TW482876B - Pumps - Google Patents

Abstract

A pump such as a progressive cavity pump, a gear pump or a displacement piston pump (11) comprises a housing (12) defining a working chamber (14) having an inlet (24) and an outlet (24) and a pump displacement member (16) which is relatively movable in the working chamber to displace material worked by the pump through the working chamber from the inlet to the outlet. At least a working surface of a component (16, 54, 58) of the pump which in use is in contact with material being worked in the working chamber is formed of a material such as ultra high molecular weight polyethylene which is rigid at a normal operating temperature of the component but which is fusible at a predetermined temperature greater than the normal operating temperature but no more than about 170 DEG C. Such a component includes the rotor in a progressive cavity pump; at least one of the gears in a gear pump, and the piston crown (44), the valve check balls (54 and 58) and/or the valve seat (52 and 56) in a displacement piston pump.

Description

482876 V. Description of the invention (1) The emulsion of the liquid composition of the present invention is malfunctioning and a hole pump or a gear pump can be used. Explosive, liquid, such as the name of the submerged base with floating absorption, The emulsified pumping of explosive components such as the crystallization of salt is used to pump the explosives with a temperature of 17 (TC or less, plus deflagration or explosion threatening the life loss near the pump. The background is about fruits and especially about emulsified pumped explosives. In particular, the present invention relates to pumps capable of pumping explosives = and its possible ingredients in case of pumping attack in some situations This kind of pump is unsafe. Such pumps include progressive pumps, piston pumps, etc. Bottom-feed emulsions, which contain oxidizable salts, but usually do not have their own emulsions, are base emulsions containing powdered materials. It is explosive in itself, while the emulsion explosive agent is an activated liquid containing a large number of small compressible voids, all of which are contained in the "emulsion components of explosives", such as the base emulsion, mixed with absorption Emulsions and explosives containing other substances, etc. 〃 Private chemical components are commonly used in the daily processing of bulk milk by the staff to make the most dangerous activities. When the temperature in the explosive pump increases, it will be subject to Thermal decomposition, such as from detonation and discoloration, but generally acceptable-a pump with explosive emulsion ingredients can be safely operated when about 5 emulsifier ingredients are heated above this temperature :: Dangerous. This will cause damage to the pump, and will cause damage to the plant and equipment and / or severe personal injury or death = not the explosion of explosive materials outside the explosion of explosive explosives in the pump. Time. 'There are many reasons why the emulsion composition of the fry

Page 6 482876 V. Description of the invention (2) " ----- The accumulated temperature rise, including pumping when there is no output, dry operation and compression of air and air. No output pumping occurs when the flow from the pump is blocked. This blockage can occur in the pump outlet or in the pipeline leading from the pump outlet. When the pumping of the output occurs, the driving energy supplied to the pump will be converted into heat and it will be absorbed by the material enclosed in the pump. Dry operation occurs when no material is fed into the pump while the pump is running. During dry running ', the heat generated by the pumping mechanism will cause the beans to not dissipate heat through the pumped material. The temperature rise caused by it will dissolve any material left in the fruit. The compression of the enveloping air occurs when the air in the pump is repeatedly compressed and expands with continuous pumping action, which usually occurs when there is no output pumping. Extremely high temperatures can occur as a result of this type of pump failure. Various safety mechanisms have been designed to overcome the failure modes of pumps used in explosive properties. An electronic safety system designed based on temperature and pressure sensors has been used on this pump, where the pump's drive mechanism will shut down at a critical temperature, pressure and / or flow rate. Although these safety devices can alleviate these problems when they are in operation, they are expensive to install and maintain and are therefore quickly scrapped or ignored by field operators. Even if they can be operated, such sensors are installed in the pump away from the maximum temperature and / or pressure where they must be reached using a special fault check. Such sensors cannot correctly measure to the appropriate standards.

