Detachable pump head structure with split connecting block

Abstract

The utility model discloses a detachable pump head structure with a split connecting block, which belongs to the technical field of plunger pumps, and comprises a pump head and a pump body connected with the pump head in a matching manner, the pump body is arranged between the pump head and the pump body, the pump body and the pump body are fixedly connected through a connecting block, a plunger rod is arranged in the pump head, and one end part of the plunger rod is movably connected with a plunger. According to the structure, the pump head and the plunger rod of the plunger pump can be integrally detached, and the technical problem that the pump head and the plunger rod are difficult to replace and maintain is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of plunger pumps, in particular to a detachable pump head structure with a split connection block. Background Art

[0002] A plunger pump is a common hydraulic pump that uses the reciprocating motion of a plunger within a cylinder to draw in and out liquid. The pump head structure is a key aspect of plunger pump design, allowing it to be maintained and replaced without disassembling the entire pump. This design improves pump maintenance efficiency and reduces repair time and costs. However, existing detachable pump head technologies often suffer from complex structures, high costs, and the inability to remove the plunger rod and plunger.

[0003] Application number WOJP05003374 discloses a reciprocating pump structure that enables a pump head component to be easily attached to and detached from a pump drive component. Means for solving the problem are formed on the pump head portion and the pump drive portion to assemble with each other, and a roughly U-shaped cutout portion that locks the narrowed portion of the foot to is formed in the connecting slider. Thus, the pump head is allowed to slide relative to the pump drive portion. Therefore, since the pump head can be easily attached to and detached from the pump drive portion, the pump head is made disposable. This patented technology still has room for improvement.

[0004] It should be noted that the above introduction to the technical background is merely intended to provide a clear and complete description of the technical solutions of this application and facilitate understanding by those skilled in the art. Simply because these solutions are described in the background technology section of this application, it should not be assumed that the above technical solutions are well known to those skilled in the art. Utility Model Content

[0005] In response to the problems existing in the prior art, the utility model provides a split connecting block detachable pump head structure, which can disassemble the pump head and plunger rod of the plunger pump as a whole, solving the technical problem of difficulty in replacing and maintaining the pump head and plunger rod.

[0006] In order to solve the above technical problems, the present invention specifically provides the following technical solutions:

[0007] A split connecting block detachable pump head structure includes: a pump head and a pump body connected to the pump head, a pump body is provided between the pump head and the pump body, and the pump body and the pump body are fixedly connected by a connecting block, a plunger rod is slidingly provided inside the pump head, and a plunger is movably connected to one end of the plunger rod.

[0008] According to one embodiment of the present invention, the pump body has a groove on the side opposite to the pump body, and the pump body has a protrusion that cooperates with the groove, and the groove and the protrusion cooperate and overlap. The connecting block is a plate body, and the connecting block includes a first plate body and a second plate body arranged vertically, the first plate body is located above the second plate body, and the second plate body is thicker than the first plate body.

[0009] A positioning groove is provided on the inner wall of the first plate body. The positioning groove is a trapezoidal groove longitudinally arranged on the first plate body. A positioning platform is provided at the contact point between the pump body and the first plate body. The positioning platform is a boss structure corresponding to the groove of the positioning groove. A first bolt through hole is provided inside the second plate body. The first bolt through hole is perpendicular to the axial direction of the positioning groove. The plunger rod is slidably connected to the pump head. The plunger rod and the plunger are longitudinally plug-in connected, and the plunger passes through the pump body. The plunger and the plunger rod are arranged in two groups, and the plunger and the plunger rod have different lengths. The connection point between the plunger and the plunger rod is located between the pump body and the pump body.

[0010] The pump body and the pump casing are fixed together by a connecting block, and a square notch with a thickness less than that of the pump body side wall is provided on the outer side of the pump body end. The connecting block is installed on the notch, and a second bolt is passed through the second bolt through-hole to fix the connecting block and the pump body. A first bolt through-hole is provided at the bottom of the connecting block, and the direction of the through-hole is perpendicular to the axial direction of the second bolt through-hole. The connecting block and the pump body are fixed with the first bolt, thereby realizing axial fixing forces in two different directions, firmly fixing the connecting block and the pump body together, and avoiding changes in the relative positions of the connecting block and the pump body.

