Plunger butt joint type spinner split pump head assembly

Abstract

The invention discloses a plunger butt joint type spinner split pump head assembly which is used for conveying media and belongs to the technical field of plunger pumps, the plunger butt joint type spinner split pump head assembly comprises a pump head and a plunger rod installed in the pump head, a first pump body is arranged on one side of the pump head, a second pump body is arranged on the outer side of the first pump body, and the first pump body and the second pump body are fixedly connected through a spinner. A concave hole is formed in the side face of the rotary buckle. According to the device, the plunger rod can be integrally detached along with the pump head, and the problem that the pump head is difficult to maintain due to the fact that the plunger rod is fixedly connected with the plunger is effectively solved.

Description

Technical Field

[0001] The invention belongs to the technical field of plunger pumps, and in particular relates to a plunger docking type rotary buckle split pump head assembly. Background Art

[0002] The plunger rod plunger pump head technology involves high-pressure fluid transmission. Its working principle is based on the reciprocating motion of the plunger in the pump cylinder to achieve the suction and discharge of liquid. The plunger pump is suitable for high-pressure liquid transportation and has the characteristics of small flow, high pressure and good stability. The pump head is flexible in design and can use different materials and structures according to different conveying media to meet different process requirements. Plunger pumps are widely used in petrochemical, food and medicine, environmental protection and sewage treatment and other fields. Due to their high efficiency, stability and durability, they have become the core power of industrial fluid transmission. However, the existing technology has the problem that the plunger rod cannot be disassembled with the pump head, which makes the plunger rod and pump head difficult to maintain.

[0003] Application No. US16874816 discloses a plunger pump hydraulic end assembly structure, including a valve housing assembly, an air suction gland and an air suction cap. The air suction gland is connected to the air suction cap, and the air suction gland is connected to the valve housing assembly through the air suction packing seal assembly. This structure adopts an O-ring or D-ring sealing form through the suction packing seal assembly, and its sealing performance is better, more resistant to high pressure and fluid erosion, and can meet the current requirements of high-pressure and large-displacement continuous operation, reducing the wear of the vacuum gland and / or the valve body, thereby effectively extending the service life of the piston. This patent still has room for improvement.

[0004] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solutions of the present application and facilitating the understanding of those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art simply because they are described in the background technology section of the present application. Summary of the invention

[0005] In view of the problems existing in the prior art, the present invention provides a plunger-jointed screw-on split pump head assembly for transporting a medium. The device can disassemble the plunger rod together with the pump head, effectively solving the problem of difficulty in maintaining the pump head due to the fixed connection between the plunger rod and the plunger.

[0006] In order to solve the above technical problems, the present invention specifically provides the following technical solutions: A plunger-butted, screw-on split pump head assembly comprises a pump head and a plunger rod installed in the pump head, a first pump body is arranged on one side of the pump head, a second pump body is arranged on the outer side of the first pump body, the first pump body and the second pump body are fixedly connected by a screw-on, and a concave hole is arranged on the side of the screw-on.

[0007] According to one embodiment of the present invention, a through hole cooperating with the plunger rod is provided on the first pump body and the second pump body, and the through hole is coaxial with the plunger rod. A peephole is provided on the side of the first pump body, and the axis of the peephole is perpendicular to the axis of the plunger rod. The outer sides of the ends of the first pump body and the second pump body are provided with a threaded protrusion surrounding the first pump body and the second pump body, and the inner side of the screw buckle has a groove cooperating with the threaded protrusion. A pump body is provided between the first pump body and the pump head, and the pump body is threadedly connected to the first pump body.

[0008] The first pump body and the second pump body are mutually interlocking column sleeves. The contact end of the first pump body and the second pump body has two oppositely arranged square protrusions extending axially outward. The second pump body is provided with a groove that matches the square protrusion. During installation, the first pump body and the second pump body are mutually interlocked, and the square protrusion goes deep into the groove, so that the first pump body can avoid relative rotation with the second pump body, and the protrusion can be used as an installation positioning component to avoid installation misalignment. Since the plunger rod is installed at the central axis position of the two pump bodies, there is a space between the plunger rod and the arc-shaped surface at the bottom of the two pump bodies. The space can collect the waste lubricating grease that falls on the plunger rod and the metal residues and other garbage that may be generated by friction during the operation of the equipment. The waste lubricating grease will be mixed with metal debris and other garbage, so that it cannot contact and rub with the components in the pump chamber for a long time, avoiding its influence on the operation of the equipment and causing continuous wear to the components in the pump chamber, and it is also convenient for personnel to clean and maintain. The pump head is square and the pump body is cylindrical. This shape combination ensures that the installation between the pump bodies is convenient and quick while maintaining the stability of the plunger pump. You only need to match the square protrusion with the groove and then tighten the two pump bodies with the screw. The peephole design allows personnel to observe the state of the lubricating oil in the pump cavity through the peephole to determine whether cleaning and maintenance are required. At the same time, when the lubricating grease deteriorates, it will emit a pungent or abnormal odor. When the lubricating grease in the pump cavity deteriorates, the odor can be discharged in large quantities through the peephole, alerting personnel to clean and maintain the plunger pump in time.

