CN210600337U

CN210600337U - Multifunctional gauge front pressure reducing valve

Info

Publication number: CN210600337U
Application number: CN201921448163.0U
Authority: CN
Inventors: 董西伟
Original assignee: Taizhou Bomiao Water Control Equipment Co Ltd
Current assignee: Taizhou Bomiao Water Control Equipment Co Ltd
Priority date: 2019-09-02
Filing date: 2019-09-02
Publication date: 2020-05-22
Anticipated expiration: 2029-09-02

Abstract

The utility model provides a relief pressure valve before multi-functional table belongs to valve technical field. The device solves the problem of how to improve the use safety while meeting the cut-off and pressure reduction functions. The utility model discloses a valve body and set up in the valve body and can adjust the elasticity pressure reducing assembly of water pressure, elasticity pressure reducing assembly includes the decompression core and acts on the decompression spring on the decompression core, wear to be equipped with ability pivoted valve rod in the valve body upper end, the valve body upper end is equipped with the locking cap outward, be equipped with between locking cap and the valve body and enable both fixed magnetism locking mechanism of circumference, the valve rod is fixed with valve body along spacing and valve rod upper end and locking cap circumference of axial, the lower extreme threaded connection of valve rod has the pressure cover, it is fixed with valve body circumference to press the cover, it promotes the elasticity that decompression spring was overcome to the decompression core and closes the relief pressure valve to enable to press the cover when the. The multifunctional gauge front pressure reducing valve well improves the safety in use, and is wider in application range and more practical.

Description

Multifunctional gauge front pressure reducing valve

Technical Field

The utility model belongs to the technical field of the valve, a valve is related to, especially, relate to a relief pressure valve before multi-functional table.

Background

The pressure reducing valve is a self-operated pressure difference control device, and the working principle of the pressure reducing valve is that the inlet pressure is reduced to a certain required outlet pressure, and the outlet pressure is automatically kept stable by means of the energy of a medium. The structure of current relief pressure valve for example application number 201320697106.2 discloses a relief pressure valve, it is including the valve body that has water inlet and delivery port, valve core seat in the valve body, be equipped with a valve clack subassembly in the valve core seat, threaded connection has valve gap and valve gap to be located the valve core seat top on the valve body, still be equipped with a pressure regulating subassembly and pressure regulating subassembly effect on the valve clack subassembly between valve gap and the valve core seat, the valve clack subassembly can reciprocate along the valve core seat under the effect of pressure regulating subassembly, and form a water channel that can change rivers flux when the valve clack subassembly reciprocates between valve clack subassembly and the valve core seat, valve clack subassembly bottom still is equipped with the buffer spring that makes the valve clack subassembly have the.

When the pressure reducing valve works, the pressure regulating assembly senses the pressure of the water outlet and controls the valve clack assembly to move up and down to change the water flow so as to maintain the constant pressure of the water outlet. However, since the pressure reducing valve can only adjust the pressure in front of and behind the valve, and a user cannot operate the pressure reducing valve to completely shut off the water path like a conventional main valve such as a ball valve, a gate valve, or a stop valve, the pressure reducing valve can be used only as an auxiliary throttling element in a pipeline, and it is necessary to additionally use a main valve in order to shut off the water path at any time.

The combined structure formed by simply connecting the traditional pressure reducing valve and the main valve has the problems of large volume and high space occupancy rate. Therefore, the Chinese patent also provides a constant flow valve with the application number of 201910047495.6, which is characterized in that a control rod is connected with the lower end of the valve body through internal threads on the basis of the pressure reduction function, the control rod is positioned below the valve rod, the lower end of the control rod extends out of the valve body and is used for being operated by a user, when the control rod is rotated by the user, the control rod can move up and down relative to the valve body along the threads, and when the control rod moves up, the upper end surface of the control rod is abutted against the lower end surface of the valve rod to push the valve rod to move up so as to seal the lower end opening of the channel, so that the whole water channel is cut off, which is equivalent to the situation that; when the control rod moves downwards, a gap is formed between the upper end surface of the control rod and the lower end surface of the valve rod, so that the valve rod moves downwards under the action of the spring to open the lower port of the channel, the whole water channel is opened, and the valve can work like a common pressure reducing valve after being opened.

The constant flow valve has the functions of pressure reduction and stopping at the same time, the volume is well reduced, and the space occupancy rate is reduced. However, it also has some disadvantages: the lower end of the control rod extends out of the valve body, so that anyone can operate the control rod at will, the safety is insufficient, and the use requirements of community property management or a tap water company cannot be met, so that the applicability is low and the practical value is not high.

