Electric diaphragm pump capable of building pressure

Abstract

The invention discloses an electric diaphragm pump capable of building pressure. The electric diaphragm pump comprises a pump body, a pump cavity, an eccentric wheel, a diaphragm piece, a one-way ball valve, a left heat preservation shell, a right heat preservation shell, a butt joint assembly, a main channel, a heat preservation inner cavity and an inner assembling assembly. The heat preservation shell has the following advantages and effects that the heat preservation shell is formed by assembling the left heat preservation shell and the right heat preservation shell after being in butt joint, the heat preservation shell is different from a complex whole shell structure, and assembling can be rapidly completed only by aligning and fixing the two half shells in the assembling process; through the arrangement of the butt joint assembly, butt joint of the left heat preservation shell and the right heat preservation shell can be achieved, and mutual communication of the two main channels and the two heat preservation inner cavities can also be achieved; and through the arrangement of the inner assembling assembly, the left heat preservation shell and the right heat preservation shell can be butted and automatically assembled, so that the assembling efficiency and convenience are improved.

Description

Technical Field

[0001] The invention relates to a pump, in particular to an electric diaphragm pump capable of holding pressure. Background Art

[0002] Diaphragm pumps have been widely used in various fluid transportation applications since the mid-20th century. With their superior self-priming ability, strong corrosion resistance and adaptability, they have become indispensable equipment in many industries such as chemical, pharmaceutical, food, and environmental protection. However, although diaphragm pumps perform well in many applications, their use in low temperature or cold environments has significant limitations.

[0003] In cold environments, the liquid inside the diaphragm pump is prone to condensation and freezing due to low temperatures, which can reduce the pump's efficiency, interrupt flow, and even cause equipment damage. In addition, low temperatures can also have an adverse effect on the performance and strength of the pump material, thereby affecting the pump's service life. This phenomenon not only limits the application scope of diaphragm pumps, but also brings many challenges to industries that need to transport liquids in cold environments.

[0004] In the prior art, the insulation design method for diaphragm pumps is relatively simple, usually using insulation materials for single insulation treatment. However, in practical applications, it is unable to effectively solve the problem of liquid condensation at low temperatures, mainly due to the following reasons: 1. Insufficient insulation effect: Traditional insulation materials cannot provide effective insulation at extremely low temperatures, resulting in continuous heat loss and failure to keep the liquid inside the pump within an appropriate range.

[0005] 2. Complex maintenance and installation: Existing insulation structures are often complex in design, and the maintenance and installation process is cumbersome, which increases labor costs and the overall complexity of the system.

[0006] 3. Deformation and aging: Other insulation materials are prone to mechanical performance degradation, aging, deformation and other problems in low temperature environments, affecting the sealing performance and service life of the pump.

[0007] 4. Production cost issue: The materials and processes used in composite insulation structures are relatively expensive, which significantly increases the production cost of the product and reduces market competitiveness.

[0008] In order to solve the above problems, it is urgent to develop a new type of diaphragm pump insulation design that can effectively maintain the temperature of the liquid in the pump in a cold environment and ensure the normal operation of the pump. Innovating the insulation structure and designing an insulation structure assembled with two insulation half shells can achieve simple and convenient assembly and provide more effective insulation effect, which is a direction that has not been fully explored in current technology. Summary of the invention

[0009] The object of the present invention is to provide a pressure-holding electric diaphragm pump to solve the problems raised in the background technology.

[0010] The above technical objectives of the present invention are achieved through the following technical solutions: A pressure-holding electric diaphragm pump comprises a pump body, wherein the pump body has a pump chamber, wherein an eccentric wheel, two diaphragms and four one-way ball valves are arranged in the pump chamber; the eccentric wheel can rotate under the drive of an external motor, driving the two diaphragms to perform left-right reciprocating motion, and the left-right reciprocating motion of the two diaphragms causes the volume in the pump chamber to change regularly, forcing the four one-way ball valves to open and close alternately, so that the pump body maintains normal operation; An insulation shell is coated outside the pump body, and the inner wall of the insulation shell can contact the pump body to realize heat transfer; the insulation shell is assembled by docking a left insulation shell and a right insulation shell, and insulation inner cavities are provided in the left insulation shell and the right insulation shell; the upper and lower ends of the left insulation shell and the right insulation shell facing each other are provided with docking components that allow the two to dock; the two docking components are provided with main channels connected to the outside world, and when the left insulation shell and the right insulation shell are docked, the warm air can be sent to the two insulation inner cavities through one of the main channels, and the warm air that has lost its insulation effect can be drawn out from the two insulation inner cavities through the other main channel; Both of the docking components are also provided with an inner assembly component which allows the left insulation shell and the right insulation shell to be automatically assembled after the left insulation shell and the right insulation shell are docked.

