A new type of permanent magnetic zero leakage automatic steam trap

Abstract

The present invention provides a novel permanent magnetic zero-leakage automatic steam trap, which is used in the technical field of condensate discharge of compressed air systems, and includes an upper valve block, a valve base, and a valve body. The valve body is provided with a float, a float guide rod, an annular magnet, a magnetic movable valve core, a fixed valve core seat, a driving cylinder, a switch valve, and the like. The water level change of the compressed air condensate in the valve is utilized to make the float change synchronously under the action of buoyancy, so as to cause the relative position change of the annular magnet in the float and the magnetic movable valve core, thereby opening or breaking the instrument compressed air circuit, and controlling the switch of the ball valve by the driving cylinder to realize the discharge of condensate. The present invention, through the arrangement of the float structure and the cylindrical water tank, ensures that there is always condensate in the cylindrical water tank, so that the compressed air in the valve body is always isolated from the outside world, and zero leakage is achieved, so that the operating energy consumption cost of the compressed air system is reduced, no external power supply is required, and the equipment has a long service life and low maintenance and operating costs.

Description

Technical Field

[0001] The invention relates to the technical field of discharge of condensed water in a compressed air system, and in particular to a new type of permanent magnetic zero-leakage automatic steam trap with reliable performance and energy saving. Background Art

[0002] There are several main types of drainage devices currently used for condensate in compressed air systems:

[0003] Manual valve, when in use, keep the manual valve in an opening state of about 10%. When the condensed water is discharged, a small amount of compressed air will leak, and the compressed air leaks and generates noise of more than 85 decibels. The leakage of expensive compressed air causes energy waste, and reduces the pressure of the air supply system, interfering with the normal operation of the equipment.

[0004] Mechanical lever float type drain valve uses the principle of float driven mechanical lever to control the opening and closing of drain. Usually, the drain port diameter is designed to be small. The oil and scale impurities in the condensed water can easily block the drain port or adhere to the rotation of the mechanical lever, so that the float cannot float up and down, causing the drain valve to fail, and increasing production and maintenance costs. The action point of the float driven mechanical actuator to close the drain valve is often later than the drain point of the condensed water, so that a small amount of gas leaks each time the water is drained, and it cannot really achieve 100% gas blocking, which increases the operating energy consumption cost of the system.

[0005] For electronic sensor drain valves, oil and scale impurities in condensed water can easily contaminate the electronic sensor elements and cause abnormal operation of the drain valve. At the same time, electronic sensors or circuit failures are difficult to repair, which increases the system operation and maintenance costs and operating energy consumption costs.

[0006] The drainage time and drainage interval of the timer-controlled drain valve are set manually, but the cumulative amount of condensate produced in the system is determined by comprehensive factors such as ambient temperature changes and compressed air usage. It is impossible to synchronize the set drainage time and drainage interval with the cumulative amount of condensate produced in the system, resulting in a small amount of gas leakage when the timer controls the drainage, which increases the system's operating energy consumption cost.

[0007] In addition, the existing drain valve has a small drainage volume when opened and closed at one time. When the system drainage volume is large, it is necessary to connect multiple drain valves in parallel, which increases the investment in the system's drainage equipment and reduces the reliability of the system operation.

[0008] The valve body of the above-mentioned drain valve is usually made of metal cast iron or other metal materials, and the liquid level inside the valve body and whether the actuator operates normally cannot be monitored from the outside. Summary of the invention

[0009] In view of the above-mentioned existing technical defects, the purpose of the present invention is to provide a new type of permanent magnetic zero leakage automatic steam trap with reliable performance and energy saving, which is used to solve the problems of short service life, easy leakage during drainage, small diameter of drainage port, easy blockage, high frequency of electrical failure, small drainage volume during opening and closing, and difficult maintenance in the drainage valve in the prior art. The technical solution adopted by the present invention is as follows:

[0010] A new type of permanent magnetic zero leakage automatic steam trap, comprising:

[0011] An upper valve block is provided with a first air inlet and an air inlet channel, and compressed air enters the valve body through the first air inlet and the air inlet channel. The upper valve block is provided with a second air inlet, an air inlet channel, an air outlet and an air outlet channel;

[0012] The valve base is provided with a condensate inlet, a condensate outlet, and a water storage tank. The water storage tank is communicated with the inner cavity of the valve body. Condensate enters the water storage tank through the condensate inlet and enters the pneumatic switch valve through the condensate outlet.