[0011] At the same time, the connecting block is not completely aligned with the square notch of the pump body, but rather protrudes in the axial direction of the first bolt through-hole. The size of the protruding portion is consistent with the size of the fixed portion on the pump body. A positioning groove is provided on the inner side of the protruding portion, and a positioning platform is provided on the side of the end of the pump body. When fixing, the positioning groove and the positioning platform can be installed correspondingly to limit their lateral relative displacement. A third bolt coaxial with the positioning groove is provided at the top of the pump body, and a third bolt through-hole is provided at the corresponding position on the connecting block. In this way, fixing forces in two different directions are achieved to avoid relative displacement between the connecting block and the pump body. The connecting block is used to fix the pump body and the pump body as a whole, and their relative displacement is completely limited by bolts in the X, Y, and Z directions.

[0012] In addition, the plunger rod and the plunger are connected in a longitudinal plug-in manner. Specifically, the plunger rod extends axially outward from one end of the plunger rod away from the pump head to form a column with a diameter smaller than that of the plunger rod, and the column further extends outward to form a column with a diameter equal to that of the plunger rod. In this way, the end of the plunger rod has an annular notch, and the end where the plunger is connected to the plunger rod has a groove corresponding to the annular notch, and the groove is radially connected outward, so that the column assembly at the end of the plunger rod can be translated and installed into the groove of the plunger, thus realizing a longitudinal plug-in connection. The structure can be disassembled by sliding in the longitudinal direction. After removing the connecting block, the pump head, pump body and plunger rod can be directly removed together. Different models of pumps can be adapted to different movable plunger rods. The plunger rod can be taken out separately and replaced with a new one to continue working, avoiding the problem that the conventional integrated plunger rod is difficult to remove, reducing unplanned downtime and improving work efficiency. Since the power of the plunger pump is mainly provided by the motor, and the stability of the motor is closely related to its speed and the matching degree between the plunger pump flow rate and the plunger rod diameter, when the plunger rod stroke is constant, if the plunger rod diameter inside the plunger pump is low and the plunger pump flow rate is high, it is easy to cause the motor speed to be too high; if the plunger rod diameter inside the plunger pump is high and the plunger pump flow rate is low, it will cause the motor speed to be too low. Both situations may cause the motor to lose stability. Therefore, for actual production, a detachable pump head can be used to replace different specifications of plunger rods, pump heads and other components according to different flow requirements to achieve different energy transmission and save equipment procurement costs. In addition, the greater the viscosity of the fluid passing through the plunger pump, the worse the fluid flowability, and the greater the power required for the plunger to push the fluid; the smaller the viscosity of the fluid passing through the plunger pump, the better the fluid flowability, and the less power required for the plunger to push the medium. Personnel can choose to replace the appropriate plunger rod according to the different viscosities of the fluid to ensure the best matching between the plunger rod and the plunger pump. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] To more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are merely illustrative, and those skilled in the art can, without inventive effort, derive other implementation drawings based on the provided drawings.

[0014] Figure 1 This is a schematic diagram of the detachable pump head structure of the utility model;

[0015] Figure 2 This is a schematic diagram of the installation scheme of the detachable pump head of the utility model;

[0016] Figure 3 This is a schematic diagram of the connection block scheme of the utility model;

[0017] Figure 4 This is a schematic diagram of the pump body scheme of the utility model;

[0018] Figure 5 This is a schematic diagram of the plunger rod connection scheme of the utility model.

[0019] Figure numbers: 10-pump body; 101-plunger; 102-plunger rod; 20-pump body; 201-connecting block; 202-first bolt; 203-second bolt; 204-third bolt; 205-positioning groove; 206-first bolt through hole; 207-second bolt through hole; 208-third bolt through hole; 30-pump head; 301-positioning platform.

[0020] 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 embodiments described 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 making creative efforts are within the scope of protection of the present invention.

[0021] The following first describes the concepts involved in this application with reference to the accompanying drawings. It should be noted that the following description of each concept is intended only to make the content of this application easier to understand and does not limit the scope of protection of this application. At the same time, the embodiments and features in the embodiments of this application can be combined with each other unless there is a conflict. The following detailed description of this application will be made with reference to the accompanying drawings and in conjunction with the embodiments.

