CN216157984U - Automatic electromagnetic unloading valve for high-flow mine - Google Patents
Automatic electromagnetic unloading valve for high-flow mine Download PDFInfo
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- CN216157984U CN216157984U CN202122216282.7U CN202122216282U CN216157984U CN 216157984 U CN216157984 U CN 216157984U CN 202122216282 U CN202122216282 U CN 202122216282U CN 216157984 U CN216157984 U CN 216157984U
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Abstract
The utility model provides a high-flow mining automatic electromagnetic unloading valve, which comprises a main valve, a one-way valve, a mechanical pilot valve, a bypass valve, an electronic pilot valve and a pressure assembly, wherein the main valve is connected with the one-way valve through a pressure pipe; the lower end of the main valve is provided with a one-way valve, and a pipeline is arranged between the main valve and the one-way valve and is connected with the main valve through the pipeline; a pipeline is arranged between the main valve and the electronic pilot valve and is connected with the main valve through the pipeline; the mechanical pilot valve is connected with the bypass valve through a pipeline; the pressure assembly is connected with the main valve and the electronic pilot valve through a wire control. According to the hydraulic control system, the liquid behind the electromagnetic control one-way valve is cut off through the bypass valve, so that the mechanical pilot valve is in a non-back pressure state, and a half-open and half-close state of the mechanical pilot valve is avoided. The high-pressure emulsion is cut off to enter the lower cavity of the mechanical pilot valve by matching the bypass valve seat and the steel ball, so that the valve rod of the mechanical pilot valve does not participate in the unloading process of the whole unloading valve in the whole process.
Description
Technical Field
The utility model relates to the field of electromagnetic unloading valve equipment manufacturing, in particular to a high-flow mining automatic electromagnetic unloading valve.
Background
The unloading valve of the emulsion pump station is one of important parts for controlling pressure in a hydraulic system, is a control element for realizing automatic pressure regulation of the hydraulic system, and basically adopts the mode of additionally arranging an electronic pilot valve in a mechanical pilot valve channel to realize electronic control on the pressure along with the increasing automation degree of coal mining.
For example, chinese patent CN206159153U discloses a hydraulic element, which is an automatic unloading valve, and can be arbitrarily selected between two pilot modes, namely mechanical pilot and electromagnetic pilot, to regulate and control the unloading pressure of the pump to quickly respond to the unloading of the pump; an automatic unloading valve comprises a one-way valve, an unloading valve, a mechanical pilot valve and an electromagnetic pilot valve; the front cavity of the one-way valve is communicated with the pump; the unloading valve front cavity is communicated with the pump, the unloading valve rear cavity and the unloading valve top cavity are communicated with the liquid tank, and the unloading valve top cavity is communicated with the working surface power liquid path; the front cavity of the mechanical pilot valve is communicated with the back cavity of the one-way valve and the unloading valve top cavity, and the back cavity of the mechanical pilot valve is communicated with the liquid tank; the opening pressure of the unloading valve sealing pair is greater than that of the one-way valve sealing pair; the electromagnetic pilot valve sets and adjusts the working pressure of the system through an electric cabinet and a pressure sensor; the electromagnetic pilot valve is connected with the mechanical pilot valve in parallel. However, by means of the mechanical pilot valve channel, if the pressure set by the mechanical pilot valve is not much different from the pressure set by the electromagnetic control, the mechanical pilot valve is in a half-open and half-closed state, high-pressure liquid return is caused, and the temperature of the emulsion in the liquid tank is increased.
