Lubricating and sealing device for fluid end of plunger pump

Abstract

The utility model discloses a plunger pump fluid end lubricating and sealing device, and relates to the technical field of plunger pump lubricating and sealing devices. The sealing and lubricating device comprises a rectangular bottom plate, wherein a sealing and lubricating mechanism, a one-way circulating mechanism and a driving mechanism are arranged on the rectangular bottom plate; the top of the rectangular bottom plate is fixedly connected with a plurality of supporting frames, the tops of the two supporting frames located on the front side are fixedly connected with a liquid storage pipe, the top of the supporting frame located on the rear side is fixedly connected with a liquid inlet pipe, and the front side of the liquid inlet pipe communicates with the liquid storage pipe. By arranging the lubricating sealing mechanism, the problems that it is inconvenient to ensure that the lubricating oil does not pollute a reagent when the lubricating oil is injected, the physicochemical property of liquid is possibly changed even if the liquid is polluted by a small amount of the lubricating oil, the liquid cannot reach expected standards and requirements, and the quality grade of the liquid is reduced are solved.

Description

Technical Field

[0001] The utility model belongs to the technical field of lubricating and sealing devices for plunger pumps, in particular to a lubricating and sealing device for the hydraulic end of a plunger pump. Background Art

[0002] In the related technology, a lubrication and sealing device for the hydraulic end of a plunger pump is disclosed with the announcement number CN206522238U. The device greatly reduces the friction between the plunger pump plunger and the packing, extends the life of the plunger packing by 3 times, blocks water leakage by using a new type of packing, reduces the labor intensity of employees replacing packing and the workload of collecting water, reduces environmental pollution, and realizes the automation of equipment operation, thereby increasing the service life of the pump.

[0003] However, during the use of the device, it is not easy to ensure that the lubricating oil does not contaminate the reagents. Even a small amount of lubricating oil contamination may change the physical and chemical properties of the liquid, making it unable to meet the expected standards and requirements and reducing the quality level of the liquid. Utility Model Content

[0004] The utility model aims to provide a lubricating sealing device for the hydraulic end of a plunger pump. By setting a lubricating sealing mechanism, the problem that it is inconvenient to add lubricating oil to ensure that the lubricating oil does not contaminate the reagent is solved. Even a small amount of lubricating oil contamination may change the physical and chemical properties of the liquid, making it unable to meet the expected standards and requirements and reducing the quality level of the liquid is solved.

[0005] In order to solve the above technical problems, the utility model is realized by the following technical solutions:

[0006] The utility model is a lubricating and sealing device for the hydraulic end of a plunger pump, comprising a rectangular bottom plate, on which a sealing and lubricating mechanism, a one-way circulation mechanism and a driving mechanism are arranged;

[0007] A plurality of support frames are fixedly connected to the top of the rectangular base plate, a liquid storage tube is fixedly connected to the top of the two support frames located on the front side, and a liquid inlet tube is fixedly connected to the top of the support frame located on the rear side, the front side of the liquid inlet tube is connected to the liquid storage tube, a piston shaft is rotatably passed through the left outer wall of the liquid storage tube, the sealing and lubricating mechanism includes a sealing assembly and a lubrication assembly, and the sealing assembly includes a piston slidably connected to the inner wall of the liquid storage tube.

[0008] Furthermore, a fixing ring is fixedly connected to the inner wall of the liquid storage tube, a diaphragm is fixedly connected to the inner wall of the fixing ring, and the left side of the diaphragm is fixedly connected to the piston.

[0009] Furthermore, a plurality of annular grooves are provided on the outer wall of the piston, a plurality of sealing rings 1 are provided on the inner walls of the annular grooves, and the outer walls of the plurality of sealing rings 1 are slidably connected to the liquid storage tube.

[0010] Furthermore, the lubrication assembly includes an oil inlet bolt threadedly penetrating the outer wall of the front side of the liquid storage tube, a sealing ring 2 is fixedly connected to the outer wall of the oil inlet bolt, and the rear side of the sealing ring 2 is in contact with the liquid storage tube.

