CN219139880U

CN219139880U - Proportional control valve

Info

Publication number: CN219139880U
Application number: CN202223499253.7U
Authority: CN
Inventors: 马涛; 刘腾; 王绍杰; 王晓辉; 胡聪聪
Original assignee: Shandong Taibang Biological Products Co ltd
Current assignee: Shandong Taibang Biological Products Co ltd
Priority date: 2022-12-15
Filing date: 2022-12-15
Publication date: 2023-06-06
Anticipated expiration: 2032-12-15

Abstract

The utility model provides a proportional control valve, which relates to the technical field of proportional control valves, and adopts the following scheme: including valve body and case, be provided with the connecting rod on the case, the connecting rod is connected with the executor, the inlet end of valve body is provided with the filtration casing, be provided with inlet and liquid outlet on the filtration casing, the liquid outlet with the import intercommunication of valve body, be provided with the filter chamber in the filtration casing, be provided with the filter core in the filter chamber, the filter chamber with the inlet with the liquid outlet all communicates. The utility model can filter impurities, reduce abrasion and corrosion of the impurities to the valve body and the valve core, and prolong the service life of the proportional regulating valve.

Description

Proportional control valve

Technical Field

The utility model relates to the technical field of proportional control valves, in particular to a proportional control valve.

Background

The proportional control valve consists of two parts: the electric-mechanical converter and the hydraulic part, the former can convert the electric signal into mechanical force and displacement proportionally, the latter can provide the output of oil pressure, flow and so on proportionally and continuously after receiving the mechanical force and displacement, thus realizing the conversion process of two parameters of electric-liquid.

Generally, the valve body of the proportional control valve and the valve core are made of carbon steel, copper and stainless steel, fluid generally contains various impurities such as soil and gravel, and along with the movement of the fluid, the impurities abrade the sealing surfaces of the valve core and the valve body, so that the flow and the pressure of the proportional control valve are controlled not precisely, leakage can be caused due to serious abrasion, and meanwhile, when the liquid with corrosive effects such as acid, alkali and salt is conveyed, the abrasion effect of the impurities is superimposed, so that the loss of the valve body and the valve core is quickened, and the service life of the proportional control valve is greatly influenced.

Disclosure of Invention

In order to overcome the defects in the prior art, the utility model provides the proportional regulating valve which can filter impurities, reduce the abrasion of the impurities on the valve body and the valve core and prolong the service life of the proportional regulating valve.

The technical scheme adopted by the utility model for solving the technical problems is as follows: the utility model provides a proportional control valve, includes valve body and case, be provided with the connecting rod on the case, the connecting rod is connected with the executor, the inlet end of valve body is provided with the filtration casing, be provided with inlet and liquid outlet on the filtration casing, the liquid outlet with the import intercommunication of valve body, be provided with the filter chamber in the filtration casing, be provided with the filter core in the filter chamber, the filter chamber with the inlet with the liquid outlet all communicates. Through setting up filtration casing and filter core can filter the impurity in the liquid, reduce the wearing and tearing of impurity to valve body and case, extension proportional control valve's life.

Further, the filtering shell is provided with a cleaning hole, the cleaning hole is communicated with the filtering cavity, a drain outlet is formed in the valve body, the drain outlet is communicated with an inlet of the valve body, and an end cover is detachably arranged on the drain outlet. Can carry out the clearance that does not dismantle to the filter core through wash hole and blowdown hole, convenient operation.

Further, the filter housing upper portion can be dismantled and be provided with the connecting seat, the connecting seat is located the upper end of filter chamber, the connecting seat top is provided with the spacing dish, the spacing dish can with filter housing surface butt, be provided with a word groove on the spacing dish. The filter element is convenient to disassemble, assemble and replace through the connecting seat.

Further, the filter housing is detachably connected with the valve body. The adoption of the separated structure can only be realized by replacing a part of the corresponding valve body or the filtering shell, and the waste caused by the fact that the other part is replaced due to the fact that one part needs to be replaced is avoided.

Further, the valve core is of a hollow structure, at least four liquid passing holes are formed in the circumferential surface of the valve core, the liquid passing holes are rectangular holes, and the length direction of the liquid passing holes is parallel to the axis direction of the valve core. The flow can be controlled more accurately through the rectangular hole-shaped liquid passing holes.