For example, chinese patent CN113339339A discloses an unloading valve pressure control device, which comprises an unloading valve main body and a pressure control assembly engaged with the upper end of the unloading valve main body; the structure of the pressure control assembly is as follows: the unloading valve comprises a working platform, wherein the lower surface of the working platform is attached to the upper surface of an unloading valve main body, a guide rail is installed at one end of the upper surface of the working platform, the other end of the upper surface of the working platform is fixedly connected with a fixed block, a power device is installed above the fixed block, an output end of the power device is provided with an executing mechanism, the power device controls the translation action of the executing mechanism, the output end of the executing mechanism is connected with a pilot valve component located inside the unloading valve main body, and the executing mechanism controls the pilot valve component to move up and down. The pressure control can be timely and effectively carried out on the unloading valve, the pressure fluctuation is small, the reliability is high, the zero-pressure starting can be realized, and the processing and maintenance cost is low. But still does not solve the problem of a mechanical pilot valve being in a semi-open and semi-closed state.
Therefore, how to provide a large-flow mining automatic electromagnetic unloading valve, which overcomes the problem that the main valve of the unloading valve is in a half-open and half-closed state, is a technical problem to be solved urgently in the field.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the application provides a large-flow mining automatic electromagnetic unloading valve. The specific technical scheme is as follows.
A high-flow mining automatic electromagnetic unloading valve is characterized by comprising a main valve, a one-way valve, a mechanical pilot valve, a bypass valve, an electronic pilot valve and a pressure assembly;
the lower end of the main valve is provided with a one-way valve, and a pipeline is arranged between the main valve and the one-way valve and is connected with the main valve through the pipeline;
a pipeline is arranged between the main valve and the electronic pilot valve and is connected with the main valve through the pipeline;
the mechanical pilot valve is connected with the bypass valve through a pipeline;
the pressure assembly is connected with the main valve and the electronic pilot valve through a wire control.
Preferably, one side of the bypass valve is connected with the one-way valve through a pipeline, one side of the bypass valve is connected with the main valve through a pipeline, the pipeline connected with the main valve is arranged in the middle of the bypass valve, and the pipeline is switched on and off;
the center of the bypass valve is provided with a hollow pipeline, a mandril and a steel ball, and the hollow pipeline, the mandril and the steel ball are used for cutting off high-pressure emulsion to enter the mechanical pilot valve under the condition that the electronic pilot valve controls the unloading valve;
the top of the bypass valve is provided with a bypass valve core and a bypass valve seat, and the bypass valve core is located in the bypass valve seat.
Preferably, the one-way valve comprises a one-way valve core seat, a one-way valve core and a one-way valve spring;
the one-way valve core seat is arranged in the one-way valve screw sleeve;
the check valve core seat is of a U-shaped structure, and a check valve core and a check valve spring are arranged in the check valve core seat.
Preferably, the number of the one-way valve springs is more than 2, one end of each one-way valve spring is connected with the one-way valve core seat, and the other end of each one-way valve spring is connected with the one-way valve core.
Preferably, the pressure assembly is of an L-shaped structure in overall shape, and the main components comprise a pressure gauge protective cover, a pressure gauge, a pressure sensing control assembly, a bayonet lock, an upper pipe and a bent pipe;
the elbow pipe is arranged at the bottom end of the pressure assembly and is connected with the upper pipe in a clamping manner through a clamping pin;
the pressure gauge protective cover is arranged in the upper pipe and is fixedly connected with the upper pipe, and the pressure gauge is fixed on the pressure gauge protective cover;
the pressure sensing control assembly is directly connected with the pressure gauge.
Preferably, the main valve comprises a main valve core seat, a main valve core, a main valve screw sleeve and a main valve spring;
the main valve core is arranged in the main valve core seat, the main valve core seat is of a U-shaped structure, and a main valve threaded sleeve is arranged at the upper part of the main valve core;
one end of the main valve spring is connected with the main valve core, and the other end of the main valve spring is connected with the main valve threaded sleeve.
Preferably, a pilot valve spool is further arranged on the left side of the main valve, a plug is arranged on the upper portion of the pilot valve spool, and the pilot valve spool is respectively connected with the bypass valve and the main valve through pipelines.
Preferably, the electronic pilot valve is connected with the main valve through an unloading liquid return channel.
Preferably, the pressure sensing control assembly is connected with the electronic pilot valve and the main valve through a wireless transmission module, and can control the electronic pilot valve to be powered off or powered on.
