure. It replaces the traditional pneumatic oil supply method to quickly provide lubricant to the rock drilling trolley.

[0014] It is to be understood that both the foregoing general description and the following detailed description are exemplary, and are intended to provide further explanation of the technology as claimed. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a structural diagram of a piston lubrication pump according to an embodiment of the present invention; Figure 2 is a cross-sectional view of a piston lubrication pump according to an embodiment of the present invention; Figure 3 A cross-sectional view of a valve core assembly of a piston lubrication pump according to an embodiment of the present invention; Figure 4 A structural diagram of a piston lubrication pump according to an embodiment of the present invention; Figure 5 A structural diagram of another piston lubrication pump according to an embodiment of the present invention; Figure 6 The figure is a circuit diagram of a piston lubrication pump according to an embodiment of the present invention.

[0016] The reference numerals in the figure are: 1 is a pump body assembly, 11 is a valve block, 12 is a joint body, 2 is a valve core assembly, 21 is a cylinder body, 22 is a piston rod, 23 is a valve core base, 24 is a one-way valve core, 25 is a valve core spring, 3 is a drive assembly, 31 is a drive housing, 32 is a valve sleeve, 33 is an electromagnetic coil, 34 is a reset mechanism, 35 is a drive rod, 41 is a one-way valve seat, 42 is a valve ball, 43 is a valve chamber spring, 44 is a pin shaft, and 45 is a sealing ring. DETAILED DESCRIPTION

[0017] The preferred embodiments of the present invention will be described in detail below in conjunction with the accompanying drawings to further illustrate the present invention.

[0018] First, combine Figure 1 to Figure 6 A piston lubrication pump according to an embodiment of the present invention is described, which is used for providing lubricant to a rock drilling rig.

[0019] like Figure 1 to Figure 6 As shown, a piston lubrication pump according to an embodiment of the present invention comprises: a pump body assembly 1, a valve core assembly 2 and a drive assembly 3; The pump body assembly 1 comprises: a valve block 11; The valve block 11 is provided with a liquid inlet and a liquid outlet, and the valve block 11 is provided with a plug hole, in which the valve core assembly 2 is installed; The valve core assembly 2 includes: a cylinder body 21, a piston rod 22, a valve core mechanism and a valve seat mechanism; The cylinder body 21 is connected to the valve seat mechanism. A liquid inlet channel and a piston cavity are provided on the cylinder body 21. The liquid inlet channel connects the liquid inlet port and the piston cavity. The valve core mechanism is arranged in the liquid inlet channel. The first end of the piston rod 22 is connected to the drive assembly 3 and the second end is located in the piston cavity. When the piston rod 22 is driven by the drive assembly 3, the liquid in the liquid inlet channel can enter the piston cavity through the valve core mechanism and push the liquid in the piston cavity into the valve seat mechanism. The valve seat mechanism is connected to the liquid outlet.

[0020] In the present application, the driving component 3 drives the piston rod 22 to move outside the cylinder body 21, so that the lubricant enters the liquid inlet channel from the liquid inlet port. Due to the negative pressure formed in the piston cavity, the lubricant in the liquid inlet channel can enter the piston cavity through the valve core mechanism. The driving component 3 then drives the piston rod 22 to move inside the cylinder body 21, forming a positive pressure in the piston cavity, pushing the lubricant in the piston cavity into the valve seat mechanism, and the lubricant in the valve seat mechanism is discharged through the liquid outlet, thereby providing lubricant to the rock drilling trolley. The entire lubrication pump is small in size and simple in structure. It replaces the traditional pneumatic oil supply method to quickly provide lubricant to the rock drilling trolley.

[0021] In this embodiment, the piston rod 22 is made of GCr15, the cylinder body 21, the valve core mechanism and the valve seat mechanism are made of 3Cr13, and nitriding treatment is performed to improve the surface hardness, wear resistance and fatigue strength, thereby extending the service life.

[0022] like Figure 2~Figure 3 As shown, the valve core mechanism includes: a valve core base 23, a one-way valve core 24 and a valve core spring 25; The valve core base 23 is fixed on the inner wall of the liquid inlet channel. One end of the valve core spring 25 is connected to the valve core base 23 and the other end is connected to the one-way valve core 24 . The valve core spring 25 is used to close the one-way valve core 24 .

[0023] In the absence of external force, the one-way valve core 24 can prevent the lubricant from entering the piston cavity due to the action of the valve core spring 25. When negative pressure is formed in the piston cavity, the one-way valve core 24 is opened due to the negative pressure, allowing the lubricant to enter the piston cavity. When positive pressure is formed in the piston cavity, the one-way valve core 24 is closed due to the positive pressure.