Page 7 482876 V. Description of the invention (3); ,,;, and, most importantly, the electronic sensor of the safety system has not proved its robustness and therefore is not suitable for many emulsion components used in explosives, Including mobile pumping systems positioned by slides and other underground pumping systems. Underground mines show that it is an extremely difficult and demanding work environment so all equipment must be simple, rugged and reliable. Many more robust mechanical safety systems for pumps have been disclosed, such as shown in EP-A-0255336 and WO 97/47886 and their US equivalent 5,779,460 reference. These overall absolute safety mechanisms include one of the remote-control temperature sensor contacts between a drive shaft and a rotor component used in a primary cavity pump that will melt and terminate the drive relationship when it is above a critical temperature. Such a mechanism relies on the conduction of heat to the temperature-sensing contacts via the rotor member, and the temperature of the material being conveyed or the residual material in the system was extremely important at that time. Similarly, in GB 1 379434, a rotary mechanical seal device includes a stationary and rotatable seal which can be joined to each other. It is recommended that the temperature sensing device be separated from the joint portion and configured to be at a preset temperature. It will soften and cause the seal ring to separate.

In US 5,318,416, it is suggested to provide pressure release in the first-stage acupoint fruit before it reaches a potential critical pressure, and when it reaches this critical pressure, it will cause an explosion of explosives in the system. This can be provided on the stator cylinder to provide kneeling / weakness to the wound '. The fragile part can sense the pressure accumulated on the cylinder. In other proposals, it is suggested that the pressure release of the pump or compressor or the interruption of its drive can melt the plug at critical temperatures. For example, in United States No. 5, 603, 608, a melting plug was soldered at the end of one of the first-stage cavity pump rotors.

Page 8 W876 V. Description of the invention (4) The hydraulic pressure can be released and the drive of the rotor can be interrupted. In the text of M ^ ⑽Μ " \ The plugging device is a compression chamber in a piston compressor which can be melted at a critical temperature to release the pressure from the chamber. In su 98 丨 381, the reduced pressure in the reverse side of one of the plugs of a piston compressor. ^ When the plug melts, a relay is activated which stops the compressor motor. At the same time, the pressure release in the text of AU 17335/20 is used to stop the operation of the compressor and to send a 12 = signal when a melting plug is melted in the air compressor. In US i ' 42 6, 2006, an abutment on a centrifugal pump bearing will act-the release mechanism will then interrupt the power supply to the pump motor. Tip: For the safety system of the 2 1 electronic sensor, the above proposals include melting $ &2; s mountain, point, that is, the melting plug cannot be exposed at a local position in the pump to go faster. The local temperature increased by one aspect of the present invention. Ί7 " In alleviating the lack of these prior art pumps and proposals, according to the present invention, the double borrowing inlet and outlet include a shell which defines a working room with-the working room holds materials in ϋf pieces which are relatively movable in the working room The work of a pump assembly is performed from the inlet to the outlet after the mouth work, and at least one of the materials is used to make contact with the material processed in the working room. It is a normal operation that is greater than normal operation. It is strong at temperature but it is meltable. 'The default temperature is not higher than about 1 70. (At 3 o'clock, use the present invention to work on taxi components) and use at least a component (or two or more such demonstrable materials) when it is heated above a preset temperature

482876 V. Description of the invention (5) The failure mode of the pump of ____ degree will be deformed. At 3 ▲, the processing of the materials in the pump will reduce the accumulation of heat, and it will stop or at least face contact with the pump. Processed materials, as a result of this or each worksheet delaying or reducing the accumulation of any late heat during the failure of the emulsification system in chestnuts. In addition, the work that constitutes the damage of the soluble material can be alleviated, and the entire working surface can alleviate the overheating of the products processed in the previously proposed components of Bao Er Chong when it is localized. Disadvantages of the double plug base When the pump works to the component's working surface, it can at least depend on the type of pump, but it is directly composed of the working ^, its type is related to the way of operation, it is a fixed or can, the liquid component The at least one component can be selected from, for example, a displacement component of a pump. Therefore, parts, pump casings, "flow rate for emulsification and floatation components: when one of them is combined, you can combine any two or more of them; some :: valve assembly, such as the introduction of the field solution idiom" quot The material is sturdy at the normal operating temperature of the piece. This material can perform the work required to order the normal piece in one embodiment. The ancient # η is different in the normal operating temperature. (Usually not coincident with 80. (: and preferably in the range of 30 to 50 ° C). Elasticity at f is preferably the predetermined temperature is substantially lower than the composition of the emulsion at about Seven can be connected to the father's early protection temperature, and more preferably, the predetermined temperature of the soluble material is not less than about 140 C, so that a sufficient safety range can be allowed. Advantageously, the entire structure of this at least one component It is made of fusible material. If only the working surface of this or each component is made of fusible material, it is better to have a minimum thickness of 5 millimeters (mm). Millimeters (mm), and more preferably at least 10 millimeters (mm). Advantageously

