A kind of pressure stabilizing device for emulsion explosive delivery

Abstract

The application discloses a kind of for emulsion explosive delivery pressure stabilizing device, including being arranged between delivery pump and conveying pipeline for adjusting the first pressure stabilizing mechanism of pulsating pressure at the outlet of delivery pump, and second pressure stabilizing mechanism for adjusting residual pulsating pressure is arranged at the outlet of the conveying pipeline, the first pressure stabilizing mechanism includes two ends respectively with the outlet of delivery pump and conveying pipeline communication conveying hose assembly, and outer sleeve is sleeved on the conveying hose assembly outside, buffering pressure chamber is formed between the conveying hose assembly and the outer sleeve, the buffering pressure chamber is equipped with buffer preset back pressure, the conveying hose assembly includes coaxially arranged inner tube and outer tube, the inner tube and outer tube are filled with incompressible medium, and limiting sleeve is arranged between the inner tube and outer tube, medium flow channel is arranged on the limiting sleeve. The application effectively reduces the pulsating amount of material conveying, and significantly improves the filling accuracy.

Description

TECHNICAL FIELD

[0001] The present application belongs to the field of packaging delivery, and particularly relates to a pressure stabilizing device. BACKGROUND

[0002] In the industry of packaging emulsion explosive, with the continuous improvement of automation level, higher requirements are put forward for the performance and operation stability of production equipment, especially emulsion charging machine. In the core charging link, the charging accuracy of emulsion charging machine directly determines the weight control precision of single explosive roll.

[0003] At present, the double-piston pump applied in emulsion charging machine is used for explosive delivery due to its relatively low running speed, small friction speed and high safety. However, when the pump type alternately delivers materials in two piston cylinders, there is inevitably an instantaneous pressure peak. In order to solve this problem, a buffer is usually arranged at the outlet position of the pump to timely absorb and eliminate these pressure pulsations.

[0004] However, due to the limited pressure bearing capacity of the elastic element of the buffer, the instantaneous pressure peak is easy to cause damage to the elastic element. In addition, since the emulsion explosive delivered is high-viscosity material, the material has large viscosity and poor flowability, the speed of pressure wave conduction to the elastic element in viscous material is relatively slow, and the damping effect generated by high viscosity will hinder the elastic element to produce sufficient and rapid effective deformation to completely absorb the pulsation energy. The buffer has a deficiency in absorbing and supplementing pressure pulsation, so that the remaining pulsation pressure affects the stability of the outlet pressure of the discharge pipe, resulting in the weight fluctuation of single explosive roll, so that the precision cannot meet the increasingly strict production requirements. SUMMARY

[0005] The technical problem to be solved by the present application is to overcome the deficiencies and defects mentioned in the above background technology, and to provide a pressure stabilizing device for emulsion explosive delivery which can quickly and timely absorb the pressure peak at the outlet of the pump, and is not easy to be damaged, the pulsation is fully eliminated, and the pressure of the discharge pipe is stable.

[0006] To solve the above technical problems, the technical solution provided by the present application is:

[0007] The utility model provides a kind of pressure stabilizing device for emulsion explosive delivery, including first pressure stabilizing mechanism for adjusting pulsating pressure at the outlet of delivery pump between delivery pump and delivery pipeline, and second pressure stabilizing mechanism for adjusting residual pulsating pressure at the outlet of the delivery pipeline, the first pressure stabilizing mechanism includes the delivery hose assembly with the outlet of delivery pump and delivery pipeline communication respectively at two ends, and the outer sleeve of the delivery hose assembly is sleeved, buffer pressure chamber is formed between the delivery hose assembly and the outer sleeve, the buffer pressure chamber is equipped with buffer preset back pressure, the delivery hose assembly includes coaxially arranged inner tube and outer tube, the inner tube and outer tube are filled with incompressible medium, and limiting sleeve is equipped between the inner tube and outer tube, and medium flow channel is equipped on the limiting sleeve.The first pressure stabilizing mechanism at the outlet of delivery pump can eliminate most of the pulsating pressure, and the second pressure stabilizing mechanism at the outlet of delivery pipeline can be quickly and finely adjusted to the remaining small pulsating pressure, and the two work together to effectively reduce the material pulsation during the whole delivery process, thereby significantly improving the filling accuracy, making the weight of single cartridge closer to the target value, and reducing the problem of large weight deviation.Secondly, the incompressible medium filled between the inner tube and outer tube of the first pressure stabilizing mechanism can ensure that they deform synchronously and form a whole hose structure, and the limiting sleeve arranged therebetween provides bidirectional limiting protection, when the whole hose expands outward, the inner tube can resist the inner wall of the limiting sleeve to prevent excessive expansion and achieve outer limiting, and when the whole hose deforms inward and shrinks, the outer tube can resist the outer wall of the limiting sleeve to prevent excessive shrinkage and achieve inner limiting.