[0009] According to one embodiment of the present invention, the side array of the turnbuckle is provided with a tensioning screw, and the tensioning screw is coaxial with the concave hole.

[0010] When installing the first pump body and the second pump body, firstly, the turn button is installed in cooperation with the first pump body and the second pump body, so that the first pump body and the second pump body are connected together. Since the turn button is provided with a groove that matches the threaded structure on the first pump body and the second pump body, the inner wall of the groove and the threaded protrusions on the two pump bodies are in contact with each other, and the tensioning screw passes through the side wall of the turn button and communicates with the internal groove. After tightening the tightening screw, the screw rod will press against the threaded protrusion corresponding to the inner wall of the turn button groove. Continuously tightening the tightening screw will increase the gap between the threaded protrusion and the contact surface of the turn button, and increase the friction between the turn button and the two pump bodies, thereby achieving the tightening effect, avoiding the problem that the threaded connection of the two pump bodies may not be firm when using the turn button in a single way. At the same time, during the operation of the plunger pump, continuous vibration will be generated, and this vibration may also loosen the connection between the components. The tensioning screw is designed as an array relative to the central axis of the turn button, and exerts a tightening effect on the turn button and the two pump bodies from multiple angles, thereby avoiding the loosening of the turn button caused by the vibration of the plunger pump to the greatest extent.

[0011] According to one embodiment of the present invention, one end of the plunger rod is connected to a plunger rod seat, the plunger rod seat is a column, one end of the column is axially inwardly provided with a groove, the plunger rod is installed in the groove, the other end of the column is connected to a plunger, and one end of the plunger connected to the column is axially inwardly provided with a mounting base hole. The mounting base hole is a cylindrical groove, two rectangular notches are arranged on the side wall of the cylindrical groove, and a pin hole is arranged on the outside of the cylindrical groove. A rod body is extended axially outward from one end of the plunger rod seat connected to the plunger, and a block that matches the rectangular notch protrudes radially outward from the rod body. A hole body is arranged on the side wall of the rod body, the hole body is coaxial with the pin hole, and a shoulder screw is arranged on the pin hole.

[0012] The power mechanism pushes the plunger rod, thereby pushing the plunger, causing the plunger to move in one direction, resulting in negative pressure in the working chamber. The working chamber is provided with oil pipes in the direction of both ends of the pump head, and the oil pipes are connected to the outside world, so that the liquid is sucked into the cylinder; when the plunger finishes a stroke and moves in another direction, the liquid is compressed, and the liquid sucked into the cylinder is discharged. As the plunger continuously reciprocates, continuous oil supply is achieved. The plunger rod is fixedly connected to the plunger rod seat. The fixing methods of the plunger rod and the plunger rod seat include but are not limited to welding, threading, heat fitting, bonding, etc. Insert the rod body extending from the end of the plunger rod seat into the mounting base hole, and then screw the shoulder screw through the pin hole into the hole on the side wall of the rod body on one side of the middle plunger rod seat. The cooperation of the peephole and the shoulder screw makes it unnecessary to disassemble the plunger pump in sequence. The shoulder screw can be removed through the peephole first, and then the pump head can be removed. After removing the pump head, the pump head and the plunger rod can be removed at the same time. When installing, the pump head can be installed first, and the plunger rod can be aligned with the plunger rod seat. After the pump head is fixed, the plunger rod can be fixed to the plunger rod seat with the shoulder screw. This prevents the problem of uneven force on the connection between the plunger rod and the plunger rod seat due to the left and right shaking of the pump head after the plunger rod and the plunger rod seat are fixed first, which may cause increased wear or even damage to the connection. In addition, the rectangular notch on the plunger rod and the block on the plunger rod seat that is installed in cooperation with the rectangular notch can also prevent the plunger from rotating relative to the plunger rod. When working, the plunger moves axially in the pump chamber, and the rotation of the plunger in the pump chamber will cause the plunger to be subjected to a force perpendicular to the axial translation. The intersection of these two forces will accelerate the wear of the plunger.