Page 10 482876 V. Description of the invention (6) Yes, the other parts of the at least one component which are not made of dazzling materials and / or other components of the pump, which are in contact with the materials processed in the working room-are not connected Sturdy engineering material to form, for example, stainless steel, and arbitrarily briefly described below. The refractory material is a metallic material such as an alloy described in the preceding technology, but preferably a polymeric engineering material has a softening at a critical temperature. temperature. Appropriate polymer materials include Acetal, Polyethylene, Polyethylene Copolymers and Polyethylene Mixtures, a pre-shrinkable (Polyethylene sub-polyethylene. Company (Cadillac's Material, and has a dimension of 138 to 140 ° C. It is rotated in one form. The rotor forms a sub-component when the rotor is in the direction of the pump. The rotor of the spiral type or the invention consists of contacting the stator through Easy-rotor components for all positive displacements

Dienas '' ^ An example of this kind of material is manufactured by Meguidi, Australia's Plastics) with a quotient of TIVAR 1000, and the observed melting range is about 1 30 to 13.5 ° C. And a card softening point. Pump, a type comprising a device in a stator or casing for the propeller and any at least its surface made of a fusible material and the stator or casing. In a preferred embodiment of this kind of evil, the pump is a first-stage cavitation and a sturdy spiral rotor member and the stator has a longitudinal and defined spiral groove. When rotating in the stator cavity S forms a series of cavities which move in an axial direction while pumping. In this embodiment, it is preferable to make a spiral-shaped remelting material. We found that using fusible materials f can be made into a variety of different types soon. Fifth, the description of the invention (7) The new design of the rotor has actual material, and does not record steel. Made in this implementation. Although the surface of the stator cavity of the pump is made of soluble elastomer, the stator can be made of elastomer. Very clear. Or it is often convenient to do this. In another form, the pump generally consists of two impellers (cam trains) where the vanes are lobed. Tooth solid materials, such as steel, provide one of the benefits of either a refractory material or a tooth that requires the shape of a component on the gear. Or in that case, the stator can be made of an elastic material to promote the rotation of the pumping material in the modified example. It can be made of a qualitative material. The elastomer "the stator can be lined with It is delivered with different kuben e U, which has viscosity and solid shape. The spiral rotor component can be used as the core of the component. For example, a solid material can work as a newspaper. A material must be on or It is made of materials < engineering a kind of projectile. The general need to omit the bomb chamber can not be lined with a dazzling rotor structure material such as a sex body, but the sex material material is a bushing, and the elastomer is a predetermined temperature material. At least stainless steel is used to set the step into the hole. At least, if it is introduced or the whole example is fused before, but in a part of the state, this hair will mesh with the pumping material. Shape. In that train The device is made into a re-lined seal. Because of the structure. The wheel can be lined with an elastic bushing which can be used in a gear pump. The gear of a gear is rotated in the opposite way to the gear pump. In some embodiments, the gear in the case of a gear is called a vane pump that rotates in a casing. Usually the gear is made of an elastic bushing such as rubber or another kind of spring. In one embodiment, the casing can also be lined. Or whole · Made of fusible material and thus excluded in order to provide the interference distribution required by the pumping mechanism