[0011] A further configuration is that: the inner assembly component maintains a state of assembling the left insulation shell and the right insulation shell under normal circumstances; the inner assembly component is a pneumatic control structure, and the inner assembly component maintains a state of being separated from the corresponding main channel under normal circumstances; when it is necessary to release the assembly state of the left insulation shell and the right insulation shell by the inner assembly component, warm air can be introduced from the main channel into the inner assembly component, so that the inner assembly component releases the assembly state of the left insulation shell and the right insulation shell.

[0012] Further configuration is: the docking assembly is composed of a docking seat arranged on the left side of the right insulation shell and a docking slot arranged on the right side of the left insulation shell, the docking seat is adapted to the docking slot, and the upper and lower ends of the left side of the docking seat are both processed with arc surfaces; The main channel is composed of a vertical inner channel and a horizontal inner channel which are interconnected. The upper end of the vertical inner channel is connected to the upper wall of the docking seat, and the lower end is connected to the non-port position of the horizontal inner channel. The two ports of the horizontal inner channel are respectively connected to the left and right walls of the docking seat; the right side of the left insulation shell and the left side of the right insulation shell are respectively provided with guide ports connected to the insulation inner cavities therein. When the left insulation shell and the right insulation shell are docked, the two ports of the horizontal inner channel are respectively connected to the guide ports in the left insulation shell and the right insulation shell.

[0013] Further configuration is: the inner assembly component includes a vertical assembly inner hole opened in the docking seat, two assembly top blocks that can be partially moved out of the upper and lower ends of the assembly inner hole are movably arranged in the assembly inner hole, and the assembly inner hole is provided with a first elastic member that can provide kinetic energy for the two assembly top blocks to move outward respectively; the upper and lower inner walls of the docking groove are both provided with assembly concave surfaces, and the two assembly top blocks can be respectively moved outward and pushed into the two assembly concave surfaces to achieve the purpose of assembling the left insulation shell and the right insulation shell; The left ends of the outer sides of the two assembly top blocks are both processed with arc surfaces, so that the two assembly top blocks can be squeezed and automatically hidden in the assembly inner holes during the process of extending into the docking grooves.

[0014] The further arrangement is: a vertical connecting plate is also arranged in the assembly inner hole, the assembly top block is fixed to the right end of the vertical connecting plate by screws, and a hidden push block located on the inner side of the assembly top block is also fixedly arranged on the right end of the vertical connecting plate by screws, and a first inclined guide surface is provided on the outer side of the hidden push block; two receiving inner cavities located on the right side of the assembly inner hole are arranged in the docking seat, and horizontal force arms are arranged in the two receiving inner cavities, and the two horizontal force arms are limited in the corresponding receiving inner cavities and can only move in the horizontal direction, and second inclined guide surfaces with the same slope as the first inclined guide surfaces on the corresponding hidden push blocks are provided on the left sides of the two horizontal force arms, and when the two horizontal force arms are subjected to force and move to the left, they can respectively drive the two assembly top blocks to move inward and hide in the assembly inner hole, thereby releasing the assembly state of the left insulation shell and the right insulation shell.

[0015] Further configuration is: a passive push block is fixedly arranged on the inner side of the horizontal force arm, the horizontal force arm and the passive push block are respectively attached to the outer wall and the inner wall inside the assembly inner hole, a second elastic member is squeezed between the passive push block and the left wall of the receiving inner cavity, the second elastic member provides kinetic energy for the passive push block to always move rightward; a soft cushion is fixedly arranged on the right end of the horizontal force arm and the passive push block to reduce the impact force, the receiving inner cavity has an air connection hole connected thereto, the air connection hole is used to receive the warm air introduced from the main channel, and as the warm air is continuously introduced, kinetic energy is generated to push the horizontal force arm to move leftward.

[0016] Further configuration is: an internal main hole connecting the two air holes is provided in the docking seat, and the internal main hole is connected to the vertical inner channel; an internal control component for controlling the connection or cutoff between the internal main hole and the vertical inner channel is provided in the docking seat; The inner control assembly includes a vertical control main hole and a control concave surface opened in the docking seat, the control concave surface and the control main hole are respectively located inside and outside the inner main hole, a sealing control shaft and a third elastic member are arranged in the control main hole, the sealing control shaft can move vertically in the control main hole, and the third elastic member provides the sealing control shaft with kinetic energy to always move outward, so that the sealing control shaft can be pushed outward into the control concave surface to maintain the partition between the inner main hole and the vertical inner channel; A force block is fixedly arranged on the surface of the sealing control shaft, and the force block extends to the surface of the docking seat. The surface of the docking seat is provided with a moving area for the force block to move vertically. The internal main hole and the vertical inner channel can be connected by applying force to pull the force block outward.

