Grease lubrication pump

Abstract

The utility model discloses a grease lubrication pump. The structure of the grease lubrication pump is simplified and more compact. The grease lubrication pump comprises a pump base, an oil tank, a driver, a plunger assembly, a driven piece and a pressure switch, the oil tank, the driver and the pressure switch are installed on the pump base, a pump oil flow channel, an oil outlet flow channel and a trigger flow channel are arranged in the pump base, the pump oil flow channel is communicated with the oil outlet flow channel, and the trigger flow channel is communicated with the oil outlet flow channel. The plunger assembly is arranged in the oil pumping flow channel and installed at the output end of the driver, the driver drives the plunger assembly to slide in the oil pumping flow channel in a reciprocating mode, so that oil in the oil tank is sucked into the oil pumping flow channel under the action of negative pressure, the sucked oil is pushed out to the oil outlet flow channel for oil pumping, and the driven piece is arranged in the triggering flow channel and aligned with the pressure switch. The driven piece is pushed by oil in the triggering flow channel to extend out of the pump base, and the driven piece is pushed by oil with certain pressure to press the triggering pressure switch.

Description

Technical Field

[0001] The utility model relates to the field of grease lubrication pumps, in particular to a grease lubrication pump. Background Art

[0002] During the operation of the plunger type grease lubrication pump, the plunger can move to the oil suction position in the pump chamber, and use the negative pressure to draw the lubricating grease in the oil tank from the oil suction hole of the pump body into the pump chamber. The plunger then moves linearly toward the oil outlet until it reaches the oil pump limit position, and the lubricating oil is pumped out from the oil outlet.

[0003] The existing plunger grease lubrication pump is also equipped with a pressure switch, which is used to detect whether the oil pressure of the pump reaches the preset value. If it does not reach the preset value, an alarm will be issued. The current pressure switch is installed outside the pump seat and connected to the oil outlet channel in the pump seat through an oil pipe. The structure is relatively complex, and it occupies a certain space outside, and the cost is relatively high.

[0004] Therefore, there is an urgent need for a grease lubrication pump with a simplified and compact structure to overcome the above-mentioned defects. Utility Model Content

[0005] The utility model aims to provide a grease lubrication pump with a simplified and compact structure.

[0006] To achieve the above-mentioned purpose, the grease lubrication pump provided by the utility model includes a pump seat, an oil tank, a driver, a plunger assembly, a driven part and a pressure switch. The oil tank, the driver and the pressure switch are respectively installed on the pump seat. An oil pump flow channel, an oil outlet flow channel and a trigger flow channel are provided in the pump seat. The oil pump flow channel is connected with the oil outlet flow channel, and the trigger flow channel is connected with the oil outlet flow channel. The plunger assembly is arranged in the oil pump flow channel and is installed at the output end of the driver. The driver drives the plunger assembly to slide back and forth in the oil pump flow channel, so that the oil in the oil tank is sucked into the oil pump flow channel under the action of negative pressure, and the sucked oil is pushed out to the oil outlet flow channel for oiling. The driven part is arranged in the trigger flow channel and aligned with the pressure switch. The driven part is pushed out of the pump seat by the oil in the trigger flow channel, and the trigger pressure switch is pressed under the push of the oil with a certain pressure.

[0007] Preferably, the grease lubrication pump of the utility model also includes a sliding sleeve, which is arranged in the trigger flow channel, and the driven part is slidably arranged on the sliding sleeve. The driven part includes a retaining ring formed on its outer wall, and the retaining ring divides the inner cavity of the sliding sleeve into a first chamber and a second chamber, and the second chamber is connected to the oil outlet flow channel.

[0008] Preferably, a sealing member is sleeved on the driven member, the sealing member is arranged in the second chamber, and the sealing member is respectively pressed against the inner wall of the retaining ring and the sliding sleeve.