[0008] In the pressure stabilizing device, preferably, the second pressure stabilizing mechanism comprises a connecting pipeline connected to the outlet of the delivery pipeline, the connecting pipeline is symmetrically provided with a first compensation assembly and a second compensation assembly, the first compensation assembly comprises a first elastic diaphragm for adjusting the pulsating pressure in the connecting pipeline by deformation, and a first pressure adjusting assembly for providing a first preset back pressure for the first elastic diaphragm, the first preset back pressure is greater than the buffer preset back pressure, the second compensation assembly comprises a second elastic diaphragm for adjusting the pulsating pressure in the connecting pipeline by deformation, and a second pressure adjusting assembly for providing a second preset back pressure for the second elastic diaphragm, the second preset back pressure is greater than the first preset back pressure. With this arrangement, the buffer preset back pressure of the first pressure stabilizing mechanism is the smallest, the deformation of the delivery hose assembly is the largest, most of the pulsating pressure at the outlet of the delivery pump can be eliminated, the first preset back pressure of the first compensation assembly is larger, the deformation of the first elastic diaphragm is smaller and faster, and the remaining pulsating pressure can be further eliminated, the second preset back pressure of the symmetrically arranged second compensation assembly is the largest, and the pulsating pressure not eliminated by the first compensation assembly can be further accurately eliminated, so as to stabilize the outlet pressure of the delivery pipeline and reduce the problem of large weight deviation.

[0009] In the pressure stabilizing device, preferably, the connecting pipeline is provided with a first opening and a second opening, the first elastic diaphragm is arranged at the first opening, and the second elastic diaphragm is arranged at the second opening, the first pressure adjusting assembly comprises a first shield covering the first elastic diaphragm, and a first pressure chamber is formed between the first shield and the first elastic diaphragm, and the second pressure adjusting assembly comprises a second shield covering the second elastic diaphragm, and a second pressure chamber is formed between the second shield and the second elastic diaphragm. By arranging the elastic diaphragm at the opening of the connecting pipeline, the contact area of the elastic diaphragm with the material is large, when the pulsating pressure of the material in the pipeline changes, the elastic diaphragm with a large contact area can quickly perceive and deform accordingly, especially for high-viscosity, fast-changing-pressure-in-pipeline material such as emulsion explosive, the elastic diaphragm can respond and handle the pulsation more timely. In addition, due to the high viscosity and poor flowability of emulsion explosive, the existing buffer device has many dead angles, which is easy to cause blockage. By arranging the elastic diaphragm at the opening of the delivery pipeline, the material can be in a continuous flow state all the time, greatly reducing the risk of blockage and the probability of equipment failure and maintenance, and facilitating daily flushing of residual sticky material in the compensation device.

[0010] Preferably, the first pressure regulating assembly further comprises a first air tank connected with the first pressure chamber, the second pressure regulating assembly further comprises a second air tank connected with the second pressure chamber, and the buffer pressure chamber is connected with a buffer air tank. The air tank can effectively play a role in buffering and stabilizing pressure, and makes back pressure regulation more flexible and convenient. The operator can adjust the pressure in each air tank to change the back pressure in each pressure chamber according to the conveying flow, pressure change and required filling accuracy of the material in the production process, so as to accurately control the deformation degree of the elastic member and achieve the best compensation effect.

[0011] Preferably, the first pressure regulating assembly further comprises a first air tank connected with the first pressure chamber, the second pressure regulating assembly further comprises a second air tank connected with the second pressure chamber, and the buffer pressure chamber is connected with a buffer air tank. The air tank can effectively play a role in buffering and stabilizing pressure, and makes back pressure regulation more flexible and convenient. The operator can adjust the pressure in each air tank to change the back pressure in each pressure chamber according to the conveying flow, pressure change and required filling accuracy of the material in the production process, so as to accurately control the deformation degree of the elastic member and achieve the best compensation effect.