[0017] Further configuration is: the docking seat is composed of a left sealing block, a middle sleeve block and a fixing seat arranged from left to right, the fixing seat is fixed on the right insulation shell, and the transverse central axis positions of the left sealing block, the middle sleeve block and the fixing seat are fixed by a transverse bolt; the assembly inner hole is formed between the left sealing block and the middle sleeve block, an extension block is fixedly arranged at the right end of the left sealing block, and vertical interlayer areas are respectively formed between the extension block and the two vertical connecting plates, and the first elastic member includes two inner springs respectively located in the two interlayer areas; An inner filling plate is fixedly arranged at the right end of the middle sleeve block by screws, and two receiving inner cavities are formed between the inner filling plate and the middle sleeve block.

[0018] A further configuration is that a detachable inner sealing plate is provided inside the fixing seat, the control main hole is formed between the inner sealing plate and the inside of the fixing seat, and the inner sealing plate and the fixing seat are fixed by screws.

[0019] The beneficial effects of the present invention are: 1. In the present invention, the insulation shell is assembled by docking the left insulation shell and the right insulation shell. Unlike the complex whole shell structure, the assembly can be completed quickly by aligning the two half shells and fixing them. This method reduces the complexity of operation by reducing the required tools and time. At the same time, it can also use modular production methods to allow different types of pumps to use the same half-shell mold. This flexibility can reduce design and manufacturing costs and improve production efficiency. The setting of the docking component can not only realize the docking of the left insulation shell and the right insulation shell, but also realize the interconnection between the two main channels and the two insulation cavities; the heating can be sent into the two insulation cavities through one of the main channels, and the heating that has lost its insulation effect can be extracted from the two insulation cavities through the other main channel. The two main channels can realize the control of heating delivery and extraction. The setting of the internal assembly component can be completed by docking the left insulation shell and the right insulation shell, allowing the two to be automatically assembled, thereby improving assembly efficiency and convenience.

[0020] 2. In the present invention, the inner assembly component will cut off the connection between the two main channels and itself, preventing the warm air in the main channel from entering the inner assembly component under normal conditions; when it is necessary to release the assembly state of the left insulation shell and the right insulation shell by the inner assembly component, since the inner assembly component is a pneumatic control structure, it is only necessary to introduce the warm air from the main channel into the inner assembly component to complete the release of the assembly state of the left insulation shell and the right insulation shell.

[0021] 3. The docking assembly is made up of a docking seat and a docking groove. The upper and lower ends of the left side of the docking seat are both curved, which can effectively compensate for slight deviations during docking. The vertical inner channel is used for external heating to enter, and the supplied heating will then pass through the two ports of the horizontal inner channel and enter the two insulation cavities from the guide ports, allowing continuous supply of heating.

[0022] 4. In the present invention, the two assembly top blocks in the inner assembly component will move in the assembly inner hole. The setting of the first elastic member can provide kinetic energy for the two assembly top blocks to move outward, so that the two assembly top blocks can remain inserted into the corresponding assembly concave surfaces under normal conditions, so that the left insulation shell and the right insulation shell are in a stable assembly state; the arc surface setting on the outer side of the assembly top block allows the assembly top block to be squeezed and automatically hidden in the assembly inner hole during the process of extending into the docking groove.

[0023] 5. In the present invention, the vertical connecting plate is used to fix the assembly top block and the hidden push block. The second inclined guide surface on the horizontal force arm will contact the first inclined guide surface on the hidden push block. Based on the contact between the two, when the horizontal force arm is subjected to force and moves to the left, it can drive the two assembly top blocks to move inward and hide in the assembly inner hole, thereby realizing linkage.

[0024] 6. In the present invention, the horizontal force arm and the passive push block are respectively in contact with the outer wall and the inner wall inside the assembly inner hole, which can ensure the sealing and provide the basic condition for the subsequent introduction of heating to push the horizontal force arm to move left; the second elastic member can ensure that the passive push block moves right under normal conditions, thereby avoiding obstruction of the corresponding assembly top block from moving outward; the soft cushion can weaken the impact force; the setting of the air receiving hole can receive the heating introduced from the main channel.

[0025] 7. In the present invention, the setting of the internal main hole can connect the two air holes, and the internal control component is used to control the connection or cutoff between the internal main hole and the vertical inner channel; the sealing control shaft limit is located in the control main hole, and the third elastic member provides kinetic energy for the passive push block to always move outward, so that the sealing control block can be pushed outward into the control concave surface to maintain the partition between the internal main hole and the vertical inner channel; the setting of the force block enables the operator to apply force from the outside to control the downward movement of the sealing control shaft to open the connection between the internal main hole and the vertical inner channel.