Disclosure of Invention

The utility model aims at the above-mentioned problem that prior art exists, provide a relief pressure valve before multi-functional table, the technical problem that solve is how to improve the safety in utilization when satisfying by with the decompression function.

The purpose of the utility model can be realized by the following technical proposal:

relief pressure valve before multi-functional table, including the valve body and set up in the valve body and can adjust the elasticity pressure reducing component of water pressure, elasticity pressure reducing component includes the decompression core and acts on the relief spring on the decompression core, wears to be equipped with ability pivoted valve rod in the valve body upper end, its characterized in that, be equipped with the lock cap outward in the valve body upper end, be equipped with between lock cap and the valve body and enable both circumference fixed magnetism locking mechanism, valve rod and valve body are fixed with lock cap circumference along the spacing and valve rod upper end of axial, and the lower extreme threaded connection of valve rod has the pressure cover, and the pressure cover is fixed with valve body circumference, and it can promote the elasticity that the decompression spring was overcome to the decompression core and close the relief pressure valve to make.

When the valve is normally used, the water outlet amount in the valve body is controlled by the up-and-down movement of the elastic pressure reducing component, so that the pressure at the water outlet end is kept stable. In the process, the valve body and the lock cap form circumferential fixation through the magnetic locking mechanism, so that other people cannot rotate the valve rod without special tools, and the pressure reduction process is safer and more reliable; when the valve needs to be closed, the magnetic locking mechanism is unlocked by using a special tool, so that the lock cap can rotate relative to the valve body, the valve rod rotates synchronously along with the lock cap, and the pressure sleeve is connected to the lower end of the valve rod through threads and is circumferentially fixed with the valve body through the pressure sleeve, so that the pressure sleeve can move downwards along the threads, the pressure sleeve further pushes the pressure reducing core to move in the direction of overcoming the elasticity of the pressure reducing spring so as to close the pressure reducing valve, and the pressure reducing core does not discharge water any more and has a stop function. After the water outlet is cut off, the special tool is removed, the locking cap and the valve body form circumferential fixation again under the action of the magnetic locking mechanism so that the valve rod cannot rotate, and the cut-off function is safer and more reliable.

This relief pressure valve before multi-functional table passes through lock cap and valve rod, presses cover and valve rod and presses the cooperation of cover and valve body, has realized the decompression, by with the integration of locking function for this relief pressure valve before multi-functional table can play the effect of relief pressure valve and traditional main valve simultaneously, and has improved the security when using well, and application scope is wider, more practical.

In the multifunctional meter front pressure reducing valve, the pressure reducing core is provided with a guide hole, the pressure sleeve is cylindrical, the outer peripheral surface of the upper end of the pressure sleeve is provided with an annular matching part, the annular matching part is circumferentially fixed with the valve body, and the lower end of the pressure sleeve is positioned in the port of the guide hole.

When the pressure is reduced, the lower end of the pressure sleeve is positioned in the port of the guide hole, so that a certain distance is reserved between the lower end face of the pressure sleeve and the bottom wall of the guide hole, and the normal moving range of the elastic pressure reducing assembly during pressure reduction can be ensured; when the pressure reducing valve is closed by rotating the valve rod, the guide hole plays a role in guiding the pressure sleeve, and the pressure sleeve can be ensured to accurately push the pressure reducing core to move so as to isolate the water outlet of the pressure reducing valve.

In the multifunctional meter front pressure reducing valve, a fitting hole which is not a round hole is formed in the upper end of the valve body, the annular fitting part is located in the fitting hole, the shape of the annular fitting part is the same as that of the fitting hole, and the opening depth of the fitting hole is larger than the distance from the upper end surface of the pressure sleeve to the bottom wall of the guide hole.

The degree of depth of seting up of mating holes is greater than the distance that presses the up end of cover to the guiding hole diapire for press under the cover terminal surface and guiding hole diapire to lean on when cyclic annular cooperation portion still is located the mating holes mutually, can avoid pressing the cover to break away from and lead to pressing the unable normal rebound of cover with the valve body like this, guaranteed the validity and the reliability of decompression function.

In foretell relief pressure valve before the multi-functional table, both ends are intake end and outlet end respectively about the valve body, be equipped with the water cavity in the valve body, cross the water cavity and be equipped with the inhalant canal that is linked together with the intake end along vertical direction, the core bar that passes inhalant canal is drawn together to the decompression core, link firmly the baffle under the core bar and be fixed in the manger plate head of core bar upper end, the upper end that keeps off the flood peak is located to the guiding hole, the lower terminal surface that keeps off the flood peak inlays and is equipped with sealed the pad, elasticity pressure reduction subassembly still includes the buffer spring of elasticity downward action on the core that reduces pressure, the elasticity.