[0012] Preferably, the first pressure regulating assembly further comprises a first air tank connected with the first pressure chamber, the second pressure regulating assembly further comprises a second air tank connected with the second pressure chamber, and the buffer pressure chamber is connected with a buffer air tank. The air tank can effectively play a role in buffering and stabilizing pressure, and makes back pressure regulation more flexible and convenient. The operator can adjust the pressure in each air tank to change the back pressure in each pressure chamber according to the conveying flow, pressure change and required filling accuracy of the material in the production process, so as to accurately control the deformation degree of the elastic member and achieve the best compensation effect.

[0013] Preferably, the inner layer hose is connected with the joint pipe body, the connection limiting boss is provided with a limiting step on one side, the limiting sleeve is clamped on the limiting step, and the other side of the connection limiting boss is sealingly and fixedly connected with the flange plate. The hose clamp can provide strong clamping force, so that the inner layer hose is tightly combined with the joint pipe body, the loosening or falling of the inner layer hose is avoided, material leakage at the connection position is effectively prevented, the sealing property of the material conveying channel is ensured, and the leakage of the incompressible medium between the inner layer hose and the outer layer hose is effectively prevented. The limiting step on one side of the connection limiting boss can accurately clamp the limiting sleeve, the displacement of the limiting sleeve in the axial and radial directions is effectively prevented, the stable support and limiting effect are ensured, and the other side is fixedly connected with the flange plate, so that the stable connection between the joint pipe body and the flange plate is realized.

[0014] Preferably, the outer layer hose is provided with a radial outwardly expanded clamping position flange at both ends, the limiting ring is press-connected to the outer wall of the outer layer hose, the clamping position flange is clamped between the limiting ring and the flange plate, the clamping position flange is provided with a sealing flange on the side close to the flange plate, and the flange plate is provided with a sealing groove matched with the sealing flange. The cooperation of the clamping position flange, the limiting ring and the flange plate provides reliable axial limiting for the outer layer hose, the limiting ring is press-connected to the outer wall of the outer layer hose, and the clamping position flange and the limiting ring jointly form a double sealing effect, and the sealing reliability between the outer layer hose and the flange plate is improved. The sealing flange can prevent the incompressible medium from leaking from the flange plate connection position.

[0015] Preferably, the medium flow channel is a plurality of first liquid passing holes uniformly distributed on the limiting sleeve. When the pressure changes, the incompressible medium can flow quickly and uniformly between the inner layer hose and the outer layer hose, so that the inner layer hose and the outer layer hose can deform synchronously, and the limiting sleeve can also provide uniform limiting strength, so that the damage of components caused by excessive local stress is reduced.

[0016] Preferably, the medium flow channel is a plurality of second liquid passing holes arranged at both ends of the limiting sleeve. When the pressure changes greatly, the inner layer hose and the outer layer hose deform synchronously, the middle part of the limiting sleeve is subjected to the greatest pressure, the solid structure of the middle part can provide continuous and uniform radial support because no liquid passing hole is arranged in the middle part, the anti-breakage ability of the hose under high pressure pulsation is improved, and the pressure resistance of the middle part of the limiting sleeve is ensured.

[0017] Compared with the prior art, the advantages of the present application are that:

[0018] By setting the first pressure stabilizing mechanism at the outlet of the conveying pump and the second pressure stabilizing mechanism at the outlet of the conveying pipeline, the two mechanisms work together to effectively eliminate most of the pulsating pressure and finely adjust the remaining small pulsating pressure, thereby effectively reducing the material pulsation during the whole conveying process, significantly improving the filling precision, making the weight of a single cigarette closer to the target value, and reducing the problem of large weight deviation. Secondly, the first pressure stabilizing mechanism fills the incompressible medium between the inner hose and the outer hose to ensure that the two hoses deform synchronously and form an integral hose structure, and effectively adjusts the material conveying pressure pulsation through the deformation thereof. The limiting sleeve provides bidirectional limiting protection, when the integral hose expands outward, the inner hose abuts against the inner wall of the limiting sleeve to prevent excessive expansion and realize outer limiting; when the integral hose deforms inwardly and shrinks, the outer hose abuts against the outer wall of the limiting sleeve to prevent excessive shrinkage and realize inner limiting. The limiting structure is placed outside the material flow channel, which ensures smooth flow of the material in the flow channel, eliminates the risk of hardening and clogging, and more significantly enhances the pressure-bearing capacity and deformation resistance of the hose. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings described below are some embodiments of the present application, and those skilled in the art can obtain other drawings according to these drawings without any creative effort.