[0013] The valve body is located between the upper valve block and the valve base. The valve body, the upper valve block and the valve base are fixedly and sealedly connected as a whole to form a main valve. The inner cavity of the valve body is provided with a float, a float guide rod, a magnet, a magnetic active valve core and a fixed valve core seat. The center of the float is a cylindrical through hole, and the float guide rod is inserted into the float guide rod. There is a certain gap between the inner diameter of the cylindrical through hole in the center of the float and the outer diameter of the float guide rod. The upper end of the float guide rod is fixedly and sealedly connected to the upper valve block. The upper end of the float guide rod is a cylindrical groove. The magnetic active valve core is placed in the cylindrical groove at the upper end of the float guide rod. There is a certain gap between the inner diameter of the cylindrical groove at the upper end of the float guide rod and the outer diameter of the magnetic active valve core. The fixed valve core seat is located above the magnetic active valve core. A through hole is provided in the middle of the fixed valve core seat. One end of the fixed valve core seat is fixedly connected to the upper valve block. The middle through hole of the fixed valve core seat is connected to the second outlet of the upper valve block. The air passages are interconnected, and the compressed air passes through the second air inlet, enters the cylindrical groove at the upper end of the float guide rod through the second air inlet passage, enters the second air outlet passage through the middle through hole of the fixed valve core seat, and enters the driving cylinder through the air outlet. The outer diameter of the magnetic movable valve core is larger than the inner diameter of the through hole of the fixed valve core seat. The magnetic movable valve core fits the fixed valve core seat, and the air path of the second air inlet passage and the second air outlet passage is disconnected. The magnetic movable valve core is separated from the fixed valve core seat, and the air path of the second air inlet passage and the second air outlet passage is connected. The lower end of the float is movably placed on the valve base, and a magnet is provided at the upper end of the float through hole. The inner magnetic pole of the magnet and the outer magnetic pole of the magnetic movable valve core are the same magnetic poles, forming a pair of same magnetic poles that repel each other. The magnet and the magnetic movable valve core form a pair of control to open or break the second compressed air air path, so as to control the driving cylinder;

[0014] Driving cylinder, switching valve, the air inlet of the driving cylinder is connected to the air outlet of the upper valve block, one end of the switching valve is connected to the condensate outlet on the valve base, and the other end is used for condensate discharge, the cylinder rod of the driving cylinder is connected to the valve stem of the switching valve through a connecting rod, and the opening and closing of the switching valve is controlled by the movement of the cylinder rod.

[0015] Furthermore, the valve body is a transparent shell made of a high-strength resin material with good transparency and fiber, so that the water level change state of the inner cavity of the steam trap main valve can be observed from the outside.

[0016] Furthermore, an annular soft brush for cleaning scale on the inner wall of the valve body is provided on the upper part of the outer wall of the float.

[0017] Furthermore, the float is in the shape of a trapezoidal circular column.

[0018] Furthermore, sealing pads are provided at both ends of the valve body, which are fixed and sealed together with the upper valve block and the valve base by bolts.

[0019] Furthermore, the magnet is an annular magnet, which is built into the inner wall of the float through hole, and the magnetic movable valve core is a cylindrical magnet, with a soft sealing pad on the top, forming a pair of sealing pairs with the fixed valve core seat.

[0020] Furthermore, the switch valve is a ball valve.

[0021] Furthermore, the driving cylinder is installed on the upper valve block through a bracket, the cylinder air inlet is connected to the second air outlet of the upper valve block through a hose, and the cylinder rod is connected to the switch valve stem through a connecting rod.

[0022] Further, the main valve is connected in parallel with at least one auxiliary valve, and the auxiliary valve includes an auxiliary valve upper valve block, an auxiliary valve valve base, and an auxiliary valve body. The auxiliary valve body is located between the auxiliary valve upper valve block and the auxiliary valve base, and the auxiliary valve body, the auxiliary valve upper valve block, and the auxiliary valve base are fixedly sealed and connected to form an auxiliary valve; the auxiliary valve upper valve block is provided with an air inlet, an airway, a first air outlet, and a second air outlet, the first air outlet is connected with the first air inlet of the main valve, and the second air outlet is connected with the inner cavity of the auxiliary valve body, the auxiliary valve base is provided with a condensate inlet and a condensate outlet, the condensate outlet is connected with the condensate inlet of the main valve, the other ends of the condensate inlet and the condensate outlet are respectively connected with the inner cavity of the auxiliary valve body, and the main valve and the auxiliary valve are fixedly connected.

[0023] Furthermore, the upper valve block is provided with a third air channel, which is respectively connected with the cylindrical groove at the upper end of the float guide rod and the second air inlet channel; the second air inlet, the second air inlet channel, the cylindrical groove at the upper end of the float guide rod, the third air channel and the air outlet constitute an air path; the third air channel is provided with an online detection reset spring pressure ring, an online detection button reset spring, an online detection button positioning guide ring, an online detection button and the like to constitute a driving cylinder action detection device.

