Pressure device for stabilizing negative pressure
By introducing a voltage stabilization tube, air filter and negative pressure adjustment structure into the negative pressure generator, the problems of dust damage and negative pressure instability are solved, and the stability and service life of the negative pressure are improved.
Patent Information
- Application Number
- CN202421906172.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-07
- Publication Date
- 2025-07-22
- Estimated Expiration
- 2034-08-07
AI Technical Summary
Existing negative pressure generators are prone to damage due to dust and impurities, and lack of a negative pressure stabilization adjustment device, resulting in negative pressure unstable.
A stable negative pressure pressure device including a pressure stabilization tube, an air filter, a pressure gauge and a negative pressure adjustment structure is designed to filter dust through an air filter, and the negative pressure is adjusted using the pressure regulating cylinder and valve core structure to ensure the stability of the negative pressure.
Effectively prevent dust from entering the negative pressure generator, improve its service life, and ensure the stability of the negative pressure through the negative pressure adjustment structure, enhancing the use value.
Smart Images
Figure CN223136500U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of negative pressure generators, in particular to a stable negative pressure device. Background Art
[0002] A negative pressure generator is a device used to generate negative pressure, which is widely used in various industries. The existing negative pressure generators have the following defects during use:
[0003] First, the negative pressure generator generally sucks air directly through the intake pipe, and dust or other impurities in the air will enter the negative pressure generator. Long-term use is likely to cause damage to the negative pressure generator.
[0004] Second, the negative pressure generator lacks a negative pressure stabilizing device and cannot adjust the negative pressure during operation, resulting in unstable negative pressure and unable to meet the actual use requirements.
[0005] To solve the above problems, this application discloses a stable negative pressure device. Content of the Utility Model
[0006] To overcome the deficiencies of the prior art, the utility model discloses a stable negative pressure device.
[0007] To achieve the above object, the technical solution adopted by the utility model is: a stable negative pressure device, including a voltage stabilizing tube, an air filter, a pressure gauge, and a negative pressure adjustment structure;
[0008] An intake part is integrally arranged on the periphery of the voltage stabilizing tube;
[0009] The exhaust end of the air filter is connected to the intake part of the voltage stabilizing tube;
[0010] The negative pressure adjustment structure includes a pressure regulating cylinder, a valve core, and a spring. The pressure regulating cylinder is sleeved on the top of the voltage stabilizing tube in a liftable and adjustable manner. The pressure regulating cylinder is provided with a sealing part in its axial direction, and an intake through hole is opened on the sealing part. The valve core is arranged in the pressure regulating cylinder below the sealing part, and the spring extends below the valve core into the voltage stabilizing tube and abuts against its side wall;
[0011] The pressure gauge is connected and arranged on the periphery of the voltage stabilizing tube.
[0012] Further preferably, a one-way valve is further included. The exhaust end of the air filter is connected with a first inner insertion tube, and two through parts of the one-way valve are respectively inserted on the first inner insertion tube and the intake part of the voltage stabilizing tube.
[0013] Further preferably, an intake pipe is further included. The intake end of the air filter is connected with a second inner insertion tube, and the intake pipe and the second inner insertion tube are connected through a pipe sleeve.
[0014] Further preferably, the pressure regulating cylinder and the pressure stabilizing tube are connected by a threaded structure.
[0015] Further preferably, the number of air inlet through holes on the sealing part is three, and the three air inlet through holes are arranged in an annular array with the center of the sealing part as the center.
[0016] Further preferably, the valve core is a T-shaped valve core, an annular groove is formed in the outer circle of the transverse part of the T-shaped valve core, and a rubber sealing ring is embedded in the annular groove.
[0017] Further preferably, a guiding column is integrally arranged above the transverse part of the T-shaped valve core, a guiding hole is formed in the sealing part, and the guiding column is vertically and movably arranged in the guiding hole.
[0018] Further preferably, an annular step is formed above the interior of the pressure stabilizing tube, and the spring is clamped between the vertical part of the T-shaped valve core and the annular step.
