A damper

Abstract

The application discloses a damper, which comprises a first shell and a second shell, a first elastic member is arranged in the first shell, a gas control joint is arranged on the top of the first shell, and the gas control joint is connected with an external gas source; the second shell is arranged in a covering mode with the first shell, a volume cavity is arranged in the second shell, a diaphragm is arranged between the volume cavity and the gas control joint, the diaphragm abuts against the first elastic member, the diaphragm moves up and down through the pressure difference between the two sides thereof, the volume of the volume cavity is changed to maintain the pressure balance between the two sides of the diaphragm; when the pressure in the volume cavity is located in a preset range value, the diaphragm pushes the first elastic member to rise, so that the increased liquid is stored in the volume cavity, thereby maintaining the pressure balance of the volume cavity; when the pressure in the volume cavity is greater than the preset range value, the external gas source applies a force to the diaphragm through the gas control joint, so as to maintain the pressure balance between the two sides of the diaphragm. The application can eliminate the liquid pulsation of the liquid injection pipeline caused by the working principle and structure of the liquid injection pump itself.

Description

Technical Field

[0001] This application relates to the field of liquid injection pump coating technology, and in particular to a damper. Background Technology

[0002] In the coating process, the injection pump, as a key fluid delivery device, directly affects the uniformity of the coating quality due to its operational stability. However, due to the limitations of the injection pump's working principle and structural characteristics, fluid pulsation is prone to occur in the outlet pipeline, leading to fluctuations in coating thickness during the coating process and consequently, substandard product quality.

[0003] To mitigate the adverse effects of pressure pulsation, pulsation elimination devices have been widely adopted. However, existing pulsation elimination devices generally suffer from complex structures and large overall size, making it difficult to achieve a compact connection with the liquid injection pump outlet. Furthermore, the pulsation suppression effect of existing equipment is still not ideal, failing to meet the high-precision and high-stability requirements of modern production, thus hindering improvements in production efficiency and product quality assurance. Utility Model Content

[0004] This application aims to at least solve one of the aforementioned technical problems existing in the prior art. Therefore, the purpose of this application is to provide a damper that can be directly connected to the outlet end of the injection pump, eliminating liquid pulsation in the injection pipeline caused by the working principle and structure of the injection pump itself, achieving a constant liquid flow state, meeting the pressure stability and constant liquid flow requirements of the coating process, and thus improving production efficiency and ensuring product quality.

[0005] The damper according to an embodiment of this application includes: A first housing, a first elastic element is provided inside the first housing, and a pneumatic control connector is provided on the top of the first housing, the pneumatic control connector being connected to an external air source; The second housing is provided to cover the first housing. The second housing has a volume cavity. A diaphragm is provided between the volume cavity and the pneumatic connector. The diaphragm abuts against the first elastic element. The diaphragm moves up and down by the pressure difference on both sides to change the volume of the volume cavity and maintain the pressure balance on both sides of the diaphragm. When the pressure inside the volume chamber is within a preset range, the diaphragm pushes the first elastic element upward to store the increased liquid inside the volume chamber; when the pressure inside the volume chamber is greater than the preset range, the external air source applies force to the diaphragm through the air control connector.

[0006] The damper according to the embodiments of this application has at least the following beneficial effects: the damper of this application has a simple overall structure and small size, and can be directly connected to the liquid outlet of the injection pump, solving the problem that the existing pulsation elimination device has a complex structure and a large overall size, making it difficult to achieve a compact connection. Simultaneously, through the coordinated action of the first elastic element in the first housing, the diaphragm in the second housing, and the pneumatic control connector, the diaphragm moves up and down due to the pressure difference on both sides, changing the volume of the volume chamber to maintain pressure balance on both sides. When the pressure in the volume chamber is within a preset range, the diaphragm pushes the first elastic element upward to store the increased liquid in the volume chamber, thereby maintaining pressure stability in the volume chamber. When the pressure in the volume chamber is greater than the preset range, an external air source applies force to the diaphragm through the pneumatic control connector to maintain pressure balance on both sides of the diaphragm. This can eliminate liquid pulsation in the injection pipeline caused by the working principle and structure of the injection pump itself, achieving a constant liquid flow state. This meets the pressure stability and constant liquid flow requirements of the coating process. It can eliminate different pressure pulsations at the injection pump outlet and also eliminate pressure pulsations in some pipelines, thus making the pulsation suppression effect more ideal, meeting the requirements of high precision and high stability in modern production, and helping to improve production efficiency and ensure product quality.