[0024] Its working principle is further explained as follows:

[0025] The water level change of compressed air condensate accumulated in the main valve is used to make the float synchronize with the water level change under the action of buoyancy. The change of the up and down position of the float causes the relative position change of the annular magnet and the magnetic movable valve core in the float. The magnetic movable valve core moves up and down asynchronously with the float under the action of magnetic force (opposite to the movement direction of the float), so that the instrument compressed air gas path (the second air inlet, airway and air outlet of the upper valve block) is opened or disconnected; when the circuit is opened, the instrument compressed air drives the cylinder to move, and the cylinder rod drives the connecting rod to open the ball valve, so as to discharge the compressed air condensate in the automatic drainage main valve; when the compressed air condensate in the automatic drainage main valve is discharged, the liquid level in the automatic drainage main valve gradually decreases, and the float also gradually decreases at the same time. When the liquid level decreases to a certain value, the annular magnet in the synchronously descending float drives the magnetic movable valve core to move upward through magnetic force and cuts off the instrument compressed air supply of the driving cylinder. At that time, the driving cylinder is reset by the cylinder reset spring and the connecting rod is reset by the cylinder rod to drive the ball valve to close, thereby completing a drainage cycle.

[0026] The content of the present invention is further described as follows:

[0027] A novel permanent magnetic zero-leakage automatic steam trap comprises: an upper valve block of a main valve of the steam trap, the upper valve block is located on the top of the main valve, the upper valve block is provided with an instrument compressed air inlet and outlet and an air path, and assembly bolts passing through the upper valve block are provided at the four corners of the upper valve block; a saturated compressed air intake balance interface with an internal thread is provided on the side of the upper valve block, and is communicated with a valve cavity formed by the upper valve block, a valve body, and a valve base; an upper cylindrical groove of a float guide rod is sealed and connected to the bottom of the upper valve block, and an online monitoring hole is provided on the upper valve block, and the online monitoring hole is communicated with the cavity formed by the upper cylindrical groove of the float guide rod and the second air inlet and airway of the upper valve block.

[0028] The bottom circular groove of the upper valve block of the steam trap main valve is embedded with a sealing gasket, and the sealing gasket is pressed by the end of the valve body, and the other end of the valve body presses the sealing gasket into the top circular groove of the steam trap main valve base, and is fastened and connected to form the steam trap main valve by assembling bolts.

[0029] The valve base of the main valve of the steam trap is located at the bottom of the main valve, and a sealing gasket circular groove is provided on the top surface of the valve base. Internal threads for connecting assembly bolts are provided at the four corners of the outer side of the valve base. The valve base is provided with a circular water groove with a diameter smaller than the outer diameter of the bottom of the float, and a tenon groove for connecting the float guide rod is provided at the center point of the valve base; a condensate inlet with an internal thread is provided on the side of the valve base for connecting the drain port of the compressed air system, and this water inlet is communicated with the circular water groove; a compressed air condensate discharge port with an internal thread is provided on the side of the base, and its condensate discharge port is communicated with the circular water groove, and the condensate discharge port is connected to a connecting short pipe, and the other end of the connecting short pipe is connected to the inlet of the ball valve.

[0030] The driving cylinder bracket is installed on the left side of the upper valve block, and the cylinder end of the driving cylinder is connected to the driving cylinder bracket by the driving cylinder connecting pin; the cylinder rod is connected to the connecting rod by the driving cylinder action push rod connecting pin, and the other end of the connecting rod is rigidly connected to the rotating valve stem of the ball valve; the opening of the ball valve is completed by the driving cylinder, and the closing of the ball valve is completed by the driving cylinder reset spring.

[0031] The float and the float guide rod are trapezoidal annular columns, an annular magnet is arranged on the upper part of the inner circle of the trapezoidal annular columns, and an internal cleaning soft brush is arranged on the upper part of the outer side of the trapezoidal annular columns; the trapezoidal annular column float is located inside the valve body and sits on the upper part of the base of the main valve of the steam trap; one end of the float guide rod is a convex tenon groove and the other end is provided with a cylindrical groove inner cavity; the float guide rod is vertically seated on the top surface of the base, and the convex tenon groove at the end of the float guide rod is connected with the concave tenon groove on the top surface of the base, and the float guide rod vertically passes through the inner cylindrical hole of the trapezoidal annular float and is sealed and connected with the upper valve block.

[0032] The magnetic movable valve core is a cylindrical magnet, and a soft sealing pad is arranged on the top of the cylindrical magnet to form a pair of sealing pairs with the fixed valve core seat. The fixed valve core seat is a cylindrical cup with air holes arranged at the bottom of the cylindrical cup. The upper part of the cylindrical cup is sealed and connected to the upper valve block.

