High-pressure elastic block buffer

Abstract

The utility model relates to the technical field of buffers, and discloses a high-pressure elastic block buffer which comprises a positive displacement pump and a buffer body, the two ends of the positive displacement pump are fixedly connected with a pump liquid inlet pipe and a pump liquid outlet pipe respectively, and the buffer body is connected to the pump liquid outlet pipe. A connector is formed in the lower surface of the shell, the buffer is connected to the pump liquid discharging pipe through the connector, an elastic damping block is arranged in the shell and tightly attached to the inner wall of the shell, a supporting ring is arranged in the shell cover, and the supporting ring is connected with the buffer through the connector. One end of the supporting ring is tightly attached to the elastic damping block, the supporting ring, the shell cover and the shell are tightly connected, and a pressure relief hole is formed in the top of the shell cover. The high-pressure elastic block buffer has the advantages of being simple in structure and good in buffering effect.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of buffer, in particular to a high-pressure elastic block buffer. BACKGROUND

[0002] The volumetric pump is a pump for transporting liquid by using the change of the volume in the pump cylinder. The instantaneous flow of the volumetric pump is usually pulsating during the operation, which causes the instability of the output hydraulic pressure in the pipeline. The buffer is a commonly used device for eliminating the liquid force pipeline pulsation. Its main function is to smooth the liquid force pulsation and reduce the pipeline vibration to protect the pipeline instruments and devices. The existing structure of the high-pressure buffer has the following disadvantages: the capsule cannot be well supported in the absence of liquid, the capsule in the head is in a fully stretched state, the internal deformation is large, and the capsule life is low when it is often in the maximum deformation state; at the same time, under the alternating pressure change of the working pump, the shape of the capsule pulsates greatly, which further affects the service life.

[0003] The Chinese utility model patent with publication number CN206439181U discloses a liquid high-pressure buffer. The liquid high-pressure buffer is directly removed as a whole by connecting the flange plate of the outlet flange and the pipeline, without discharging the gas in the capsule. After the maintenance is completed, the liquid high-pressure buffer can be installed and used continuously, which is convenient to use. The lower head is in the shape of a semi-elliptical body with a smaller radius in the vertical direction than in the horizontal direction. When the working pump is stopped, the deformation degree of the capsule is small. The liquid inlet and outlet of the lower head are provided with a splash plate, which increases the contact surface of the capsule and the lower part of the liquid high-pressure buffer, reduces stress concentration, improves the working environment of the capsule, and prolongs the service life of the capsule. However, the device still has many deficiencies.

[0004] During use, the capsule is prone to fatigue and instability under long-term high-pressure environment, which shortens the service life of the capsule and requires regular maintenance or replacement. SUMMARY

[0005] (I) Technical problems solved

[0006] In view of the deficiencies of the prior art, the present application provides a high-pressure elastic block buffer, which has the advantages of simple structure and good buffering effect, and solves the problems of complex structure and short service life of the existing device.

[0007] (II) Technical solutions

[0008] In order to achieve the above object, the present application provides the following technical scheme: A high-pressure elastic block buffer, comprising a volume pump and a buffer, both ends of the volume pump are fixedly connected with a pump liquid inlet pipe and a pump liquid outlet pipe respectively, the buffer is connected to the pump liquid outlet pipe, characterized in that the buffer comprises a shell cover and a shell, the lower surface of the shell is provided with an interface, the buffer is connected to the pump liquid outlet pipe through the interface, the inside of the shell is provided with an elastic damping block, the elastic damping block is tightly attached to the inner wall of the shell, the inside of the shell cover is provided with a support ring, one end of the support ring is tightly attached to the elastic damping block, the support ring, the shell cover and the shell are tightly connected, and the top of the shell cover is provided with a pressure relief hole.

[0009] Preferably, the outer side of the shell cover is provided with a first hanging ear, the periphery of the shell is provided with a second hanging ear, the outer side of the support ring is arranged between the first hanging ear and the second hanging ear, the side where the first hanging ear, the second hanging ear and the support ring are attached is provided with a through mounting hole, and the inside of the mounting hole is provided with a detachable bolt.