[0026] 8. In the present invention, the docking seat is configured as a detachable structure to facilitate the replacement of the first elastic member and the second elastic member inside. Since the first elastic member and the second elastic member may suffer from elastic fatigue and damage during actual use, it is necessary to design a detachable structure to facilitate the replacement of the first elastic member and the second elastic member. The left sealing block and the middle sleeve block fixing seat only need one bolt to fix, which is convenient for fixing; the extension block can reduce the impact force; the inner filling block and the middle sleeve block are fixed by screws to facilitate the assembly of the second elastic member in the receiving cavity.

[0027] 9. In the present invention, the inner sealing plate and the fixing seat are fixed by screws to facilitate the removal and replacement of the third elastic member. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a structural schematic diagram of an embodiment; Figure 2 for Figure 1 Enlarged view of part A in the middle; Figure 3 for Figure 2 Enlarged view of middle part B; Figure 4 for Figure 1 Enlarged view of part C in the middle.

[0029] In the figure: 11, pump body; 12, eccentric wheel; 13, diaphragm; 14, one-way ball valve; 21, left insulation shell; 22, right insulation shell; 23, insulation inner cavity; 311, left sealing block; 312, middle sleeve block; 313, fixed seat; 314, bolt; 32, docking groove; 321, assembly concave surface; 41, vertical inner channel; 42, horizontal inner channel; 51, assembly inner hole; 52, assembly top block; 53, inner spring; 54, vertical connecting plate; 55, hidden push block ; 551, first inclined guide surface; 61, receiving inner cavity; 62, horizontal force arm; 621, second inclined guide surface; 63, passive push block; 64, second elastic member; 65, cushion; 66, air connection hole; 67, internal main hole; 71, control main hole; 72, control concave surface; 73, sealing control shaft; 731, gasket; 74, third elastic member; 75, force block; 76, moving area; 81, extension block; 82, interlayer area; 83, inner filling plate; 91, inner sealing plate. DETAILED DESCRIPTION

[0030] The present invention is further described in detail below in conjunction with the accompanying drawings.

[0031] As attached Figures 1 to 4 As shown; This embodiment discloses a pressure-holding electric diaphragm pump, including a pump body 11, a pump cavity in the pump body 11, an eccentric wheel 12, two diaphragms 13 and four one-way ball valves 14 in the pump cavity; the eccentric wheel 12 can rotate under the drive of an external motor, driving the two diaphragms 13 to reciprocate left and right, and the reciprocating motion of the two diaphragms 13 causes the volume in the pump cavity to change regularly, forcing the four one-way ball valves 14 to open and close alternately, so that the pump body 11 maintains normal operation. The above is a conventional structure of a diaphragm pump, which is a prior art and will not be elaborated here. The pump body 11 is covered with an insulation shell, and the inner wall of the insulation shell can contact the pump body 11 to realize heat transfer; the insulation shell is assembled by docking the left insulation shell 21 and the right insulation shell 22, and the left insulation shell 21 and the right insulation shell 22 are both provided with insulation inner cavities 23; the upper and lower ends of the left insulation shell 21 and the right insulation shell 22 facing each other are both provided with docking components that allow the two to dock; the two docking components are both provided with main channels connected to the outside world, and when the left insulation shell 21 and the right insulation shell 22 are docked, the warm air can be sent to the two insulation inner cavities 23 through one of the main channels, and the warm air that has lost its insulation effect can be drawn out from the two insulation inner cavities 23 through the other main channel; Both docking components are also provided with an inner assembly component for automatically assembling the left insulation shell 21 and the right insulation shell 22 after the docking is completed.

[0032] Among them, the inner assembly component maintains the state of assembling the left insulation shell 21 and the right insulation shell 22 under normal circumstances; the inner assembly component is a pneumatic control structure, and the inner assembly component maintains a state of being separated from the corresponding main road under normal circumstances; when it is necessary to release the assembly state of the left insulation shell 21 and the right insulation shell 22 by the inner assembly component, heating can be introduced from the main road into the inner assembly component, so that the inner assembly component releases the assembly state of the left insulation shell 21 and the right insulation shell 22.

[0033] Among them, the docking assembly is composed of a docking seat arranged on the left side of the right insulation shell 22 and a docking groove 32 arranged on the right side of the left insulation shell 21, the docking seat is adapted to the docking groove 32, and the upper and lower ends of the left side of the docking seat are both processed with arc surfaces; The main channel is composed of a vertical inner channel 41 and a horizontal inner channel 42 which are interconnected. The upper end of the vertical inner channel 41 is connected to the upper wall of the docking seat, and the lower end is connected to the non-port position of the horizontal inner channel 42. The two ports of the horizontal inner channel 42 are respectively connected to the left and right walls of the docking seat; the right side of the left insulation shell 21 and the left side of the right insulation shell 22 are respectively provided with guide ports connected to the insulation inner cavity 23 therein. When the left insulation shell 21 and the right insulation shell 22 are docked, the two ports of the horizontal inner channel 42 are respectively connected to the guide ports in the left insulation shell 21 and the right insulation shell 22.