[0033] Online detection, the online detection consists of an inverted T-shaped online detection button, an online detection button positioning guide ring, an online detection button reset spring and an online detection reset spring pressure ring; the online detection inverted T-shaped button passes vertically through the online detection hole of the upper valve block from bottom to top, and one end of the online detection button reset spring presses the online detection button positioning guide ring, and the other end of the online detection button reset spring is pressed by the online detection reset spring pressure ring; the top of the online detection inverted T-shaped button passes through the online detection button positioning guide ring, and forms a sealing pair on the guide ring.

[0034] The upper valve block of the auxiliary valve of the automatic steam trap is located at the top of the auxiliary valve. Assembly bolt holes that pass through the upper valve block are provided at the four corners of the upper valve block of the auxiliary valve; a saturated compressed air intake balance interface with internal threads is provided on the right side of the upper valve block of the auxiliary valve, and is connected with the valve cavity formed by the upper valve block of the auxiliary valve, the valve body, and the valve base of the auxiliary valve; a sealing gasket circular groove and a circular hole connected with the saturated compressed air intake balance interface on the right side and the compressed air outlet on the left side are provided on the bottom surface of the upper valve block of the auxiliary valve with the center point as the center of the circle; a compressed air balance outlet with internal threads is provided on the left side of the upper valve block.

[0035] The auxiliary valve base of the automatic steam trap is located at the bottom of the auxiliary valve. A sealing gasket circular groove is provided on the top surface of the auxiliary valve base with the center point as the center of the circle, and internal threaded holes for connecting assembly bolts are provided at the four corners of the outer side of the circular groove. A cylindrical water tank is provided in the center of the auxiliary valve base; a condensate inlet with an internal thread is provided on the right side of the auxiliary valve base for connecting the drain outlet of the compressed air system, and this water inlet is connected to the cylindrical water tank; a compressed air condensate discharge outlet with an internal thread is provided on the left side of the base, and its condensate discharge outlet is connected to the circular water tank.

[0036] The bottom circular groove of the valve block on the auxiliary valve of the automatic steam trap is embedded with a sealing gasket, and the sealing gasket is pressed by the end of the valve body. The other end of the valve body presses the sealing gasket into the top circular groove of the base of the auxiliary valve of the automatic steam trap, and is fastened and connected to form the auxiliary valve of the automatic steam trap by assembling bolts;

[0037] The compressed air outlet on the left side of the auxiliary valve top is connected to the saturated compressed air inlet balance interface on the right side of the main valve top through a joint; the compressed air condensate discharge outlet on the left side of the auxiliary valve bottom is connected to the condensate inlet on the right side of the main valve bottom through a joint, thereby realizing parallel connection between the main valve and the auxiliary valve and increasing the condensate discharge volume each time the main valve is opened.

[0038] Compared with the prior art, the present invention achieves the following beneficial effects:

[0039] 1. Due to the design of a large-diameter drain port, condensed water can be effectively discharged, and the drain port will not be blocked by scale, impurities, etc. due to its small diameter, reducing the workload of daily maintenance.

[0040] 2. Through the setting of the float structure and the cylindrical water tank, condensed water is always maintained in the cylindrical water tank during the drainage cycle, so that the compressed air in the valve body is always isolated from the outside world, and 100% drainage and air blocking can be achieved, that is, zero air leakage is achieved, thereby reducing the operating energy consumption cost of the compressed air system.

[0041] 3. The magnetic active valve core switch is controlled by the magnetic force of the permanent magnetic ring magnet on the upper part of the float to achieve automatic drainage and air blocking, without the worry of mechanical or electrical failure, and reliable performance. At the same time, the control component is enclosed in the cylindrical groove cavity on the upper part of the float guide rod, completely isolated from the condensed water and air space in the valve body, and the control component is not affected by impurities such as condensed water scale and debris, with a long service life, safe operation, and high reliability.

[0042] 4. The steam trap main valve is connected in parallel with the automatic steam trap auxiliary valve. When the drainage volume is small, the steam trap main valve can be used; when the drainage volume is large, the steam trap main valve and the parallel automatic steam trap auxiliary valve are used (the number of auxiliary valves in parallel can be determined according to the demand for drainage volume). This can reduce the number of main valves of the drain valve and reduce the opening and closing frequency of the automatic drain valve, thereby increasing the service life of the automatic drain valve and reducing the amount of instrument compressed air consumed by the opening and closing of the drain valve, that is, saving operating costs.

[0043] 5. The valve body is made of visible transparent material, and a soft brush for cleaning the inner wall is installed on the outside of the float. The up and down movement of the float drives the soft brush for cleaning the inner wall of the valve body, so that the drainage of condensed water in the valve body is clear at a glance, which is convenient for production operation and maintenance.