[0024] like Figure 2~Figure 3 As shown, the valve seat mechanism includes: a one-way valve seat 41, a valve ball 42, a valve chamber spring 43 and a pin 44; One end of the one-way valve seat 41 is connected to the cylinder body 21, and a valve cavity is opened in the one-way valve seat 41. One end of the valve cavity is connected to the piston cavity, and the other end is connected to the liquid outlet. The valve ball 42 is arranged in the valve cavity and located at the connecting part of the valve cavity and the piston cavity. The pin shaft 44 is arranged on the one-way valve seat 41 and vertically passes through the valve cavity. One end of the valve cavity spring 43 is fixed on the pin shaft 44, and the other end is pressed against one side of the valve ball 42.

[0025] When positive pressure is formed in the piston cavity, the lubricant in the piston cavity will push the valve ball 42, so that the lubricant enters the valve cavity, and the lubricant can enter the liquid outlet through the valve cavity. The elastic force of the valve cavity spring 43 blocks the valve ball 42 at the connection between the piston cavity and the valve cavity, preventing the lubricant from entering the valve cavity when the piston cavity is not under positive pressure.

[0026] like Figure 2~Figure 3 As shown, the valve seat mechanism further includes: a sealing ring 45; The sealing ring 45 is sleeved on the outside of the one-way valve seat 41 . The sealing ring 45 is located between the one-way valve seat 41 and the valve block 11 , and is used to prevent the liquid at the liquid inlet from passing through the gap between the one-way valve seat 41 and the valve block 11 .

[0027] The sealing ring 45 can prevent the lubricant entering the liquid inlet from passing through the gap between the one-way valve seat 41 and the valve block 11, causing the lubricant to enter the liquid outlet without passing through the valve core assembly 2, resulting in leakage.

[0028] like Figure 2 As shown, the driving assembly 3 includes: a driving mechanism, a reset mechanism 34 and a driving rod 35; One end of the driving rod 35 is connected to the first end of the piston rod 22. Under the drive of the driving mechanism, the driving rod 35 pulls the piston rod 22 to move out of the piston cavity. Under the drive of the reset mechanism 34, the driving rod 35 pushes the piston rod 22 to move into the piston cavity.

[0029] The driving mechanism includes: a driving housing 31, a valve sleeve 32 and an electromagnetic coil 33; one end of the driving housing 31 is connected to the valve sleeve 32, the valve sleeve 32 is connected to the cylinder body 21 and the valve block 11, one end of the valve sleeve 32 is located between the cylinder body 21 and the valve block 11, the electromagnetic coil 33 is located in the driving housing 31, a driving chamber is provided in the driving housing 31, and a reset mechanism 34 and a driving rod 35 are both provided in the driving chamber.

[0030] The driving rod 35 is a hollow structure, one end of the reset mechanism 34 is connected to the inner wall of the driving chamber, and the other end is located in the driving rod 35. The driving rod 35 is made of metal material.

[0031] When the power is on, the electromagnetic coil 33 moves the driving rod 35 out of the piston cavity, forming a negative pressure in the piston cavity. When the power is off, the reset mechanism 34 moves the driving rod 35 into the piston cavity, forming a positive pressure in the piston cavity.

[0032] like Figure 1 to Figure 6 As shown, the pump body assembly 1 includes: a joint body 12; The first end of the joint body 12 is connected to the valve block 11, and the second end has a first liquid outlet. The joint body 12 has a liquid outlet channel, and the valve block 11 has a second liquid outlet. The liquid outlet channel connects the valve seat mechanism, the first liquid outlet and the second liquid outlet.

[0033] At least two liquid inlets are provided on the valve block 11 , and both of the two liquid inlets are connected to the liquid inlet channel. The valve core mechanism is located at the connection point between the liquid inlet channel and the piston chamber.

[0034] In this embodiment, the liquid inlet has an SC port and a C port, such as Figure 1 and Figure 5 As shown, the liquid outlets include port L as the first liquid outlet and port G as the second liquid outlet.

[0035] Above, refer to Figure 1 to Figure 6 A piston lubrication pump according to an embodiment of the present invention is described. The present application drives the piston rod 22 to move outside the cylinder body 21 through the driving component 3, so that the lubricant enters the liquid inlet channel from the liquid inlet. Due to the negative pressure formed in the piston cavity, the lubricant in the liquid inlet channel can enter the piston cavity through the valve core mechanism. The driving component 3 then drives the piston rod 22 to move into the cylinder body 21, forming a positive pressure in the piston cavity, pushing the lubricant in the piston cavity into the valve seat mechanism, and the lubricant in the valve seat mechanism is discharged through the liquid outlet to provide lubricant to the rock drilling rig. The entire lubrication pump is small in size and simple in structure. It replaces the traditional pneumatic oil supply method to quickly provide lubricant to the rock drilling rig.