[0010] Preferably, the elastic damping block comprises an upper end cylinder and a lower end cylinder, an air chamber is formed between the upper end cylinder and the inner wall of the shell cover, a buffer cavity is formed between the lower end cylinder and the inner wall of the shell, the diameter of the upper end cylinder is smaller than the diameter of the lower end cylinder, the outer side where the upper end cylinder and the lower end cylinder are connected is provided with an annular sealing ring, and the annular sealing ring is tightly attached to the inner wall of the shell.

[0011] Preferably, the top of the elastic damping block is provided with a counterbore, and the diameter of the counterbore is greater than the diameter of the pressure relief hole.

[0012] Preferably, one end of the support ring is arranged in close contact with the upper surface of the annular sealing ring.

[0013] Preferably, the bottom of the shell is provided with a flow guide mechanism, the mounting plate of the flow guide mechanism is arranged in the inside of the buffer cavity, a rotatable rotating shaft is sleeved on the mounting plate, turbulence vanes are fixedly connected to the rotating shaft, and the turbulence vanes are arranged in the inside of the interface.

[0014] Preferably, a corrugated hose is vertically connected to the pump liquid outlet pipe at the interface of the buffer.

[0015] Preferably, the inner wall of the shell is provided with a limiting groove, and the outer wall of the elastic damping block is fixedly provided with a limiting block which is slidably arranged in the inside of the limiting groove.

[0016] (Three) beneficial effects

[0017] Compared with the prior art, the present invention provides a high-pressure elastic block buffer, which has the following beneficial effects:

[0018] 1. This high-pressure elastic block buffer is provided by connecting a pump inlet pipe and a pump outlet pipe to both ends of a volumetric pump. External liquid is pumped into the volumetric pump through the pump inlet pipe and then flows out through the pump outlet pipe. A buffer is vertically installed above the pump outlet pipe. An elastic damping block is installed inside the buffer's shell and housing. An interface is provided at the bottom of the shell, which is connected to the pump outlet pipe. Water inside the pump outlet pipe flows into the buffer through the interface. When the elastic damping block inside the buffer is impacted by the fluid at the interface, it can eliminate some of the liquid pulsation, thereby protecting the stability of the buffer and the pipeline.

[0019] 2. This high-pressure elastic block buffer has a flow guiding mechanism installed inside the buffer cavity. The mounting plate of the flow guiding mechanism is detachably fixed in the lower cylinder. A rotatable rotating shaft is installed on the mounting plate, and multiple turbulence-inducing blades are fixed on the rotating shaft. The bottom of the blades is in contact with the pump discharge pipe. When the fluid inside the pump discharge pipe pulsates, the peak of the liquid can enter the turbulence-inducing blades, thereby converting the potential energy of the fluid into the kinetic energy of the turbulence-inducing blades and the rotating shaft. This further reduces the compression of the elastic damping block by the fluid, thus extending the service life of the elastic damping block. Attached Figure Description

[0020] Figure 1 This is a schematic cross-sectional view of the shell, cover, and elastic damping block of this utility model.

[0021] Figure 2 This is a schematic diagram of the structure of this utility model.

[0022] Figure 3 This is a schematic cross-sectional view of the structure of this utility model.

[0023] Figure 4 This is a schematic diagram of the buffer structure of this utility model.

[0024] Figure 5 This is a schematic cross-sectional view of the buffer structure of this utility model.

[0025] Figure 6 This is a cross-sectional view of the buffer structure of this utility model from another angle.

[0026] In the diagram: 100, volumetric pump; 110, pump inlet pipe; 120, pump outlet pipe; 130, corrugated hose; 200, buffer; 210, housing cover; 211, pressure relief hole; 212, first lug; 220, housing; 221, interface; 222, second lug; 223, limiting groove; 230, elastic damping block; 231, upper cylinder; 232, lower cylinder; 233, air chamber; 234, buffer cavity; 235, annular sealing ring; 236, countersunk hole; 237, limiting block; 240, support ring; 250, mounting hole; 260, bolt; 270, flow guiding mechanism; 271, mounting plate; 272, rotating shaft; 273, turbulence blade. Detailed Implementation

[0027] 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.

[0028] In the description of this invention, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", 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 invention 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 invention.

[0029] In addition, a fixed connection refers to a connection in which parts or components are fixed and there is no relative movement; a transmission connection refers to a connection in which mechanical motion or torque is transmitted to other working parts through a transmission component; a sliding connection refers to a connection in which two objects are in contact but not fixed and can slide relative to each other; and a rotational connection refers to a connection in which two objects are in contact but not fixed and can rotate relative to each other.