[0044] 6. It is equipped with an online detection function for automatic drainage performance, which can not only observe the drainage of condensate in the valve online, but also detect the automatic drainage performance online. During maintenance, you only need to remove four bolts to clean all internal components, which makes production operation and maintenance extremely convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0045] Figure 1 The figure is a schematic diagram of the main valve structure of a novel permanent magnetic zero-leakage automatic steam trap in the first embodiment of the present invention (water storage state).

[0046] Figure 2 The figure is a schematic diagram of the main valve structure of a novel permanent magnetic zero-leakage automatic steam trap in the first embodiment of the present invention (drainage state).

[0047] Figure 3 The diagram is a structural diagram of a new type of permanent magnetic zero-leakage automatic steam trap main valve and auxiliary valve combination in the second embodiment of the present invention.

[0048] In the figure: 1-main valve upper valve block, 2-driving cylinder bracket, 3-driving cylinder connecting hose, 4-driving cylinder connecting pin, 5-driving cylinder, 6-driving cylinder reset spring, 7-cylinder rod, 8-driving cylinder action push rod connecting pin, 9-connecting rod, 10-ball valve, 11-connecting short pipe, 12-main valve base, 13-base bracket, 14-float guide rod, 15-float, 16-main valve lower sealing gasket, 17-valve body, 18-ring magnet, 19-inner wall cleaning soft brush, 20-magnetic movable valve core, 21-fixed valve core seat, 22-online detection reset spring pressure ring, 23-online detection button reset spring, 24-online detection button positioning guide ring, 25-online detection button, 2 6-assembly bolts, 27-connector, 28-valve block on auxiliary valve, 29-valve base of auxiliary valve, 30-sealing gasket on main valve, 31-air outlet, 32-third air channel, 33-second air inlet channel, 34-second air inlet, 35-first air inlet channel, 36-first air inlet, 37-gas-water separation section, 38-open drainage ditch, 39-condensate outlet, 40-water storage tank, 41-condensate inlet, 42-first air outlet of auxiliary valve, 43-second air outlet of auxiliary valve, 44-air inlet of auxiliary valve, 45-air inlet of auxiliary valve, 46-sealing gasket on auxiliary valve, 47-valve body of auxiliary valve, 48-sealing gasket on auxiliary valve, 49-condensate inlet of auxiliary valve, 50-condensate outlet of auxiliary valve, 51-main valve, 52-auxiliary valve. DETAILED DESCRIPTION

[0049] The following describes the embodiments of the present invention through specific examples, and those skilled in the art can easily understand the advantages and effects of the present invention from the contents disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments, and the details in this specification can also be modified or changed in various ways based on different viewpoints and applications without departing from the spirit of the present invention.

[0050] It should be noted that the illustrations provided in this embodiment are only used to schematically illustrate the basic concept of the present invention. Although the illustrations only show components related to the present invention and are not drawn according to the number, shape and size of components in actual implementation, the type, quantity and proportion of each component in actual implementation may be changed arbitrarily, and the component layout type may also be more complicated.

[0051] Embodiment 1

[0052] See also Figure 1 and Figure 2 The present invention provides a novel permanent magnetic zero-leakage automatic steam trap, comprising:

[0053] The upper valve block 1 of the main valve of the steam trap is located at the top of the main valve. The upper valve block is provided with an inlet and outlet of instrument compressed air and an air path. The four corners of the upper valve block are provided with assembly bolts 26 that pass through the upper valve block. A saturated compressed air intake balance interface with internal threads is provided on the side of the upper valve block, and is connected to the valve cavity formed by the upper valve block, the valve body, and the valve base. The upper part of the float guide rod 14 is sealed and connected to the bottom of the upper valve block. The upper valve block is provided with an online monitoring hole, which is connected to the cavity formed by the upper cylindrical groove of the float guide rod 14 and the upper valve block. The upper valve block is provided with a first air inlet 36, a first air inlet duct 35, a second air inlet 34, a second air inlet duct 33, a third air duct 32, and an air outlet 31.

[0054] The upper sealing gasket 30 is embedded in the bottom circular groove of the upper valve block 1 of the steam trap main valve, and the sealing gasket 30 is pressed by the circular ring at the end of the valve body 17. The circular ring at the other end of the valve body 17 presses the lower sealing gasket 16 in the top circular groove of the steam trap main valve base 12, and is fastened and connected to form the steam trap main valve by assembling bolts 26.

