阅读说明：本技术 一种计量泵泵头及计量泵 (Metering pump head and metering pump ) 是由 刘胜利 宁文波 于 2021-04-09 设计创作，主要内容包括：本发明涉及计量泵技术领域,具体是一种计量泵泵头及计量泵,所述计量泵泵头包括泵头本体、设于泵头本体内的柱塞腔,还包括：进口阀组安装部分,其配置为孔径呈梯度变化的贯穿泵头本体一侧的过流通道,用于安装进口阀组；安装在所述柱塞腔的柱塞部分,所述柱塞部分远离过流通道的一端与计量泵传动端连接,并受其驱动；所述泵头本体上开设有计量泵进口和计量泵出口,所述过流通道分别与计量泵进口和柱塞腔接通,所述柱塞腔还接通计量泵出口；本发明的有益效果是：通过改变进口阀组的安装位置,使得在安装、更换进口阀组时,无需拆装进出口阀门和管道,即可快速从上面取出进口单向阀；消除了存在的安全隐患,又减少了浪费；且便于运输。(The invention relates to the technical field of metering pumps, in particular to a metering pump head and a metering pump, wherein the metering pump head comprises a pump head body and a plunger cavity arranged in the pump head body, and the metering pump further comprises: the inlet valve group mounting part is configured into an overflowing channel with the aperture changing in a gradient manner and penetrating through one side of the pump head body, and is used for mounting the inlet valve group; the plunger part is arranged in the plunger cavity, and one end of the plunger part, which is far away from the overflowing channel, is connected with and driven by the transmission end of the metering pump; the pump head body is provided with a metering pump inlet and a metering pump outlet, the overflowing channel is respectively communicated with the metering pump inlet and the plunger cavity, and the plunger cavity is also communicated with the metering pump outlet; the invention has the beneficial effects that: by changing the installation position of the inlet valve group, the inlet check valve can be quickly taken out from the inlet valve group without disassembling and assembling the inlet valve and the outlet valve and a pipeline when the inlet valve group is installed and replaced; potential safety hazards are eliminated, and waste is reduced; and is convenient for transportation.)

1. A metering pump head comprises a pump head body and a plunger cavity arranged in the pump head body; it is characterized by also comprising:

the inlet valve group mounting part is configured into an overflowing channel with the aperture changing in a gradient manner and penetrating through one side of the pump head body, and is used for mounting the inlet valve group;

the plunger part is arranged in the plunger cavity, and one end of the plunger part, which is far away from the overflowing channel, is connected with and driven by the transmission end of the metering pump;

the pump head body is provided with a metering pump inlet and a metering pump outlet, the overflowing channel is communicated with the metering pump inlet and the plunger cavity respectively, the plunger cavity is further communicated with the metering pump outlet, and the outlet valve group is installed at the metering pump outlet.

2. A dosing pump head according to claim 1, wherein the dosing pump inlet is provided at an end of the pump head body remote from the plunger chamber.

3. The metering pump head of claim 1, wherein the flow passage forms a discharge hole through the other side of the pump head body, and a blocking member for sealing the discharge hole is installed at the discharge hole.

4. The metering pump head of claim 1, wherein the flow passage is provided as a plurality of mounting spaces with successively increasing apertures, one of the mounting spaces communicating with the plunger chamber.

5. A pump head of a metering pump according to claim 4, wherein an installation space communicating with the plunger chamber is provided with an overflow sleeve for passing a medium therethrough, one end of the overflow sleeve abuts against the inlet valve group, and the other end is detachably mounted and fixed by a locking member.

6. The metering pump head of claim 5, wherein a sealing gasket is provided at the junction of the overflowing sleeve and the retaining member.

7. The pump head of claim 5, wherein the locking member comprises at least an inlet valve limiting sleeve, and the inlet valve limiting sleeve and the flow passage sleeve have internally threaded holes at the top ends thereof for allowing the long screws to be screwed in and pulled out during assembly and disassembly.

8. A dosing pump head according to claim 1, wherein the end of the pump head body remote from the flow path is fitted with a connection to an external mechanism.

9. A metering pump comprising a drive member, a metering pump head as claimed in any one of claims 1 to 8 drivingly connected to said drive member.

Technical Field

The invention relates to the technical field of metering pumps, in particular to a metering pump head and a metering pump.

Background

The one-way valve at the inlet of the plunger of the metering pump is usually screwed from the lower part of the pump head, so that the water inlet of the pump is vertically downward. In transportation or installation, a frame is required to be arranged for lifting the whole metering pump conveniently; in addition, as the inlet and outlet check valves are easy to be blocked and abraded by sundries, the machine is stopped to disassemble and assemble and replace the inlet and outlet check valves.