[0019] Further preferably, an annular blind groove concentric with the rubber sealing ring is formed at the bottom of the sealing part, the inner diameter of the annular blind groove is smaller than the inner diameter of the rubber sealing ring, and the air inlet through hole extends through the annular blind groove.
[0020] Further preferably, the pressure gauge is installed on the peripheral side of the pressure stabilizing tube below the annular step.
[0021] The present utility model achieves the following beneficial effects:
[0022] 1. By installing the stable negative pressure device of the present application on the negative pressure generator, air can be filtered, and dust in the air will not enter the negative pressure generator, thereby increasing the service life of the negative pressure generator.
[0023] 2. The present application can adjust the negative pressure by setting a negative pressure adjustment structure, ensuring that the generated negative pressure has strong stability and has strong application value compared with the prior art.
[0024] As for other features and advantages of the present utility model, they will be described in the subsequent specification, and will be partially obvious from the specification, or can be understood by implementing the present utility model. The objectives and other advantages of the present utility model can be achieved and obtained through the structures pointed out in the specification and the drawings. BRIEF DESCRIPTION OF THE DRAWINGS
[0025] The accompanying drawings here are incorporated into the specification and form a part of the specification, showing embodiments in line with the disclosure of the present utility model, and are used together with the specification to explain the principles of the present disclosure.
[0026] Figure 1Schematic diagram of the overall three-dimensional structure disclosed by the present utility model;
[0027] Figure 2 Schematic diagram of the cross-sectional structure disclosed by the present utility model;
[0028] Figure 3 Schematic diagram of the distribution of the intake through-holes disclosed by the present utility model;
[0029] In the figure: 10, voltage stabilizing tube; 11, intake part; 12, annular step; 20, air filter; 30, pressure gauge; 40, negative pressure adjustment structure; 41, pressure regulating cylinder; 411, sealing part; 4111, guiding hole; 4112, intake through-hole; 4113, annular blind groove; 42, valve core; 421, annular groove; 422, guiding column; 43, spring; 44, rubber sealing ring; 50, one-way valve; 60, first inner inserting tube; 70, intake pipe; 80, second inner inserting tube; 90, pipe sleeve. Specific implementation mode
[0030] Next, the technical solutions in the embodiments of the present utility model will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments.
[0031] In the description of the present utility model, it should be understood that the terms "opening", "upper", "lower", "thickness", "top", "middle", "length", "inner", "periphery", etc. indicating orientation or positional relationship are only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the components or elements referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be construed as a limitation to the present utility model.
[0032] Embodiment
[0033] In order to solve the problems in the prior art that the negative pressure generator is easily damaged due to the entry of dust or other impurities and the negative pressure cannot be stably adjusted during its operation, refer to Figures 1-3 As shown, the present application discloses a stable negative pressure device, including a voltage stabilizing tube 10, an air filter 20, a pressure gauge 30 and a negative pressure adjustment structure 40;
[0034] An intake part 11 is integrally arranged on the periphery of the voltage stabilizing tube 10;
[0035] The exhaust end of the air filter 20 is connected to the intake part 11 of the voltage stabilizing tube 10;
[0036] The negative pressure adjustment structure 40 includes a pressure regulating cylinder 41, a valve core 42, and a spring 43. The pressure regulating cylinder 41 is sleeved on the top of the voltage stabilizing tube 10 in a vertically adjustable manner. The pressure regulating cylinder 41 is provided with a sealing portion 411 in its axial direction, and an air inlet through hole 4112 is formed in the sealing portion 411. The valve core 42 is arranged in the pressure regulating cylinder 41 below the sealing portion 411. The spring 43 extends below the valve core 42 into the voltage stabilizing tube 10 and abuts against its side wall;
[0037] The pressure gauge 30 is connected and arranged on the peripheral side of the voltage stabilizing tube 10;
[0038] In the specific implementation process, the operator first connects the bottom of the voltage stabilizing tube 10 to a negative pressure generator (not shown in this application), and then controls the lifting of the pressure regulating cylinder 41 to compress the spring 43 to provide a certain spring force of the spring 43 to ensure the maximum negative pressure value. After the negative pressure generator starts to operate to generate negative pressure, the external air is filtered by the air filter 20 and then enters the voltage stabilizing tube 10. The pressure gauge 30 will display a certain negative pressure value. When the negative pressure is too high, the valve core 42 will be pushed downward by the atmospheric pressure difference and separated from the sealing portion 411. At this time, the external air flow will smoothly enter the negative pressure generator through the air inlet through hole 4112, making the negative pressure stable.