[0055] The main valve base 12 of the steam trap is located at the bottom of the main valve. A sealing gasket circular groove is provided on the top surface of the main valve base 12 with the center point as the center of the circle, and internal threads of connecting assembly bolts 26 are provided at the four corners of the outer side of the circular groove. A circular ring-shaped water tank, i.e., a water storage tank 40, whose diameter is smaller than the outer diameter of the bottom of the float 15 is provided in the inner measuring section of the circular groove, and a tenon groove for connecting the float guide rod 14 is provided at the center point of the circular ring-shaped water tank; a condensate inlet 41 with internal threads is provided on the right side of the main valve base for connecting the drain port of the compressed air system, and this water inlet is communicated with the circular ring-shaped water tank; a bolt hole for connecting the base bracket is provided on the bottom surface of the main valve base; a compressed air condensate discharge port 39 with internal threads is provided on the left side of the main valve base, and its condensate discharge port is communicated with the circular ring-shaped water tank, and the condensate discharge port is connected to the connecting short pipe 11, and the other end of the connecting short pipe 11 is connected to the inlet of the ball valve 10.

[0056] The driving cylinder bracket 2 is installed on the left side surface of the upper valve block 1, and the cylinder end of the driving cylinder 5 is connected to the driving cylinder bracket 2 by the driving cylinder connecting pin 4; the cylinder rod 7 is connected to the connecting rod 9 by the driving cylinder action push rod connecting pin 8, and the other end of the connecting rod 9 is rigidly connected to the rotating valve stem of the ball valve 10; the opening of the ball valve 10 is completed by the driving cylinder 5, and the closing of the ball valve 10 is completed by the driving cylinder reset spring 6.

[0057] The float 15 and the float guide rod 14, the float 15 is a trapezoidal annular column, a ring magnet 18 is provided on the upper part of the inner circle of the trapezoidal annular column, and an internal cleaning soft brush 19 is provided on the upper part of the outer side of the trapezoidal annular column; the trapezoidal annular column float 15 is located inside the valve body 17 and sits on the upper part of the base 12 of the steam trap main valve; the float guide rod 14 has a convex tenon groove at one end and a cylindrical groove inner cavity at the other end; the float guide rod 14 sits vertically on the top surface of the base 12, and the convex tenon groove at the end of the float guide rod 14 is connected with the concave tenon groove on the top surface of the base 12, and the float guide rod 14 vertically passes through the inner cylindrical hole of the trapezoidal annular float and is sealed and connected with the upper valve block 1.

[0058] The magnetic movable valve core 20 is a cylindrical magnet, and a soft sealing gasket is provided on the top of the cylindrical magnet, forming a pair of sealing pairs with the fixed valve core seat 21. The fixed valve core seat 21 is a cylindrical cup with air holes at the bottom. The upper part of the cylindrical cup is sealed and connected to the upper valve block 1.

[0059] Online detection, the online detection is composed of an inverted T-shaped online detection button 25, an online detection button positioning guide ring 24, an online detection button reset spring 23 and an online detection reset spring pressure ring 22; the online detection inverted T-shaped button 25 passes vertically through the online detection hole of the upper valve block 1 from bottom to top, and one end of the online detection button reset spring 23 presses the online detection button positioning guide ring 24, and the other end of the online detection button reset spring 23 is pressed by the online detection reset spring pressure ring 22; the top of the online detection inverted T-shaped button 25 passes through the online detection button positioning guide ring 24, and forms an annular sealing pair on the guide ring 24.

[0060] Specific working process: In the initial state, the float 15 falls on the base, and the annular magnet 18 in the float and the magnetic movable valve core 20 are under the action of the same magnetic force that repel each other, so that the magnetic movable valve core 20 is against the fixed valve core seat 21, and a fixed sealing gasket is installed on the upper end of the magnetic movable valve core 20, so that the instrument compressed air gas path is disconnected, the cylinder rod 7 is in a contracted state, the ball valve 10 is closed, and the automatic drain valve is in a water storage state. Figure 1 .

[0061] As the condensed water accumulates in the main valve and the water level rises, the float 15 rises under the action of buoyancy, and the annular magnet 18 in the float rises synchronously with the float. After rising to the critical position, the magnetic force of the annular magnet 18 on the magnetic movable valve core 20 changes to downward, pushing the magnetic movable valve core 20 open, so that the instrument compressed air air path is opened, and the instrument compressed air drives the cylinder to move, the cylinder rod 7 extends, and the connecting rod 9 drives the ball valve to open, so that the compressed air condensed water in the automatic drainage main valve is discharged, as shown in FIG. Figure 2 .

[0062] When the compressed air condensate in the automatic drainage main valve is discharged, the liquid level in the automatic drainage main valve gradually decreases, and the float 15 also gradually decreases at the same time. When the liquid level drops to a certain value, the annular magnet 18 in the float pushes the magnetic movable valve core 20 upward through magnetic force, and cuts off the instrument compressed air passage of the driving cylinder. The driving cylinder 5 is reset by the cylinder reset spring 6 and the ball valve is closed through the cylinder rod 7 and the connecting rod 9, thereby completing a drainage cycle.