Furthermore, the valve core and the valve body are made of PVC or polytetrafluoroethylene. The corrosion resistance of the valve can be improved.

From the above technical scheme, the utility model has the following advantages:

the scheme provides a proportional control valve, through setting up filtration casing and filter core can filter the impurity in the liquid, reduces the wearing and tearing of impurity to valve body and case, prolongs proportional control valve's life; the filter core can be cleaned in a non-detachable way through the cleaning holes and the pollution discharge holes, so that the operation is convenient; the filter element is convenient to disassemble, assemble and replace through the connecting seat; the adoption of the separated structure can only need to replace a part of the corresponding valve body or the filtering shell, and the other part is not wasted because one part needs to be replaced; the flow can be more accurately controlled through the rectangular hole-shaped liquid passing holes; the corrosion resistance of the valve can be improved by adopting PVC or polytetrafluoroethylene materials.

Drawings

In order to more clearly illustrate the technical solutions of the present utility model, the drawings that are needed in the description will be briefly introduced below, it being obvious that the drawings in the following description are only some embodiments of the present utility model, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.

Fig. 1 is a schematic structural diagram of an embodiment of the present utility model.

In the figure, 1, connecting rod, 2, case, 4, valve body, 5, export, 6, end cover, 7, drain, 8, mounting screw, 9, wash port, 10, inlet, 11, filter core, 12, liquid outlet, 13, filter housing, 14, connecting seat.

Detailed Description

In order to make the objects, features and advantages of the present utility model more obvious and understandable, the technical solutions of the present utility model will be clearly and completely described below with reference to the drawings in this specific embodiment, and it is apparent that the embodiments described below are only some embodiments of the present utility model, but not all embodiments of the present utility model. All other embodiments, based on the embodiments in this patent, which would be within the purview of one of ordinary skill in the art without the particular effort to make the utility model are intended to be within the scope of the patent protection.

As shown in fig. 1, this embodiment provides a proportional control valve, including a valve body 4 and a valve core 2, a sealing cavity is provided in the valve body 4, the upper and lower ends of the sealing cavity are respectively communicated with an outlet 5 and an inlet, the valve core 2 is movably provided in the sealing cavity up and down, the outer surface of the valve core 2 is attached to the inner wall of the sealing cavity to realize sealing, the valve core 2 is of a hollow structure, at least four liquid passing holes are provided on the circumferential surface of the valve core 2, in this embodiment, 8 liquid passing holes are provided, when the valve core 2 moves up and down, the area of the liquid passing holes opposite to the outlet 5 of the valve body 4 changes, thereby changing the flow, the liquid passing holes are rectangular holes, the length direction of the liquid passing holes is parallel to the axial direction of the valve core 2, and by setting the liquid passing holes as rectangular holes, the flow adjustment range can be increased and refined; in order to improve the corrosion resistance, the valve core 2 and the valve body 4 are made of PVC or polytetrafluoroethylene; the valve core 2 is provided with a connecting rod 1, the connecting rod 1 is connected with an actuator, and the actuator controls the valve core 2 to move up and down; the water inlet end of the valve body 4 is provided with a filter shell 13, the filter shell 13 is provided with a liquid inlet 10 and a liquid outlet 12, the liquid outlet 12 is communicated with the inlet of the valve body 4, a filter cavity is arranged in the filter shell 13, a filter core 11 is arranged in the filter cavity, and the filter cavity is communicated with the liquid inlet 10 and the liquid outlet 12;

as shown in fig. 1, in order to facilitate cleaning of the filter core 11 at regular intervals, the filter housing 13 is provided with a cleaning hole, the cleaning hole 9 is arranged at the bottom of the filter body, the cleaning hole 9 is communicated with the filter cavity, the valve body 4 is provided with a drain outlet 7, the lower end of the seal cavity is positioned at the drain outlet 7 and communicated with the inlet of the valve body 4, the drain outlet 7 is provided with an end cover 6 through threads, and the filter core 11 is removed when cleaned; the upper part of the filter core 11 is provided with a connecting seat 14 through insertion, the connecting seat 14 is positioned at the upper end of the filter cavity, the connecting seat 14 is detachably connected with the filter shell 13 through a clamping groove or threads, the top of the connecting seat 14 is provided with a limiting disc, the lower end surface of the limiting disc can be abutted with the outer surface of the filter shell 13, and the limiting disc is provided with a straight groove;

the filter shell 13 is detachably connected with the valve body 4 through the mounting screw 8, when one of the filter shell and the valve body needs to be replaced, the mounting screw 8 is detached, and the mounting screw 8 penetrates through the filter element 11, so that the other part which does not need to be replaced is not needed to be abandoned, resources are saved, and the use cost is reduced.