[0007] According to some embodiments of this application, the damper further includes a first mounting member, the diaphragm is provided with a mounting groove, at least a portion of the first mounting member is disposed in the mounting groove, the top of the first mounting member protrudes from the diaphragm to form a first mounting portion, and the first elastic member is sleeved on the outside of the first mounting portion.

[0008] According to some embodiments of this application, the damper further includes a second mounting member and a second elastic member, wherein the second mounting member is provided with a mounting hole, and the first mounting portion is disposed within the mounting hole; Along the height direction of the damper, the second mounting member is provided with a second mounting part and a third mounting part in sequence. The second elastic member is sleeved on the outside of the second mounting part and can abut against the first housing. The first elastic member is sleeved on the outside of the first mounting part and the end of the first elastic member away from the diaphragm abuts against the first housing.

[0009] According to some embodiments of this application, the first housing is provided with a fourth mounting portion, and the end of the first elastic member away from the diaphragm is sleeved on the outside of the fourth mounting portion.

[0010] According to some embodiments of this application, the pneumatic connector is provided with an air intake channel, and the mounting hole is located directly below the air intake channel along the height direction of the damper.

[0011] According to some embodiments of this application, the pneumatic connector is provided with a connecting portion, the first housing is provided with a connecting hole, and the connecting portion is disposed in the connecting hole.

[0012] According to some embodiments of this application, the first housing is provided with a first annular groove, the second housing is provided with a second annular groove, the first annular groove and the second annular groove form a mounting position, and the edge of the diaphragm is disposed within the mounting position.

[0013] According to some embodiments of this application, the second housing is provided with an inlet connector and an outlet connector on opposite sides, the inlet connector is provided with an inlet channel, the outlet connector is provided with an outlet channel, and both the inlet channel and the outlet channel are connected to the volume cavity.

[0014] According to some embodiments of this application, the second housing is provided with a buffer plate, and the liquid outlet direction of the liquid inlet channel is toward the buffer plate.

[0015] According to some embodiments of this application, the buffer plate is provided with an arc-shaped surface, and the second housing is provided with two guide plates. The two guide plates are symmetrically arranged on both sides of the liquid inlet channel, and a guide port is formed between the two guide plates, with the guide port facing the arc-shaped surface.

[0016] Additional aspects and advantages of this application will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of this application. Attached Figure Description

[0017] The present application will be further described below with reference to the accompanying drawings and embodiments, wherein: Figure 1 This is a schematic diagram of the damper structure according to an embodiment of this application; Figure 2 This is a cross-sectional view of the damper according to an embodiment of this application; Figure 3 for Figure 2 Enlarged view of section A; Figure 4 This is an exploded view of the damper in an embodiment of this application; Figure 5 for Figure 4 The diagram shows the structure of the first housing of the damper. Figure 6 for Figure 4 An exploded view of the first housing of the damper shown; Figure 7 for Figure 4 The diagram shows the structure of the second housing of the damper. Figure 8 for Figure 4 The diagram shows a cross-sectional view of the second housing of the damper.

[0018] Reference numerals: 100, first housing; 110, pneumatic connector; 111, air intake passage; 112, connecting part; 120, fourth mounting part; 130, connecting hole; 140, first annular groove; 200, Second shell; 210, Volumetric cavity; 220, Second annular groove; 230, Buffer plate; 231, Arc-shaped surface; 240, Guide plate; 300. First elastic element; 400, Diaphragm; 410, Mounting groove; 420, Rubber layer; 500. First mounting component; 510. First mounting section; 600. Second mounting component; 610. Mounting hole; 620. Second mounting part; 630. Third mounting part; 700. Second elastic element; 800. Liquid inlet connector; 810. Liquid inlet channel; 900, liquid outlet connector; 910, liquid outlet channel. Detailed Implementation

[0019] The embodiments of this application are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this application, and should not be construed as limiting this application.