[0034] Among them, the inner assembly component includes a vertical assembly inner hole 51 opened in the docking seat, and two assembly top blocks 52 that can be partially moved out of the upper and lower ends of the assembly inner hole 51 are movably arranged in the assembly inner hole 51, and the assembly inner hole 51 is provided with a first elastic member that can provide kinetic energy for the two assembly top blocks 52 to move outward respectively; the upper and lower inner walls of the docking groove 32 are both provided with assembly concave surfaces 321, and the two assembly top blocks 52 can be moved outward and pushed into the two assembly concave surfaces 321 respectively, so as to achieve the purpose of assembling the left insulation shell 21 and the right insulation shell 22; The left ends of the outer sides of the two assembly top blocks 52 are both processed with arc surfaces, so that the two assembly top blocks 52 can be squeezed and automatically hidden in the assembly inner hole 51 during the process of extending into the docking groove 32 .

[0035] Among them, a vertical connecting plate 54 is also provided in the assembly inner hole 51, and the assembly top block 52 is fixed to the right end of the vertical connecting plate 54 by screws. A hidden push block 55 located on the inner side of the assembly top block 52 is also fixed at the right end of the vertical connecting plate 54 by screws, and a first inclined guide surface 551 is provided on the outer side of the hidden push block 55; two receiving cavities 61 located on the right side of the assembly inner hole 51 are provided in the docking seat, and horizontal force arms 62 are provided in the two receiving cavities 61. The two horizontal force arms 62 are limited in the corresponding receiving cavities 61 and can only move in the horizontal direction. The left sides of the two horizontal force arms 62 are provided with second inclined guide surfaces 621 with the same slope as the first inclined guide surfaces 551 on the corresponding hidden push blocks 55. When the two horizontal force arms 62 are subjected to force and move to the left, they can respectively drive the two assembly top blocks 52 to move inward and hide in the assembly inner hole 51, thereby releasing the assembly state of the left insulation shell 21 and the right insulation shell 22.

[0036] Among them, a passive push block 63 is fixedly provided on the inner side of the horizontal force arm 62, and the horizontal force arm 62 and the passive push block 63 are respectively attached to the outer wall and the inner wall inside the assembly inner hole 51, and a second elastic member 64 is squeezed between the passive push block 63 and the left wall of the receiving inner cavity 61, and the second elastic member 64 provides kinetic energy for the passive push block 63 to always move to the right; a soft cushion 65 is fixedly provided on the right end of the horizontal force arm 62 and the passive push block 63 to reduce the impact force, and the right end of the receiving inner cavity 61 has an air receiving hole 66 connected thereto, and the air receiving hole 66 is used to receive the warm air introduced from the main channel. As the warm air is continuously introduced, kinetic energy is generated to push the horizontal force arm 62 to move left.

[0037] It should be added that the cushion 65 is made of felt.

[0038] Among them, an internal main hole 67 is opened in the docking seat to connect the two air holes 66, and the internal main hole 67 is connected to the vertical inner channel 41; an internal control component for controlling the connection or cutoff between the internal main hole 67 and the vertical inner channel 41 is provided in the docking seat; The inner control assembly includes a vertical control main hole 71 and a control concave surface 72 opened in the docking seat. The control concave surface 72 and the control main hole 71 are respectively located inside and outside the inner main hole 67. A sealing control shaft 73 and a third elastic member 74 are arranged in the control main hole 71. The sealing control shaft 73 can move vertically in the control main hole 71. The third elastic member 74 provides the sealing control shaft 73 with kinetic energy to always move outward, so that the sealing control shaft 73 can be pushed outward into the control concave surface 72 to maintain the partition between the inner main hole 67 and the vertical inner channel 41. A force block 75 is fixedly arranged on the surface of the sealing control shaft 73. The force block 75 extends to the surface of the docking seat. The surface of the docking seat is provided with a moving area 76 for the force block 75 to move vertically. By applying force to pull the force block 75 outward, the internal main hole 67 and the vertical inner channel 41 can be connected.

[0039] It should be added that a gasket 731 is fixedly provided on the outer side of the sealing control shaft 73 , and the gasket 731 is also made of felt.

[0040] Among them, the docking seat is composed of a left sealing block 311, a middle sleeve block 312 and a fixed seat 313 arranged from left to right, and the fixed seat 313 is fixed on the right insulation shell 22. The horizontal central axis positions of the left sealing block 311, the middle sleeve block 312 and the fixed seat 313 are fixed by a horizontal bolt 314; the assembly inner hole 51 is formed between the left sealing block 311 and the middle sleeve block 312, and an extension block 81 is fixedly arranged at the right end of the left sealing block 311. Vertical interlayer areas 82 are respectively formed between the extension block 81 and the two vertical connecting plates 54, and the first elastic member includes two inner springs 53 respectively located in the two interlayer areas 82; An inner filling plate 83 is fixed to the right end of the middle sleeve block 312 by screws, and two receiving inner cavities 61 are formed between the inner filling plate 83 and the middle sleeve block 312 .