The cleaning method of the proportional control valve comprises the following steps:

when the filter core 11 needs to be cleaned, the valve core 2 is opposite to the outlet 5, the proportional control valve is in a closed state, the end cover 6 is opened, the cleaning hole 8 is communicated with cleaning water, the filter core 11 is cleaned, sewage flows out of the valve from the sewage outlet 7, and the end cover 6 is arranged after the cleaning is finished; when the filter element needs to be replaced, the mounting screw 8 penetrating through the filter element 11 is dismounted, the filter element 11 is taken out after the connecting seat 14 is dismounted, a new filter element is inserted on the connecting seat 14, the filter shell 13 is reinstalled, and then the mounting screw 8 penetrates through the filter element 11 to be screwed.

The following beneficial effects can be seen from the specific embodiment:

1. the impurities in the liquid can be filtered through the filter shell 13 and the filter element, so that the abrasion of the impurities to the valve body 4 and the valve core 2 is reduced, and the service life of the proportional control valve is prolonged;

2. the filter element 11 can be cleaned in a non-detachable way through the cleaning holes and the pollution discharge holes, so that the operation is convenient; the filter element 11 is convenient to disassemble, assemble and replace through the connecting seat 14;

3. the adoption of the separated structure can only replace a part of the corresponding valve body 4 or the filtering shell 13, and the other part is replaced due to the fact that one part needs to be replaced, so that waste is avoided;

4. the flow can be more accurately controlled through the rectangular hole-shaped liquid passing holes;

5. the corrosion resistance of the valve can be improved by adopting PVC materials or polytetrafluoroethylene materials.

The terms "upper," "lower," "outboard," "inboard," and the like in the description and in the claims of the utility model and in the above figures, if any, are used for distinguishing between relative relationships in position and not necessarily for giving qualitative sense. It is to be understood that the data so used may be interchanged where appropriate such that the embodiments of the utility model described herein may be implemented in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprise" and "have," as well as any variations thereof, are intended to cover a non-exclusive inclusion.

The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present utility model. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the utility model. Thus, the present utility model is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The utility model provides a proportional control valve, including valve body (4) and case (2), be provided with connecting rod (1) on case (2), connecting rod (1) are connected with the executor, its characterized in that, the water inlet of valve body (4) is provided with filtration casing (13), be provided with inlet (10) and liquid outlet (12) on filtration casing (13), the import intercommunication of liquid outlet (12) and valve body (4), be provided with the filter chamber in filtration casing (13), be provided with filter core (11) in the filter chamber, filter chamber and inlet (10) and liquid outlet (12) all communicate.

2. A proportional control valve as claimed in claim 1, characterized in that the filter housing (13) is provided with a cleaning aperture (9), the cleaning aperture (9) being in communication with the filter chamber, the valve body (4) being provided with a drain outlet (7), the drain outlet (7) being in communication with the inlet of the valve body (4), the drain outlet (7) being provided with an end cap (6) detachably.

3. A proportional control valve as claimed in claim 2, characterized in that the upper part of the filter housing (13) is detachably provided with a connecting seat (14), the connecting seat (14) is positioned at the upper end of the filter cavity, the top of the connecting seat (14) is provided with a limiting disc, the limiting disc can be abutted with the outer surface of the filter housing (13), and a linear groove is arranged on the limiting disc.

4. A proportional control valve as claimed in claim 1, characterized in that the filter housing (13) is detachably connected to the valve body (4).

5. The proportional control valve according to claim 4, wherein the valve core (2) has a hollow structure, at least four liquid passing holes are formed in the circumferential surface of the valve core (2), the liquid passing holes are rectangular holes, and the length direction of the liquid passing holes is parallel to the axis direction of the valve core (2).

6. A proportional control valve as claimed in claim 1, characterized in that the valve element (2) and the valve body (4) are both made of PVC or polytetrafluoroethylene.