[0020] In the description of this application, it should be understood that the orientation descriptions, such as up, down, front, back, left, right, etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0021] In the description of this application, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. The use of "first" and "second" in the description is merely for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the order of the indicated technical features.

[0022] In the description of this application, unless otherwise expressly defined, terms such as "setup," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this application in conjunction with the specific content of the technical solution.

[0023] In the description of this application, the terms "one embodiment," "some embodiments," "illustrative embodiment," "example," "specific example," or "some examples," etc., refer to specific features, structures, materials, or characteristics described in connection with that embodiment or example, which are included in at least one embodiment or example of this application. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0024] Reference Figure 1 , Figure 2 This application provides a damper, including a first housing 100 and a second housing 200. A first elastic element 300 is disposed inside the first housing 100, and an air control connector 110 is disposed on the top of the first housing 100, which is connected to an external air source. The second housing 200 is disposed to cover the first housing 100, and a volume cavity 210 is disposed inside the second housing 200. A diaphragm 400 is disposed between the volume cavity 210 and the air control connector 110. The diaphragm 400 abuts against the first elastic element 300. The diaphragm 400 moves up and down by the pressure difference on both sides of its sides to change the volume of the volume cavity 210 to maintain the pressure balance on both sides of the diaphragm 400. When the pressure inside the volume chamber 210 is within a preset range, the diaphragm 400 pushes the first elastic element 300 upward to store the increased liquid inside the volume chamber 210, thereby maintaining the pressure balance of the volume chamber 210; when the pressure inside the volume chamber 210 is greater than the preset range, an external air source applies a force to the diaphragm 400 through the air control connector 110 to maintain the pressure balance on both sides of the diaphragm 400.

[0025] Specifically, when the liquid enters the damper through the injection pump, it exhibits certain pressure pulsations. The pressure increases and decreases with these pulsations. When the internal pressure of the damper rises, it indicates that more liquid is entering the damper per unit time; when the pressure decreases, it indicates that less liquid is entering the damper per unit time. When the internal pressure of the damper begins to rise, the diaphragm 400 is compressed by the first elastic element 300, causing the diaphragm 400 to move upward and increasing the volume of the volume chamber 210, storing the increased liquid in the damper. When the pressure decreases, the diaphragm 400 begins to move downward under the force of the first elastic element 300, decreasing the volume of the volume chamber 210 and outputting the liquid stored in the damper. This ensures a stable injection state of the liquid pressure through the outlet connector 900, achieving constant flow and eliminating pulsations. When the pressure rises to a certain value, the internal pressure of the damper exceeds the bearing capacity of the first elastic element 300. Then, an air source consistent with the internal hydraulic pressure of the damper can be connected at the air control joint 110 of the first housing 100 to start eliminating the pulsation of the liquid by air pressure, thereby eliminating the pressure pulsation at the pump outlet.

[0026] It should be noted that the application of force to the diaphragm 400 by an external air source through the pneumatic control connector 110 is existing technology, and this application has not made any improvements to this part, so its principle and process will not be described in detail.

[0027] The damper of this application has a simple overall structure and small size, and can be directly connected to the liquid outlet of the injection pump, solving the problem that existing pulsation elimination devices have complex structures and large overall sizes, making it difficult to achieve a compact connection. At the same time, through the coordinated action of the first elastic element 300 in the first housing 100, the diaphragm 400 in the second housing 200, and the pneumatic control connector 110, the diaphragm 400 moves up and down by the pressure difference on both sides, thereby changing the volume of the volume chamber 210 to maintain the pressure balance on both sides of the diaphragm 400. When the pressure inside the volume chamber 210 is within a preset range, the diaphragm 400 pushes the first elastic element 300 upward to store the increased liquid inside the volume chamber 210, thereby maintaining the pressure balance in the volume chamber 210. When the pressure inside the volume chamber 210 is greater than the preset range, an external air source applies force to the diaphragm 400 through the air control connector 110 to maintain the pressure balance on both sides of the diaphragm 400. This can eliminate liquid pulsation in the injection pipeline caused by the working principle and structure of the injection pump itself, achieving a constant liquid flow state. This meets the requirements of pressure stability and constant liquid flow in the coating process. It can eliminate different pressure pulsations at the injection pump outlet and also eliminate some pressure pulsations in the pipeline, thus making the pulsation suppression effect more ideal. This meets the requirements of high precision and high stability in modern production, which is conducive to improving production efficiency and ensuring product quality.

