CN212656967U - Emulsion plunger pump and pump head assembly thereof - Google Patents
Emulsion plunger pump and pump head assembly thereof Download PDFInfo
- Publication number
- CN212656967U CN212656967U CN202021477350.4U CN202021477350U CN212656967U CN 212656967 U CN212656967 U CN 212656967U CN 202021477350 U CN202021477350 U CN 202021477350U CN 212656967 U CN212656967 U CN 212656967U
- Authority
- CN
- China
- Prior art keywords
- liquid discharge
- assembly
- liquid
- pump head
- valve
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Details Of Reciprocating Pumps (AREA)
Abstract
The utility model discloses an emulsion plunger pump and pump head assembly thereof, the pump head assembly of emulsion plunger pump includes: the pump head body is provided with a hollow cavity, and the hollow cavity extends along a first direction; the liquid suction valve component and the liquid discharge valve component are sequentially arranged in the hollow cavity along a first direction; the liquid suction valve assembly comprises a liquid suction valve seat and a liquid suction valve core, and the liquid discharge valve assembly comprises a liquid discharge valve seat and a liquid discharge valve core; the hollow cavity is provided with two liquid discharge ports on the liquid discharge side of the liquid discharge valve assembly, the two liquid discharge ports respectively extend along a second direction to form a liquid discharge channel of the pump head assembly, and the first direction is vertical to the second direction; the two liquid discharge ports are symmetrically arranged on two sides of the axis direction of the liquid discharge valve core, and a gap is reserved between the liquid discharge section of the liquid discharge port and the liquid discharge valve core along the radial direction of the liquid discharge valve core. The utility model provides a flowing back case of current emulsion plunger pump receive the problem that hydraulic shock easily.
Description
Technical Field
The utility model relates to an emulsion pump especially relates to an emulsion plunger pump.
Background
The emulsion pump is a device which takes emulsion or water as a medium, converts electric energy or other energy sources into mechanical energy, works the emulsion through an internal structure and further converts the mechanical energy into hydraulic pressure of the emulsion. The emulsion pump provides hydraulic power for the working face hydraulic support and is the heart of the whole working face hydraulic system. In recent years, along with the increasing of large mining height working faces in China, in order to meet the requirements of high supporting resistance and high working resistance of a large mining height hydraulic support and the requirements of rapid frame moving and safety supporting, higher requirements are put forward on the reliability of an emulsion plunger pump station.
The structure and performance design of the pump head body cavity structure, the liquid suction valve assembly and the liquid discharge valve assembly in the power end of the emulsion pump are used as main elements of an emulsion inlet and an emulsion outlet, and the structure and performance design directly relates to smooth suction and discharge of working liquid, and has important influence on the working efficiency of working liquid media in the emulsion pump, the stability of a flow field and the like.
At present, the design form of the liquid suction and discharge valve component of the emulsion pump is various, the function is increasingly perfect, and simultaneously, a plurality of problems exist, such as: 1. the liquid discharge port of the existing emulsion pump is opposite to the liquid discharge valve core, and the valve core is easily impacted by hydraulic force of other adjacent chambers, so that the liquid discharge reliability is poor; 2. the structure of the existing emulsion pump is unreasonable in design of a liquid suction and discharge valve seat and a valve core, so that the displacement of the emulsion pump is small; 3. in the structure of the existing emulsion pump, a liquid suction valve core and a liquid discharge valve core are of a single-guide structure, so that eccentric wear is easy to occur, and premature failure of sealing is easy to occur; 4, the easy-damaged parts of the existing emulsion pump, such as the liquid suction valve seat, the liquid suction valve core, the liquid discharge valve seat, the liquid discharge valve core, the plunger, the sealing packing, the plunger guide copper sleeve, and the like, have high replacement operation difficulty, long maintenance time and high cost.
SUMMERY OF THE UTILITY MODEL
The to-be-solved technical problem of the utility model is that the flowing back case of current emulsion plunger pump receives the problem of the hydraulic shock of the emulsion of other cavities easily.
To the technical problem mentioned above, the utility model provides a following technical scheme:
a pump head assembly of an emulsion plunger pump, comprising: the pump head body is provided with a hollow cavity, and the hollow cavity extends along a first direction; the liquid suction valve assembly and the liquid discharge valve assembly are sequentially arranged in the hollow cavity along the first direction; the liquid suction valve assembly comprises a liquid suction valve seat and a liquid suction valve core, and the liquid discharge valve assembly comprises a liquid discharge valve seat and a liquid discharge valve core; the hollow cavity is provided with two liquid discharge ports on a liquid discharge side of the liquid discharge valve assembly, the two liquid discharge ports respectively extend along a second direction to form a liquid discharge channel of the pump head assembly, and the first direction is perpendicular to the second direction; the two liquid discharge ports are symmetrically arranged on two sides of the axis direction of the liquid discharge valve core, and a gap is reserved between the liquid discharge section of the liquid discharge port and the liquid discharge valve core along the radial direction of the liquid discharge valve core.