[0020] Figure 1 The overall structure schematic diagram of the pressure stabilizing device for emulsion explosive conveying of embodiment 1;

[0021] Figure 2 The three-dimensional structure schematic diagram of the first pressure stabilizing mechanism of embodiment 1;

[0022] Figure 3 The cross-sectional structure schematic diagram of the first pressure stabilizing mechanism of embodiment 1;

[0023] Figure 4 The enlarged view of A of Figure 3

[0024] Figure 5 The limiting sleeve structure schematic diagram of embodiment 1;

[0025] Figure 6 The three-dimensional structure schematic diagram of the second pressure stabilizing mechanism of embodiment 1;

[0026] Figure 7 The left view of the second pressure stabilizing mechanism of embodiment 1;

[0027] Figure 8 ​A-A sectional view of the second pressure stabilizing mechanism of Example 1;

[0028] Figure 9 A-A sectional view of the second pressure stabilizing mechanism of Example 1; Figure 8 A-A sectional view of the second pressure stabilizing mechanism of Example 1;

[0029] Figure 10 A-A sectional view of the second pressure stabilizing mechanism of Example 1;

[0030] Legend

[0031] 1, first pressure stabilizing mechanism; 11, conveying hose assembly; 111, inner hose; 1111, hose clamp; 112, limiting sleeve; 1121, first liquid passage hole; 1122, second liquid passage hole; 113, outer hose; 1131, clamping flange; 1132, sealing flange; 12, outer sleeve; 121, limiting ring; 122, first pressure gauge; 123, compressed medium inlet and outlet; 124, liquid injection port; 13, joint assembly; 131, joint pipe body; 132, connecting limiting boss; 1321, limiting step; 1322, sealing element; 133, flange; 14, buffer gas storage tank; 15, buffer connecting pipe; 2, second pressure stabilizing mechanism; 21, connecting pipe; 211, first opening; 212, second opening; 213, first concave base; 214, second concave base; 22, first compensation assembly; 221, first elastic diaphragm; 222, first pressure regulating assembly; 2221, first protective cover; 22211, second pressure gauge; 2222, first gas storage tank; 2223, first connecting pipe; 23, second compensation assembly; 231, second elastic diaphragm; 232, second pressure regulating assembly; 2321, second protective cover; 2322, second gas storage tank; 2323, second connecting pipe; 3, conveying pump; 4, conveying pipe. DETAILED DESCRIPTION

[0032] In order to facilitate the understanding of the present application, the following will be a more comprehensive and detailed description of the present application in conjunction with the drawings and preferred embodiments of the specification, but the protection scope of the present application is not limited to the following specific embodiments.

[0033] It should be particularly noted that when an element is described as being "fixed to, connected to, or communicated to" another element, it can be directly fixed, connected, or communicated to another element, or indirectly fixed, connected, or communicated to another element through other intermediate connecting elements.

[0034] Unless otherwise defined, all professional terms used herein have the same meaning as generally understood by those skilled in the art. The professional terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the protection scope of the present application.

[0035] Unless otherwise specified, all raw materials, reagents, instruments and equipment used in this invention can be purchased from the market or prepared by existing methods.

[0036] Example 1:

[0037] like Figures 1 to 9 As shown, the pressure stabilizing device for conveying emulsion explosives in this embodiment includes a first pressure stabilizing mechanism 1 disposed between the conveying pump 3 and the conveying pipeline 4 for adjusting the pulsating pressure at the outlet of the conveying pump 3, and a second pressure stabilizing mechanism 2 disposed at the outlet of the conveying pipeline 4 for adjusting the remaining pulsating pressure. The first pressure stabilizing mechanism 1 includes a conveying hose assembly 11 with its two ends connected to the outlet of the conveying pump 3 and the conveying pipeline 4, respectively, and an outer sleeve 12 sleeved outside the conveying hose assembly 11. A buffer pressure chamber is formed between the conveying hose assembly 11 and the outer sleeve 12. The buffer pressure chamber is provided with a buffer preset back pressure. The conveying hose assembly 11 includes an inner hose 111 and an outer hose 113 coaxially arranged. An incompressible medium is filled between the inner hose 111 and the outer hose 113, and a limiting sleeve 112 is provided between the inner hose 111 and the outer hose 113. The limiting sleeve 112 is provided with a medium flow channel.

