Pressure adjusting device for overflow valve of diaphragm compressor
By introducing a combination of a check valve, a three-way connector, a pressure gauge, and a needle valve B into the diaphragm compressor, the overflow pressure can be monitored and adjusted in real time, solving the problem of membrane head pressure deviation caused by inaccurate overflow valve pressure and improving the reliability and performance of the equipment.
Patent Information
- Application Number
- CN202520165830.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-23
- Publication Date
- 2026-01-02
- Estimated Expiration
- 2035-01-23
AI Technical Summary
After a period of use, the overflow valve in the existing diaphragm compressor will have inaccurate overflow pressure, resulting in excessively high or low pressure inside the membrane head, which will affect the equipment's lifespan and efficiency.
The regulating device consists of a one-way valve, a three-way connector, a pressure gauge, and a needle valve B. The pressure gauge displays the pressure after the regulating handle is adjusted in real time, and the overflow pressure of the overflow valve is precisely adjusted to ensure that the internal pressure of the membrane head meets the standard.
It enables precise adjustment of the overflow valve, ensuring that the internal pressure of the diaphragm head is within the standard range, thereby improving the service life and efficiency of the equipment.
Smart Images
Figure CN223754222U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of diaphragm compressor, especially to a diaphragm compressor overflow valve pressure regulating device. BACKGROUND
[0002] At present, in the diaphragm compressor, the membrane head will be installed overflow valve, when the membrane head oil pressure is too large, through the overflow valve to discharge part of the hydraulic oil, to carry out overpressure protection to the membrane head inside, the discharged hydraulic oil will be backflow to the diaphragm compressor through pipeline and recycle. In the actual working process, the overflow valve now, after using for a period of time, overflow pressure inaccuracy will appear, cannot accurately overflow according to the set pressure, thereby leading to the pressure in the membrane head is too high or too low, the pressure is too high will affect the service life of the membrane head internal parts, the pressure is too low will affect the compression efficiency in the membrane head, there is no good solution to the above problems at present.
[0003] In summary, the above problems of the overflow valve in the diaphragm compressor have become a technical problem that needs to be solved in the industry. UTILITY MODEL CONTENTS
[0004] The utility model discloses in order to make up for the insufficient of prior art, provide a kind of diaphragm compressor overflow valve pressure regulating device, solve the problem that the pressure in the membrane head is too high or too low caused by the overflow valve inaccuracy of previous overflow.
[0005] The utility model discloses a technical scheme to solve the above technical problems is as follows:
[0006] A kind of diaphragm compressor overflow valve pressure regulating device, including membrane head, overflow port on membrane head is connected with the first interface of four-way joint through pipeline, the second interface of four-way joint is connected with overflow valve through pipeline, the third interface of four-way joint is connected with needle valve A through pipeline, the pipeline of overflow valve and needle valve A is connected with backflow pipeline again, the other end of backflow pipeline is connected diaphragm compressor, the fourth interface of four-way joint is connected with one-way valve through pipeline, the other end of one-way valve is connected with the first interface of three-way joint, the second interface of three-way joint is connected with pressure gauge through pipeline, the third interface of three-way joint is connected with needle valve B through pipeline.
[0007] The one-way valve, three-way joint, pressure gauge, needle valve B and pipeline are connected by CT thread.
[0008] The pressure gauge adopts shockproof pressure gauge.
[0009] The pressure resistance of the one-way valve, three-way joint, pressure gauge, needle valve B and pipeline is not less than 20000PSI.
[0010] The utility model has the following advantages by using the above scheme:
[0011] By setting the one-way valve, tee joint, pressure gauge and needle valve B, when the diaphragm compressor is running, the overflow valve handle is counterclockwise completely out, and the needle valve A is closed, the pressure inside the membrane head can be continuously changed by adjusting the overflow valve handle, and the pressure gauge can display the pressure adjusted by the handle in real time, and the pressure of the hydraulic oil inside the membrane head can be calibrated according to the pressure displayed by the pressure gauge, and the specific position of the handle is finally determined and fixed by the locking nut, so that the overflow pressure of the overflow valve is accurately adjusted, and the pressure inside the membrane head meets the standard requirements. BRIEF DESCRIPTION OF DRAWINGS
[0012] Fig. 1 It is a structure schematic view of the utility model.
[0013] Fig. 2 It is a structure schematic view of the utility model.
[0014] Fig. 3 It is a principle schematic view of the utility model.
[0015] In the figure, 1, membrane head, 2, four-way joint, 3, overflow valve, 4, needle valve A, 5, return line, 6, diaphragm compressor, 7, one-way valve, 8, tee joint, 9, pressure gauge, 10, needle valve B, 11, gear pump, 12, cooler, 13, filter, 14, oil supplement pump. DETAILED DESCRIPTION
[0016] In order to clearly illustrate the technical features of the scheme, the utility model will be described in detail below through specific implementation mode, and combined with its drawings.