[0011] Furthermore, the one-way flow mechanism includes a support assembly and a one-way flow assembly, the support assembly includes a cross support frame fixedly connected to the inner walls of the liquid storage tube and the liquid inlet tube, respectively, the liquid storage tube and the liquid inlet tube are both provided with a clamping ring, the outer walls of the two clamping rings are fixedly connected with a sealing ring three, and the outer walls of the two sealing rings three are respectively fixedly connected to the liquid storage tube and the liquid inlet tube.

[0012] Furthermore, the one-way circulation component includes telescopic rods respectively fixedly connected to the side of the cross support frame close to the clamping ring, and the ends of the two telescopic rods away from the cross support frame are fixedly connected to connecting blocks, and the two telescopic rods are respectively sleeved with springs, and the top and end of the two springs are respectively fixedly connected to the two cross support frames and the two connecting blocks.

[0013] Furthermore, the driving mechanism comprises a rectangular bottom plate fixedly connected to the top of the rectangular bottom plate, and a rotating shaft rotatably penetrates through the support plate.

[0014] Furthermore, a motor is fixedly connected to the front extension of the rotating shaft, a turntable is fixedly connected to the rear extension of the rotating shaft, a connecting rod is hingedly provided on the back side of the turntable, and the end of the connecting rod is hinged to the piston shaft.

[0015] The utility model has the following beneficial effects:

[0016] 1. By setting up a sealing lubrication mechanism, when the piston needs lubrication, open the oil inlet bolt, inject the lubricating oil into the liquid storage tube, and then tighten the oil inlet bolt. At this time, the piston continues to move and the lubricating oil can be automatically and evenly applied to the piston. When the piston moves to the right, the diaphragm will fold and shrink under the action of the piston. When the piston moves to the left, the diaphragm will automatically stretch, thereby preventing the lubricating oil on the piston from contaminating the liquid in the liquid storage tube, ensuring that the transported liquid is not contaminated by the lubricating oil, maintaining the original properties and quality of the liquid, and preventing the performance of the liquid from changing due to the contamination of the lubricating oil, such as viscosity, chemical properties, etc., thereby ensuring the normal operation and work efficiency of the entire system;

[0017] 2. By setting a one-way flow mechanism, when the piston moves to the left in the liquid storage tube, the device will suck the liquid from the liquid source into the liquid storage tube through the liquid inlet tube. During the suction, the steel ball in the liquid inlet tube will push the telescopic rod and spring on the cross support frame through the connecting block to compress, thereby creating a gap between the steel ball and the sealing ring three to suck the liquid. At this time, the one-way flow mechanism in the liquid storage tube is in a closed state. When the piston moves to the right, the one-way flow mechanism in the liquid storage tube is opened, and the one-way flow mechanism in the liquid inlet tube is closed, so as to ensure that the liquid can only flow in the specified direction and will not flow in the opposite direction, thereby maintaining the stability of the liquid flow in the system and the normal working order, which helps to maintain the pressure in a specific area of ​​the system and prevent the pressure from being lost due to backflow.

[0018] Of course, any product implementing the present invention does not necessarily need to achieve all of the advantages described above at the same time. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the utility model, the drawings required for describing the embodiments are briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0020] Figure 1 It is a schematic diagram of the overall structure of the utility model;

[0021] Figure 2 It is a schematic diagram of the cross-sectional structure of the utility model;

[0022] Figure 3 For this utility model Figure 2 A is a schematic diagram of the enlarged structure of the middle part;

[0023] Figure 4 For this utility model Figure 2 A schematic diagram of the enlarged structure of B;

[0024] Figure 5 For this utility model Figure 2 Schematic diagram of the enlarged structure of C in the figure.