In some embodiments of the present invention, the liquid suction valve seat/the liquid discharge valve seat is formed in a sleeve shape, and a first fitting surface is provided at an end of the liquid suction valve seat/the liquid discharge valve seat; the suction valve spool/the discharge valve spool includes: the valve comprises a valve core head, a main guide part and a connecting part for connecting the valve core head and the main guide part; the valve core head is provided with a second matching surface matched with the first matching surface; the main guide part comprises an annular wall and a connecting rib which is connected with the annular wall and the connecting part, and the annular wall is in sliding fit with the inner wall of the liquid suction valve seat.
In some embodiments of the present invention, the first fitting surface and the second fitting surface are formed as a conical surface.
In some embodiments of the present invention, the liquid suction valve assembly/the liquid discharge valve assembly further comprises a valve stop member, and a return spring is disposed between the valve stop member and the liquid suction valve element/the liquid discharge valve element; the end part of the valve stopping part is provided with a guide hole; the liquid suction valve core/the liquid discharge valve core further comprises auxiliary guide parts, the auxiliary guide parts and the main guide parts are respectively arranged on two sides of the valve core head, and the auxiliary guide parts are connected in the guide holes in a sliding mode.
The utility model discloses an among the partial embodiment, the imbibition disk seat with the pump head body and flowing back disk seat with respectively through conical surface clearance fit between the pump head body.
In some embodiments of the present invention, the pump head body is formed with a first through hole and a second through hole which are coaxial along a radial direction in a region between the liquid suction valve assembly and the liquid discharge valve assembly, the first through hole is used for communicating with a hydraulic conversion assembly, and the hydraulic conversion assembly is used for converting mechanical power into hydraulic change of the pump head assembly; and a plugging component is arranged in the second through hole and used for plugging the hollow cavity.
In some embodiments of the present invention, the first through hole or the second through hole has a diameter larger than an axial or radial dimension of any component of the liquid suction valve assembly.
In some embodiments of the present invention, the pump head assembly further includes an electromagnetic overflow valve and a safety valve, the electromagnetic overflow valve and the safety valve are respectively located at two ends of the liquid discharge channel; a first liquid distribution plate is arranged between the electromagnetic overflow valve and the pump head body, and the first liquid distribution plate is used for converging the two liquid discharge channels and then conveying the converged liquid discharge channels to the electromagnetic overflow valve; and a second liquid distribution plate is arranged between the safety valve and the pump head body and is used for communicating one of the liquid drainage channels with the safety valve.
The utility model discloses disclose simultaneously an emulsion plunger pump, it includes: the crankcase assembly is used for being connected with the main driving motor to transmit power; the pump head assembly is used for pumping emulsion; and a hydraulic conversion component connected between the crankcase assembly and the pump head assembly, wherein the hydraulic conversion component is used for converting mechanical power of the crankcase into hydraulic change of the pump head assembly.
In some embodiments of the present invention, the hydraulic conversion module comprises: a packing seat assembly; and the plunger is slidably connected in the packing seat assembly, one end of the plunger is connected with the crankcase assembly, and the other end of the plunger extends into the hollow cavity.
The technical scheme of the utility model prior art relatively has following technological effect:
the utility model discloses an among emulsion plunger pump and pump head assembly, owing to set up two leakage fluid dram and flowing back passageway, just the flowing back cross-section of leakage fluid dram with the flowing back case has the clearance, and the flowing back in-process carries out the liquid stream between the adjacent leakage fluid dram and flows and can not pass through the flowing back case, can not cause hydraulic shock to the flowing back case, has improved the flowing back reliability of this plunger pump.
Furthermore, in the emulsion plunger pump and pump head assembly disclosed by the utility model, the liquid suction valve seat/liquid discharge valve seat adopts a sleeve structure, and the liquid suction valve core/liquid discharge valve core adopts a structure of an annular wall and a connecting rib, so that on one hand, the annular wall can be matched with the inner wall of the liquid suction valve seat to form a guiding effect, and the liquid suction valve seat can slide in contact through an annular surface, and has large contact area and good stress condition; on the other hand is connected through splice bar and connecting portion, forms the flow channel between splice bar and the annular wall like this, forms the flow channel between spliced pole and the disk seat, compares the structure of current case and disk seat, the utility model discloses a flow area is great between case and the disk seat, makes the discharge capacity of emulsion pump bigger.