In the prior art, in order to prevent the inlet check valve from being damaged in the transportation process of the metering pump, a frame is arranged to lift the whole metering pump, so that the gravity center of the metering pump is raised, the cost of a packing box is increased, and the risk of the transportation damage of the metering pump is increased; in the installation process of the metering pump, an inlet pipeline and a valve are conveniently arranged, and a frame is also arranged to integrally lift the metering pump, so that the requirement on the installation space is increased, and the installation cost is increased; when the inlet check valve and the outlet check valve of the metering pump are blocked or abraded by sundries, the inlet check valve is screwed in from the lower part of the pump head, the inlet check valve needs to be disassembled from the lower part of the pump head when being disassembled and replaced, an inlet pipeline needs to be disassembled, and media in the pump head and the pipeline are emptied, so that the workload of disassembling and assembling pipelines is large, the disassembling and assembling difficulty is large, the metering pump generally conveys corrosive media, the media from the inlet valve to the section of the pump head need to be emptied during disassembling and assembling, unsafe hidden dangers are brought, and great waste is caused.

In summary, in the structure of the metering pump in the prior art, no matter the inlet check valve of the metering pump is transported, installed, and maintained, due to the influence of the installation position of the inlet check valve, extra cost and waste are caused, and potential safety hazards are brought.

Disclosure of Invention

The present invention is directed to a pump head of a metering pump and a metering pump, so as to solve the problems mentioned in the background art.

In order to achieve the purpose, the invention provides the following technical scheme:

the utility model provides a measuring pump head, the measuring pump head includes the pump head body, locates this internal plunger chamber of pump head, still includes: the inlet valve group mounting part is configured into an overflowing channel with the aperture changing in a gradient manner and penetrating through one side of the pump head body, and is used for mounting the inlet valve group; the plunger part is arranged in the plunger cavity, and one end of the plunger part, which is far away from the overflowing channel, is connected with and driven by the transmission end of the metering pump; the pump head body is provided with a metering pump inlet and a metering pump outlet, the overflowing channel is communicated with the metering pump inlet and the plunger cavity respectively, the plunger cavity is further communicated with the metering pump outlet, and the outlet valve group is installed at the metering pump outlet.

As a further scheme of the invention: the metering pump inlet is arranged at one end, far away from the plunger cavity, of the pump head body.

As a still further scheme of the invention: the overflowing channel penetrates through the other side of the pump head body to form a discharging hole, and a plugging component for sealing the discharging hole is installed at the discharging hole.

As a still further scheme of the invention: the overflowing channel is provided with a plurality of installation spaces with gradually increasing apertures, and one installation space is communicated with the plunger cavity.

As a still further scheme of the invention: the installation space of putting through with the plunger chamber is equipped with the cover that overflows that supplies the medium to pass through, the one end butt import valves of overflowing cover, the other end passes through retaining member demountable installation fixed.

As a still further scheme of the invention: and a sealing gasket is arranged at the joint of the overflowing sleeve and the locking piece.

As a still further scheme of the invention: the retaining member at least comprises an inlet valve limiting sleeve, and the top ends of the inlet valve limiting sleeve and the overflowing sleeve are provided with internal thread holes for enabling the long screw to be screwed in and pulled out during disassembly and assembly.

As a still further scheme of the invention: the plunger part comprises a plunger matched with the plunger cavity and a plunger sealing module for packaging the plunger; the plunger seal module at least comprises a seal filler and a filler pressing piece.

As a still further scheme of the invention: and one end of the pump head body, which is far away from the overflowing channel, is provided with a connecting part connected with an external mechanism.

Compared with the prior art, the invention has the beneficial effects that: the inlet valve group mounting part arranged on the metering pump head realizes the dismounting and mounting of the inlet valve group from the top of the pump head body by changing the mounting position of the inlet valve group and matching with the overflowing channel with the aperture in gradient change, thereby saving the design space at the bottom of the pump head body; by changing the installation position of the inlet valve group, the inlet check valve can be quickly taken out from the inlet valve group without disassembling and assembling the inlet valve and the outlet valve and a pipeline when the inlet valve group is installed and replaced; potential safety hazards are eliminated, and waste is reduced; and is convenient for transportation.

The invention provides another technical scheme that: a metering pump comprises a driving member and a metering pump head which is in transmission connection with the driving member.