[0028] Reference Figure 2 , Figure 3 , Figure 4 In some embodiments, the damper further includes a first mounting member 500. The diaphragm 400 is provided with a mounting groove 410. At least a portion of the first mounting member 500 is disposed within the mounting groove 410, providing support for the diaphragm 400 and preventing the diaphragm 400 from shifting or deforming when subjected to liquid pressure or the force of the first elastic member 300. This ensures the stability of the diaphragm 400's movement trajectory under force, and guarantees that it can accurately move upward to store liquid or downward to output liquid when pressure changes. Furthermore, the top of the first mounting member 500 protrudes from the diaphragm 400 to form a first mounting portion 510. The first elastic member 300 is fitted onto the outside of the first mounting portion 510, clearly defining the assembly position of the first elastic member 300 and preventing lateral shift or detachment of the first elastic member 300 during compression and rebound, ensuring that the first elastic member 300 can always apply a stable force to the diaphragm 400.

[0029] Reference Figure 2 , Figure 3 , Figure 4In some embodiments, the damper further includes a second mounting member 600 and a second elastic member 700. The second mounting member 600 is provided with a mounting hole 610, and a first mounting portion 510 is disposed within the mounting hole 610. The second mounting member 600, through the cooperation between the mounting hole 610 and the first mounting portion 510, ensures that the first elastic member 300 and the second elastic member 700 maintain the same trajectory during the force application process. In addition, along the height direction of the damper, the second mounting member 600 is sequentially provided with a second mounting portion 620 and a third mounting portion 630. The second elastic member 700 is sleeved outside the second mounting portion 620 and can abut against the first housing 100. The first elastic member 300 is sleeved outside the first mounting portion 510, and the end of the first elastic member 300 away from the diaphragm 400 abuts against the first housing 100. The segmented structure of the second mounting part 620 and the third mounting part 630 clarifies the assembly position of the second elastic member 700, so that the second elastic member 700 abuts against the first housing 100. Combined with the abutting relationship between the end of the first elastic member 300 away from the diaphragm 400 and the first housing 100, different pressure pulsations can be adjusted according to different pressure magnitudes.

[0030] Specifically, when the internal pressure of the damper is low, the first elastic element 300 is mainly used to eliminate liquid pulsation. When the pressure rises to a certain value, the second elastic element 700 works in conjunction with the first elastic element 300 to eliminate liquid pulsation. If the internal pressure of the damper exceeds the bearing capacity of the second elastic element 700, an air source with the same hydraulic pressure as the internal pressure of the damper is connected at the pneumatic control connector 110, and the air pressure of the air source eliminates liquid pulsation. The damper of this application can eliminate different pressure pulsations at the injection pump outlet in stages, ensuring the buffering sensitivity under low pressure conditions and enhancing the load-bearing capacity under high pressure conditions, thus broadening the pressure adaptation range of the damper and ensuring that the pulsation suppression effect remains stable and efficient under different operating conditions. At the same time, the damper of this application can eliminate different pressure pulsations at the injection pump outlet and also eliminate some pressure pulsations in pipelines, further improving the pressure stability and flow constancy during liquid transportation.