Furthermore, in the emulsion plunger pump and the pump head assembly disclosed by the utility model, the conical surface clearance fit mode is adopted between the liquid suction valve seat and the pump head body and between the liquid discharge valve seat and the pump head body, the valve seat is convenient to assemble, and the self-positioning can be realized when the liquid suction valve seat and the liquid discharge valve seat are installed; meanwhile, the self-pretightening device can be automatically pretightened under the pressure of the emulsion liquid, and the work is reliable.
Further, the utility model discloses an among emulsion plunger pump and pump head assembly, imbibition case and imbibition disk seat and flowing back case and flowing back disk seat make leakproofness between the two better, simultaneously through conical surface cooperation, can realize compensation, increase of service life by oneself after wearing and tearing. In addition, the liquid suction valve seat and the liquid discharge valve seat as well as the liquid suction valve core and the liquid discharge valve core adopt the same size design, so that the universality of parts is improved, and the design, processing and maintenance cost is greatly reduced.
Further, the utility model discloses an among emulsion plunger pump and pump head assembly, the pump head body has coaxial first through-hole and second through-hole along radial shaping in the region between imbibition valve subassembly and flowing back valve module, and the aperture of first through-hole or second through-hole is greater than the axial or the radial dimension of arbitrary part in the imbibition valve module. Therefore, the liquid suction valve seat, the liquid suction valve core, the return spring and the second stop valve component of the liquid suction valve component can be assembled and disassembled through the first through hole or the second through hole. Above-mentioned structural design can accomplish imbibition valve subassembly's installation and dismantlement under the condition of not dismantling confession liquid pipeline and flowing back valve subassembly, has improved emulsion pump's maintainability greatly.
Drawings
The objects and advantages of the present invention will be understood from the following detailed description of the preferred embodiments of the invention, taken in conjunction with the accompanying drawings, in which:
fig. 1 is a perspective view of an emulsion plunger pump provided by the present invention;
fig. 2 is a cross-sectional view of a pump head assembly of the emulsion plunger pump provided by the present invention;
fig. 3 is an enlarged cross-sectional view of the pump head assembly of the emulsion plunger pump provided by the present invention;
fig. 4 is a schematic structural diagram of a pump head body in the emulsion plunger pump provided by the present invention;
FIG. 5 is a sectional view taken along line A-A of FIG. 4;
FIG. 6 is a sectional view taken along line B-B of FIG. 4;
fig. 7 is a schematic structural view of a liquid suction valve seat/liquid discharge valve seat of the emulsion plunger pump provided by the present invention;
fig. 8 is a schematic structural diagram of a liquid suction valve core/liquid discharge valve core in the emulsion plunger pump provided by the present invention;
fig. 9 is a schematic structural diagram of a first check valve member in the emulsion plunger pump according to the present invention;
fig. 10 is a schematic structural diagram of a second check valve member in the emulsion plunger pump according to the present invention;
fig. 11 is a schematic view of the shape and the internal flow channel of the first liquid distribution plate in the emulsion plunger pump provided by the present invention;
fig. 12 is a schematic view of the shape and the internal flow channel of the second liquid distribution plate in the emulsion plunger pump according to the present invention.
Detailed Description
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
Fig. 1 shows a specific embodiment of an emulsion plunger pump disclosed in the present invention, and the emulsion plunger pump of the present embodiment is a five-plunger emulsion plunger pump. The emulsion plunger pump comprises three parts; the first part is a crankcase assembly 300 for connecting with a main driving motor to transmit power; the second part is a pump head assembly 100 for pumping the emulsion; the third part is a hydraulic conversion assembly 200 for converting mechanical power of the crankcase into hydraulic power of the pump head assembly 100, wherein one end of the hydraulic conversion assembly 200 is connected to the crankcase assembly 300, and the other end is connected to the pump head assembly 100.
Referring to fig. 2-3, a pump head assembly 100 of an emulsion plunger pump according to an embodiment of the present disclosure includes a pump head body 101, and a suction valve assembly 102 and a drain valve assembly 103 disposed in the pump head body 101.
As shown in fig. 3 to 6, the pump head body 101 has a hollow chamber 101S, and the hollow chamber 101S extends along a first direction; as shown in fig. 3, the first direction in the present embodiment is the direction indicated by arrow a. In one embodiment, the hollow cavity 101S of the pump head body 101 has two ends penetrating along the first direction a, and the openings at the two sides are respectively a liquid suction cavity inlet 101C and a liquid discharge cavity blocking opening 101D; the pump head body 101 is connected to a pipette box (not shown) on the side of the pipette inlet 101C to be connected to the liquid supply end of the emulsion, and the discharge chamber cap 101D is finally capped by the discharge chamber cap 107.