Page 12 482876 Description of the invention (8) 〇 In another form, the invention can be applied to a piston pump in which a piston is displaced in a shell while processing materials through a working chamber in a shell. In this embodiment, the 'linguistic top member or cup, which engages the shell and / or the shell to its working surface, is made of a soluble material. Any one of the two components can be easily dazzled, but it is preferred that the entire piston top member is made of a fusible member. The three piston top member can use at least one intermediate joint structure 4 to join the tongue-based branch component. For example, a rib. In that case, in addition to the deformation of the piston top member and / or the shell, this at least one intermediately engaged member will cause the piston top member to disengage from the support member and thus stop or ease the progress in the pump's working room. Processing of materials. Each pumping… includes a fusible material ’valve or any valve type may have at least one ::: capacity or device. Therefore, when the pump fails, the scooping in: the heat of the fuel or the components of the valves will rise higher than the pre-c, which will cause the obstacle: so the processing bucket is in the studio— In the comparative embodiment, this or each valve is a check = Aifu is invalid. The valve ball and valve seat are made of or lined with a fusible material cover, and one or two balls are made entirely of fusible material. to make. Preferably, it is advantageous that we find that using the material according to the present invention can also reduce or reduce the pumping surface when looking for working surfaces with few pump displacement components, such as the stator of the pump—the polymer fusible wheel or the movable wall component: pump The friction between the surface of the rotor of the shell and the teeth. This can reduce the amount of energy needed for the operation = the connection between the component and the working room. Under normal operating conditions, the torque demand and the heat generated can be used to reduce the temperature increase rate in the event of a pump failure. ^ ^ &Amp; a < Three embodiments of a pump will be described here by way of example only, ^ σ < w® surface to illustrate, in which: Fig. ', According to the present invention represents a part of the primary acupoint pump The cross section is a cross-sectional view of a piston pump according to the present invention; ^ 3 is an enlarged view of a circled part in FIG. 2; and view ^ is a gear according to the present invention. The pump is made before the cover is removed. The positive figure 5 {系 一 historian: -n. 测 气 H. ", and the graph of torque output to illustrate the results of Example 1 of the example; and the solution ^ 6. Department of the line of m degree and time The figure illustrates the test chart in Example 2. The glue is not glued. When the middle one is used for the operation of Ti, i means: a double-lobed step-up acupoint fantasy which includes a shell 2 and the bottom of the ancient cricket. 3, the stainless steel is lined with an elastic material 4 such as a nitrile shuttle elastomer material, the stator is defined by a spiral groove or a studio nitrile; the rotor 9 can be rotated as far as possible when the rotor 9 is rotated. The driven motor 7 is turned over, r ^ + b °-then moves the shaft 8 and then rotates the rotor. Rotor q-a type of fusible material consisting of two: 9 var 1 0 0 0 is a right-r ^ Y Sol Uur / Monashe company that has been screened by P〇1 with a sweat of 0 thousand miles. An observable dazzling range 1 30-1 35 t and a maximum 2 f temperature of about 80 ° C. Here, wu takes a large continuous raw material from the inlet fruit to 屮 ^ 1 J 隹Export it helps to spread the worksheet on the rotor

Page 14 482876 V. Description of the Invention (ίο) Any accumulated heat between the surface 10 and the stator bushing 4. In the event of dry running, 'at least the working surface of the UHHWPE 10 will accumulate heat and deform', and when it softens, the frictional contact between the working surface and the elastomer bushing 4 will be reduced. In case of invalid head movement, the working surface 10 will deform. When the temperature softens as the temperature increases, the material can be reduced from the rotor 8 to the pumping because the material can pass between the deformed child and the stator. Energy input of the emulsion components. / Referring now to Figures 2 and 3, there is a piston pump U which includes a shell 12 defining a working chamber 1 4 and one of the pistons 16 can be displaced back and forth. This reciprocating action is achieved, for example, by an air or hydraulic motor (not shown) which drives the piston 16 via a connecting rod 18. The shell 12 has an inlet shell 20 at its inlet end and an outlet shell 22 at its outlet end. The inlet housing 20 has an inlet portion 24 to connect the pump to a source of material. The outlet housing 22 has an outlet 26 connected from the working chamber 14 and a bearing end member 28 of one of the f-supporting pistons 16. A gasket 30 is arranged between the outlet 豉 22 and the end bearing member 28, and two friction reductions are provided. The ring 32 is supported by a tail bearing f member. The trailing end bearing member 28 also supports an oil wiper ring 34 of a seal type at one end. The shape of the wiper ring 34 sealed at one end helps to reduce heat buildup in the piston in the event of dry pumping. With particular reference to Fig. 3, the piston 16 includes a piston member 36 which is connected to a piston rod 38 by means of a threaded = fastener 40 through a separate official partition 42. The piston, member 36 has a piston top 44 which is positioned on the living base by an annular rib 46, and the rib 46 is fixed by a brake member 48 and a fastener 40. The piston top 44 has an annular groove around it, which can be accessed.