[0041] Among them, a detachable inner sealing plate 91 is provided inside the fixing seat 313, and the control main hole 71 is formed between the inner sealing plate 91 and the inside of the fixing seat 313, and the inner sealing plate 91 and the fixing seat 313 are fixed by screws.

[0042] Initial state: 1. The two horizontal force-applying arms 62 respectively keep moving rightward under the kinetic energy provided by the two second elastic members 64 to avoid hindering the normal outward movement of the two assembly top blocks 52 .

[0043] 2. The two assembly top blocks 52 respectively keep moving outward under the kinetic energy provided by the two inner springs 53, and the two assembly top blocks 52 can partially extend out of the assembly inner hole 51; the hidden push block 55 can collide with the horizontal force arm 62 to limit the assembly top block 52.

[0044] 3. The sealing control shaft 73 keeps moving outward under the kinetic energy provided by the third elastic member 74 , and then pushes into the control concave surface 72 , maintaining the separation between the internal main hole 67 and the vertical inner channel 41 , so that warm air will not enter the internal main hole 67 .

[0045] Assembly principle of the left insulation shell 21 and the right insulation shell 22: 1. The left insulation shell 21 and the right insulation shell 22 are respectively docked against the left and right sides of the pump body 11, and the docking seat on the right insulation shell 22 will extend into the docking groove 32 of the left insulation shell 21 to complete the docking.

[0046] 2. When the docking seat extends into the docking groove 32, the inner and outer side walls of the docking groove 32 will contact the arc surface on the assembly top block 52 respectively, and then continuously squeeze the assembly top block 52 to move inward, press the assembly top block 52 into the assembly inner hole 51, so that the docking seat can smoothly extend into the bottom of the docking groove 32 to complete the docking.

[0047] 3. When the docking seat is smoothly inserted into the bottom of the docking groove 32, the two assembly top blocks 52 can be moved outwards and pushed into the two assembly concave surfaces 321 respectively under the kinetic energy provided by the inner spring 53, so as to achieve the purpose of assembling the left insulation shell 21 and the right insulation shell 22.

[0048] The assembly process has the advantages of being simple and quick; during assembly, it is only necessary to complete the docking of the docking seat and the docking groove 32 .

[0049] Heating supply principle: 1. The upper vertical inner channel 41 is connected to the external heating supply device, and the two are automatically controlled by an electric control valve; the lower vertical inner channel 41 is connected to the external air pump, and the two are also automatically controlled by an electric control valve.

[0050] 2. After the left insulation shell 21 and the right insulation shell 22 are assembled, the heating air is supplied to the upper vertical inner channel 41, and the supplied heating air passes through the two ports of the corresponding horizontal inner channel 42 and enters the two insulation inner chambers 23 from the guide ports, so that the heating air can be continuously supplied. After a certain period of time, the heating air that has lost its insulation effect is extracted through the lower vertical inner channel 41.

[0051] Principle of disassembling the left insulation shell 21 and the right insulation shell 22: 1. The operator applies force to pull the upper force block 75 inward. As the force block 75 moves inward, the internal main hole 67 and the vertical inner channel 41 are connected, and then the warm air is introduced into the internal main hole 67. Then, the warm air is introduced into the two air receiving holes 66. As the warm air is continuously introduced, kinetic energy is generated to push the corresponding horizontal force arm 62 to move left. When the two horizontal force arms 62 move left, they can respectively drive the two assembly top blocks 52 to move inward and hide in the assembly inner hole 51, thereby releasing the assembly state of the left insulation shell 21 and the right insulation shell 22.

[0052] 2. After releasing the upper force block 75 , the sealing control shaft 73 moves outward again under the kinetic energy provided by the third elastic member 74 , and then pushes into the control concave surface 72 to maintain the separation between the internal main hole 67 and the vertical inner channel 41 .

[0053] 3. Due to the partition between the internal main hole 67 and the vertical inner channel 41, the warm air introduced into the two air holes 66 will not leak, and the docking seat and docking groove 32 above the left insulation shell 21 and the right insulation shell 22 will always be in a disassembled state; the operator operates the force block 75 below in the same way, so that the docking seat and docking groove 32 below the left insulation shell 21 and the right insulation shell 22 can also be in a disassembled state, and finally, it is only necessary to disassemble the left insulation shell 21 and the right insulation shell 22.

[0054] 4. After the left heat-insulating shell 21 and the right heat-insulating shell 22 are disassembled, the two force blocks 75 are pulled inward again to exhaust air.

[0055] In this embodiment, the second elastic member 64 and the third elastic member 74 are both springs.