[0030] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0031] Example 1:

[0032] This embodiment provides a high-voltage elastic block buffer, which has the following technical features.

[0033] Please see Figures 1-5 A high-pressure elastic block buffer includes a volumetric pump 100 and a buffer 200. The two ends of the volumetric pump 100 are respectively fixedly connected to a pump inlet pipe 110 and a pump outlet pipe 120. The buffer 200 is connected to the pump outlet pipe 120. The buffer 200 includes a cover 210 and a housing 220. An interface 221 is provided on the lower surface of the housing 220. The buffer 200 is connected to the pump outlet pipe 120 through the interface 221. An elastic damping block 230 is provided inside the housing 220. The elastic damping block 230 is tightly fitted to the inner wall of the housing 220. A support ring 240 is provided inside the cover 210. One end of the support ring 240 is tightly fitted to the elastic damping block 230. The support ring 240, the cover 210 and the housing 220 are tightly connected. A pressure relief hole 211 is provided on the top of the cover 210.

[0034] Furthermore, the outer side of the cover 210 is provided with a first hanging ear 212, the outer periphery of the housing 220 is provided with a second hanging ear 222, the outer side of the support ring 240 is provided between the first hanging ear 212 and the second hanging ear 222, and a through mounting hole 250 is provided on the side where the first hanging ear 212, the second hanging ear 222 and the support ring 240 fit together, and a detachable bolt 260 is provided inside the mounting hole 250.

[0035] Furthermore, the elastic damping block 230 includes an upper cylinder 231 and a lower cylinder 232. An air chamber 233 is formed between the upper cylinder 231 and the inner wall of the cover 210, and a buffer cavity 234 is formed between the lower cylinder 232 and the inner wall of the housing 220. The diameter of the upper cylinder 231 is smaller than the diameter of the lower cylinder 232. An annular sealing ring 235 is provided on the outer side where the upper cylinder 231 and the lower cylinder 232 connect. The annular sealing ring 235 is tightly fitted to the inner wall of the housing 220.

[0036] It should be noted that the elastic damping block 230 is made of rubber with a thick stepped cylindrical shape and appropriate hardness.

[0037] Furthermore, the top of the elastic damping block 230 is provided with a countersunk hole 236, the diameter of which is larger than the diameter of the pressure relief hole 211.

[0038] It should be noted that the ratio of the diameter of the countersunk hole 236 to the diameter of the upper cylinder 231 is 0.2-0.25, and the ratio of the diameter of the upper cylinder 231 to the diameter of the lower cylinder 232 is 0.7-0.72. The buffering effect is optimal under these conditions. The countersunk hole 236 can improve the elasticity of the elastic damping block 230.

[0039] Furthermore, one end of the support ring 240 is positioned in close contact with the upper surface of the annular sealing ring 235.

[0040] Furthermore, a flow guiding mechanism 270 is provided at the bottom of the housing 220. The mounting plate 271 of the flow guiding mechanism 270 is located inside the buffer cavity 234. A rotatable rotating shaft 272 is mounted on the mounting plate 271. A turbulence-disrupting blade 273 is fixedly connected to the rotating shaft 272. The turbulence-disrupting blade 273 is located inside the interface 221.

[0041] Furthermore, a corrugated hose 130 may be provided at the interface 221 of the buffer 200, which is vertically connected to the pump discharge pipe 120.

[0042] Furthermore, a limiting groove 223 is provided on the inner wall of the housing 220, and a limiting block 237 is fixedly provided on the outer wall of the elastic damping block 230, with the limiting block 237 sliding inside the limiting groove 223.