Page 15 482876 V. Description of the invention (11) The other end seals the partition 50. Similarly, the end-sealed baffle can slow the heat buildup in the piston in the event of dry running.活塞 The piston member 36 is annular and defines an outlet check ball valve. The valve ball 54 can move freely within the range of the valve seat and the piston rod 38. : And the plate 4 2 restricts the inlet housing 20 to define a valve seat of the inlet check ball valve. The ball 58 of the ball valve can be stopped at the valve seat 56 and a positioning pin 60 to restrict the inlet to this movement. Freely moving and using the tip 62 In use, because the piston 16 is discharged in the driving direction as shown in FIG. 2, the output to the right of the studio 丨 4 ... is closed and the check ball valve is forced to pass through the outlet 16 The 'suction force' generated by the material port side of the piston wheel exit side is treated by a person * and discharged. In the same way, at the piston inlet, the inlet port 2 厶, what is the positive pressure, the material will act on the material through the opened inlet A. The piston is moved to the left in Fig. 2 and Shiva sucks in. Since the piston cycle is the pressure on the material in the working room 14, the closed seal 56 on the income side of the piston then forces the outlet check ball to force the inlet check valve ball 5 to seal the material through the valve seat 5 2 and the spacer. The plate 4 2 and the ball 5 4 are self-sealing 5 2 removed so that in order to avoid a pump failure, the output side of the working room. The overheating phenomenon of the product, especially when the working chamber is tired due to the invalid output operation, the top 44 of the piston needs to use the air or the invalid pressure 1 0 0 0. If emulsified in the working room, the molecular weight of polyethylene Tivar exceeds the top of the piston made of T ivar and the temperature of the piston increases to the maximum temperature of the top material that begins to soften and continuous fiber operation 1 3 At the temperature range of 0-1 3 5 ° C, it will smoke,%, and at the end when the temperature is close to & 玍 古 隆, beer ° At this stage, if milk 482876

The top of the milk stopper in the chemical solution can be separated from the working outlet to the south of the working outlet. The ring-shaped piston that can be converted into the liquid in the working material can be collected by the ground chamber 14 and the inlet. The work that is deformed in the component chamber for the accumulated portion 46 will change to the member 36. The B explosion structure of the check ball valve applied to the material on the top of the piston 4 4 is not suitable to pass through one of the emulsions. Parts and shells 1 2 can be reduced. Shaped like these working balls 54 and 58 that are added back and forth, this can also seal each or both of the work in place. If the material is fully plugged on the top, the piston 16 'will then be approximately 0, respectively. The ground is the valve seat of Wenying in the studio. When the valve ball is around, then you can go into the corpse and soften it. The remaining parts will continue to be reduced. If you increase the time by the same degree, if you will reduce the step, as described above, Where does the temperature increase closer? 〇In the art, that is, when the decomposition temperature of the liquid explosives, by using the equipment and the easy to dissolve the piston top, the valve member of the valley can quickly reduce the temperature. Referring now to FIG. 4, a gear pump 60 includes a housing 62 in which two intermeshed gears 64 and 66 can rotate in opposite directions and discharge the emulsion composition from the inlet 70 through the working chamber 68 to the outlet 72. The gears 64 and 66 are each supported by a respective mandrel 74 and 76 for rotation, and one or both of the mandrels are driven by an outer motor (not shown). If one of the gears is driven by a motor, the other gear is rotated in the opposite direction by the other gear that is meshed with each other. One or two of the ear gears 64 and 66 are composed of the aforementioned ultra-high molecular weight ethylene, so in case of dry pumping or ineffective head pumping, 482876