[0038] In this embodiment, as Figures 6 to 9 As shown, the second pressure stabilizing mechanism 2 includes a connecting pipe 21 connected to the outlet of the conveying pipe 4. A first compensation component 22 and a second compensation component 23 are symmetrically arranged on the connecting pipe 21. The first compensation component 22 includes a first elastic diaphragm 221 that adjusts the pulsating pressure inside the connecting pipe 21 by deformation, and a first pressure regulating component 222 for providing a first preset back pressure to the first elastic diaphragm 221. The first preset back pressure is greater than the buffer preset back pressure. The second compensation component 23 includes a second elastic diaphragm 231 that adjusts the pulsating pressure inside the connecting pipe 21 by deformation, and a second pressure regulating component 232 for providing a second preset back pressure to the second elastic diaphragm 231. The second preset back pressure is greater than the first preset back pressure.

[0039] In this embodiment, the pipe wall of the connecting pipe 21 is provided with a first opening 211 and a second opening 212. A first elastic diaphragm 221 is laid at the first opening 211, and a second elastic diaphragm 231 is laid at the second opening 212. The first pressure regulating component 222 includes a first protective cover 2221 covering the first elastic diaphragm 221, and a first pressure chamber is formed between the first protective cover 2221 and the first elastic diaphragm 221. The second pressure regulating component 232 includes a second protective cover 2321 covering the second elastic diaphragm 231, and a second pressure chamber is formed between the second protective cover 2321 and the second elastic diaphragm 231.

[0040] In this embodiment, the second elastic diaphragm 231 is thicker than the first elastic diaphragm 221. The first elastic diaphragm 221 adopts a single diaphragm, and the second elastic diaphragm 231 adopts two single diaphragms arranged in a laminated manner. In other embodiments, the number and thickness of the diaphragms of the second elastic diaphragm 231 can be adjusted according to specific needs. The thicker elastic diaphragm can better withstand higher back pressure and maintain stable deformation characteristics. Under high back pressure conditions, it can effectively adjust the pulsating pressure in a small range, and achieve fine compensation for the material pulsation.

[0041] In this embodiment, the first opening 211 on the outer side of the pipe wall of the connecting pipeline 21 is surrounded by a first concave base 213, and the first elastic diaphragm 221 is attached to the first concave base 213. The outer side of the pipe wall of the connecting pipeline 21 is also provided with a second concave base 214 symmetrically arranged with the first concave base 213, and the second elastic diaphragm 231 is attached to the second concave base 214. By arranging the concave base, the elastic diaphragm can be attached to the opening while being stably fixed on the concave base, avoiding displacement or loosening of the diaphragm during use, and providing a larger effective deformation space for the elastic diaphragm, a larger contact area with the material, and more accurate adjustment of pressure changes in the pipeline. In addition, the concave base can also serve as a limiting function for the elastic diaphragm to prevent excessive contraction during deformation. The first compensation assembly 22 and the second compensation assembly 23 are symmetrically arranged, so that the elastic diaphragm can deform and adjust independently in its own space without interference, and ensure that the first elastic diaphragm 221 and the second elastic diaphragm 231 can synchronously perceive and respond to pressure changes, effectively and finely compensate for material pulsation, and form a better synergistic effect.

[0042] In this embodiment, as shown in Figure 1 The first pressure regulating assembly 222 further includes a first gas tank 2222 connected to the first pressure chamber, and the second pressure regulating assembly 232 further includes a second gas tank 2322 connected to the second pressure chamber. The buffer pressure chamber is connected to a buffer gas tank 14. Specifically, the first pressure chamber is in communication with the first gas tank 2222 through a first connecting pipe 2223, the second pressure chamber is in communication with the second gas tank 2322 through a second connecting pipe 2323, and the buffer pressure chamber is in communication with the buffer gas tank 14 through a buffer connecting pipe 15.