[0017] As shown in Figs. 1-3 A diaphragm compressor overflow valve pressure regulating device, comprising a membrane head 1, the overflow port on the membrane head 1 is connected with the first interface of a four-way joint 2 through a pipeline, the second interface of the four-way joint 2 is connected with an overflow valve 3 through a pipeline, the third interface of the four-way joint 2 is connected with a needle valve A 4 through a pipeline, the needle valve A 4 is used to empty the air in the pipeline at the initial work, the pipeline of the overflow valve 3 and the needle valve A 4 is connected with a return line 5, the other end of the return line 5 is connected with a diaphragm compressor 6, the fourth interface of the four-way joint 2 is connected with a one-way valve 7 through a pipeline, the other end of the one-way valve 7 is connected with the first interface of a tee joint 8, the second interface of the tee joint 8 is connected with a pressure gauge 9 through a pipeline, and the third interface of the tee joint 8 is connected with a needle valve B 10 through a pipeline.
[0018] The one-way valve 7, tee joint 8, pressure gauge 9 and needle valve B 10 are connected with the pipeline through CT thread.
[0019] The pressure gauge 9 adopts a shockproof pressure gauge.
[0020] The pressure resistance of the one-way valve 7, the three-way joint 8, the pressure gauge 9, and the needle valve B 10 and the pipeline is not less than 20000 PSI.
[0021] Working principle:
[0022] In the normal state, the fourth interface of the four-way joint 2 is closed by a plug. When the overflow pressure of the overflow valve 3 needs to be adjusted, first, when the diaphragm compressor 6 is running, the adjusting handle of the overflow valve 3 is completely rotated counterclockwise, the needle valve A 4 is closed, the needle valve B 10 is opened, and after the needle valve B 10 pipeline no longer has gas overflow, the needle valve B 10 is closed. The adjusting handle of the overflow valve 3 can continuously change the pressure in the membrane head 1. The pressure gauge 9 can display the pressure adjusted by the adjusting handle in real time. According to the pressure displayed by the pressure gauge 9, the pressure of the hydraulic oil in the membrane head 1 can be calibrated, and the specific position of the adjusting handle is finally determined and fixed by the locking nut. After the pressure calibration is completed, the diaphragm compressor 6 is stopped, and the fourth interface of the four-way joint 2 is connected to each part, and then the plug is used to close the fourth interface of the four-way joint 2. The whole adjustment work is completed, the overflow pressure of the overflow valve 3 is precisely adjusted, and the internal pressure of the membrane head 1 meets the standard requirements. The hydraulic oil overflowed from the overflow valve 3 enters the diaphragm compressor 6 through the return pipeline 5, the hydraulic oil stored in the diaphragm compressor 6 is pumped into the cooler 12 through the gear pump 11 for cooling, and then one branch is filtered through the filter 13 and then pumped into the membrane head 1 through the oil supplementing pump 14, and the other branch returns to the diaphragm compressor 6 for lubrication.
[0023] The above specific embodiments cannot be regarded as a limitation on the protection scope of the utility model, and any alternative improvement or change made by the person skilled in the art to the embodiments of the utility model falls within the protection scope of the utility model.
[0024] The parts not described in the utility model are the known technology of the person skilled in the art.
Claims
1. A diaphragm compressor relief valve pressure regulating device characterized by: The membrane head, the overflow port on the membrane head, the first interface of the four-way joint, the pipeline, the overflow valve, the third interface of the four-way joint, the pipeline, needle valve A, the pipeline connection between the overflow valve and needle valve A, the return pipeline, the other end of the return pipeline connected to the diaphragm compressor, the fourth interface of the four-way joint, the pipeline, the one-way valve, the first interface of the three-way joint connected to the other end of the one-way valve, the pipeline, the pressure gauge, the second interface of the three-way joint connected to the pressure gauge, the pipeline, and needle valve B connected to the third interface of the three-way joint.
2. A diaphragm compressor relief valve pressure regulating device according to claim 1, characterized in that: The one-way valve, the three-way joint, the pressure gauge, needle valve B, and the pipeline are connected through CT threads.
3. A diaphragm compressor relief valve pressure regulating device according to claim 1, characterized in that: The pressure gauge is a shock-resistant pressure gauge.
4. A diaphragm compressor relief valve pressure regulating device according to claim 1, characterized in that: The pressure resistance of the one-way valve, the three-way joint, the pressure gauge, needle valve B, and the pipeline is not less than 20,000 PSI.