As shown in fig. 3, the liquid suction valve assembly 102 and the liquid discharge valve assembly 103 are sequentially installed in the hollow chamber 101S along the first direction a; the liquid suction valve assembly 102 comprises a liquid suction valve seat 1021 and a liquid suction valve core 1022, and the liquid discharge valve assembly 103 comprises a liquid discharge valve seat 1031 and a liquid discharge valve core 1032;
the hollow chamber 101S is provided with two liquid discharge ports 101E on a liquid discharge side of the liquid discharge valve assembly 103, and the two liquid discharge ports 101E extend along a second direction to form a liquid discharge channel 101F of the pump head assembly 100, as shown in fig. 6, in this embodiment, the second direction is a direction indicated by an arrow B, and the first direction is perpendicular to the second direction; two drain ports 101E are symmetrically provided on both sides of the drain spool 1032 in the axial direction, and a drain cross section of the drain port 101E has a gap with the drain spool 1032 in the radial direction of the drain spool 1032 as indicated by an arrow C in fig. 3.
Because the liquid outlet 101E of the existing multi-plunger pump faces the liquid discharge valve core 1032, the liquid flow inevitably passes through the liquid discharge valve core 1032 during the process that the liquid outlet 101E carries out hydraulic transmission to the adjacent liquid outlet 101E in the liquid discharge process, and when the liquid discharge pressure is higher, liquid flow disturbance and impact can be caused to the liquid discharge valve core 1032; the utility model discloses an among the above-mentioned emulsion plunger pump, owing to set up two leakage fluid dram 101E and flowing back passageway 101F, just leakage fluid dram 101E's flowing back cross-section with flowing back case 1032 has the clearance, and the flowing back in-process carries out the liquid stream between the leakage fluid dram 101E and flows and can not pass through flowing back case 1032, can not cause hydraulic shock to flowing back case 1032, and the flowing back reliability improves greatly.
In order to increase the displacement of the emulsion pump and increase the effective flow area of the suction valve assembly 102 and the drain valve assembly 103, the suction valve assembly 102 and the drain valve assembly 103 adopt the following structures:
as shown in fig. 7, the liquid suction valve seat 1021 and the liquid discharge valve seat 1031 are formed in a sleeve shape, and a first mating surface 1A is provided at an end of the liquid suction valve seat 1021 and the liquid discharge valve seat 1031;
as shown in fig. 8, the suction valve core 1022 and the discharge valve core 1032 include: a valve core head 2A, a main guide portion 2B, and a connecting portion 2C connecting the valve core head 2A and the main guide portion 2B; the valve core head 2A is provided with a second matching surface matched with the first matching surface 1A; the main guide 2B includes an annular wall 2B1 and a connecting rib 2B2 connecting the annular wall 2B1 and the connecting portion 2C, and the annular wall 2B1 is slidably fitted to an inner wall of the liquid suction valve seat 1021.
The liquid suction valve assembly 102 and the liquid discharge valve assembly 103 are arranged in the same structure, so that the processing and the manufacturing are convenient; because the liquid suction valve core 1022 and the liquid discharge valve core 1032 adopt the structures of the annular wall 2B1 and the connecting rib 2B2, on one hand, the annular wall 2B1 can be matched with the inner wall of the liquid suction valve seat 1021 to form a guiding function, and the liquid suction valve core is in contact sliding through an annular surface, so that the contact area is large, and the stress condition is good; on the other hand, the connecting part 2C is connected with the connecting rib 2B2, the connecting part 2C is formed into a cylindrical body extending along the first direction, and the diameter of the connecting part 2C is selected to ensure the strength of the valve core; form flow channel like this between splice bar 2B2 and the annular wall 2B1, form flow channel between spliced pole and the disk seat, compare the structure of current case and disk seat, the utility model discloses a flow area is great between case and the disk seat, makes the discharge capacity of emulsion pump bigger.
Specifically, the first mating surface 1A is a tapered surface formed at an end portion of an inner wall of the liquid suction valve seat 1021 and the liquid discharge valve seat 1031, and the second mating surface is a tapered surface formed at an end portion of a lower surface of the valve core head 2A; the first matching surface 1A and the second matching surface are formed into conical surfaces. The liquid suction valve core 1022 and the liquid suction valve seat 1021 as well as the liquid discharge valve core 1032 and the liquid discharge valve seat 1031 are matched through conical surfaces, so that the sealing performance between the liquid suction valve core and the liquid discharge valve seat is better, meanwhile, the compensation can be automatically realized after the abrasion, and the service life is prolonged.
More specifically, the liquid suction valve seat 1021 and the liquid discharge valve seat 1031, and the liquid suction valve core 1022 and the liquid discharge valve core 1032 are designed in the same size, so that the universality of parts is improved, and the design, processing and maintenance cost is greatly reduced.