[0022] Example 1:

[0023] See attached Figure 1-Figure 5 As shown, a split connecting block detachable pump head structure includes: a pump head 30 and a pump body 10 connected to the pump head 30, a pump body 20 is provided between the pump head 30 and the pump body 10, and the pump body 20 and the pump body 10 are fixedly connected by a connecting block 201, a plunger rod 102 is slidingly provided inside the pump head 30, and a plunger 101 is movably connected to one end of the plunger rod 102.

[0024] The pump body 10 has a groove on the side opposite the pump body 20. The pump body 20 has a protrusion that mates with the groove, and the groove and the protrusion mate and overlap. The connecting block 201 comprises a first plate and a second plate arranged one above the other, with the first plate positioned above the second plate, and the second plate being thicker than the first plate. A positioning groove 205 is provided on the inner wall of the first plate. The positioning groove 205 is a trapezoidal groove longitudinally arranged on the first plate. A positioning platform 301 is provided at the contact point between the pump body 20 and the plate. The positioning platform 301 is a boss structure corresponding to the groove of the positioning groove 205. A first bolt hole 206 is provided within the second plate, and the first bolt hole 206 is axially perpendicular to the positioning groove 205. The plunger rod 102 is slidably connected to the pump head 30. The plunger rod 102 and the plunger 101 are connected longitudinally by a plug-in connection, and the plunger 101 passes through the pump body 10. The plungers 101 and plunger rods 102 are arranged in two sets, and the plungers 101 and plunger rods 102 are of different lengths. The connection portion between the plunger 101 and the plunger rod 102 is located between the pump body 10 and the pump body 20 .

[0025] The pump body 10 and the pump body 20 are fixed together by the connecting block 201. A square notch with a thickness less than the thickness of the side wall of the pump body 10 is opened on the outer side of the end of the pump body 10. The connecting block 201 is installed on the notch. The second bolt 203 is passed through the second bolt through hole 207 to fix the connecting block 201 and the pump body 10. A first bolt through hole 206 is opened at the bottom of the connecting block 201. The direction of the through hole is axially perpendicular to the second bolt through hole 207, and the first bolt 202 is used to fix the connecting block 201 and the pump body 10. In this way, axial fixing forces in two different directions are realized, and the connecting block 201 and the pump body 10 are firmly fixed together to avoid changes in the relative position of the connecting block 201 and the pump body 10.

[0026] At the same time, the connecting block 201 is not completely aligned with the square notch of the pump body 10, but rather protrudes in the axial direction of the first bolt through hole 206. The size of the protruding portion is consistent with the size of the fixed portion on the pump body 10. The positioning groove 205 is provided on the inner side of the protruding portion. A positioning platform 301 is provided on the side of the end of the pump body 20. When fixed, the positioning groove 205 and the positioning platform 301 can be installed correspondingly to limit their lateral relative displacement. A third bolt 204 is provided at the top of the pump body 20 in the same direction as the positioning groove 205, and a third bolt through hole 208 is provided at the corresponding position on the connecting block 201. In this way, fixing forces in two different directions are achieved to avoid relative displacement between the connecting block 201 and the pump body 20. The connecting block 201 is used to fix the pump body 10 and the pump body 20 as a whole, and their relative displacement is completely limited by bolts in the X, Y, and Z directions.

[0027] In addition, the plunger rod 102 and the plunger 101 are connected in a longitudinal plug-in manner. Specifically, the plunger rod 102 extends axially outward from one end of the plunger rod 102 away from the pump head 30 to form a cylindrical body with a diameter smaller than that of the plunger rod 102. The cylindrical body further extends outward to form a cylindrical body with a diameter equal to that of the plunger rod 102. In this way, the end of the plunger rod 102 has an annular notch, and the end where the plunger 101 is connected to the plunger rod 102 has a groove corresponding to the annular notch, and the groove is radially connected outward, so that the cylindrical assembly at the end of the plunger rod 102 can be installed in a translational manner into the groove of the plunger, thus realizing a longitudinal plug-in connection. This structure can be disassembled by sliding in the longitudinal direction. After removing the connecting block 201, the pump head 30, the pump body 20 and the plunger rod 102 can be directly removed together. Different models of pumps can be adapted to different movable plunger rods 102. The plunger rod 102 can be taken out separately and replaced with a new one to continue working, avoiding the problem of difficult removal of the conventional integrated plunger rod 102, reducing unplanned downtime and improving work efficiency.