[0036] It should be noted that, in this specification, the terms "include", "comprises" or any other variations thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also includes other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprises..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0037] Although the content of the present invention has been described in detail through the above preferred embodiments, it should be appreciated that the above description should not be considered as a limitation of the present invention. After reading the above content, it will be apparent to those skilled in the art that various modifications and substitutions of the present invention will occur. Therefore, the protection scope of the present invention should be limited by the appended claims.

Claims

1. A piston lubrication pump, characterized in that: include: Pump body assembly, valve core assembly and drive assembly; The pump body assembly includes: a valve block; The valve block is provided with a liquid inlet and a liquid outlet, the valve block is provided with a plug hole, and the valve core assembly is installed in the plug hole; The valve core assembly comprises: a cylinder body, a piston rod, a valve core mechanism and a valve seat mechanism; The cylinder body is connected to the valve seat mechanism, and a liquid inlet channel and a piston cavity are provided on the cylinder body. The liquid inlet channel connects the liquid inlet port and the piston cavity, and the valve core mechanism is arranged in the liquid inlet channel. The first end of the piston rod is connected to the driving component, and the second end is located in the piston cavity. When the piston rod is driven by the driving component, the liquid in the liquid inlet channel can enter the piston cavity through the valve core mechanism, and push the liquid in the piston cavity into the valve seat mechanism, and the valve seat mechanism is connected to the liquid outlet port.

2. A piston lubrication pump as claimed in claim 1, characterized in that: The valve core mechanism comprises: a valve core base, a one-way valve core and a valve core spring; The valve core base is fixed on the inner wall of the liquid inlet channel, one end of the valve core spring is connected to the valve core base, and the other end is connected to the one-way valve core, and the valve core spring is used to close the one-way valve core.

3. A piston lubrication pump as claimed in claim 1, characterized in that: The valve seat mechanism comprises: a one-way valve seat, a valve ball, a valve chamber spring and a pin shaft; One end of the one-way valve seat is connected to the cylinder body, a valve cavity is defined in the one-way valve seat, one end of the valve cavity is connected to the piston cavity, and the other end is connected to the liquid outlet, the valve ball is arranged in the valve cavity and located at the connection point between the valve cavity and the piston cavity, the pin shaft is arranged on the one-way valve seat and vertically passes through the valve cavity, one end of the valve cavity spring is fixed on the pin shaft, and the other end is pressed against one side of the valve ball.

4. A piston lubrication pump as claimed in claim 3, characterized in that: The valve seat mechanism also includes: a sealing ring; The sealing ring is sleeved on the outside of the one-way valve seat, and the sealing ring is located between the one-way valve seat and the valve block, and is used to prevent the liquid at the liquid inlet from passing through the gap between the one-way valve seat and the valve block.

5. A piston lubrication pump as claimed in claim 1, characterized in that: The driving assembly comprises: a driving mechanism, a reset mechanism and a driving rod; One end of the driving rod is connected to the first end of the piston rod. Under the drive of the driving mechanism, the driving rod pulls the piston rod to move out of the piston cavity. Under the drive of the reset mechanism, the driving rod pushes the piston rod to move into the piston cavity.

6. A piston lubrication pump as claimed in claim 5, characterized in that: The driving mechanism comprises: a driving housing, a valve sleeve and an electromagnetic coil; One end of the drive housing is connected to the valve sleeve, the valve sleeve is connected to the cylinder body and the valve block, one end of the valve sleeve is located between the cylinder body and the valve block, the electromagnetic coil is located in the drive housing, a drive chamber is provided in the drive housing, and the reset mechanism and the drive rod are both provided in the drive chamber.

7. A piston lubrication pump as claimed in claim 6, characterized in that: The driving rod is a hollow structure, one end of the reset mechanism is connected to the inner wall of the driving chamber, and the other end is located in the driving rod.

8. A piston lubrication pump as claimed in claim 1, characterized in that: The driving rod is made of metal material.

9. A piston lubrication pump as claimed in claim 1, characterized in that: The pump body assembly comprises: a joint body; The first end of the joint body is connected to the valve block, and the second end has a first liquid outlet. The joint body has a liquid outlet channel, the valve block is provided with a second liquid outlet, and the liquid outlet channel connects the valve seat mechanism, the first liquid outlet and the second liquid outlet.

10. A piston lubrication pump as claimed in claim 1, characterized in that: The valve block is provided with at least two liquid inlets, both of which are connected to the liquid inlet channel, and the valve core mechanism is located at the connection point between the liquid inlet channel and the piston chamber.

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