Specifically, as shown in fig. 3, 9 and 10, the suction valve assembly 102 and the discharge valve assembly 103 further include a stop valve member, and a return spring 104 is disposed between the stop valve member and the suction valve core 1022 and between the stop valve member and the discharge valve core 1032. The return force of the return spring 104 may close the suction passage of the suction valve assembly 102 and the discharge passage 101F of the discharge valve assembly 103.
In order to further improve the eccentric wear of the suction valve core 1022 and the discharge valve core 1032, the service life is prolonged. Imbibition case 1022 and flowing back case 1032 adopts two guide orientation mode. Specifically, the end part of the valve stopping part is provided with a guide hole 1051C/1052C; the liquid suction valve core 1022 and the liquid discharge valve core 1032 further comprise auxiliary guide parts 2D, the auxiliary guide parts 2D are connected in the guide holes 1051C/1052C in a sliding mode, and the auxiliary guide parts 2D and the main guide parts 2B are arranged on two sides of the valve core head 2A respectively, so that the liquid suction valve core 1022 and the liquid discharge valve core 1032 are positioned in a double-guide mode through the main guide parts 2B and the auxiliary guide parts 2D respectively, the valve core moves along the axis direction of the valve core, and the problem that in the existing structure, the liquid suction valve core 1022 and the liquid discharge valve core 1032 guide in the direction, and the valve core shakes and is worn eccentrically is solved.
Specifically, the valve member that ends of flowing back valve module 103 is first valve member 1051 that ends, as shown in fig. 9, first valve member 1051 includes end cap 1051A and extension post 1051B, end cap 1051A and extension post 1051B shape respectively for the column, end cap 1051A be used for with pump head body 101 realizes sealed cooperation through the sealing washer, extension post 1051B then is used for the installation reset spring 104, the tip shaping of extension post 1051B guiding hole 1051C, in order to make it is smooth and easy to assist guide part 2D to slide be provided with the copper sheathing in guiding hole 1051C, assist guide part 2D with copper sheathing sliding connection.
Specifically, the liquid discharge chamber of the pump head body 101 is sealed by a liquid discharge chamber cap 107, the liquid discharge chamber cap 107 is located outside the first valve stop 1051, and the liquid discharge chamber cap 107 is connected to the pump head body 101 by a screw thread.
Specifically, the stop valve element of the pipette valve assembly 102 is a second stop valve element 1052, as shown in fig. 10, the second stop valve element 1052 includes a catching portion 1052A, a spring mounting portion 1052B, and a transition portion 1052D for connecting the two, the catching portion 1052A is used for catching on the pump head body 101 to achieve the first-direction position limit of the first stop valve element 1051, the spring mounting portion 1052B is used for mounting the return spring 104, and an end of the spring mounting portion 1052B forms the guide hole 1052C. Similarly, in order to make the auxiliary guide portion 2D slide smoothly, a copper bush is provided in the guide hole 1052C, and the auxiliary guide portion 2D is slidably connected to the copper bush.
More specifically, as shown in fig. 5, a snap groove 101G is formed on the pump head body 101, the snap portion 1052A is a partial circular ring extending along the radial direction of the suction valve core 1022, and the snap portion 1052A is inserted into the snap groove 101G to position the second stop valve member 1052. In order to reduce the size of the second valve stop member 1052 and facilitate the disassembly and assembly thereof, the clamping portion 1052A is two symmetrical partial rings, the radian of the partial rings is less than 90 °, the spring mounting portion 1052B is formed into a cylinder and is spaced from the clamping portion 1052A by a set distance along the first direction, and the transition portion 1052D is formed into a partial conical ring connected between the partial rings and the cylinder.
Specifically, as shown in fig. 3, the liquid suction valve seat 1021 and the pump head body 101 and the liquid discharge valve seat 1031 and the pump head body 101 are in clearance fit with each other through a conical surface, and the liquid suction valve seat 1021 and the liquid discharge valve seat 1031 can be self-positioned when being mounted in a conical surface fit manner; meanwhile, the valve seat can be automatically pre-tightened under the pressure of the emulsion liquid, the operation is reliable, and meanwhile, the valve seat can be conveniently and quickly assembled and disassembled by adopting a clearance fit mode. Specifically, the conical surface adopts an inverted conical surface with a wide upper part and a narrow lower part, so that the liquid suction valve seat 1021 and the liquid discharge valve seat 1031 can be quickly positioned. More specifically, sealing rings 108 are further disposed between the liquid suction valve seat 1021 and the pump head body 101, and between the liquid discharge valve seat 1031 and the pump head body 101, and the sealing rings 108 are used for realizing the sealing connection between the two.