[0043] In this embodiment, the first shroud 2221 is provided with a second pressure gauge 22211 for displaying the pressure of the pressure chamber.

[0044] In this embodiment, as shown in Figures 2 to 4As shown, the first pressure stabilizing mechanism 1 also includes a connector assembly 13 with one end connected to the outlet of the delivery pump 3 and the other end connected to the delivery pipeline 4. The two ends of the delivery hose assembly 11 and the outer sleeve 12 are respectively fixed to the connector assembly 13, and both ends of the delivery hose assembly 11 and the outer sleeve 12 are sealed on the connector assembly 13.

[0045] In this embodiment, the connector assembly 13 includes a connector tube 131, a connecting limiting boss 132, and a flange 133. The inner hose 111 is sealed and fitted at one end of the connector tube 131, and the other end of the connector tube 131 is connected to the outlet of the delivery pump 3 / delivery pipeline 4. The connecting limiting boss 132 is fixed at the middle position of the connector tube 131, and the limiting sleeve 112 is clamped on the connecting limiting boss 132. The end of the outer sleeve 12 is provided with a radially inward limiting ring 121. The outer hose 113 is clamped between the connecting limiting boss 132 and the limiting ring 121. The flange 133, the outer sleeve 12, and the connecting limiting boss 132 are all sealed and fixed.

[0046] In this embodiment, a hose clamp 1111 is provided at the connection between the inner hose 111 and the connector tube body 131. A limiting step 1321 is provided on one side of the connecting limiting boss 132. The limiting sleeve 112 is clamped on the limiting step 1321. The other side of the connecting limiting boss 132 is sealed and fixed to the flange 133.

[0047] In this embodiment, the outer flexible hose 113 has radially outwardly expanding locking flanges 1131 at both ends. The limiting ring 121 is pressed against the outer wall of the outer flexible hose 113. The locking flanges 1131 are clamped between the limiting ring 121 and the flange 133. The locking flange 1131 has a sealing flange 1132 on the side near the flange 133. The flange 133 has a sealing groove that matches the sealing flange 1132.

[0048] In this embodiment, a sealing element 1322 is provided on the side of the connecting limiting boss 132 near the flange 133.

[0049] In this embodiment, as Figure 5 As shown, the medium flow channel is a plurality of first liquid passage holes 1121 evenly distributed on the limiting sleeve 112.

[0050] In this embodiment, the outer sleeve 12 is provided with a first pressure gauge 122. The outer sleeve 12 is also provided with a compressible medium inlet / outlet 123, and the flange 133 is provided with a liquid injection port 124 for filling the space between the inner hose 111 and the outer hose 113 with an incompressible medium.

[0051] In this embodiment, the specific operation steps include, first, fill the compressed gas between the outer sleeve 12 and the outer hose 113 through the compression medium inlet and outlet 123 in advance, the buffer preset back pressure value is set to 60%-80% of the expected working delivery pressure, at this time the outer hose 113 deforms inward under the action of gas pressure, then fill the incompressible liquid between the inner hose 111 and the outer hose 113 through the liquid injection port 124, continue to fill until the inner diameter of the inner hose 111 is contracted to about 80% of its free state inner diameter, so that the inner hose 111 and the outer hose 113 basically realize synchronous inward deformation, after completion, close the liquid injection port 124, then install the pipeline type pressure pulsation buffer device at the outlet position of the double piston pump.

[0052] Start the double piston pump, the delivery pressure acts on the inner hose 111 and is transmitted to the outer hose 113, under the action of the buffer preset back pressure, the inner hose 111 and the outer hose 113 expand and deform synchronously, reaching the initial pressure balance state, at this time the first elastic diaphragm 221 and the second elastic diaphragm 231 are also in pressure balance state under the action of the first preset back pressure and the second preset back pressure.

[0053] When the delivery pressure instantaneously increases, the inner hose 111 and the outer hose 113 continue to expand outward synchronously, eliminating the increased pressure by expansion deformation, since the high viscosity material causes the pressure change rate in the pipeline to be fast, and the delivery hose assembly 11 responds with a lag, part of the pressure is not eliminated in time, when the material flows to the connecting pipeline 21, the first elastic diaphragm 221 and the second elastic diaphragm 231 will deform to the side of the first shield 2221 and the second shield 2321 respectively, further eliminating the remaining increased pressure, so that the material flow maintains a relative constant value.