[0031] Reference Figure 2 , Figure 3 , Figure 5In some embodiments, the first housing 100 is provided with a fourth mounting portion 120, and the end of the first elastic member 300 away from the diaphragm 400 is sleeved on the outside of the fourth mounting portion 120, which can constrain the end of the first elastic member 300, prevent the first elastic member 300 from shifting laterally or falling off during compression or rebound, ensure that the first elastic member 300 always remains in the preset stress position, improve the connection stability between the first elastic member 300 and the first housing 100, ensure that the first elastic member 300 can cope with the pressure change of the damper and generate the corresponding elastic force, provide stable support and buffer feedback for the diaphragm 400, and help maintain the overall operational stability of the damper under different pressure conditions.

[0032] In some embodiments, the first elastic element 300 is a disc spring. The disc spring has a small axial dimension and sensitive elastic response, allowing it to deform rapidly when the internal pressure of the damper is low, absorbing small pressure pulsations and ensuring timely and sensitive buffering adjustment under low pressure conditions. Furthermore, the second elastic element 700 is a high-strength disc pad. Compared to the disc spring, the high-strength disc pad has higher load-bearing strength and stiffness. When the pressure rises to a certain value, the high-strength disc pad can cope with pressure fluctuations through its own stable deformation, providing the damper with stronger pressure-bearing performance. The combination of the first elastic element 300 and the second elastic element 700 adapts to a graded buffering mechanism. The first elastic element 300 and the second elastic element 700 can be structurally arranged compactly. Combined with the positioning function of the second mounting part 600, this ensures stable deformation trajectory under stress, meeting the buffering requirements of different pressure ranges, while reducing space occupation, contributing to the miniaturization and compactness of the overall structure of the damper. Of course, in actual design, the structure of the first elastic element 300 and the second elastic element 700 can be designed according to actual needs.

[0033] Reference Figure 3 , Figure 4 , Figure 5 In some embodiments, the pneumatic connector 110 is provided with an air inlet channel 111. Along the height direction of the damper, the mounting hole 610 is located directly below the air inlet channel 111, so that the air source passing through the air inlet channel 111 can apply a force to the first mounting member 500 through the mounting hole 610, and then apply a force to the diaphragm 400. This ensures that the force applied by the air source acts on the diaphragm 400 along the height direction of the damper, avoiding lateral forces that cause the diaphragm 400 to shift or experience uneven force, and keeping the movement trajectory of the diaphragm 400 under air pressure stable, thereby achieving buffering and regulation of liquid pulsation.

[0034] Reference Figure 2 , Figure 6In some embodiments, the pneumatic connector 110 is provided with a connecting portion 112, and the first housing 100 is provided with a connecting hole 130. The connecting portion 112 is disposed in the connecting hole 130 to ensure that the air inlet channel 111 of the pneumatic connector 110 can maintain a preset correspondence with the mounting hole 610 below, thereby enhancing the tightness of the connection between the pneumatic connector 110 and the first housing 100, preventing the air source from leaking from the connecting portion 112 during the delivery process, ensuring that the air pressure can stably act on the first mounting component 500 and the diaphragm 400, and ensuring that the pulsation of the injection pump can be eliminated under high pressure.

[0035] Reference Figure 4 , Figure 5 , Figure 7 In some embodiments, the first housing 100 is provided with a first annular groove 140, and the second housing 200 is provided with a second annular groove 220. The first annular groove 140 and the second annular groove 220 form a mounting position. The edge of the diaphragm 400 is disposed within the mounting position, so that the diaphragm 400 can be clamped by the first housing 100 and the second housing 200 together, restricting the displacement of the diaphragm 400 and preventing the edge of the diaphragm 400 from lifting or shifting when subjected to liquid pressure or gas source force, ensuring that the diaphragm 400 is always kept in the preset position. At the same time, the method of positioning the diaphragm 400 by the cooperation of the first annular groove 140 and the second annular groove 220 simplifies the assembly process of the diaphragm 400.

[0036] Reference Figure 7 , Figure 8 In some embodiments, the second housing 200 is provided with an inlet connector 800 and an outlet connector 900 on opposite sides. The inlet connector 800 is provided with an inlet channel 810, and the outlet connector 900 is provided with an outlet channel 910. Both the inlet channel 810 and the outlet channel 910 are connected to the volume chamber 210, allowing the liquid from the injection pump to smoothly enter the volume chamber 210 through the inlet connector 800. After pulsation elimination treatment, the liquid is then output through the outlet channel 910 and the outlet connector 900, forming a complete liquid flow loop. The oppositely arranged inlet connector 800 and outlet connector 900 make the liquid flow in the volume chamber 210 more stable, reducing additional pressure fluctuations caused by path bends.