[0039] Reference Figure 1 and Figure 2 As shown in the figure, in addition to the above structure, this application further includes a one-way valve 50. The exhaust end of the air filter 20 is connected with a first inner insertion tube 60. Two through parts of the one-way valve 50 are respectively inserted into the first inner insertion tube 60 and the air inlet part 11 of the voltage stabilizing tube 10. When the negative pressure generator is operating, the air filtered by the air filter 20 will flow through the one-way valve 50 into the voltage stabilizing tube 10. The purpose of passing through the one-way valve is to prevent the gas in the voltage stabilizing tube 10 from flowing back to the air filter 20.
[0040] Reference Figure 2 As shown in the figure, this application further includes an air inlet pipe 70. The air inlet end of the air filter is connected with a second inner insertion tube 80. The air inlet pipe 70 and the second inner insertion tube 80 are connected through a pipe sleeve 90. In the specific implementation, the external air will enter the air filter 20 through the air inlet pipe 70.
[0041] In one implementation, this application connects the pressure regulating cylinder 41 and the voltage stabilizing tube 10 through a threaded structure (not shown in this application). With the cooperation of the threaded structure, the operator can make it move up and down in the voltage stabilizing tube 10 by screwing the pressure regulating valve, so as to adjust the compression amount of the spring 43 to ensure the maximum negative pressure value.
[0042] Reference Figure 3As shown, in order to enable external gas to quickly enter the voltage stabilizing tube 10 to stabilize the negative pressure, the number of air intake through holes 4112 provided on the sealing portion 411 in this application is three, and the three air intake through holes 4112 are arranged in a circular array centered on the center of the sealing portion 411. In this way, under the action of the atmospheric pressure difference, the three air intake through holes 4112 will intake air simultaneously and push the valve core 42 downward to move away from the sealing portion 411 and then enter the voltage stabilizing tube 10.
[0043] Reference Figure 2 As shown, in a preferred embodiment, the valve core 42 of this application is set as a T-shaped valve core. An annular groove 421 is opened on the outer circle of the transverse portion of the T-shaped valve core, and a rubber sealing ring 44 is embedded in the annular circle. When the negative pressure is in a stable state, the rubber sealing ring 44 will abut against the sealing portion 411, which can ensure the sealing performance inside the voltage stabilizing tube 10 and prevent the gas inside the voltage stabilizing tube 10 from leaking outwards.
[0044] In addition, a guide post 422 is integrally provided above the transverse portion of the T-shaped valve core in this application. A guide hole 4111 is opened on the sealing portion 411, and the guide post 422 is telescopically arranged in the guide hole 4111. When there is an atmospheric pressure difference, the external air pushes the valve core 42 to move downward, and the guide post 422 can move downward in the guide hole 4111, having strong stability.
[0045] Reference Figure 2 As shown, in one of the implementation schemes, an annular step 12 is opened above the inside of the voltage stabilizing tube 10 in this application, and the spring 43 is clamped between the vertical portion of the T-shaped valve core and the annular step 12. In this way, the spring 43 will be restricted between the valve core 42 and the annular step 12, and a certain spring 43 force can be provided under the action of the pressure regulating cylinder 41 to ensure the maximum negative pressure.