[0009] Preferably, the outer side wall of the driven component is provided with a mounting groove adjacent to the retaining ring along the axial direction, and the sealing component is installed in the mounting groove.

[0010] Preferably, the first chamber is equipped with an elastic member, and the elastic member always has a tendency to drive the driven member to extend into the trigger flow channel.

[0011] Preferably, the grease lubrication pump of the utility model also includes an end structure member arranged in the trigger flow channel and sealing the first chamber, the driven member includes an actuating portion, the pressure switch includes a contact, and the actuating portion passes through the end structure member and is aligned with the contact.

[0012] Preferably, an assembly chamber is formed on the front side of the pump seat, and the pressure switch is arranged in the assembly chamber.

[0013] Preferably, the assembly chamber is surrounded by a plurality of side walls extending forward from the pump seat.

[0014] Preferably, the grease lubrication pump of the utility model further comprises a cover plate which is mounted on the pump seat and seals the assembly chamber.

[0015] Preferably, the driver and the oil tank are respectively installed on the top of the pump seat, and the driver and the oil tank are arranged at intervals in the left-right direction.

[0016] Compared with the prior art, in the utility model, a trigger flow channel is provided on the pump seat, a driven component is provided in the trigger flow channel, and only a pressure switch is installed on the pump seat. This can reduce the volume of the device reflecting the pressure exposed to the outside, making the structure more compact. In addition, whether the oil injection pressure meets the standard can be determined only by providing the driven component and the pressure switch, which simplifies the structure and helps reduce costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a front view of the grease lubrication pump of the utility model.

[0018] Figure 2 It is a left side view of the grease lubrication pump of the utility model.

[0019] Figure 3 is along Figure 1 Sectional view after cutting along the AA line segment.

[0020] Figure 4 is along Figure 2 Sectional view after cutting along line segment BB.

[0021] Figure 5 is along Figure 2 Sectional view after cutting along the CC line segment.

[0022] Figure 6 A three-dimensional diagram of the grease lubrication pump of the utility model after the cover plate is separated.

[0023] Figure 7 yes Figure 3An enlarged schematic diagram of the structure at position D in the middle. At this time, the driven component is unable to press and trigger the pressure switch.

[0024] Figure 8 yes Figure 7 An enlarged schematic diagram of the driven part after pressing and triggering the pressure switch is shown. DETAILED DESCRIPTION

[0025] In order to explain the technical content and structural features of the present invention in detail, further description will be given below in combination with the embodiments and the accompanying drawings.

[0026] like Figures 1 to 5 As shown, the utility model provides a grease lubrication pump 100, including a pump base 10, an oil tank 20, a driver 30, a plunger assembly 40, a driven component 50 and a pressure switch 60. The oil tank 20, the driver 30 and the pressure switch 60 are respectively installed on the pump base 10. An oil pump flow channel 11, an oil outlet flow channel 12 and a trigger flow channel 13 are provided in the pump base 10. The oil pump flow channel 11 is connected to the oil outlet flow channel 12, and the trigger flow channel 13 is connected to the oil outlet flow channel 12. The plunger assembly 40 is arranged in the oil pump flow channel 11 and is installed at the output end of the driver 30. The driver 30 drives the reciprocating sliding of the plunger assembly 40, so that the oil in the oil tank 20 is sucked into the oil pump flow channel 11 (along the oil pump 11) under the action of negative pressure. Figure 4 The oil is sucked in by the black arrow in the middle), and the sucked oil is pushed out of the oil outlet channel 12 to pump the oil (the oil flows along the Figure 5 The driven member 50 is pushed out of the pump seat 10 by the oil in the trigger flow channel 13, and the oil with a certain pressure pushes the trigger pressure switch 60. The oil pushed out of the oil outlet flow channel 12 by the plunger assembly 40 flows to the trigger flow channel 13, and this part of the oil pushes the driven member 50 to make it extend out of the pump seat 10.