[0037] In some embodiments, both the inlet connector 800 and the outlet connector 900 are connected to the second housing 200 by screws, achieving a detachable connection between the inlet connector 800 and the outlet connector 900 and the second housing 200. The screw connection, through the preload of the threads, ensures a tight fit between the inlet connector 800 and the outlet connector 900 and the second housing 200, preventing liquid leakage during transport and ensuring a stable pressure environment within the volume chamber 210. Simultaneously, the detachable connection facilitates the installation, removal, and replacement of the inlet connector 800 and the outlet connector 900. When the inlet connector 800 or the outlet connector 900 experiences wear, blockage, or requires adaptation to different pipe specifications, maintenance or replacement can be performed quickly, reducing equipment maintenance costs and downtime. Of course, in actual design, the connection method between the inlet connector 800 and the outlet connector 900 and the second housing 200 can be designed according to actual needs.

[0038] Reference Figure 7 , Figure 8 In some embodiments, the second housing 200 is provided with a buffer plate 230, and the liquid outlet direction of the liquid inlet channel 810 faces the buffer plate 230, which can buffer the liquid entering the volume chamber 210 from the liquid inlet channel 810. The liquid, after passing through the injection pump, carries pressure pulsations and directly impacts the buffer plate 230 after entering the liquid inlet channel 810. The buffer plate 230 can disperse the impact force of the liquid, reduce the turbulence and impact fluctuations when the liquid enters the volume chamber 210, and avoid the liquid directly impacting the diaphragm 400, which would cause uneven force on the diaphragm 400 or a sudden pressure rise. This allows the liquid to enter the volume chamber 210 more smoothly, reduces the additional pressure interference caused by the liquid impact, and ensures that the diaphragm 400 can move upward for storage or downward for output according to the pressure pulsations in the volume chamber 210. This ensures the constant flow state and stable pressure of the final liquid output, meeting the requirements of high-precision production for the smoothness of liquid delivery.

[0039] Reference Figure 7 , Figure 8In some embodiments, the buffer plate 230 is provided with an arc-shaped surface 231, and the second housing 200 is provided with two guide plates 240. The two guide plates 240 are symmetrically arranged on both sides of the liquid inlet channel 810, and a guide port is formed between the two guide plates 240. The guide port faces the arc-shaped surface 231 of the buffer plate 230, so that the liquid flowing out of the liquid inlet channel 810 can be constrained by the guide plates 240 and guided to the buffer plate 230 along the direction of the guide port. This prevents the liquid from spreading disorderly in all directions after flowing out of the liquid inlet channel 810, and ensures that the liquid impacts the arc-shaped surface 231 of the buffer plate 230 in a relatively concentrated flow direction. The arc-shaped surface 231 can disperse the liquid impact force. Combined with the guidance of the guide plates 240, it further enhances the guiding and regulating effect of the liquid inlet. Combined with the buffering effect of the buffer plate 230, it can more efficiently disperse the liquid impact force, slow down the liquid flow rate, and reduce the additional pressure fluctuations caused by the chaotic flow direction when the liquid enters. Meanwhile, the liquid after being guided and buffered can be more evenly distributed in the volume chamber 210, so that the pressure on the diaphragm 400 is more in line with the real state of the overall liquid pulsation, reducing the interference of local pressure changes on the response accuracy of the diaphragm 400, and further improving the effect and stability of pulsation elimination.

[0040] In some embodiments, the diaphragm 400 is configured as a Teflon film, and a rubber layer 420 is provided at the bottom of the diaphragm 400. The Teflon film contacts the liquid in the volume chamber 210 to prevent the liquid from corroding the rubber layer 420. The rubber layer 420 can enhance the strength of the diaphragm 400 so that it can withstand high pressure environment. It can deform and rebound under pressure pulsation, ensuring that the diaphragm 400 can reliably move upward to store liquid when the pressure rises and accurately move downward to output liquid when the pressure drops, so as to withstand high pressure environment.