[0054] When the delivery pressure instantaneously decreases, the inner hose 111 and the outer hose 113 contract inward synchronously, compensating for the decreased pressure by contraction deformation, at this time part of the pressure is not compensated in time, when the material flows to the connecting pipeline 21, the first elastic diaphragm 221 and the second elastic diaphragm 231 will deform to the inside of the connecting pipeline 21 respectively, further compensating for the decreased pressure, so that the material flow still maintains a relative constant value, achieving the purpose of reducing flow pulsation and increasing flow speed stability.

[0055] In this embodiment, the specific working process is illustrated by examples:

[0056] Under the baseline condition, assuming the pressure of the conveying pipeline 4 is 0.5 MPa under normal conveying conditions, by applying preset buffer back pressure, first preset back pressure and second preset back pressure (where the second preset back pressure is greater than the first preset back pressure and greater than the buffer preset back pressure) to the buffer pressure chamber, the first pressure chamber and the second pressure chamber respectively, the conveying hose assembly 11, the first elastic diaphragm 221 and the second elastic diaphragm 231 are in a pressure balance state, thereby stabilizing the output pressure of 0.5 MPa.

[0057] In situations where pressure increases, such as when the pressure during delivery suddenly rises to 0.6 MPa, ideally, only deformation of the delivery hose assembly 11 is needed to release 0.1 MPa. However, due to the high viscosity of the material causing a rapid rate of pressure change within the pipeline, and the diaphragm response exhibiting lag, the delivery hose assembly 11 actually only releases 0.07 MPa, leaving 0.03 MPa unresolved. At this point, the first elastic diaphragm 221 and the second elastic diaphragm 231 come into play. Their deformation response is more sensitive and smaller in amplitude. By precisely controlling the pressure of the corresponding gas storage tanks, the first elastic diaphragm 221 can quickly deform to release the remaining 0.02 MPa of pressure, while the second elastic diaphragm 231 can quickly deform to release the remaining 0.01 MPa of pressure, ensuring that the output pressure remains stable at 0.5 MPa.

[0058] In a pressure reduction state, such as when the pressure during delivery suddenly drops to 0.4 MPa, ideally the deformation of the delivery hose assembly 11 should compensate for 0.1 MPa. However, due to the viscosity of the material and the response lag, the delivery hose assembly 11 only compensates for 0.07 MPa, leaving 0.03 MPa uncompensated. The first elastic diaphragm 221 and the second elastic diaphragm 231 then undergo slight deformation. The first elastic diaphragm 221 compensates for 0.02 MPa of pressure, while the second elastic diaphragm 231 compensates for the remaining 0.01 MPa of pressure, ultimately ensuring that the output pressure is stably maintained at 0.5 MPa.

[0059] Example 2:

[0060] like Figure 10 As shown, the pressure stabilizing device for conveying emulsion explosives in this embodiment is basically the same as that in Embodiment 1, except that the medium flow channel is a plurality of second liquid passage holes 1122 provided at both ends of the limiting sleeve 112. This further improves the hose's resistance to rupture under high pressure pulsation, while ensuring the compressive strength of the middle part of the limiting sleeve 112.

[0061] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A pressure stabilizing device for conveying emulsion explosives, characterized in that, The system includes a first pressure stabilizing mechanism (1) located between the delivery pump (3) and the delivery pipeline (4) for adjusting the pulsating pressure at the outlet of the delivery pump (3), and a second pressure stabilizing mechanism (2) located at the outlet of the delivery pipeline (4) for adjusting the remaining pulsating pressure. The first pressure stabilizing mechanism (1) includes a delivery hose assembly (11) with its two ends connected to the outlet of the delivery pump (3) and the delivery pipeline (4) respectively, and an outer sleeve (12) sleeved over the delivery hose assembly (11). 11) A buffer pressure chamber is formed between the outer tube (12) and the outer tube, the buffer pressure chamber is provided with a buffer preset back pressure, the delivery hose assembly (11) includes an inner hose (111) and an outer hose (113) arranged coaxially, the inner hose (111) and the outer hose (113) are filled with an incompressible medium, and a limiting sleeve (112) is provided between the inner hose (111) and the outer hose (113), the limiting sleeve (112) is provided with a medium flow channel; The second pressure stabilizing mechanism (2) includes a connecting pipe (21) connected to the outlet of the conveying pipe (4). A first compensation component (22) and a second compensation component (23) are symmetrically arranged on the connecting pipe (21). The first compensation component (22) includes a first elastic diaphragm (221) that adjusts the pulsating pressure in the connecting pipe (21) by deformation, and a first pressure regulating component (222) for providing a first preset back pressure to the first elastic diaphragm (221). The first preset back pressure is greater than the buffer preset back pressure. The second compensation component (23) includes a second elastic diaphragm (231) that adjusts the pulsating pressure in the connecting pipe (21) by deformation, and a second pressure regulating component (232) for providing a second preset back pressure to the second elastic diaphragm (231). The second preset back pressure is greater than the first preset back pressure.