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] 1. Rectangular bottom plate; 101. Support frame; 102. Liquid storage tube; 103. Liquid inlet tube; 104. Piston shaft; 2. Sealing and lubricating mechanism; 21. Sealing assembly; 211. Piston; 212. Fixing ring; 213. Diaphragm; 214. Annular groove; 215. Sealing ring one; 22. Lubricating assembly; 221. Oil inlet bolt; 222. Sealing ring two; 3. One-way flow mechanism; 31. Support assembly; 311. Cross support frame; 312. Snap ring; 313. Sealing ring three; 32. One-way flow assembly; 321. Telescopic rod; 322. Connecting block; 323. Spring; 324. Steel ball; 4. Driving mechanism; 401. Support plate; 402. Rotating shaft; 403. Motor; 404. Turntable; 405. Connecting rod. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0028] See also Figure 1-5 As shown, the utility model is a lubricating and sealing device for the hydraulic end of a plunger pump, comprising a rectangular bottom plate 1, on which a sealing and lubricating mechanism 2, a one-way flow mechanism 3 and a driving mechanism 4 are arranged;

[0029] A plurality of support frames 101 are fixedly connected to the top of the rectangular base plate 1, a liquid storage tube 102 is fixedly connected to the top of the two support frames 101 on the front side, a liquid inlet tube 103 is fixedly connected to the top of the support frame 101 on the rear side, the front side of the liquid inlet tube 103 is connected to the liquid storage tube 102, a piston shaft 104 is rotatably passed through the left outer wall of the liquid storage tube 102, the sealing and lubricating mechanism 2 includes a sealing component 21 and a lubrication component 22, and the sealing component 21 includes a piston 211 slidably connected to the inner wall of the liquid storage tube 102.

[0030] Among them Figure 2 As shown, a fixing ring 212 is fixedly connected to the inner wall of the liquid storage tube 102 , a diaphragm 213 is fixedly connected to the inner wall of the fixing ring 212 , and the left side of the diaphragm 213 is fixedly connected to the piston 211 .

[0031] By providing the diaphragm 213, it is ensured that the transported liquid is not mixed with lubricating oil and thus contaminated, thereby maintaining the original properties and quality of the liquid.

[0032] Among them Figure 3As shown, a plurality of annular grooves 214 are formed on the outer wall of the piston 211 , a plurality of sealing rings 215 are formed on the inner walls of the plurality of annular grooves 214 , and the outer walls of the plurality of sealing rings 215 are all slidably connected to the liquid storage tube 102 .

[0033] By providing a sealing ring 215, it can be used in conjunction with the piston 211, thereby increasing the sealing performance of the piston 211 and ensuring that no leakage occurs when the device is used.

[0034] Among them Figure 3 As shown, the lubrication assembly 22 includes an oil inlet bolt 221 threadedly penetrating the outer wall of the front side of the liquid storage tube 102 , and a second sealing ring 222 is fixedly connected to the outer wall of the oil inlet bolt 221 , and the rear side of the second sealing ring 222 is in contact with the liquid storage tube 102 .

[0035] By providing the lubrication assembly 22, each moving part of the hydraulic end of the plunger pump can be fully lubricated, thereby reducing friction and wear, extending the service life of the parts, and maintaining efficient operation of the equipment.

[0036] Among them Figure 4 As shown, the one-way flow mechanism 3 includes a support component 31 and a one-way flow component 32. The support component 31 includes a cross support frame 311 fixedly connected to the inner walls of the liquid storage tube 102 and the liquid inlet tube 103 respectively. A clamping ring 312 is provided in the liquid storage tube 102 and the liquid inlet tube 103. The outer walls of the two clamping rings 312 are fixedly connected with sealing rings 313. The outer walls of the two sealing rings 313 are fixedly connected to the liquid storage tube 102 and the liquid inlet tube 103 respectively.

[0037] By providing the support assembly 31 , necessary support can be provided for the one-way flow assembly 32 , thereby ensuring the stability of the device during operation.

[0038] Among them Figure 4 As shown, the one-way circulation component 32 includes telescopic rods 321 respectively fixedly connected to the side of the cross support frame 311 close to the clamping ring 312, and the ends of the two telescopic rods 321 away from the cross support frame 311 are fixedly connected to the connecting blocks 322, and the two telescopic rods 321 are respectively sleeved with springs 323, and the top and the end of the two springs 323 are respectively fixedly connected to the two cross support frames 311 and the two connecting blocks 322.