[0027] When the pressure of this part of the oil reaches a certain pressure (such as 5Mpa), the driven part 50 is pushed out and presses the trigger pressure switch 60 (the state at this time is as shown in FIG. Figure 8 As shown in FIG. 1 ), when the pressure of this part of the oil does not reach a certain pressure (less than 5 MPa, such as 3.8 MPa), the driven member 50 can still be pushed out, but will not press and trigger the pressure switch 60 (such as Figure 7 As shown), whether the pressure switch 60 is penalized can reflect whether the oil injection pressure meets the standard. If it does not meet the standard, an alarm signal can be issued or the machine can be shut down.

[0028] In the present invention, by setting the trigger flow channel 13 on the pump seat 10, setting the driven component 50 in the trigger flow channel 13, and only installing the pressure switch 60 on the pump seat 10, the volume of the device reflecting the pressure exposed to the outside can be reduced, making the structure more compact, and whether the oil injection pressure meets the standard can be determined only by setting the driven component 50 and the pressure switch 60, which simplifies the structure and helps reduce costs.

[0029] like Figure 3 , Figure 7 and Figure 8 As shown, it also includes a sliding sleeve 70, which is arranged in the trigger flow channel 13, and the driven member 50 is slidably arranged in the sliding sleeve 70. The driven member 50 includes a retaining ring 51 formed on its outer side wall, and the retaining ring 51 divides the inner cavity of the sliding sleeve 70 into a first chamber 71 and a second chamber 72, and the second chamber 72 is connected to the oil outlet flow channel 12. The oil in the oil outlet flow channel 12 flows to the second chamber 72 to push the retaining ring 51, thereby pushing the driven member 50 out of the pump seat 10. In order to strengthen the seal and prevent the oil from flowing into the first chamber 71, a sealing member 52 is mounted on the driven member 50, and the sealing member 52 is arranged in the second chamber 72. The sealing member 52 presses against the inner walls of the retaining ring 51 and the sliding sleeve 70 respectively. Preferably, the sealing member 52 is a Y-shaped sealing ring, but is not limited thereto. Furthermore, the outer side wall of the driven component 50 is provided with a clamping groove 53 adjacent to the retaining ring 51 in the axial direction, and the sealing component 52 is installed in the clamping groove 53 to enhance the installation stability of the sealing component 52 .

[0030] like Figure 3 , Figure 7 and Figure 8 As shown, the first chamber 71 is equipped with an elastic member 73, and the elastic member 73 always has a tendency to drive the driven member 50 to extend into the trigger flow channel 13. After the oil pumping stops, the elastic member 73 drives the driven member 50 to extend into the trigger flow channel 13 for reset. Preferably, the elastic member 73 is a spring, but is not limited thereto.

[0031] like Figure 3 , Figure 7 and Figure 8 As shown, the grease lubrication pump 100 of the utility model further includes an end structure 80 disposed in the trigger flow channel 13 and sealing the first chamber 71, the driven part 50 includes an action part 54, and the pressure switch 60 includes a contact 61, and the action part 54 passes through the end structure 80 and is aligned with the contact 61. After the driven part 50 is pushed out, the action part 54 passes through the end structure 80 and presses the contact 61, thereby triggering the pressure switch 60. Preferably, the radius of the action part 54 is smaller than the radius of the driven part 50. The pressure switch 60 can adopt the existing structure.

[0032] like Figure 3 , Figure 6 , Figure 7 and Figure 8As shown, an assembly chamber 14 is formed on the front side of the pump seat 10, and the pressure switch 60 is arranged in the assembly chamber 14. The pressure switch 60 is arranged in the pump seat 10, which is beneficial to protecting the pressure switch 60, and can also conveniently seal the pressure switch 60 to better prevent water and dust. Preferably, the assembly chamber 14 is surrounded by a number of side walls extending forward from the pump seat 10. In the embodiment provided by the utility model, the assembly chamber 14 is square, but not limited to this. Furthermore, the grease lubrication pump 100 of the utility model also includes a cover plate 90 installed on the pump seat 10 and sealing the assembly chamber 14. After the assembly chamber 14 is sealed with the cover plate 90, dust and water can be achieved.