[0063] Embodiment 2

[0064] See also Figure 3 The present invention provides a novel permanent magnetic zero leakage automatic steam trap, which is composed of a steam trap main valve 51 and an auxiliary valve 52. This embodiment is based on the first embodiment, and an auxiliary valve 52 is added and connected. The structure of the steam trap main valve is the same as that of the first embodiment. The automatic steam trap auxiliary valve includes:

[0065] The auxiliary valve upper valve block 28 of the automatic steam trap is located at the top of the auxiliary valve, and bolt holes passing through the auxiliary valve upper valve block are provided at the four corners of the auxiliary valve upper valve block 28; a saturated compressed air intake balance interface with internal threads, namely, the auxiliary valve intake port 45 and the auxiliary valve intake channel 44 are provided on the right side of the auxiliary valve upper valve block 28, and are connected with the valve cavity formed by the auxiliary valve upper valve block, the auxiliary valve body, and the auxiliary valve base; a sealing gasket circular groove and a circular hole connected with the saturated compressed air intake balance interface on the right side and the compressed air outlet on the left side are provided on the bottom surface of the auxiliary valve upper valve block 28 with the center point as the center of the circle; a compressed air outlet with internal threads, namely, the first air outlet 42 of the auxiliary valve is provided on the left side of the auxiliary valve upper valve block 28, and a second air outlet 43 is provided in the center of the auxiliary valve upper valve block 28 toward the valve body.

[0066] The auxiliary valve base 29 of the automatic steam trap is located at the bottom of the auxiliary valve, and a sealing gasket circular groove is provided on the top surface of the auxiliary valve base with the center point as the center of the circle, internal threaded holes for connecting assembly bolts are provided at the four corners of the auxiliary valve base, and a cylindrical water tank is provided in the center of the auxiliary valve base; a condensate inlet 49 with an internal thread is provided on the right side of the auxiliary valve base for connecting the drain outlet of the compressed air system, and this water inlet is communicated with the cylindrical water tank; a bolt hole for connecting the base bracket 13 is provided on the bottom surface of the auxiliary valve base; a compressed air condensate discharge port 50 with an internal thread is provided on the left side of the auxiliary valve base, and its condensate discharge port is communicated with the cylindrical water tank.

[0067] The bottom circular groove of the upper valve block 28 of the automatic steam trap auxiliary valve is embedded with the upper sealing gasket 46, and the sealing gasket 46 is pressed by the end of the auxiliary valve body 47, and the other end of the auxiliary valve body 17 presses the lower sealing gasket 48 into the top circular groove of the automatic steam trap auxiliary valve base 29, and is fastened and connected by the assembly bolts 26 to form the automatic steam trap auxiliary valve 52;

[0068] The compressed air outlet 42 on the left side of the top of the auxiliary valve is connected to the connector 27, and the other end of the connector is connected to the saturated compressed air intake balance interface 36 on the right side of the top of the main valve; the compressed air condensate discharge outlet 50 on the left side of the bottom of the auxiliary valve is connected to the connector 27, and the other end of the connector is connected to the condensate inlet 41 on the right side of the bottom of the main valve, so that the main valve 51 and the auxiliary valve 52 are connected in parallel, and the condensate discharge amount each time the main valve is opened is increased.

[0069] The above embodiments are merely illustrative of the principles and effects of the present invention, and are not intended to limit the present invention. Anyone familiar with the technology may modify or change the above embodiments without violating the spirit and scope of the present invention. Therefore, all equivalent modifications or changes made by a person of ordinary skill in the art without departing from the spirit and technical ideas disclosed by the present invention still fall within the scope of protection of the claims of the present invention.