[0039] By providing the one-way flow component 32, it is ensured that the liquid can only flow in a specified direction and cannot flow in the reverse direction, thereby maintaining the stability of the liquid flow in the system and the normal working order.

[0040] Among them Figure 5 As shown, the driving mechanism 4 includes a rectangular bottom plate 30 fixedly connected to the top of the rectangular bottom plate 1, and a rotating shaft 402 rotatably penetrates through the support plate 401.

[0041] By providing the driving mechanism 4, it is responsible for driving the relevant components to work and ensure the smooth implementation of lubrication and sealing actions, which can reduce manpower output and increase work efficiency.

[0042] Among them Figure 5 As shown, a motor 403 is fixedly connected to the front extension of the rotating shaft 402 , a turntable 404 is fixedly connected to the rear extension of the rotating shaft 402 , a connecting rod 405 is hingedly provided on the back of the turntable 404 , and the end of the connecting rod 405 is hingedly connected to the piston shaft 104 .

[0043] By providing the motor 403, it is ensured that the device can operate stably for a long time, and continuous lubrication and sealing protection are provided for the hydraulic end of the plunger pump.

[0044] A specific application of this embodiment is as follows: when in use, first install the device at a corresponding position, connect the liquid inlet pipe 103 to the liquid source, and connect the liquid storage pipe 102 to the target object to be added with liquid, start the motor 403 on the support plate 401, and the motor 403 drives the turntable 404 to rotate through the rotating shaft 402, thereby driving the piston 211 to move in the liquid storage pipe 102 through the connecting rod 405 and the piston shaft 104. When the piston 211 moves to the left in the liquid storage pipe 102, the device will The tube 103 sucks the liquid from the liquid source into the liquid storage tube 102. During the suction, the steel ball 324 located in the liquid inlet tube 103 pushes the telescopic rod 321 and the spring 323 on the cross support frame 311 through the connecting block 322 to compress, so that a gap is generated between the steel ball 324 and the sealing ring 313 to suck the liquid. At this time, the one-way flow mechanism 3 located in the liquid storage tube 102 is in a closed state. When the piston 211 moves to the right, the one-way flow mechanism 3 in the liquid storage tube 102 is opened, and the liquid inlet tube 103 is closed. The one-way flow mechanism 3 in the piston 211 is closed, so that the liquid can only flow in the specified direction and will not flow in the opposite direction, thereby maintaining the stability of the liquid flow in the system and the normal working order, helping to maintain the pressure in a specific area of ​​the system and preventing the pressure from being lost due to backflow. When the piston 211 needs to be lubricated, the oil inlet bolt 221 is opened, the lubricating oil is injected into the liquid storage tube 102, and then the oil inlet bolt 221 is screwed on. At this time, the piston 211 continues to move and the lubricating oil can be automatically and evenly applied to the piston 211. When the piston 211 moves to the right, the diaphragm 213 will fold and shrink under the action of the piston 211. When the piston 211 moves to the left, the diaphragm 213 will automatically stretch, thereby preventing the lubricating oil on the piston 211 from contaminating the liquid in the liquid storage tube 102, ensuring that the transported liquid is not contaminated by the lubricating oil, maintaining the original properties and quality of the liquid, and preventing the performance of the liquid from changing due to the contamination of the lubricating oil, such as viscosity, chemical properties, etc., thereby ensuring the normal operation and working efficiency of the entire system.

[0045] In the description of this specification, the description with reference to the terms "one embodiment", "example", "specific example", etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the utility model. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0046] The preferred embodiments of the utility model disclosed above are only used to help explain the utility model. The preferred embodiments do not describe all the details in detail, nor do they limit the utility model to the specific implementation methods described. Obviously, many modifications and changes can be made according to the content of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the utility model, so that technicians in the relevant technical field can well understand and use the utility model. The utility model is limited only by the claims and their full scope and equivalents.