[0043] Working principle: The two ends of the positive displacement pump 100 are fixedly connected to the pump inlet pipe 110 and the pump outlet pipe 120, respectively. After the fluid passes through the pump inlet pipe 110, it can flow into the interior of the positive displacement pump 100 and then into the interior of the pump outlet pipe 120. A buffer 200 is vertically arranged above the pump outlet pipe 120. The buffer 200 includes a cover 210 and a housing 220. The bottom of the housing 220 has an interface 221. The interface 221, through the corrugated hose 130, can fix the housing 220 above the pump outlet pipe 120. An elastic damping block 230 is arranged inside the housing 220 and the cover 210. The elastic damping block 230 consists of an upper cylinder 231, a lower cylinder 232, and an annular sealing ring 235. The upper cylinder 231 is disposed inside the cover 210 and forms an air chamber 233 between itself and the inner wall of the cover 210. The lower cylinder 232 is disposed inside the housing 220 and forms a buffer cavity 234 between itself and the inner wall of the housing 220. An annular sealing ring 235 is provided between the upper cylinder 231 and the lower cylinder 232. The lower surface of the annular sealing ring 235 is tightly fitted with the surface of the second lug 222 on the housing 220, which ensures the airtightness of the buffer cavity 234. A support ring 240 is provided on the lower surface of the first lug 212 on the cover 210. The lower surface of the support ring 240 is tightly fitted with the annular sealing ring 235. The first lug 212, the second lug 222, and the support ring 240 form a buffer cavity 234. A through mounting hole 250 is provided at the overlapping position of the rings 240. A removable bolt 260 is provided inside the mounting hole 250. The bottom of the bolt 260 is fixed by a washer and a nut, which ensures that the cover 210, the housing 220 and the support ring 240 can be fixed together. The support ring 240 forms an air chamber 233 between the upper cylinder 231 and the inner wall of the cover 210. The support ring 240 contacts the elastic damping block 230, thereby increasing the pressure bearing capacity of the elastic damping block 230. The support ring 240 also ensures good sealing between the lower cylinder 232 and the inner wall of the housing 220, so that the elastic damping block 230 can withstand the pulse of the fluid inside the pump discharge pipe 120. When the fluid flows, it can perform a high-suction, low-throw motion, thus smoothing the fluid inside the pump discharge pipe 120. Simultaneously, a flow guiding mechanism 270 is provided at the interface 221 of the housing 220. The mounting plate 271 of the flow guiding mechanism 270 is detachably fixed inside the housing 220 and is located on the side near the interface 221. A rotatable rotating shaft 272 is positioned at the upper limit of the mounting plate 271. A baffle vane 273 is fixedly connected to the side of the rotating shaft 272 near the interface 221. Thus, when the fluid flows inside the pump discharge pipe 120, at the peak of the discharge fluid pulsation, a portion of the fluid flows through the interface 221 into the buffer 200. At this time, because the direction of the baffle vane 273 is matched with the fluid flow direction, it effectively prevents this.In this way, the fluid flowing over the baffle blades 273 can convert some of its potential energy into the kinetic energy of the rotating shaft 272 and the baffle blades 273. This reduces the impact of vibrations generated during peak fluid pulsations on the pipe and buffer 200, thereby protecting the pipe and buffer 200 and extending the service life of the elastic damping block 230. Furthermore, a limiting groove 223 is formed on the inner wall of the housing 220, and a limiting block 237 is fixedly installed on the elastic damping block 230 at the corresponding position. The limiting block 237 slides inside the limiting groove 223, allowing the fluid flowing into the buffer cavity 234 to... When the fluid flow is at its lowest point, the internal pressure of the buffer chamber 234 increases, compressing the elastic damping block 230. This causes the elastic damping block 230 to push upwards, drawing in the peak flow rate. The limiting block 237 and the limiting groove 223 ensure that the elastic damping block 230 can deform vertically, reducing the risk of unnecessary collisions. When the fluid pulsation is at its lowest point, the internal pressure of the buffer chamber 234 decreases, causing the elastic damping block 230 to expand, reducing the volume of the buffer chamber 234, and resetting the elastic damping block 230. This results in a smoother flow of fluid inside the pump discharge pipe 120.

[0044] In summary, this high-pressure elastic block buffer, through the connection of a pump inlet pipe 110 and a pump outlet pipe 120 at both ends of a volumetric pump 100, allows external liquid to be pumped into the volumetric pump 100 through the pump inlet pipe 110 and then out through the pump outlet pipe 120. A buffer 200 is vertically installed above the pump outlet pipe 120. An elastic damping block 230 is installed inside the cover 210 and the housing 220 of the buffer 200. An interface 221 is provided at the bottom of the housing 220, which is connected to the pump outlet pipe 120. The water inside the pump outlet pipe 120 flows into the buffer 200 along the interface 221. When the elastic damping block 230 inside the buffer 200 is impacted by the fluid at the interface 221, it can eliminate part of the liquid pulsation, thereby protecting the stability of the buffer 200 and the pipeline.