[0046] Reference Figure 2 As shown, in a preferred embodiment, an annular blind groove concentric with the rubber sealing ring 44 is opened at the bottom of the sealing portion 411 in this application, and the inner diameter of the annular blind groove is smaller than the inner diameter of the rubber sealing ring 44. When there is an atmospheric pressure difference, the three air intake through holes 4112 intake air simultaneously, so that a greater force can be obtained to push the valve core 42 to move downward.
[0047] Reference Figure 2 As shown, the pressure gauge 30 of this application is installed on the peripheral side of the voltage stabilizing tube 10 below the annular step 12, and a better detection position can be obtained.
[0048] In the description of this specification, the descriptions referring to terms such as "one embodiment", "example", "specific example", etc. mean that the specific features, structures, materials or characteristics described in connection with the embodiment or example are included in at least one embodiment or example of the present utility model. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in a suitable manner in any one or more embodiments or examples.
[0049] The above embodiments are only for illustrating the technical concept and features of the present utility model, and the purpose is to enable those skilled in the art to understand the content of the present utility model and implement it accordingly. It is not intended to limit the protection scope of the present utility model. Any equivalent transformation or modification made according to the spirit of the present utility model should be covered within the protection scope of the present utility model.
Claims
1. A stable negative pressure device, characterized in that, It includes a voltage stabilizing tube, an air filter, a pressure gauge and a negative pressure adjustment structure; An air inlet part is integrally arranged on the periphery of the voltage stabilizing tube; The exhaust end of the air filter is connected to the air inlet part of the voltage stabilizing tube; The negative pressure adjustment structure includes a pressure regulating cylinder, a valve core and a spring. The pressure regulating cylinder is sleeved on the top of the voltage stabilizing tube in a liftable and adjustable manner. The pressure regulating cylinder is provided with a sealing part in its axial direction. An air inlet through hole is opened on the sealing part. The valve core is arranged in the pressure regulating cylinder below the sealing part. The spring extends below the valve core into the voltage stabilizing tube and abuts against its side wall; The pressure gauge is connected and arranged on the periphery of the voltage stabilizing tube.
2. The stable negative pressure device according to claim 1, wherein, It further includes a check valve. The exhaust end of the air filter is connected with a first inner insertion tube. Two through parts of the check valve are respectively inserted on the first inner insertion tube and the air inlet part of the voltage stabilizing tube.
3. A stable negative pressure device according to claim 1, characterized in that, It further includes an air inlet pipe. The air inlet end of the air filter is connected with a second inner insertion tube. The air inlet pipe and the second inner insertion tube are connected through a pipe sleeve.
4. A stable negative pressure device according to claim 1, characterized in that, The pressure regulating cylinder and the voltage stabilizing tube are connected and matched through a thread structure.
5. A stable negative pressure device according to claim 1, characterized in that, The number of air inlet through holes on the sealing part is three, and the three air inlet through holes are arranged in an annular array with the center of the sealing part as the center.
6. The stable negative pressure device according to claim 1, characterized in that, The valve core is a T-shaped valve core. An annular groove is opened on the outer circle of the transverse part of the T-shaped valve core, and a rubber sealing ring is embedded in the annular groove.
7. A stable negative pressure device according to claim 6, characterized in that, A guide post is integrally arranged above the transverse part of the T-shaped valve core. A guide hole is opened on the sealing part. The guide post is liftably arranged in the guide hole.
8. A stable negative pressure device according to claim 6, wherein, An annular step is opened above the inside of the voltage stabilizing tube. The spring is clamped between the vertical part of the T-shaped valve core and the annular step.
9. The stable negative pressure device according to claim 6, characterized in that, An annular blind groove concentric with the rubber sealing ring is opened at the bottom of the sealing part. The inner diameter of the annular blind groove is smaller than the inner diameter of the rubber sealing ring, and the air inlet through hole extends through the annular blind groove.
10. A stable negative pressure device according to claim 8, wherein, The pressure gauge is installed on the periphery of the voltage stabilizing tube below the annular step.