[0056] 1. When replacing the inner spring 53, unscrew the bolt 314, then disassemble the left sealing block 311 and the middle sleeve block 312, and replace the inner spring 53.

[0057] 2. When replacing the second elastic member 64 , unscrew the bolt 314 , unscrew the screw on the inner filling plate 83 , and then disassemble the inner filling plate 83 to replace the second elastic member 64 .

[0058] 3. When replacing the third elastic member 74 , it is only necessary to unscrew the screws on the inner sealing plate 91 , and then disassemble the inner sealing plate 91 to replace the third elastic member 74 .

[0059] This specific embodiment is merely an explanation of the present invention and is not a limitation of the present invention. After reading this specification, those skilled in the art may make non-creative modifications to the present embodiment as needed. However, as long as they are within the scope of the claims of the present invention, they are protected by the patent law.

Claims

1. A pressure-holding electric diaphragm pump, comprising a pump body (11), wherein the pump body (11) has a pump chamber, wherein an eccentric wheel (12), two diaphragms (13) and four one-way ball valves (14) are arranged in the pump chamber; wherein the eccentric wheel (12) can rotate under the drive of an external motor, driving the two diaphragms (13) to perform left-right reciprocating motion, wherein the left-right reciprocating motion of the two diaphragms (13) causes the volume in the pump chamber to change regularly, forcing the four one-way ball valves (14) to open and close alternately, so that the pump body (11) maintains normal operation; wherein the characteristics are: The pump body (11) is coated with a heat-insulating outer shell, and the inner wall of the heat-insulating outer shell can contact the pump body (11) to achieve heat transfer; the heat-insulating outer shell is assembled by docking a left heat-insulating shell (21) and a right heat-insulating shell (22), and the left heat-insulating shell (21) and the right heat-insulating shell (22) are both provided with heat-insulating inner cavities (23); the upper and lower ends of the left heat-insulating shell (21) and the right heat-insulating shell (22) facing each other are both provided with docking components that allow the two to dock; the two docking components are both provided with main channels that communicate with the outside world, and when the left heat-insulating shell (21) and the right heat-insulating shell (22) are docked, the warm air can be sent into the two heat-insulating inner cavities (23) through one of the main channels, and the warm air that has lost its heat-insulating effect can be drawn out of the two heat-insulating inner cavities (23) through the other main channel; Both of the docking components are also provided with an inner assembly component which allows the left insulation shell (21) and the right insulation shell (22) to be automatically assembled after the docking is completed.

2. The pressure-holding electric diaphragm pump according to claim 1, characterized in that: The inner assembly component maintains the state of assembling the left insulation shell (21) and the right insulation shell (22) under normal conditions; the inner assembly component is a pneumatic control structure, and the inner assembly component maintains a state of being separated from the corresponding main channel under normal conditions; when it is necessary to release the assembly state of the left insulation shell (21) and the right insulation shell (22) by the inner assembly component, warm air can be introduced from the main channel into the inner assembly component, so that the inner assembly component releases the assembly state of the left insulation shell (21) and the right insulation shell (22).

3. The pressure-holding electric diaphragm pump according to claim 2, characterized in that: The docking assembly is composed of a docking seat arranged on the left side of the right insulation shell (22) and a docking groove (32) arranged on the right side of the left insulation shell (21), the docking seat is adapted to the docking groove (32), and the upper and lower ends of the left side of the docking seat are both processed with arc surfaces; The main channel is composed of a vertical inner channel (41) and a horizontal inner channel (42) which are interconnected. The upper end of the vertical inner channel (41) is connected to the upper wall of the docking seat, and the lower end is connected to the non-port position of the horizontal inner channel (42). The two ports of the horizontal inner channel (42) are respectively connected to the left and right walls of the docking seat; the right side of the left insulation shell (21) and the left side of the right insulation shell (22) are respectively provided with guide ports connected to the insulation inner cavity (23) therein. When the left insulation shell (21) and the right insulation shell (22) are docked, the two ports of the horizontal inner channel (42) are respectively connected to the guide ports in the left insulation shell (21) and the right insulation shell (22).

4. The pressure-holding electric diaphragm pump according to claim 3, characterized in that: The inner assembly component comprises a vertical assembly inner hole (51) provided in the docking seat, two assembly top blocks (52) which can be partially moved out of the upper and lower ends of the assembly inner hole (51) are movably provided in the assembly inner hole (51), and the first elastic member which can provide kinetic energy for the two assembly top blocks (52) to move outward is provided in the assembly inner hole (51); the upper and lower inner walls of the docking groove (32) are provided with assembly concave surfaces (321), and the two assembly top blocks (52) can be moved outward and pushed into the two assembly concave surfaces (321) respectively, so as to achieve the purpose of assembling the left insulation shell (21) and the right insulation shell (22); The left ends of the outer sides of the two assembly top blocks (52) are both processed with arc surfaces, so that the two assembly top blocks (52) can be squeezed and automatically hidden in the assembly inner hole (51) during the process of extending into the docking groove (32).