[0045] This high-pressure elastic block buffer has a flow guiding mechanism 270 installed inside the buffer cavity 234 inside the buffer 200. The mounting plate 271 of the flow guiding mechanism 270 is detachably fixed in the lower cylinder 232. A rotatable rotating shaft 272 is installed on the mounting plate 271. Multiple turbulence blades 273 are fixedly installed on the rotating shaft 272. The bottom of the blades is in contact with the pump discharge pipe 120. When the fluid inside the pump discharge pipe 120 pulsates, the peak of the liquid can enter the turbulence blades 273, thereby converting the potential energy of the fluid into the kinetic energy of the turbulence blades 273 and the rotating shaft 272. This can further reduce the compression of the elastic damping block 230 by the fluid, and thus extend the service life of the elastic damping block 230.

[0046] It should be noted that, in this document, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0047] Although embodiments of the invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A high-pressure elastic block buffer, comprising a volumetric pump (100) and a buffer (200), wherein a pump inlet pipe (110) and a pump outlet pipe (120) are fixedly connected to both ends of the volumetric pump (100), and the buffer (200) is connected to the pump outlet pipe (120), characterized in that: The buffer (200) includes a cover (210) and a housing (220). An interface (221) is provided on the lower surface of the housing (220). The buffer (200) is connected to the pump discharge pipe (120) through the interface (221). An elastic damping block (230) is provided inside the housing (220). The elastic damping block (230) is tightly fitted to the inner wall of the housing (220). A support ring (240) is provided inside the cover (210). One end of the support ring (240) is tightly fitted to the elastic damping block (230). The support ring (240), the cover (210), and the housing (220) are tightly connected. A pressure relief hole (211) is provided on the top of the cover (210).

2. The high-voltage elastic block buffer according to claim 1, characterized in that, The outer side of the cover (210) is provided with a first hanging ear (212), the outer periphery of the housing (220) is provided with a second hanging ear (222), the outer side of the support ring (240) is provided between the first hanging ear (212) and the second hanging ear (222), and a through mounting hole (250) is provided on the side where the first hanging ear (212), the second hanging ear (222) and the support ring (240) fit together, and a detachable bolt (260) is provided inside the mounting hole (250).

3. A high-voltage elastic block buffer according to claim 1, characterized in that, The elastic damping block (230) includes an upper cylinder (231) and a lower cylinder (232). An air chamber (233) is formed between the upper cylinder (231) and the inner wall of the shell cover (210). A buffer cavity (234) is formed between the lower cylinder (232) and the inner wall of the shell (220). The diameter of the upper cylinder (231) is smaller than the diameter of the lower cylinder (232). An annular sealing ring (235) is provided on the outer side of the connection between the upper cylinder (231) and the lower cylinder (232). The annular sealing ring (235) is tightly fitted to the inner wall of the shell (220).

4. A high-voltage elastic block buffer according to claim 1, characterized in that, The top of the elastic damping block (230) is provided with a countersunk hole (236), the diameter of which is larger than the diameter of the pressure relief hole (211).

5. A high-voltage elastic block buffer according to claim 3, characterized in that, One end of the support ring (240) is positioned in close contact with the upper surface of the annular sealing ring (235).

6. A high-voltage elastic block buffer (200) according to claim 3, characterized in that, The bottom of the housing (220) is provided with a flow guiding mechanism (270), and the mounting plate (271) of the flow guiding mechanism (270) is located inside the buffer cavity (234). A rotatable rotating shaft (272) is fitted on the mounting plate (271), and a baffle blade (273) is fixedly connected to the rotating shaft (272). The baffle blade (273) is located inside the interface (221).

7. A high-voltage elastic block buffer according to claim 1, characterized in that, A corrugated hose (130) may be provided at the interface (221) of the buffer (200) and vertically connected to the pump discharge pipe (120).

8. A high-voltage elastic block buffer according to claim 1, characterized in that, The inner wall of the housing (220) is provided with a limiting groove (223), and the outer wall of the elastic damping block (230) is fixedly provided with a limiting block (237), and the limiting block (237) slides inside the limiting groove (223).

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