[0028] Since the power of the plunger pump is mainly provided by the motor, and the stability of the motor is closely related to its speed and the matching degree between the plunger pump flow rate and the diameter of the plunger rod 102, when the plunger rod 102 stroke is constant, if the plunger rod 102 diameter in the plunger pump is low and the plunger pump flow rate is high, it is easy to cause the motor speed to be too high; if the plunger rod 102 diameter in the plunger pump is high and the plunger pump flow rate is low, it will cause the motor speed to be too low. Both situations may cause the motor to lose stability. Therefore, for actual production, the detachable pump head 30 can be used to replace plunger rods, pump heads and other components of different specifications according to different flow requirements, so as to achieve different energy transmission and save equipment procurement costs. Moreover, the greater the viscosity of the fluid passing through the plunger pump, the worse the fluid fluidity, and the greater the power required for the plunger 101 to push the fluid; the smaller the viscosity of the fluid passing through the plunger pump, the better the fluid fluidity, and the smaller the power required for the plunger 101 to push the medium. Personnel can choose to replace the appropriate plunger rod according to the different viscosities of the fluid to ensure the best matching state between the plunger rod 102 and the plunger pump.

[0029] At the same time, it should be noted that in this embodiment, the number of plunger rod assemblies consisting of the plunger rod 102 and the plunger 101 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 for installation and use in conjunction with the plunger pump.

[0030] 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 person skilled in the art 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.

[0031] 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 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, there are objectively infinite specific structures. For ordinary technicians in this technical field, without departing from the principles of this application, they can make several improvements, modifications or changes, 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 utility model to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A detachable pump head structure with a split connection block, comprising: A pump head (30) and a pump body (10) cooperatively connected to the pump head (30), The invention is characterized in that a pump body (20) is provided between the pump head (30) and the pump body (10); the pump body (20) and the pump body (10) are fixedly connected via a connecting block (201); a plunger rod (102) is slidably provided inside the pump head (30); and one end of the plunger rod (102) is movably connected to a plunger (101).

2. A detachable pump head structure with a split connection block according to claim 1, characterized in that: The pump body (10) has a groove on a side surface relative to the pump body (20), and the pump body (20) has a protrusion that matches the groove, and the groove and the protrusion are overlapped with each other.

3. The detachable pump head structure with split connection block according to claim 1, characterized in that: The connecting block (201) comprises a first plate body and a second plate body arranged up and down, the first plate body is located above the second plate body, and the thickness of the second plate body is greater than the thickness of the first plate body.

4. The detachable pump head structure with split connection block according to claim 3, characterized in that: A positioning groove (205) is provided on the inner side wall of the first plate body, and the positioning groove (205) is a trapezoidal groove longitudinally arranged on the first plate body.

5. The detachable pump head structure with split connection block according to claim 4, characterized in that: A positioning platform (301) is provided at the contact portion between the pump body (20) and the plate body. The positioning platform (301) is a boss structure corresponding to the groove of the positioning slot (205).

6. The detachable pump head structure with split connection block according to claim 4, characterized in that: A first bolt through hole (206) is provided inside the second plate body, and the first bolt through hole (206) is axially perpendicular to the positioning groove (205).

7. The detachable pump head structure with split connection block according to claim 1, characterized in that: The plunger rod (102) is slidably connected to the pump head (30), the plunger rod (102) is longitudinally plug-in connected to the plunger (101), and the plunger (101) passes through the pump body (10).

8. The detachable pump head structure with split connection block according to claim 7, characterized in that: The plunger (101) and the plunger rod (102) are arranged in two groups, and the plunger (101) and the plunger rod (102) have different lengths.

9. The split connection block detachable pump head structure according to claim 1, characterized in that: The connection portion between the plunger (101) and the plunger rod (102) is located between the pump body (10) and the pump body (20).

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