[0033] like Figure 1 , Figure 4 , Figure 5 and Figure 6 As shown, the driver 30 and the oil tank 20 are respectively installed on the top of the pump base 10, and the driver 30 and the oil tank 20 are arranged at intervals along the left and right directions, and the design is optimized to make the structure compact.

[0034] like Figure 6 In the figure, the direction indicated by arrow X is from left to right, the direction indicated by arrow Y is from front to back, and the direction indicated by arrow Z is from top to bottom.

[0035] The above disclosure is only a preferred example of the present invention, which cannot be used to limit the scope of the present invention. Therefore, equivalent changes made according to the claims of the present invention are all within the scope of the present invention.

Claims

1. A grease lubrication pump, characterized in that: The utility model comprises a pump seat, an oil tank, a driver, a plunger assembly, a driven part and a pressure switch, wherein the oil tank, the driver and the pressure switch are respectively installed on the pump seat, and an oil pump flow channel, an oil outlet flow channel and a trigger flow channel are arranged in the pump seat, the oil pump flow channel is communicated with the oil outlet flow channel, the trigger flow channel is communicated with the oil outlet flow channel, the plunger assembly is arranged in the oil pump flow channel and is installed at the output end of the driver, the driver drives the plunger assembly to slide back and forth in the oil pump flow channel, so that the oil in the oil tank is sucked into the oil pump flow channel under the action of negative pressure, and the sucked oil is pushed out to the oil outlet flow channel for oil pumping, the driven part is arranged in the trigger flow channel and is aligned with the pressure switch, the driven part is pushed out of the pump seat by the oil in the trigger flow channel, and the pressure switch is pressed and triggered under the push of the oil with a certain pressure.

2. The grease lubrication pump according to claim 1, characterized in that: It also includes a sliding sleeve, which is arranged on the trigger flow channel, and the driven part is slidably arranged on the sliding sleeve. The driven part includes a retaining ring formed on its outer side wall, and the retaining ring divides the inner cavity of the sliding sleeve into a first chamber and a second chamber, and the second chamber is connected to the oil outlet flow channel.

3. The grease lubrication pump according to claim 2, characterized in that: A sealing member is sleeved on the driven member, and the sealing member is arranged in the second chamber. The sealing member is respectively pressed against the inner walls of the retaining ring and the sliding sleeve.

4. The grease lubrication pump according to claim 3, characterized in that: The outer side wall of the driven component is provided with a clamping groove adjacent to the retaining ring along the axial direction, and the sealing component is installed in the clamping groove.

5. The grease lubrication pump according to claim 2, characterized in that: The first chamber is equipped with an elastic member, and the elastic member always has a tendency to drive the driven member to extend into the trigger flow channel.

6. The grease lubrication pump according to claim 2, characterized in that: It also includes an end structure member disposed on the trigger flow channel and sealing the first chamber, the driven member includes an action portion, the pressure switch includes a contact, and the action portion passes through the end structure member and is aligned with the contact.

7. The grease lubrication pump according to claim 1, characterized in that: An assembly chamber is formed on the front side of the pump seat, and the pressure switch is arranged in the assembly chamber.

8. The grease lubrication pump according to claim 7, characterized in that: The assembly chamber is surrounded by a plurality of side walls extending forward from the pump seat.

9. The grease lubrication pump according to claim 7, characterized in that: It also includes a cover plate which is installed on the pump seat and seals the assembly chamber.

10. The grease lubrication pump according to claim 1, characterized in that: The driver and the oil tank are respectively installed on the top of the pump seat, and the driver and the oil tank are arranged at intervals along the left-right direction.

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