Claims

1. A new type of permanent magnetic zero leakage automatic steam trap, comprising: An upper valve block is provided with a first air inlet and an air inlet channel, and compressed air enters the valve body through the first air inlet and the air inlet channel. The upper valve block is provided with a second air inlet, an air inlet channel, an air outlet and an air outlet channel; The valve base is provided with a condensate inlet, a condensate outlet, and a water storage tank. The water storage tank is communicated with the inner cavity of the valve body. Condensate enters the water storage tank through the condensate inlet and enters the switch valve through the condensate outlet. The valve body is located between the upper valve block and the valve base. The valve body, the upper valve block and the valve base are fixedly and sealedly connected as a whole to form a main valve. The inner cavity of the valve body is provided with a float, a float guide rod, a magnet, a magnetic active valve core and a fixed valve core seat. A float with a through hole is provided along the axial direction and penetrates the float guide rod. There is a certain gap between the inner diameter of the float through hole and the outer diameter of the float guide rod. The upper end of the float guide rod is fixedly and sealedly connected to the upper valve block. The upper end of the float guide rod is a cylindrical groove. The magnetic active valve core is placed in the cylindrical groove at the upper end of the float guide rod. There is a certain gap between the inner diameter of the cylindrical groove at the upper end of the float guide rod and the outer diameter of the magnetic active valve core. The fixed valve core seat is located above the magnetic active valve core. A through hole is provided in the middle of the fixed valve core seat. One end of the fixed valve core seat is fixedly connected to the upper valve block. The middle through hole of the fixed valve core seat is connected to the second air outlet of the upper valve block. The channels are interconnected, compressed air passes through the second air inlet, enters the cylindrical groove at the upper end of the float guide rod through the second air inlet channel, enters the second air outlet channel through the middle through hole of the fixed valve core seat, and enters the driving cylinder through the air outlet. The outer diameter of the magnetic movable valve core is larger than the inner diameter of the through hole of the fixed valve core seat. The magnetic movable valve core fits with the fixed valve core seat, and the air path of the second air inlet channel and the second air outlet channel is disconnected. The magnetic movable valve core is separated from the fixed valve core seat, and the air path of the second air inlet channel and the second air outlet channel is connected. The lower end of the float is movably placed on the valve base, and a magnet is provided at the upper end of the float through hole. The inner magnetic pole of the magnet and the outer magnetic pole of the magnetic movable valve core are the same magnetic poles, forming a pair of same magnetic poles that repel each other. The magnet and the magnetic movable valve core form a pair of control to open or break the second compressed air air path to control the driving cylinder; A driving cylinder and a switch valve, wherein the air inlet of the driving cylinder is connected to the air outlet of the upper valve block, one end of the switch valve is connected to the condensate outlet on the valve base, and the other end is used for condensate discharge, the cylinder rod of the driving cylinder and the valve stem of the switch valve are connected through a connecting rod, and the opening and closing of the switch valve is controlled by the movement of the cylinder rod; the valve body is a transparent shell; and the float is in the shape of a trapezoidal circular ring column.

2. A novel permanent magnetic zero leakage automatic steam trap according to claim 1, characterized in that: An annular soft brush for cleaning the inner wall of the valve body is arranged on the upper part of the outer wall of the float.

3. A novel permanent magnetic zero leakage automatic steam trap according to claim 1, characterized in that: Sealing pads are provided at both ends of the valve body, and are fixed and sealed with the upper valve block and the valve base by bolts.

4. A novel permanent magnetic zero leakage automatic steam trap according to claim 1, characterized in that: The magnet is an annular magnet, which is built into the inner wall of the float through hole. The magnetic movable valve core is a cylindrical magnet, with a soft sealing pad on the top, which forms a pair of sealing pairs with the fixed valve core seat.

5. The novel permanent magnetic zero leakage automatic steam trap according to claim 1 is characterized in that: The switch valve is a ball valve.

6. A new type of permanent magnetic zero leakage automatic steam trap according to claim 1, characterized in that: The driving cylinder is installed on the upper valve block through a bracket, the cylinder air inlet is connected to the second air outlet of the upper valve block through a hose, and the cylinder rod is connected to the switch valve stem through a connecting rod.

7. A novel permanent magnetic zero leakage automatic steam trap according to any one of claims 1 to 6, characterized in that: The main valve is connected in parallel with at least one auxiliary valve, and the auxiliary valve includes an auxiliary valve upper valve block, an auxiliary valve valve base, and an auxiliary valve body. The auxiliary valve body is located between the auxiliary valve upper valve block and the auxiliary valve base, and the auxiliary valve body, the auxiliary valve upper valve block, and the auxiliary valve base are fixedly sealed and connected to form an auxiliary valve; the auxiliary valve upper valve block is provided with an air inlet, an airway, a first air outlet, and a second air outlet, the first air outlet is connected with the first air inlet of the main valve, and the second air outlet is connected with the inner cavity of the auxiliary valve body, the auxiliary valve base is provided with a condensate inlet and a condensate outlet, the condensate outlet is connected with the condensate inlet of the main valve, the other ends of the condensate inlet and the condensate outlet are respectively connected with the inner cavity of the auxiliary valve body, and the main valve and the auxiliary valve are fixedly connected.

8. A novel permanent magnetic zero-leakage automatic steam trap according to any one of claims 1 to 6, characterized in that: The upper valve block is provided with a third air channel, which is respectively connected with the cylindrical groove at the upper end of the float guide rod and the second air inlet channel. The second air inlet, the second air inlet channel, the cylindrical groove at the upper end of the float guide rod, the third air channel and the air outlet constitute an air path. The third air channel is provided with an online detection reset spring pressure ring, an online detection button reset spring, an online detection button positioning guide ring and an online detection button to constitute a driving cylinder action detection device.

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