As shown in fig. 3 and 5, the pump head body 101 is formed with a first through hole 101A and a second through hole 101B which are coaxial in the radial direction in the area between the suction valve assembly and the discharge valve assembly, the first through hole 101A is used for communicating with a hydraulic conversion assembly, and the hydraulic conversion assembly is used for converting mechanical power into hydraulic change of the pump head assembly 100; a plugging component 106 is arranged in the second through hole 101B, and the plugging component 106 is used for plugging the hollow cavity 101S. Specifically, the plugging assembly 106 comprises a plugging sealing piece 1062 and a plugging connecting piece 1061, the plugging sealing piece 1062 is located inside the plugging connecting piece 1061 and is connected to the pump head body 101 in a sealing manner, and the plugging connecting piece 1061 is connected to the pump head body 101 in a threaded manner.
The aperture of the first through hole 101A or the second through hole 101B is larger than the axial or radial dimension of any one of the parts of the liquid suction valve assembly 102. Thus, the suction valve seat 1021, the suction valve core 1022, the return spring 104, and the second valve stop member 1052 of the suction valve assembly 102 can be assembled and disassembled through the first through hole 101A or the second through hole 101B. The above structure design can complete the installation and disassembly of the liquid suction valve assembly 102 without disassembling the liquid supply pipeline and the liquid discharge valve assembly 103, and greatly improves the maintainability of the emulsion pump.
The pump head assembly 100 further includes an electromagnetic overflow valve and a safety valve (not shown in the figure), the emulsion passes through the liquid discharge channel 101F and then is delivered to the hydraulic system through the electromagnetic overflow valve, and the safety valve is used for communicating with the liquid discharge channel 101F to sense the liquid flow pressure and performing overflow pressure relief at a certain pressure threshold. The electromagnetic overflow valve and the safety valve are respectively positioned at two ends of the liquid drainage channel 101F; as shown in fig. 11, a first liquid distribution plate 109 is arranged between the electromagnetic spill valve and the pump head body 101, and the first liquid distribution plate 109 is used for merging the two liquid discharge channels 101F and then conveying the merged liquid to the electromagnetic spill valve; as shown in fig. 12, a second liquid distribution plate 110 is disposed between the safety valve and the pump head body 101, and the second liquid distribution plate 110 is used for communicating one of the liquid discharge channels 101F with the safety valve.
By adopting the structures of the first liquid distribution plate 109 and the second liquid distribution plate 110, the original structures of an electromagnetic overflow valve and a safety valve do not need to be changed, and the design and manufacturing cost of the plunger pump is reduced.
Specifically, the hydraulic conversion assembly 200 of the emulsion plunger pump includes:
the packing seat assembly 201, wherein the packing seat assembly 201 is positioned outside the first through hole 101A of the pump head body 101;
and a plunger 202 slidably connected in the packing seat assembly 201, wherein one end of the plunger 202 is connected with the crankcase assembly 300, and the other end extends into the first through hole 101A.
The pump head assembly 100 and the hydraulic conversion assembly 200 of the emulsion plunger 202 pump of the present invention can be assembled according to the following steps.
Step 1: sleeving the O-shaped sealing ring 108 into a sealing groove of the liquid suction valve seat 1021, placing the liquid suction valve seat 1021 with the sealing ring 108 into a taper hole of a liquid suction cavity through the first through hole 101A or the second through hole 101B of the pump head body 101, and lightly knocking the liquid suction valve seat 1021 by using a copper rod to enable the liquid suction valve seat 1021 to be tightly attached to the pump head body 101;
step 2: sequentially putting the liquid suction valve core 1022, the return spring 104 and the second stop valve element 1052 into a first through hole 101A or a second through hole 101B of the pump head body 101, pressing down the installed second stop valve element 1052 from an upper opening of the pump head body 101 by using a special tool, and then rotating the second stop valve element 1052 to enable a clamping part to be clamped into a clamping groove in the pump head body 101 so as to enable the clamping part to be axially positioned in the pump head body 101, and at the moment, finishing the assembly of the liquid suction valve assembly 102;
and step 3: sleeving an O-shaped sealing ring 108 into a sealing groove of a drainage valve seat 1031, placing the drainage valve seat 1031 with the sealing ring 108 into a taper hole of a drainage cavity through an opening on the upper side of the pump head body 101, and lightly knocking the drainage valve seat 1031 by a copper rod to enable the drainage valve seat 1031 to be tightly attached to the pump head body 101;
and 4, step 4: the drain valve core 1032, the return spring 104 and the first stop valve 1051 are sequentially assembled through the opening on the upper side of the pump head body 101, and the drain cavity is blocked by the drain cavity blocking cover 107, at this time, the assembly of the drain valve assembly 103 is completed;
and 5: installing a packing seat assembly 201 at a first through hole 101A of the pump body 101, and installing a plunger 202 in the packing seat assembly 201; at this point, assembly of hydraulic conversion assembly 200 is complete;
step 6: sleeving an O-shaped sealing ring 108 into a sealing groove of a sealing part 1062, placing the sealing part 1062 into a second through hole 101B of the pump head body 101, and screwing a sealing connecting part 1061 and the pump head body 101; assembly of the plugging assembly 106 is now complete;
and 7: mounting a first liquid distribution plate 109 and a second liquid distribution plate 110 on the assembly body finished in the step 6 through screws, and sealing the first liquid distribution plate 109 and the pump head body 101 and the second liquid distribution plate 110 and the pump head body 101 by using O-rings; at this point, the assembly of the emulsion plunger 202 pump is complete.