Preferably, the mechanical pilot valve is provided with a mechanical pilot valve rear cavity, and the mechanical pilot valve rear cavity is connected with the main valve through a pipeline connecting bypass valve.
Compared with the prior art, the technical scheme of the utility model has the following beneficial effects:
(1) the utility model provides a novel unloading valve structure which mainly comprises a main valve, a one-way valve, a mechanical pilot valve, a bypass valve and an electronic pilot valve. The bypass valve is used for cutting off liquid behind the one-way valve, so that the mechanical pilot valve is in a non-back pressure state under the condition of electromagnetic control of the unloading valve, and the semi-open and semi-close states of the mechanical pilot valve are avoided.
(2) According to the utility model, the ejector rod at the bypass valve is matched with the bypass valve seat and the steel ball, and under the condition that the unloading valve is controlled by the electronic pilot valve, high-pressure emulsion is cut off to enter the lower cavity of the mechanical pilot valve, so that the valve rod of the mechanical pilot valve has no pressure and does not participate in the unloading action of the whole unloading valve in the whole process, and the problem that the temperature of a liquid tank is increased and a pump station is damaged due to the fact that the main valve cannot be closed in time in the traditional electromagnetic unloading valve is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts. Throughout the drawings, like elements or portions are generally identified by like reference numerals. In the drawings, elements or portions are not necessarily drawn to scale.
FIG. 1 is an overall structure diagram of a high-flow mining automatic electromagnetic unloading valve;
FIG. 2 is a structure diagram of a main valve and a one-way valve of a high-flow mining automatic electromagnetic unloading valve;
FIG. 3 is a structural diagram of a pressure assembly of a high-flow mining automatic electromagnetic unloading valve;
reference numerals
1. A main valve; 2. a one-way valve; 3. a mechanical pilot valve; 4. a bypass valve; 5. an electronic pilot valve; 6. a pressure assembly; 7. A one-way valve core; 8. a pressure gauge; 9. a main valve element; 10. a pilot valve spool.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. In the following description, specific details such as specific configurations and components are provided only to help the embodiments of the present application be fully understood. Accordingly, it will be apparent to those skilled in the art that various changes and modifications may be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, descriptions of well-known functions and constructions are omitted in the embodiments for clarity and conciseness.
It should be appreciated that reference throughout this specification to "one embodiment" or "the embodiment" means that a particular feature, structure or characteristic described in connection with the embodiment is included in at least one embodiment of the present application. Thus, the appearances of the phrase "one embodiment" or "the present embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.
Further, the present application may repeat reference numerals and/or letters in the various examples. This repetition is for the purpose of simplicity and clarity and does not in itself dictate a relationship between the various embodiments and/or configurations discussed.
The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, B exists alone, and A and B exist at the same time, and the term "/and" is used herein to describe another association object relationship, which means that two relationships may exist, for example, A/and B, may mean: a alone, and both a and B alone, and further, the character "/" in this document generally means that the former and latter associated objects are in an "or" relationship.
The term "at least one" herein is merely an association relationship describing an associated object, and means that there may be three relationships, for example, at least one of a and B, may mean: a exists alone, A and B exist simultaneously, and B exists alone.
It is further noted that, herein, relational terms such as first and second, and the like may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion.
Example 1
Referring to fig. 1-3, the present embodiment mainly describes the composition and connection relationship of a high-flow mining automatic electromagnetic unloading valve.
A high-flow mining automatic electromagnetic unloading valve is characterized by comprising a main valve 1, a one-way valve 2, a mechanical pilot valve 3, a bypass valve 4, an electronic pilot valve 5 and a pressure assembly 6;
the lower end of the main valve 1 is provided with a one-way valve 2, and a pipeline is arranged between the main valve 1 and the one-way valve 2 and is connected with the main valve through the pipeline;
a pipeline is arranged between the main valve 1 and the electronic pilot valve 5 and is connected through the pipeline;
the mechanical pilot valve 3 is connected with the bypass valve 4 through a pipeline;
the pressure assembly 6 is connected with the main valve 1 and the electronic pilot valve 5 through a wire control.