[0041] In some embodiments, the first housing 100 and the second housing 200 are connected by screws, enabling a secure and tight assembly. The preload of the screws ensures a tight fit between the mating surfaces of the first housing 100 and the second housing 200, enhancing the seal and preventing leakage of liquid or gas from the volume chamber 210 through the mating surface, thus ensuring a stable internal pressure environment for the damper. Furthermore, the screw connection is detachable. When maintenance, replacement, or repair is required for components such as the diaphragm 400, the first elastic element 300, or the second elastic element 700 inside the damper, the first housing 100 and the second housing 200 can be quickly separated by removing the screws, simplifying the maintenance process and reducing the difficulty and cost of equipment maintenance.

[0042] The embodiments of this application have been described in detail above with reference to the accompanying drawings. However, this application is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this application. Furthermore, unless otherwise specified, the embodiments and features described in the embodiments of this application can be combined with each other.

Claims

1. A damper, characterized in that, include: A first housing, a first elastic element is provided inside the first housing, and a pneumatic control connector is provided on the top of the first housing, the pneumatic control connector being connected to an external air source; The second housing is provided to cover the first housing. The second housing has a volume cavity. A diaphragm is provided between the volume cavity and the pneumatic connector. The diaphragm abuts against the first elastic element. The diaphragm moves up and down by the pressure difference on both sides to change the volume of the volume cavity and maintain the pressure balance on both sides of the diaphragm. When the pressure inside the volume chamber is within a preset range, the diaphragm pushes the first elastic element upward to store the increased liquid inside the volume chamber; when the pressure inside the volume chamber is greater than the preset range, the external air source applies force to the diaphragm through the air control connector.

2. The damper according to claim 1, characterized in that, The damper further includes a first mounting member, the diaphragm is provided with a mounting groove, at least a portion of the first mounting member is disposed in the mounting groove, the top of the first mounting member protrudes from the diaphragm to form a first mounting portion, and the first elastic member is sleeved on the outside of the first mounting portion.

3. The damper according to claim 2, characterized in that, The damper further includes a second mounting member and a second elastic member, wherein the second mounting member is provided with a mounting hole and the first mounting part is disposed in the mounting hole; Along the height direction of the damper, the second mounting member is provided with a second mounting part and a third mounting part in sequence. The second elastic member is sleeved on the outside of the second mounting part and can abut against the first housing. The first elastic member is sleeved on the outside of the first mounting part and the end of the first elastic member away from the diaphragm abuts against the first housing.

4. The damper according to claim 3, characterized in that, The first housing is provided with a fourth mounting part, and the end of the first elastic member away from the diaphragm is sleeved on the outside of the fourth mounting part.

5. The damper according to claim 3, characterized in that, The pneumatic control connector is provided with an air intake channel, and the mounting hole is located directly below the air intake channel along the height direction of the damper.

6. The damper according to claim 1, characterized in that, The pneumatic connector is provided with a connecting part, the first housing is provided with a connecting hole, and the connecting part is disposed in the connecting hole.

7. The damper according to claim 1, characterized in that, The first housing is provided with a first annular groove, and the second housing is provided with a second annular groove. The first annular groove and the second annular groove form a mounting position, and the edge of the diaphragm is disposed within the mounting position.

8. The damper according to claim 1, characterized in that, The second housing has an inlet connector and an outlet connector on opposite sides. The inlet connector has an inlet channel and the outlet connector has an outlet channel. Both the inlet channel and the outlet channel are connected to the volume chamber.

9. The damper according to claim 8, characterized in that, The second housing is provided with a buffer plate, and the liquid outlet direction of the liquid inlet channel is towards the buffer plate.

10. The damper according to claim 9, characterized in that, The buffer plate has an arc-shaped surface, and the second housing has two guide plates. The two guide plates are symmetrically arranged on both sides of the liquid inlet channel, and a guide port is formed between the two guide plates, with the guide port facing the arc-shaped surface.

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