When it is desired to disassemble the pipette valve assembly 102, the following steps are taken:
step 1, disassembling the assembly of the hydraulic conversion assembly 200;
step 2, detaching the second valve stop member 1052, the return spring 104, the suction valve core 1022 and the suction valve seat 1021 in the suction valve assembly 102 from the first through hole 101A side in sequence;
so far, accomplished the dismantlement of imbibition valve unit 102 promptly, in this scheme, need not dismantle the liquid supply pipeline and can accomplish the dismouting of imbibition valve unit 102 in pump head body 101, convenient maintenance.
It should be understood that the above examples are only for clarity of illustration and are not intended to limit the embodiments. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. And obvious variations or modifications therefrom are within the scope of the invention.
Claims (10)
1. A pump head assembly of an emulsion plunger pump, comprising:
the pump head body is provided with a hollow cavity, and the hollow cavity extends along a first direction;
the liquid suction valve assembly and the liquid discharge valve assembly are sequentially arranged in the hollow cavity along the first direction; the liquid suction valve assembly comprises a liquid suction valve seat and a liquid suction valve core, and the liquid discharge valve assembly comprises a liquid discharge valve seat and a liquid discharge valve core; the method is characterized in that:
the hollow cavity is provided with two liquid discharge ports on a liquid discharge side of the liquid discharge valve assembly, the two liquid discharge ports respectively extend along a second direction to form a liquid discharge channel of the pump head assembly, and the first direction is perpendicular to the second direction;
the two liquid discharge ports are symmetrically arranged on two sides of the axis direction of the liquid discharge valve core, and a gap is reserved between the liquid discharge section of the liquid discharge port and the liquid discharge valve core along the radial direction of the liquid discharge valve core.
2. A pump head assembly for an emulsion plunger pump, as recited in claim 1, wherein:
the liquid suction valve seat/the liquid discharge valve seat are formed into a sleeve shape, and the end part of the liquid suction valve seat/the liquid discharge valve seat is provided with a first matching surface;
the suction valve spool/the discharge valve spool includes:
the valve comprises a valve core head, a main guide part and a connecting part for connecting the valve core head and the main guide part;
the valve core head is provided with a second matching surface matched with the first matching surface; the main guide part comprises an annular wall and a connecting rib which is connected with the annular wall and the connecting part, and the annular wall is in sliding fit with the inner wall of the liquid suction valve seat.
3. A pump head assembly for an emulsion plunger pump as recited in claim 2, wherein:
the first matching surface and the second matching surface are formed into conical surfaces.
4. A pump head assembly for an emulsion plunger pump as recited in claim 2, wherein:
the liquid suction valve assembly/the liquid discharge valve assembly also comprises a valve stop member, and a return spring is arranged between the valve stop member and the liquid suction valve core/the liquid discharge valve core; the end part of the valve stopping part is provided with a guide hole; the liquid suction valve core/the liquid discharge valve core further comprises auxiliary guide parts, the auxiliary guide parts and the main guide parts are respectively arranged on two sides of the valve core head, and the auxiliary guide parts are connected in the guide holes in a sliding mode.
5. A pump head assembly for an emulsion plunger pump as recited in claim 1, wherein:
the liquid suction valve seat is in clearance fit with the pump head body and the liquid discharge valve seat is in clearance fit with the pump head body through conical surfaces.
6. A pump head assembly for an emulsion plunger pump as recited in claim 1, wherein:
the pump head body is provided with a first through hole and a second through hole which are coaxial along the radial direction in the area between the liquid suction valve component and the liquid discharge valve component, the first through hole is used for being communicated with a hydraulic conversion component, and the hydraulic conversion component is used for converting mechanical power into hydraulic change of the pump head assembly; and a plugging component is arranged in the second through hole and used for plugging the hollow cavity.