V. Explanation of the invention (13) When the pump fails, the heat accumulated in the fruit will cause the softening and deformation of this or each gear so that the gear will not be driven by the respective mandrel or the county g too y 4 疋 even if it is still Rotates and does not discharge the emulsion ingredients through the working chamber 6-8. The minus 68 shell can optionally be lined with an elastomeric material, such as nitrile rubber, with as little frictional engagement as possible between the gears 64 and 66, while the surface of the shell defines the working chamber. However, this advantage is that when both the gears 64 and 66 are formed by deleting, it is unnecessary to line the elastic material. Example 1 A Mono E041 progressive cavity pump with a 40 mm diameter rotor was modified to the design illustrated in Figure 1. Therefore, a stainless steel rotor was replaced with a rotor of the same shape consisting of UHMWPE Tivar 1000.

The modified pump rotates at a speed of 460 rpm. Initially, water is contained in the rotor 2 but then dried to simulate dry operation. A standard dumpling is equipped with a temperature sensor in the center of its shaft (a) and its discharge port (b), and the torque output (c) of its motor is measured. The results are shown in Fig. 5. Not shown in the figure, the temperature quickly rose to almost 140 ° within 4 minutes. At the same time, the torque output of the motor increased from about 4 kff to about 4.2 kW after about 75 seconds, and then decreased to about 3 · j kw after about 200 seconds. This large amount of torque was reduced by $ It shows the decrease of input energy after the rotor is heated and deformed. This can be confirmed after the rotor is removed from the mule; it can be observed that there is a flat wave top due to material deformation and separation. Although the rotor is very hot-it can also be flexed by hand at a temperature of about 80 to 900 ° C. Λ Example 2

Page 18, 482876, invention description (14) A piston pump with a maximum pump displacement, which is described with reference to FIGS. 2 and 3 and driven by a linear drive air motor with a maximum pumping pressure limit of 4 0 0 0 kP a, The control of pumping under the condition of invalid head pumping with ineffective compression of i mode is done under filling conditions. Π The inlet and outlet of the pump are filled with emulsified liquid phase air at the bottom of the pump. The angle of the inlet studio is filled with a pressure ring with adjustable pressure. At the beginning, the cavities in the two compression pumps are circulated at an approximate ratio of 2.0: 1 (the outlet chamber to the inlet chamber), and then the pressure can be generated to 2 = between the port and the inlet chamber (the outlet chamber is between the piston and the outlet, the inlet The small air leakage between the chamber, the base valve and the inlet check ball valve is caused by the gap between the non-two and two pieces of the pump. The gas six is not a progressive compression (meaning that the pressure is equal to the two and the pump circulates and (Increase) but maintain a cyclic compression ratio. Although the inlet force of the self-driving motor is transmitted to the air gap, it causes heating in the middle air gap. The air temperature / measured from three positions, ⑷ along the piston or OR 'and (b) adjacent to the outlet or piston check ball valve in the inlet chamber to see that J is out of the chamber'. The results are shown in Figure 6. It can be seen from the figure that during the period from which the temperature of σA is increased from f to middle to more than 1 30 ° C, it takes about 30 minutes, and the period of σ to zhongbei increases to about 1 2 @ ^. , 5 C and about 11 〇t in the break, about less heat through the same pump = lost, the less increase in degree is due to its better heat conduction and nature: 6 brackets can be seen in the outlet About 130. . Start to fall 'despite the piston condition. This is because the top of the piston or the cup and the shape of the moxa or cymbal exit check ball are located at a high temperature, so it is prevented from being in TOZ.O / u 5. Description of the invention (15) The air gap in the exit chamber, # ^ Those who know * 蓺 < Ϊ m outside the present invention is within the scope of what the person understands and understands the invention including 5 brothers can do. The present invention: Such changes ^ ^ also include all steps known or indicated in this detailed description, any and all of the above steps or features, and the whole follow this detailed description and application, otherwise this' 1 includes " (&Quot; c〇mpi_ise (" comprises ") and ("c〇mprising " specified whole or step or group of whole or whole or step or group of groups or steps ^ In this detailed description, any prior art As a general knowledge of recognition or any form of identity. Except those that are stated on the disc in a variety of changes and modifications. To and the modifications are attributed to its spirit and steps' characteristics, ingredients and mixtures separately or collectively , And any combination of both. A scope of interest, except for the context needs "), and its changes such as " include ,,), to understand that the inclusion of a step does not exclude any other reference to the art can not, nor should it apply recommendations It was made a total of #