Furthermore, one side of the bypass valve 4 is connected with the one-way valve 2 through a pipeline, one side of the bypass valve is connected with the main valve 1 through a pipeline, the pipeline connected with the main valve 1 is arranged in the middle of the bypass valve 4, and the pipeline is opened and closed;
a hollow pipeline, a mandril and a steel ball are arranged in the center of the bypass valve 4 and used for cutting off high-pressure emulsion to enter the mechanical pilot valve 3 under the condition that the electronic pilot valve 5 controls the unloading valve;
the top of the bypass valve 4 is provided with a bypass valve core and a bypass valve seat, and the bypass valve core is located in the bypass valve seat.
Further, the check valve 2 comprises a check valve core seat, a check valve core 7 and a check valve spring;
the one-way valve core seat is arranged in the one-way valve screw sleeve;
the one-way valve core seat is of a U-shaped structure, and the one-way valve core 7 and the one-way valve spring are arranged in the one-way valve core seat.
Furthermore, the number of the one-way valve springs is more than 2, one end of each one-way valve spring is connected with the one-way valve core seat, and the other end of each one-way valve spring is connected with the one-way valve core 7.
Further, the pressure assembly 6 is of an L-shaped structure in overall shape, and comprises a pressure gauge protective cover, a pressure gauge 8, a pressure sensing control assembly, a bayonet lock, an upper pipe and a bent pipe;
the elbow pipe is arranged at the bottom end of the pressure assembly 6 and is connected with the upper pipe in a clamping manner through a clamping pin;
the pressure gauge protective cover is arranged in the upper pipe and is fixedly connected with the upper pipe, and the pressure gauge 8 is fixed on the pressure gauge protective cover;
the pressure sensing control assembly is directly connected with the pressure gauge 8.
Further, the main valve 1 comprises a main valve core seat, a main valve core 9, a main valve screw sleeve and a main valve spring;
the main valve core 9 is seated in a main valve core seat which is of a U-shaped structure, and a main valve threaded sleeve is arranged at the upper part of the main valve core 9;
one end of the main valve spring is connected with the main valve core 9, and the other end of the main valve spring is connected with the main valve threaded sleeve.
Further, a pilot valve spool 10 is further arranged on the left side of the main valve 1, a plug is arranged on the upper portion of the pilot valve spool 10, and the pilot valve spool 10 is respectively connected with the bypass valve 4 and the main valve 1 through a pipeline.
Further, the electronic pilot valve 5 is connected with the main valve 1 through an unloading liquid return channel.
Further, the pressure sensing control assembly is connected with the electronic pilot valve 5 and the main valve 1 through a wireless transmission module, and can control the electronic pilot valve 5 to be powered off or powered on.
Further, the mechanical pilot valve 3 is provided with a mechanical pilot valve rear cavity, and the mechanical pilot valve rear cavity is connected with the main valve 1 through a pipeline connection bypass valve 4.
The bypass valve is used for cutting off liquid behind the one-way valve, so that the mechanical pilot valve is in a non-back pressure state under the condition of electromagnetic control of the unloading valve, and the semi-open and semi-close states of the mechanical pilot valve are avoided.
Example 2
Based on example 1, this example further discusses the liquid flow direction of the unloading valve of the present device.