[0013] Compared with the prior art, the present invention has the following beneficial effects: The space between the plunger rod and the two pump bodies can collect the waste lubricating grease that falls on the plunger rod and the metal debris and other garbage that may be generated by friction during the operation of the equipment, so as to avoid affecting the operation of the equipment and causing continuous wear and noise to the components in the pump chamber, and also facilitate cleaning and maintenance. Personnel can observe the state of the lubricating oil in the pump chamber through the peephole to determine whether cleaning and maintenance are required. At the same time, when the lubricating grease in the pump chamber deteriorates, the odor can be discharged from the peephole to warn personnel to clean and maintain the plunger pump in time. The design of the tensioning screw can minimize the loosening of the screw caused by the vibration of the plunger pump. The plunger rod and the plunger rod seat can be fixed after the pump head is installed to prevent the problem of uneven force on the connection between the plunger rod and the plunger rod seat caused by the shaking of the pump head when the pump head is installed. The plunger cannot rotate relative to the plunger rod, avoiding the problem of increased wear of the plunger caused by the impact of axial force and rotational force. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] In order to more clearly illustrate the implementation methods of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the implementation methods or the description of the prior art. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0015] Figure 1 It is a schematic diagram of the plunger docking type twist-lock split pump head assembly scheme of the present invention; Figure 2 It is a schematic cross-sectional view of the plunger-butted twist-lock split pump head assembly of the present invention; Figure 3 It is a cross-sectional schematic diagram of the cooperation between the plunger rod and the pump head of the present invention; Figure 4 It is a schematic diagram of the plunger rod scheme of the present invention; Figure 5 It is a schematic diagram of the plunger rod connection scheme of the present invention; Figure 6 It is a schematic cross-sectional view of the plunger rod of the present invention.

[0016] Figure numbers: 10-pump body; 101-first pump body; 102-second pump body; 103-peephole; 20-turn buckle; 201-tensioning screw; 30-pump head; 301-seal; 302-working chamber; 401-plunger; 402-plunger rod; 403-plunger rod seat; 404-shoulder screw; 405-pin hole; 406-mounting base hole. DETAILED DESCRIPTION

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] The following first describes the concepts involved in the present application in conjunction with the accompanying drawings. It should be noted that the following description of each concept is only to make the content of the present application easier to understand, and does not limit the scope of protection of the present application; at the same time, the embodiments and features in the embodiments of the present application can be combined with each other in the absence of conflict. The present application will be described in detail with reference to the accompanying drawings and in conjunction with the embodiments.

[0019] Embodiment 1 See attached Figure 1-Figure 6As shown, a plunger-butted screw-on split pump head assembly includes a pump head 30 and a plunger rod 402 installed in the pump head 30, a first pump body 101 is provided on one side of the pump head 30, a second pump body 102 is provided on the outer side of the first pump body 101, the first pump body 101 and the second pump body 102 are fixedly connected by a screw-on 20, and a concave hole is provided on the side of the screw-on 20.

[0020] The first pump body 101 and the second pump body 102 are provided with through holes that match the plunger rod 402, and the through holes are coaxial with the plunger rod 402. A peephole 103 is provided on the side of the first pump body 101, and the axis of the peephole 103 is perpendicular to the axis of the plunger rod 402. The outer sides of the ends of the first pump body 101 and the second pump body 102 are provided with threaded protrusions surrounding the first pump body 101 and the second pump body 102, and the inner side of the turn buckle 20 has a groove that matches the threaded protrusion. A pump body 10 is provided between the first pump body 101 and the pump head 30, and the pump body 10 is threadedly connected to the first pump body 101.

[0021] The first pump body 101 and the second pump body 102 are mutually interlocking column sleeves. The contact end of the first pump body 101 and the second pump body 102 extends axially outward with two oppositely arranged square protrusions. The second pump body 102 is provided with a groove that matches the square protrusion. During installation, the first pump body 101 and the second pump body 102 are mutually interlocked, and the square protrusion goes deep into the groove, so that the first pump body 101 can avoid relative rotation with the second pump body 102, and the protrusion can be used as an installation positioning component to avoid the occurrence of installation misalignment. Since the plunger rod 402 is installed at the central axis position of the two pump bodies, there is a space between the plunger rod 402 and the arc-shaped surface at the bottom of the two pump bodies. The space can collect the waste lubricating grease falling on the plunger rod 402 and the metal debris and other garbage that may be generated by friction during the operation of the equipment. The waste lubricating grease will be mixed with the metal residue and other garbage, so that it cannot contact and rub with the components in the pump chamber for a long time, avoiding its influence on the operation of the equipment and causing continuous wear to the components in the pump chamber, and it is also convenient for personnel to clean and maintain. Meanwhile, the pump head 30 is square and the pump body is cylindrical. This shape matching can ensure that the installation between the pump bodies is convenient and quick while maintaining the placement stability of the plunger pump. It is only necessary to match the square protrusion with the groove for installation, and then fasten the two pump bodies by the turn buckle 20. The design of the peephole 103 allows personnel to observe the state of the lubricating oil in the pump cavity through the peephole 103 to determine whether cleaning and maintenance are required. At the same time, when the lubricating grease deteriorates, it will emit a pungent or abnormal odor. When the lubricating grease in the pump cavity deteriorates, the odor can be discharged in large quantities through the peephole 103, alerting personnel to clean and maintain the plunger pump in time.

