Pump body nitrogen saving device
By designing a parallel purging pipeline with an inner diameter half that of the original main pipeline and using solenoid valve control, the problem of nitrogen waste during process intervals in dry vacuum pump units was solved, achieving a reduction in nitrogen usage and energy conservation and environmental protection.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- ZHEJIANG BOYA PRECISION MASCH CO LTD
- Filing Date
- 2025-12-29
- Publication Date
- 2026-04-10
AI Technical Summary
Conventional dry vacuum pump units waste nitrogen during process intervals due to metered nitrogen purging, and lack energy-saving and environmentally friendly solutions.
A nitrogen-saving device for pump body was designed. It is controlled by two parallel purging pipelines with an inner diameter half that of the original main pipeline and a solenoid valve. The solenoid valve is closed during process intervals using a delay module to reduce nitrogen flow.
This achieves the goal of reducing nitrogen usage during process breaks, thus saving energy and protecting the environment.
Smart Images
Figure CN121820249A_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The present application relates to the technical field of vacuum pump accessories, in particular to a pump body nitrogen saving device. BACKGROUND
[0002] The conventional dry vacuum pump unit nitrogen purging is constant quantitative purging, which can realize the cleaning function of the cavity, but the pump is not always in working state, and the constant quantitative purging of nitrogen is undoubtedly a waste of nitrogen during the process intermittent period, so there is an urgent need for an environment-friendly device to save nitrogen during the process intermittent period. SUMMARY
[0003] The present application aims to provide a pump body nitrogen saving device to solve the problems in the background art.
[0004] To solve the above technical problems, the present application is realized by the following technical scheme: a pump body nitrogen saving device, comprising: A first purging pipeline; A second purging pipeline connected in parallel with the first purging pipeline; An electromagnetic valve connected in series with the second purging pipeline, which is used to open and close the second purging pipeline; Wherein, one end of the first purging pipeline and the second purging pipeline is communicated by a first three-way pipe and forms an air inlet end, and the other end of the first purging pipeline and the second purging pipeline is communicated by a second three-way pipe and forms an air outlet end.
[0005] Further, the first purging pipeline comprises a first main pipe and a first branch pipe bent at both ends of the first main pipe.
[0006] Further, the second purging pipeline comprises a second main pipe and a second branch pipe bent at both ends of the second main pipe.
[0007] Further, the first main pipe and the second main pipe are arranged in parallel and located at opposite ends of the electromagnetic valve.
[0008] Further, the first branch pipe and the second branch pipe on both sides are connected in communication by the first three-way pipe and the second three-way pipe.
[0009] Further, an adapter is cut and communicated in the middle of the second main pipe, and the adapter is used to access the electromagnetic valve.
[0010] The present application has the following beneficial effects: The present application controls the on-off of the two parallel branches by the electromagnetic valve to realize the control of the nitrogen purging amount, wherein the inner diameter of the two parallel branches is half of the original main pipeline inner diameter, and after the constant opening electromagnetic valve is controlled to be closed by the "process intermittent period" delay module, the nitrogen amount is reduced to half, the nitrogen saving is realized, and the energy saving and environmental protection are achieved. Attached Figure Description
[0011] To more clearly illustrate the technical solutions of the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0012] Figure 1 This is a schematic diagram of the nitrogen saving device for the pump body in Example 1; Figure 2 for Figure 1 The diagram is a partial enlargement and does not include the solenoid valve. Detailed Implementation
[0013] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.
[0014] Example 1 like Figures 1-2 As shown, the nitrogen saving device for the pump body in this embodiment is mainly composed of a first purge pipe 10, a second purge pipe 20 connected in parallel with the first purge pipe 10, a solenoid valve 30 connected in series with the second purge pipe 20, a first three-way valve 40 and a second three-way valve 50. The solenoid valve 30 is used to open and close the second purge pipe 20.
[0015] Specifically, one end of the first purge pipe 10 and the second purge pipe 20 are connected through the first tee 40 to form an air inlet 101, and the other end of the first purge pipe 10 and the second purge pipe 20 are connected through the second tee 50 to form an air outlet 102.
[0016] Here, the diameter of the first purge line 10 and the second purge line 20 is the same and is 1 / 2 of the original line diameter. That is, assuming that there is only one original line with an inner diameter of 4mm, the first purge line 10 and the second purge line 20 form two purge lines with an inner diameter of 2mm.
[0017] The first blowing pipeline 10 comprises a first main pipe 11 and first branch pipes 12 which are bent at both ends of the first main pipe 11, and the second blowing pipeline 20 comprises a second main pipe 21 and second branch pipes 22 which are bent at both ends of the second main pipe 21; the first main pipe 11 and the second main pipe 21 are arranged in parallel and located at opposite ends of the electromagnetic valve 30; the first branch pipes 12 and the second branch pipes 22 on both sides are communicated through a first three-way pipe 40 and a second three-way pipe 50 respectively.
[0018] Here, the second main pipe 21 is cut in the middle and communicated with an adapter 23, and the adapter 23 is used to access the electromagnetic valve 30.
[0019] The application can be used in cooperation with a delay module in a control circuit board. The delay module controls the on-off of a normally open electromagnetic valve. Under normal circumstances, two branches are in an open state, and the total flow of nitrogen blowing is a preset flow. When entering a "process stop state", the delay module controls the electromagnetic valve to close with a delay, the branch is disconnected, and the total flow of nitrogen blowing is half of the preset flow, so as to realize energy saving and environmental protection.
[0020] The preferred embodiments disclosed above are only used to help explain the application. The preferred embodiments do not describe all the details and do not limit the application to the specific embodiments described. Obviously, according to the content of the specification, many modifications and changes can be made. The specification selects and describes these embodiments in order to better explain the principles and practical applications of the application, so that those skilled in the art can well understand and utilize the application. The application is limited by the claims and their entire scope and equivalents.
Claims
1. A nitrogen-saving device for a pump body, characterized in that, include: First purge line; A second purging line connected in parallel with the first purging line; A solenoid valve connected in series with the second purge line, the solenoid valve being used to open and close the second purge line; The first purge pipe and the second purge pipe are connected at one end through a first tee to form an air inlet, and the other end of the first purge pipe and the second purge pipe are connected through a second tee to form an air outlet.
2. The nitrogen-saving device for a pump body according to claim 1, characterized in that: The first purging pipeline includes a first main pipe and a first branch pipe that is bent at both ends of the first main pipe.
3. A nitrogen-saving device for a pump body according to claim 2, characterized in that: The second purging pipeline includes a second main pipe and a second branch pipe that is bent at both ends of the second main pipe.
4. A nitrogen-saving device for a pump body according to claim 3, characterized in that: The first main pipe and the second main pipe are arranged in parallel and located at opposite ends of the solenoid valve.
5. A nitrogen-saving device for a pump body according to claim 4, characterized in that: The first and second branch pipes on both sides are connected by a first tee and a second tee, respectively.
6. A nitrogen-saving device for a pump body according to claim 3, characterized in that: The second main pipe is cut off in the middle and connected to an adapter, which is used to connect to a solenoid valve.