Compared with the prior art, the invention has the beneficial effects that: the metering pump is applied to the metering pump head, the mounting position of the inlet valve group is changed, the matched aperture is a gradient-changing flow passage, the inlet valve group is detached and mounted from the top of the pump head body, and the design space at the bottom of the pump head body is saved.

Drawings

Fig. 1 is a schematic structural diagram of a pump head of a metering pump according to an embodiment of the present invention.

In the drawings: 1. an inlet of a metering pump; 2. an inlet valve bank; 3. a discharging plug; 4. a pump head body; 5. a plunger; 6. a linker; 7. the pump head is screwed with the nut; 8. a plunger seal assembly; 9. packing gland nuts; 10. an overflowing sleeve; 11. an inlet valve group compression nut; 12. an outlet valve set.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

Referring to fig. 1, in an embodiment of the present invention, a pump head of a metering pump includes a pump head body, a plunger chamber disposed in the pump head body, and further includes: the inlet valve group mounting part is configured into an overflowing channel with the aperture changing in a gradient manner and penetrating through one side of the pump head body, and is used for mounting the inlet valve group 2; the plunger part is arranged in the plunger cavity, and one end of the plunger part, which is far away from the overflowing channel, is connected with and driven by the transmission end of the metering pump; pump head body 4 is last to have seted up measuring pump import 1 and measuring pump export, the passageway that overflows is put through with measuring pump import 1 and plunger chamber respectively, the plunger chamber still puts through the measuring pump export, outlet valve group 12 is installed to the measuring pump export.

Specifically, the diameter of the overflowing channel which is in gradient change and penetrates through one side of the pump head body penetrates through one side of the top of the pump head body to form a stepped overflowing hole, and the overflowing hole can penetrate through the bottom of the blind hole pump head body or does not penetrate through the bottom of the blind hole pump head body; the diameters of the overflowing holes are sequentially increased from the bottom of the pump head body to the top of the pump head body, the diameter of the overflowing hole at the bottommost is smaller than the outer diameter of the inlet valve group and used for supporting and abutting against the inlet valve group, and the diameter of the overflowing hole at the top is larger than the outer diameter of the inlet valve group, so that the inlet valve group is convenient to mount and dismount; the locking piece at least comprises an inlet valve limiting sleeve, and the top ends of the inlet valve limiting sleeve and the overflowing sleeve are provided with internal thread holes for screwing in and pulling out long screws during disassembly and assembly; is convenient to disassemble. The valve seat hole at the bottommost part is communicated with an inlet of a metering pump; in this way, the mounting position of the inlet valve group is changed, and the inlet valve group is dismounted and mounted from the top of the pump head body by matching with the overflowing channel with the aperture changing in a gradient manner, so that the design space at the bottom of the pump head body is saved; by changing the installation position of the inlet valve group, the installation position of the inlet valve group is prevented from being arranged at the bottom of the pump head body, so that the inlet check valve can be quickly taken out from the upper side without disassembling and assembling an inlet valve and a pipeline when the inlet valve group is installed and replaced; potential safety hazards are eliminated, and waste is reduced; and is convenient for transportation.

In one application of this embodiment, the metering pump inlet 1 is provided at an end of the pump head body remote from the plunger chamber.

Arranging the metering pump inlet 1 in a position parallel to the plunger cavity, and communicating the metering pump inlet with the overflowing channel, the plunger cavity and the metering pump outlet to realize the liquid sucking and discharging functions of the metering pump; the bottom space of the pump head body is reserved, the occupation of the bottom space of the pump head body is reduced, no additional frame is needed for supporting the metering pump during transportation, the transportation is convenient, and the inlet check valve can be quickly taken out from the upper side without disassembling and assembling an inlet valve and a pipeline during installation and replacement of the inlet valve group; the potential safety hazard is eliminated, and the waste is reduced.

In another application of this embodiment, as shown in fig. 1, the flow passage penetrates through the other side of the pump head body to form a discharge hole, and a blocking component for sealing the discharge hole is installed at the discharge hole.

The plugging component is a discharging plug 3 or a plug, and under certain conditions, residual media in the pump head body need to be discharged; realized by screwing out the discharging plug 3 or the plug head which is installed by screw threads.

In this embodiment, measuring pump import 1 is parallel arrangement's internal thread structure, need not whole the measuring pump of raising like this when transportation and installation, has reduced the cost of transportation and the installation degree of difficulty.