[0022] A tensioning screw 201 is arranged in an array on the side of the turn button 20 , and the tensioning screw 201 is coaxial with the concave hole.

[0023] When installing the first pump body 101 and the second pump body 102, first install the turn buckle 20 in cooperation with the first pump body 101 and the second pump body 102 to connect the first pump body 101 and the second pump body 102 together. Since the turn buckle 20 is provided with a groove that cooperates with the threaded structure on the first pump body 101 and the second pump body 102, the inner wall of the groove and the threaded protrusions on the two pump bodies contact each other, and the tensioning screw 201 passes through the side wall of the turn buckle and communicates with the internal groove. After tightening the tensioning screw 201, the screw rod will press against the threaded protrusion that contacts the corresponding inner wall of the turn buckle groove. Continuously tightening the tensioning screw 201 will increase the gap between the threaded protrusion and the contact surface of the turn buckle, and increase the friction between the turn buckle 20 and the two pump bodies, thereby achieving a tightening effect and avoiding the problem that the threaded connection of the two pump bodies using the turn buckle 20 in a single way may not be firm. At the same time, during the operation of the plunger pump, continuous vibration will be generated, which may also loosen the connection between the components. The tensioning screws are designed in an array relative to the central axis of the turnbuckle, exerting a tightening effect on the turnbuckle 20 and the two pump bodies from multiple angles, thereby minimizing the loosening of the turnbuckle 20 caused by the vibration of the plunger pump.

[0024] One end of the plunger rod 402 is connected to a plunger rod seat 403. The plunger rod seat 403 is a column. One end of the column is provided with a groove axially inward. The plunger rod 402 is installed in the groove. The other end of the column is connected to a plunger 401. The plunger 401 is connected to one end of the column and is provided with a mounting base hole 406 axially inward. The mounting base hole 406 is a cylindrical groove. Two rectangular notches are arranged opposite to each other on the side wall of the cylindrical groove. A pin hole 405 is arranged on the outer side of the cylindrical groove. A rod body is extended axially outward from one end of the plunger rod seat 403 connected to the plunger 401. A block that matches the rectangular notch protrudes radially outward from the rod body. A hole body is arranged on the side wall of the rod body. The hole body is coaxial with the pin hole 405. A shoulder screw 404 is arranged on the pin hole 405.

[0025] The power mechanism pushes the plunger rod 402, thereby pushing the plunger 401, so that the plunger 401 moves in one direction, resulting in negative pressure in the working chamber 302. The working chamber 302 is provided with oil pipes in the directions of both ends of the pump head 30, and the oil pipes are connected to the outside world, so that the liquid is sucked into the cylinder; when the plunger 401 moves in another direction after one stroke, the liquid is compressed, and the liquid sucked into the cylinder is discharged. Since the plunger 401 continuously reciprocates, continuous oil supply is achieved. The plunger rod 402 is fixedly connected to the plunger rod seat 403. The fixing methods of the plunger rod 402 and the plunger rod seat 403 include but are not limited to welding, threading, heat fitting, bonding, etc. The rod body extending from the end of the plunger rod seat 403 is inserted into the mounting base hole 406, and then the shoulder screw 404 is screwed into the hole of the rod body side wall on one side of the middle plunger rod seat 403 through the pin hole 405. The cooperation between the peephole 103 and the shoulder screw 404 makes it unnecessary to disassemble the plunger pump in sequence. The shoulder screw 404 can be removed through the peephole 103 first, and then the pump head 30 can be removed. After the pump head 30 is removed, the pump head 30 and the plunger rod 402 can be removed at the same time. When installing, the pump head 30 can be installed first, and the plunger rod 402 and the plunger rod seat 403 can be aligned and installed. After the pump head 30 is fixed, the plunger rod 402 and the plunger rod seat 403 can be fixed with the shoulder screw 404. After the plunger rod 402 and the plunger rod seat 403 are fixed first, when the pump head 30 is installed, the left and right shaking of the pump head 30 causes uneven force on the connection part between the plunger rod 402 and the plunger rod seat 403, which may cause increased wear or even damage to the connection part. In addition, the rectangular notch on the plunger rod 402 and the block on the plunger rod seat 403 that is installed in cooperation with the rectangular notch can also prevent the plunger 401 from rotating relative to the plunger rod 402. When working, the plunger 401 translates axially in the pump chamber, and the rotation of the plunger 401 in the pump chamber will cause the plunger 401 to be subjected to a force perpendicular to the axial translation. The intersection of these two forces will accelerate the wear of the plunger 401.