The liquid output by the emulsion pump station reaches the liquid inlet of the unloading valve, the liquid is divided into four paths, and the first path flushes the one-way valve 2 to supply liquid to the support system; the second path of high-pressure emulsion which washes the one-way valve 2 through the bypass valve 4 reaches the bypass valve 4, at the moment, the bypass valve 4 is in a closed state, and the high-pressure emulsion is cut off to enter a rear cavity of a pilot valve ejector rod; the third path of high-pressure emulsion from the pump passes through the intermediate control loop, passes through the high-pressure filter, enters the upper cavity of the main valve core through the electronic pilot valve 5 and the main valve body, and gives a downward thrust to the main valve core to close the main valve 1; and in the fourth path, when the pressure reaches the unloading pressure of the unloading valve, the main valve 1 is opened, and the low-pressure emulsion enters an unloading liquid return channel. When the valve receives a pressure signal from a pressure sensor and reaches the set unloading pressure, the electronic pilot valve 5 is controlled to lose power, high-pressure liquid in the upper cavity of the main valve core is enabled to flow to an unloading liquid return channel through the electronic pilot valve 5 while the high-pressure liquid is cut off from entering the upper cavity of the main valve core, at the moment, the main valve 1 is opened due to the loss of support, and meanwhile, the one-way valve 2 is closed under the action of the emulsified hydraulic pressure, so that the pump station is in a no-load running state. When the support reuses liquid or the system leaks, the pressure sensor detects that the system pressure reaches the set recovery pressure, the electronic pilot valve is controlled to be powered on, the communication between the upper cavity of the main valve spool and the unloading liquid return channel is cut off, and meanwhile, the high-pressure emulsion of the pump and the channel of the upper cavity of the main valve are connected, so that the main valve 1 is immediately closed under the action of spring force and hydraulic pressure, and the high-pressure liquid supply state of the pump station is recovered.
Example 3
Based on example 1 and example 2, this example further discusses the advantages of the present device.
The ejector rod of bypass valve 4 department cooperates bypass valve seat and steel ball, under the circumstances of the unloading valve of electronic pilot valve 5 control, cuts off high-pressure emulsion and gets into the mechanical pilot valve cavity of resorption for the unloading action of whole unloading valve is not participated in owing to there is not pressure to mechanical pilot valve 3 valve rod, has avoided traditional electromagnetism unloading valve to rise because the liquid case temperature that main valve 1 can't in time close and lead to, damages the pump station.
Meanwhile, the traditional electromagnetic unloading valve is characterized in that the electronic pilot valve 5 is directly additionally arranged on the mechanical pilot valve 3, once the electronic pilot valve 5 is damaged, the electronic pilot valve 5 can only be detached, and meanwhile, a blank plate is required to plug the channel for installing the electronic pilot valve 5. In the utility model, due to the existence of the bypass valve 4, the electronic and mechanical switching can be completed only by opening the bypass valve 4 and enabling the high-pressure emulsion to enter the lower cavity of the mechanical pilot valve 3. The emergency speed is greatly improved. The situation that the emulsion pump station cannot work normally due to the fact that the cover is not closed is avoided.
The above description is only a preferred embodiment of the present invention, and it is not intended to limit the scope of the present invention, and various modifications and changes may be made by those skilled in the art. Variations, modifications, substitutions, integrations and parameter changes of the embodiments may be made without departing from the principle and spirit of the utility model, which may be within the spirit and principle of the utility model, by conventional substitution or may realize the same function.
Claims (10)
1. A high-flow mining automatic electromagnetic unloading valve is characterized by comprising a main valve (1), a one-way valve (2), a mechanical pilot valve (3), a bypass valve (4), an electronic pilot valve (5) and a pressure assembly (6);
the lower end of the main valve (1) is provided with a one-way valve (2), and a pipeline is arranged between the main valve (1) and the one-way valve (2) and is connected with the main valve through the pipeline;
a pipeline is arranged between the main valve (1) and the electronic pilot valve (5) and is connected with the main valve through the pipeline;
the mechanical pilot valve (3) is connected with the bypass valve (4) through a pipeline;
the pressure assembly (6) is connected with the main valve (1) and the electronic pilot valve (5) through a wire control.
2. The automatic high-flow electromagnetic unloading valve for the mine according to claim 1, wherein one side of the bypass valve (4) is connected with the one-way valve (2) through a pipeline, the other side of the bypass valve is connected with the main valve (1) through a pipeline, the pipeline connected with the main valve (1) is arranged in the middle of the bypass valve (4), and the pipeline is opened and closed;
a hollow pipeline, a mandril and a steel ball are arranged in the center of the bypass valve (4) and used for cutting off high-pressure emulsion from entering the mechanical pilot valve (3) under the condition that the electronic pilot valve (5) controls the unloading valve;
the top of the bypass valve (4) is provided with a bypass valve core and a bypass valve seat, and the bypass valve core is located in the bypass valve seat.