5. The pressure-holding electric diaphragm pump according to claim 4, characterized in that: The assembly inner hole (51) is also provided with a vertical connecting plate (54), the assembly top block (52) is fixed to the right end of the vertical connecting plate (54) by screws, and the right end of the vertical connecting plate (54) is also fixed with a hidden push block (55) located on the inner side of the assembly top block (52) by screws, and the outer side of the hidden push block (55) is provided with a first inclined guide surface (551); the docking seat is provided with two receiving inner cavities (61) located on the right side of the assembly inner hole (51), and the two receiving inner cavities (61) are both provided with horizontal force arms (62 ), the two horizontal force-applying arms (62) are restricted in the corresponding receiving inner cavity (61) and can only move in the horizontal direction, and the left sides of the two horizontal force-applying arms (62) are provided with second inclined guide surfaces (621) having the same slope as the first inclined guide surfaces (551) on the corresponding hidden push blocks (55). When the two horizontal force-applying arms (62) are subjected to force and move to the left, they can respectively drive the two assembly top blocks (52) to move inward and be hidden in the assembly inner hole (51), thereby releasing the assembly state of the left insulation shell (21) and the right insulation shell (22).

6. The pressure-holding electric diaphragm pump according to claim 5, characterized in that: A passive push block (63) is fixedly arranged on the inner side of the horizontal force arm (62); the horizontal force arm (62) and the passive push block (63) are respectively attached to the outer wall and the inner wall inside the assembly inner hole (51); a second elastic member (64) is squeezed between the passive push block (63) and the left wall of the receiving inner cavity (61); the second elastic member (64) provides kinetic energy for the passive push block (63) to always move rightward; a soft cushion (65) is fixedly arranged on the right end of the horizontal force arm (62) and the passive push block (63) to reduce the impact force; the right end of the receiving inner cavity (61) has an air receiving hole (66) connected thereto; the air receiving hole (66) is used to receive the warm air introduced from the main channel; as the warm air is continuously introduced, kinetic energy is generated to push the horizontal force arm (62) to move leftward.

7. The pressure-holding electric diaphragm pump according to claim 6, characterized in that: The docking seat is provided with an internal main hole (67) for connecting the two air holes (66), and the internal main hole (67) is connected to the vertical inner channel (41); the docking seat is provided with an internal control component for controlling the connection or cutoff between the internal main hole (67) and the vertical inner channel (41); The inner control component comprises a vertical control main hole (71) and a control concave surface (72) opened in the docking seat, wherein the control concave surface (72) and the control main hole (71) are respectively located on the inner and outer sides of the inner main hole (67), and a sealing control shaft (73) and a third elastic member (74) are arranged in the control main hole (71), wherein the sealing control shaft (73) can move vertically in the control main hole (71), and the third elastic member (74) provides the sealing control shaft (73) with kinetic energy to always move outward, thereby enabling the sealing control shaft (73) to be pushed outward into the control concave surface (72), thereby maintaining the partition between the inner main hole (67) and the vertical inner channel (41); A force block (75) is fixedly arranged on the surface of the sealing control shaft (73), and the force block (75) extends to the surface of the docking seat. The surface of the docking seat is provided with a moving area (76) for the force block (75) to move in the vertical direction. By applying force to pull the force block (75) outward, the internal main hole (67) and the vertical inner channel (41) can be connected.

8. The pressure-holding electric diaphragm pump according to claim 7, characterized in that: The docking seat is composed of a left sealing block (311), a middle sleeve block (312) and a fixed seat (313) arranged from left to right, the fixed seat (313) is fixed on the right insulation shell (22), and the transverse central axis positions of the left sealing block (311), the middle sleeve block (312) and the fixed seat (313) are fixed by a transverse bolt (314); the assembly inner hole (51) is formed between the left sealing block (311) and the middle sleeve block (312), an extension block (81) is fixedly arranged at the right end of the left sealing block (311), and vertical interlayer areas (82) are respectively formed between the extension block (81) and the two vertical connecting plates (54), and the first elastic member includes two inner springs (53) respectively located in the two interlayer areas (82); An inner filling plate (83) is fixedly provided at the right end of the middle sleeve block (312) by means of screws, and two receiving inner cavities (61) are formed between the inner filling plate (83) and the middle sleeve block (312).

9. The pressure-holding electric diaphragm pump according to claim 8, characterized in that: The fixing seat (313) is detachably provided with an inner sealing plate (91), the control main hole (71) is formed between the inner sealing plate (91) and the inside of the fixing seat (313), and the inner sealing plate (91) and the fixing seat (313) are fixed by screws.

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