Claims

1. A lubricating and sealing device for the hydraulic end of a plunger pump, comprising a rectangular bottom plate (1), characterized in that: The rectangular bottom plate (1) is provided with a sealing and lubricating mechanism (2), a one-way circulation mechanism (3) and a driving mechanism (4); A plurality of support frames (101) are fixedly connected to the top of the rectangular bottom plate (1), a liquid storage tube (102) is fixedly connected to the top of the two support frames (101) located at the front side, and a liquid inlet tube (103) is fixedly connected to the top of the support frame (101) located at the rear side, the front side of the liquid inlet tube (103) is connected to the liquid storage tube (102), a piston shaft (104) is rotatably penetrated on the left outer wall of the liquid storage tube (102), and the sealing and lubricating mechanism (2) comprises a sealing component (21) and a lubricating component (22), and the sealing component (21) comprises a piston (211) slidably connected to the inner wall of the liquid storage tube (102).

2. A lubricating and sealing device for the hydraulic end of a plunger pump according to claim 1, characterized in that: A fixing ring (212) is fixedly connected to the inner wall of the liquid storage tube (102), a diaphragm (213) is fixedly connected to the inner wall of the fixing ring (212), and the left side of the diaphragm (213) is fixedly connected to the piston (211).

3. A lubricating and sealing device for the hydraulic end of a plunger pump according to claim 2, characterized in that: A plurality of annular grooves (214) are provided on the outer wall of the piston (211), a plurality of sealing rings (215) are provided on the inner walls of the plurality of annular grooves (214), and the outer walls of the plurality of sealing rings (215) are slidably connected to the liquid storage tube (102).

4. A lubricating and sealing device for the hydraulic end of a plunger pump according to claim 3, characterized in that: The lubrication assembly (22) comprises an oil inlet bolt (221) threadedly penetrating the outer wall of the front side of the liquid storage tube (102); a second sealing ring (222) is fixedly connected to the outer wall of the oil inlet bolt (221); and the rear side of the second sealing ring (222) is in contact with the liquid storage tube (102).

5. A lubricating and sealing device for the hydraulic end of a plunger pump according to claim 4, characterized in that: The one-way circulation mechanism (3) comprises a support assembly (31) and a one-way circulation assembly (32); the support assembly (31) comprises a cross support frame (311) respectively fixedly connected to the inner walls of the liquid storage tube (102) and the liquid inlet tube (103); a clamping ring (312) is provided inside the liquid storage tube (102) and the liquid inlet tube (103); a sealing ring (313) is fixedly connected to the outer walls of the two clamping rings (312); and the outer walls of the two sealing rings (313) are respectively fixedly connected to the liquid storage tube (102) and the liquid inlet tube (103).

6. A lubricating and sealing device for the hydraulic end of a plunger pump according to claim 5, characterized in that: The one-way circulation assembly (32) comprises telescopic rods (321) respectively fixedly connected to a side of the cross support frame (311) close to the clamping ring (312); one end of the two telescopic rods (321) away from the cross support frame (311) is fixedly connected to a connecting block (322); the two telescopic rods (321) are respectively sleeved with a spring (323); the top and the end of the two springs (323) are respectively fixedly connected to the two cross support frames (311) and the two connecting blocks (322).

7. A lubricating and sealing device for the hydraulic end of a plunger pump according to claim 6, characterized in that: The driving mechanism (4) comprises a support plate (401) fixedly connected to the top of the rectangular bottom plate (1), and a rotating shaft (402) rotatably penetrates through the support plate (401).

8. A lubricating and sealing device for the hydraulic end of a plunger pump according to claim 7, characterized in that: A motor (403) is fixedly connected to the front extension of the rotating shaft (402), a rotating disk (404) is fixedly connected to the rear extension of the rotating shaft (402), a connecting rod (405) is hingedly provided on the back of the rotating disk (404), and the end of the connecting rod (405) is hingedly connected to the piston shaft (104).

Images