2. The voltage stabilizing device according to claim 1, characterized in that, The connecting pipe (21) has a first opening (211) and a second opening (212) on its wall. The first elastic diaphragm (221) is laid at the first opening (211), and the second elastic diaphragm (231) is laid at the second opening (212). The first pressure regulating component (222) includes a first protective cover (2221) covering the first elastic diaphragm (221), and a first pressure chamber is formed between the first protective cover (2221) and the first elastic diaphragm (221). The second pressure regulating component (232) includes a second protective cover (2321) covering the second elastic diaphragm (231), and a second pressure chamber is formed between the second protective cover (2321) and the second elastic diaphragm (231).

3. The voltage stabilizing device according to claim 2, characterized in that, The first pressure regulating assembly (222) further includes a first gas storage tank (2222) connected to the first pressure chamber, and the second pressure regulating assembly (232) further includes a second gas storage tank (2322) connected to the second pressure chamber. The buffer pressure chamber is connected to a buffer gas storage tank (14).

4. The voltage stabilizing device according to claim 1, characterized in that, The first pressure stabilizing mechanism (1) further includes a connector assembly (13) with one end connected to the outlet of the delivery pump (3) and the other end connected to the delivery pipe (4). The two ends of the delivery hose assembly (11) and the outer sleeve (12) are respectively fixed to the connector assembly (13). The two ends of the delivery hose assembly (11) and the outer sleeve (12) are sealed on the connector assembly (13).

5. The voltage stabilizing device according to claim 4, characterized in that, The connector assembly (13) includes a connector body (131), a connecting limiting boss (132), and a flange (133). The inner hose (111) is sealed and fitted at one end of the connector body (131). The other end of the connector body (131) is connected to the outlet of the delivery pump (3) / the delivery pipeline (4). The connecting limiting boss (132) is fixed at the middle position of the connector body (131). The limiting sleeve (112) is clamped on the connecting limiting boss (132). The end of the outer sleeve (12) is provided with a radially inward limiting ring (121). The outer hose (113) is clamped between the connecting limiting boss (132) and the limiting ring (121). The flange (133), the outer sleeve (12), and the connecting limiting boss (132) are all sealed and fixed.

6. The voltage stabilizing device according to claim 5, characterized in that, The connection between the inner hose (111) and the connector tube (131) is surrounded by a hose clamp (1111). A limiting step (1321) is provided on one side of the connecting limiting boss (132). The limiting sleeve (112) is clamped on the limiting step (1321). The other side of the connecting limiting boss (132) is sealed and fixed to the flange (133).

7. The voltage stabilizing device according to claim 5, characterized in that, The outer flexible tube (113) has radially outwardly expanding locking flanges (1131) at both ends. The limiting ring (121) is pressed against the outer wall of the outer flexible tube (113). The locking flange (1131) is clamped between the limiting ring (121) and the flange (133). The locking flange (1131) has a sealing flange (1132) on the side near the flange (133). The flange (133) has a sealing groove that matches the sealing flange (1132).

8. The voltage stabilizing device according to any one of claims 1-7, characterized in that, The medium flow channel is a plurality of first liquid passage holes (1121) evenly distributed on the limiting sleeve (112).

9. The voltage stabilizing device according to any one of claims 1-7, characterized in that, The medium flow channel is a plurality of second liquid passage holes (1122) provided at both ends of the limiting sleeve (112).

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