3. The mining automatic electromagnetic unloading valve with high flow rate according to claim 1, characterized in that the check valve (2) comprises a check valve core seat, a check valve core (7) and a check valve spring;
the one-way valve core seat is arranged in the one-way valve screw sleeve;
the check valve core seat is of a U-shaped structure, and a check valve core (7) and a check valve spring are arranged in the check valve core seat.
4. The mining automatic electromagnetic unloading valve with high flow rate according to claim 3, characterized in that the number of the check valve springs is more than 2, one end of each check valve spring is connected with a check valve core seat, and the other end is connected with a check valve core (7).
5. The automatic high-flow mining electromagnetic unloading valve according to claim 1, wherein the pressure assembly (6) is of an L-shaped overall shape, and the main components comprise a pressure gauge protective cover, a pressure gauge (8), a pressure sensing control assembly, a clamping pin, an upper pipe and a bent pipe;
the elbow pipe is arranged at the bottom end of the pressure assembly (6) and is connected with the upper pipe in a clamping manner through a clamping pin;
the pressure gauge protective cover is arranged in the upper pipe and is fixedly connected with the upper pipe, and the pressure gauge (8) is fixed on the pressure gauge protective cover;
the pressure sensing control assembly is directly connected with a pressure gauge (8).
6. The mining automatic electromagnetic unloading valve with high flow rate according to claim 1, characterized in that the main valve (1) comprises a main valve core seat, a main valve core (9), a main valve screw sleeve and a main valve spring;
the main valve core (9) is arranged in a main valve core seat which is of a U-shaped structure, and a main valve threaded sleeve is arranged at the upper part of the main valve core (9);
one end of the main valve spring is connected with the main valve core (9), and the other end of the main valve spring is connected with the main valve threaded sleeve.
7. The high-flow mining automatic electromagnetic unloading valve according to claim 6, characterized in that a pilot valve spool (10) is further arranged on the left side of the main valve (1), a plug is arranged on the upper portion of the pilot valve spool (10), and the pilot valve spool (10) is connected with the bypass valve (4) and the main valve (1) through pipelines respectively.
8. The mining automatic electromagnetic unloading valve with high flow rate according to claim 1, characterized in that the electronic pilot valve (5) is connected with the main valve (1) through an unloading liquid return channel.
9. The high-flow mining automatic electromagnetic unloading valve according to claim 5, wherein the pressure sensing control assembly is connected with the electronic pilot valve (5) and the main valve (1) through a wireless transmission module, and can control the electronic pilot valve (5) to be powered off or powered on.
10. The high-flow mining automatic electromagnetic unloading valve according to claim 1, characterized in that the mechanical pilot valve (3) is provided with a mechanical pilot valve rear cavity, and the mechanical pilot valve rear cavity is connected with the main valve (1) through a pipeline connection bypass valve (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122216282.7U CN216157984U (en) | 2021-09-14 | 2021-09-14 | Automatic electromagnetic unloading valve for high-flow mine |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122216282.7U CN216157984U (en) | 2021-09-14 | 2021-09-14 | Automatic electromagnetic unloading valve for high-flow mine |
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| CN216157984U true CN216157984U (en) | 2022-04-01 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117570077A (en) * | 2024-01-16 | 2024-02-20 | 无锡煤矿机械股份有限公司 | Unloading valve |
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2021
- 2021-09-14 CN CN202122216282.7U patent/CN216157984U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117570077A (en) * | 2024-01-16 | 2024-02-20 | 无锡煤矿机械股份有限公司 | Unloading valve |
| CN117570077B (en) * | 2024-01-16 | 2024-03-19 | 无锡煤矿机械股份有限公司 | Unloading valve |
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