[0026] At the same time, it should be noted that in the present embodiment, the number of plunger rod assemblies consisting of the plunger rod 402, the plunger rod seat 403 and the plunger 401 installed in the plunger pump is 1-4 groups, but the present technical solution is not limited to 1-4 groups, for example, it can be 1 group, 2 groups, 3 groups, 4 groups, 5 groups, 6 groups, 7 groups, 8 groups, 9 groups, 10 groups, 11 groups... In actual production work, according to different production needs, different numbers of plunger rod assemblies can be selected to be installed and used in conjunction with the plunger pump.

[0027] The embodiments and / or implementation methods described above are only used to illustrate the preferred embodiments and / or implementation methods for realizing the technology of the present invention, and are not intended to limit the implementation methods of the technology of the present invention in any form. Any technical personnel in this field may make slight changes or modifications to other equivalent embodiments without departing from the scope of the technical means disclosed in the content of the present invention, but they should still be regarded as technologies or embodiments that are essentially the same as the present invention. This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and its core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the concept and technical solution of the invention to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A plunger-jointed twist-on split pump head assembly, comprising a pump head (30) and a plunger rod (402) installed in the pump head (30), Features: A first pump body (101) is provided on one side of the pump head (30), a second pump body (102) is provided on the outside of the first pump body (101), the first pump body (101) and the second pump body (102) are fixedly connected via a turnbuckle (20), and a concave hole is provided on a side surface of the turnbuckle (20).

2. The plunger-jointed twist-on split pump head assembly according to claim 1, characterized in that: The first pump body (101) and the second pump body (102) are provided with a through hole that cooperates with the plunger rod (402), and the through hole is coaxial with the plunger rod (402).

3. The plunger-jointed twist-on split pump head assembly according to claim 1, characterized in that: A peephole (103) is provided on the side of the first pump body (101), and the axis of the peephole (103) is perpendicular to the axis of the plunger rod (402).

4. The plunger-jointed twist-on split pump head assembly according to claim 1, characterized in that: The outer sides of the ends of the first pump body (101) and the second pump body (102) are both provided with threaded protrusions surrounding the first pump body (101) and the second pump body (102), and the inner side of the turn buckle (20) is provided with a groove matching the threaded protrusion.

5. The plunger-jointed twist-on split pump head assembly according to claim 1, characterized in that: A pump body (10) is provided between the first pump body (101) and the pump head (30), and the pump body (10) is threadedly connected to the first pump body (101).

6. The plunger-jointed twist-on split pump head assembly according to claim 1, characterized in that: The side array of the turn button (20) is provided with tensioning screws (201), and the tensioning screws (201) are coaxial with the concave hole.

7. The plunger-jointed twist-on split pump head assembly according to claim 1, characterized in that: One end of the plunger rod (402) is connected to a plunger rod seat (403), the plunger rod seat (403) is a column, one end of the column is provided with a groove axially inward, the plunger rod (402) is installed in the groove, the other end of the column is connected to a plunger (401), and one end of the plunger (401) connected to the column is provided with a mounting base hole (406) axially inward.

8. The plunger-jointed twist-on split pump head assembly according to claim 7, characterized in that: The mounting base hole (406) is a cylindrical groove, two rectangular notches are arranged opposite to each other on the side wall of the cylindrical groove, and a pin hole (405) is arranged on the outer side of the cylindrical groove.

9. The plunger-jointed twist-on split pump head assembly according to claim 8, characterized in that: The plunger rod seat (403) is connected to the plunger (401) at one end, and a rod body is axially extended outwards, and a block that matches the rectangular notch is radially protruded outwards from the rod body.

10. The plunger-jointed twist-on split pump head assembly according to claim 9, characterized in that: The side wall of the rod body is provided with a hole, the hole is coaxial with the pin hole (405), and the pin hole (405) is provided with a shoulder screw (404).

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