Referring to fig. 1, in another embodiment of the present invention, the flow passage is configured as a plurality of installation spaces with sequentially increasing apertures, wherein one installation space is communicated with the plunger cavity.

Specifically, the installation space that is put through with the plunger chamber is equipped with the cover 10 that overflows that supplies the medium to pass through, the one end butt inlet valve group 2 of cover 10 that overflows, the other end passes through retaining member demountable installation fixed.

In this embodiment, the retaining member includes inlet valve group gland nut 11 at least, through inlet valve group gland nut 11 compresses tightly overflowing sleeve 10, and then fixes inlet valve group 2, simultaneously, overflowing sleeve 10 and the liquid outlet and the plunger chamber switch-on of inlet valve group 2. When the inlet valve group 2 is blocked or damaged, only the inlet valve group compression nut 11 needs to be unscrewed from the upper surface, the overflowing sleeve 10 and the inlet valve group 2 can be pulled out in sequence by screwing the threads on the overflowing sleeve 11 and the valve limiting sleeve of the inlet valve group through the long screws, and finally, the valves are cleaned or replaced without dismounting the inlet pipeline valves, so that the valves are convenient to take out for maintenance and replacement.

Furthermore, the junction of overflowing sleeve and retaining member is equipped with seal gasket, and seal gasket can adopt the tetrafluoro gasket, and the tetrafluoro gasket can seal the passageway overflows, has better corrosion resistance again concurrently.

Referring to fig. 1, in another embodiment of the present invention, the plunger portion includes a plunger 5 matching with the plunger cavity, and a plunger sealing module enclosing the plunger 5; the plunger seal module at least comprises a seal filler and a filler pressing piece.

When one plunger cavity is arranged in the pump head body, the number of the plungers is also one, the sealing filler is arranged in a gap between the plungers and the plunger cavity and used for sealing the plunger cavity when the piston moves, further, the sealing filler and sealing rings at two ends of the sealing filler form a plunger sealing assembly 8, and the plunger sealing assembly 8 is sleeved on the plungers and is fixed through the filler pressing piece to realize the sealing of the plunger cavity; the packing pressing piece comprises a guide ring and a packing pressing nut 9, wherein the guide ring is fixedly installed through the packing pressing nut 9 and is matched with the plunger without interfering the reciprocating motion of the plunger.

In one embodiment, the end of the pump head body 4 remote from the flow passage is fitted with a connection to an external mechanism. Connecting portion includes connector 6 and pump head jam nut 7, connector 6 installs through pump head jam nut 7 the one end of overflowing the passageway is kept away from to pump head body 4, and it is fixed with external mechanism promptly the measuring pump transmission end connection simultaneously, realizes the installation of measuring pump head.

Referring to fig. 1, in another embodiment of the present invention, a metering pump includes a driving member, and a pump head of the metering pump, which is in transmission connection with the driving member.

The driving part adopts a motor or a motor, and the output end of the motor or the motor is connected with the plunger through the transmission end of the metering pump and is used for driving the plunger to reciprocate. The metering pump head of the metering pump realizes the disassembly and the assembly of the inlet valve group from the top of the pump head body and saves the design space at the bottom of the pump head body by arranging the inlet valve group mounting part, changing the mounting position of the inlet valve group and matching with the overflowing channel with the gradient-changing aperture; by changing the installation position of the inlet valve group, the inlet check valve can be quickly taken out from the inlet valve group without disassembling and assembling the inlet valve and the outlet valve and a pipeline when the inlet valve group is installed and replaced; potential safety hazards are eliminated, and waste is reduced; and is convenient for transportation.

The working principle of the invention is as follows: the overflowing channel with the gradient-changing aperture and penetrating through one side of the pump head body penetrates through one side of the top of the pump head body to form a stepped overflowing hole, and the overflowing hole can penetrate through the bottom of the blind hole pump head body or does not penetrate through the bottom of the blind hole pump head body; the diameters of the overflowing holes are sequentially increased from the bottom of the pump head body to the top of the pump head body, the diameter of the overflowing hole at the bottommost is smaller than the outer diameter of the inlet valve group and used for supporting and abutting against the inlet valve group, and the diameter of the overflowing hole at the top is larger than the outer diameter of the inlet valve group, so that the inlet valve group is convenient to mount and dismount; the bottom overflow hole is communicated with the inlet of the metering pump.

It should be noted that the inlet valve group and the outlet valve group adopted in the present invention are applications of the prior art, and those skilled in the art can implement the intended functions according to the related description, or implement the technical characteristics to be achieved by the similar techniques, and will not be described in detail herein.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.