Page 20 482876 Schematic description

Page 21

Claims (1)

482876 VI. Scope of patent application 1. A pump includes a shell defining a working chamber with an inlet and an outlet and a pump member which are relatively movable and can be discharged in the working chamber to discharge the material processed by the pump and pass through the inlet. From the working chamber to the outlet, and the working surface of at least one of the pump components is used to contact the material processed in the pump and is composed of a material which is strong at the normal operating temperature of a component but which It is fusible at operating temperature but not higher than the predetermined temperature of about 170 ° C. 2. The working surface of at least two or more components of the pump according to item 1 of the scope of patent application, when in use, is in contact with the materials processed in the working room, and is composed of the easy-to-marry material. 3. According to item 1 or item 2 of the scope of the patent application, the thickness of the soluble material on the working surface is at least 5 mm. 4. The pump according to item 1 of the scope of patent application where the entire structure of the component or the component is at least as large as the fusible material. (Factory) m TJV X Qiwei 彳 .ϊ Λ-λτ rfn i —-rr, ~ -zr-> -4- JL ^ 丄 Λ-, ττ7 —r- -ir 1 person 3 .evil 1? Weevil Meng's profit-seeking map music JL item l Ben Xingya sincerely predicts > blood / X number of 1 400 ° C. 6. The pump according to item 1 of the patent application range, wherein the predetermined temperature is in a range of about 130 to 140 t. 7. The pump according to item 1 of the patent application scope, in which the normal operating temperature cannot be higher than about 80 ° C. 8. The pump according to item 1 of the patent application, wherein the fusible material includes a polymer material having a softening temperature of the predetermined temperature. 9. The pump according to item 8 of the patent application, wherein the polymer fusible material is selected from the group consisting of acetals, polyethylene, polyethylene homopolymers, and polyethylene mixtures. O: \ 67 \ 67453.ptd Page 22 482876 VI. Scope of patent application 10. The pump according to item 9 of the scope of patent application, wherein the polymer fusible material is an ultra-high molecular weight polyethylene. 1 1. The pump according to item 1 of the scope of patent application is selected from a progressive cavity pump, a piston system and a gear system. 12. The pump according to item 11 of the scope of the patent application, wherein the pump is a one-stage cavity pump and the component is selected from a rotor, a stator, and both. 13. The pump according to item 12 of the scope of patent application, wherein the component is a rotor and at least the working surface of the stator is made of an elastic material. 14. The pump according to item 11 of the scope of the patent application, wherein the pump is a gear pump including two intermeshed gears in a shell in a reversed manner and the component is selected from at least one of gears and the shell. ‘15. The pump according to item 11 of the patent application wherein the pump is a piston pump and the component is selected from more than one component of at least one piston assembly, a casing and at least one flow control valve. i t). The mercury appliance according to item i b of the profit-seeking range has a crazy double-type selling base and the at least one piston assembly is the top of the piston. 17. The pump according to item 15 of the scope of patent application, wherein the flow control valve includes an inlet ball check valve and an outlet ball check valve and wherein the components of the at least one flow control valve include at least one of the valves. Ball or valve seat. 18. The pump according to item 17 of the patent application, wherein the component of the at least one flow control valve is a ball of each valve. O: \ 67 \ 67453.ptd Page 23