7. A pump head assembly for an emulsion plunger pump as recited in claim 6, wherein:
the first or second through hole has a bore diameter greater than the axial or radial dimension of any of the components of the pipette assembly.
8. A pump head assembly for an emulsion plunger pump as recited in claim 1, wherein:
the pump head assembly further comprises an electromagnetic overflow valve and a safety valve, and the electromagnetic overflow valve and the safety valve are respectively positioned at two ends of the liquid drainage channel;
a first liquid distribution plate is arranged between the electromagnetic overflow valve and the pump head body, and the first liquid distribution plate is used for converging the two liquid discharge channels and then conveying the converged liquid discharge channels to the electromagnetic overflow valve;
and a second liquid distribution plate is arranged between the safety valve and the pump head body and is used for communicating one of the liquid drainage channels with the safety valve.
9. An emulsion plunger pump, which is characterized in that: it includes:
the crankcase assembly is used for being connected with the main driving motor to transmit power;
a pumphead assembly as claimed in any one of claims 1 to 8, for pumping an emulsion;
and a hydraulic conversion component connected between the crankcase assembly and the pump head assembly, wherein the hydraulic conversion component is used for converting mechanical power of the crankcase into hydraulic change of the pump head assembly.
10. The emulsion plunger pump of claim 9, wherein:
the hydraulic conversion assembly includes:
a packing seat assembly;
and the plunger is slidably connected in the packing seat assembly, one end of the plunger is connected with the crankcase assembly, and the other end of the plunger extends into the hollow cavity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021477350.4U CN212656967U (en) | 2020-07-23 | 2020-07-23 | Emulsion plunger pump and pump head assembly thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021477350.4U CN212656967U (en) | 2020-07-23 | 2020-07-23 | Emulsion plunger pump and pump head assembly thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212656967U true CN212656967U (en) | 2021-03-05 |
Family
ID=74770103
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021477350.4U Active CN212656967U (en) | 2020-07-23 | 2020-07-23 | Emulsion plunger pump and pump head assembly thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212656967U (en) |
-
2020
- 2020-07-23 CN CN202021477350.4U patent/CN212656967U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN111734621A (en) | Emulsion plunger pump and pump head assembly thereof | |
| CN216008869U (en) | Fluid end and plunger pump | |
| CN216008879U (en) | Gland, hydraulic end and plunger pump | |
| CN113898574A (en) | Gland, hydraulic end and plunger pump | |
| CN113790151A (en) | Fluid end and plunger pump | |
| CN115405514A (en) | Fluid end and plunger pump | |
| CN212656967U (en) | Emulsion plunger pump and pump head assembly thereof | |
| CN113404684A (en) | Emulsion pump fluid end and emulsion pump | |
| CN210623065U (en) | Fluid end mechanism of emulsion pump | |
| CN212479545U (en) | Emulsion plunger pump and pump head assembly thereof | |
| CN212564562U (en) | Valve seat and piston type check valve | |
| WO2022073328A1 (en) | Emulsion plunger pump and pump head assembly thereof | |
| CN115383511A (en) | Main shaft bearing lubricating structure and main shaft | |
| RU2629859C1 (en) | Pump | |
| CN201288859Y (en) | Plate type check valve with valve housing | |
| CN111963730A (en) | Valve seat, manufacturing method of valve seat and piston type one-way valve | |
| CN212027714U (en) | Improved constant-pressure setting type forward-washable check valve | |
| CN109253123B (en) | Automatic reciprocating oil cylinder for road marking | |
| CN111287957A (en) | Double-acting plunger pump hydraulic end and plunger pump adopting same | |
| CN116085656B (en) | Flow-adjustable pneumatic lubrication pump for lubrication system | |
| CN218518270U (en) | Main shaft bearing lubricating structure and main shaft | |
| CN106194027B (en) | Upgradable integrated water-free self-suction drill | |
| CN215805120U (en) | Emulsion pump fluid end and emulsion pump | |
| CN219412491U (en) | Circulation joint and top drive device | |
| CN217270774U (en) | Liquid inlet and outlet valve group |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address | ||
| CP03 | Change of name, title or address |
Address after: 101399 No.27, Linhe Development Zone, Shunyi District, Beijing Patentee after: Beijing Tianma Zhikong Technology Co.,Ltd. Patentee after: Beijing coal technology Tianma Automation Technology Co., Ltd Address before: No.131, ground floor, Tiandi building, No.5, qingniangou East Road, Hepingli, Chaoyang District, Beijing 100013 Patentee before: BEIJING TIANDI-MARCO ELECTRO-HYDRAULIC CONTROL SYSTEM Co.,Ltd. Patentee before: Beijing coal technology Tianma Automation Technology Co., Ltd |