In the initial stage, the upper port of the water inlet channel is opened, and water flows into the water passing cavity through the water inlet end and the water inlet channel in sequence and finally flows out from the water outlet end. When the pressure at the water outlet end is overlarge, the sum of the pressure of the water acting on the baffle and the elastic force of the buffer spring is larger than the elastic force of the pressure reducing spring, the water retaining head moves downwards to reduce the flux of the water flow flowing out from the water inlet channel, and the pressure at the water outlet end is reduced accordingly. When the pressure of the water outlet end is smaller, the elastic force of the pressure reducing spring is larger than the sum of the pressure of water acting on the baffle and the elastic force of the buffer spring, so that the water retaining head moves upwards, the flux of water flowing out of the water inlet channel is increased again, and the pressure of the water outlet end is increased accordingly. In the whole water outlet process, the steps are circularly carried out, so that the pressure at the water outlet end is kept stable. When the valve rod is rotated to enable the pressing sleeve to move downwards, the pressing sleeve pushes the water retaining head to overcome the elastic force of the pressure reducing spring to enable the sealing gasket to abut against the surface where the upper port of the water inlet channel is located, and the water outlet of the water inlet channel is cut off to achieve cut-off.

In the preceding relief pressure valve of foretell multifunctional watch, the valve body includes body and threaded connection in the valve cap of body upper end, and in the valve rod was worn to locate the valve cap, the terminal surface was equipped with the cavity under the valve cap, and the roof of cavity is equipped with the annular flange, and the mating holes is located the annular flange inboard, and manger plate head includes base and protrusion in the reference column at base up end center, and on the reference column was located to the guiding hole, buffer spring's upper and lower both ends were overlapped respectively on annular flange and reference column.

The positioning column not only plays a role in positioning the buffer spring, but also is used for being matched with the pressing sleeve, so that the structure is simpler. The arrangement of the annular flange enables the buffer spring and the pressing sleeve to be independent and not interfered with each other, and the effectiveness of the pressure reducing function and the stopping function is guaranteed.

In the relief pressure valve before foretell multifunctional watch, the valve body still includes threaded connection in the valve gap of body lower extreme, valve gap lower extreme opening and valve gap internal thread are connected with the regulation head, the upper end of pressure reduction spring supports at the lower terminal surface of baffle, pressure reduction spring's lower extreme supports at the up end of adjusting the head, this relief pressure valve before multifunctional watch still includes one can cup joint on the lock cap and carry out the key of unblock to magnetism locking mechanism, the up end symmetry of lock cap is provided with two slots, the lower terminal surface symmetry of regulation head is provided with two spread grooves, the key is cylindricly, the external diameter of key slightly is less than the internal diameter of valve gap, the lower terminal surface center of key is equipped with the cooperation chamber, the lower terminal surface symmetry of key is provided with two and.

The key is cylindrical, the outer diameter of the key is slightly smaller than the inner diameter of the valve cover, when the set pressure of the pressure reducing spring needs to be adjusted or the pressure of the water outlet end needs to be adjusted manually, a user can directly insert the key into the valve cover to enable the two pins of the key to be inserted into the two connecting grooves of the adjusting head, and therefore the user can rotate the adjusting head through the key, the adjusting head can move upwards or downwards along threads to compress or release the pressure reducing spring, or the pressure reducing core moves upwards or downwards in the using process. This relief pressure valve before multi-functional table is through setting up the spread groove on adjusting the head for the key can be general the unblock operation of valve rod and the regulation operation of relief spring elasticity, has simplified the structure, has improved user's convenience in use.

In the conventional art, the means for rotating the adjusting head are provided separately, such as a pressure reducing valve disclosed in application No. 201320697106.2, a piston type pressure reducing valve disclosed in application No. 201020153923.8, an adjustable pressure reducing valve disclosed in application No. 200810059912.0, etc., and the multifunction front pressure reducing valve uses a key for unlocking the magnetic locking mechanism for the rotation of the adjusting head, and thus is not a conventional means of those skilled in the art.

In foretell relief pressure valve before multi-functional table, it filters the passageway to go out to be equipped with between water cavity and the water cavity, filter the direction slope of passageway court near water end, the upper end and the water cavity of crossing of filtering the passageway are linked together, the lower extreme lateral part of filtering the passageway is linked together with the import of water end, be equipped with the tube-shape filter screen in the filtration passageway, the inboard of tube-shape filter screen is equipped with elasticity non return subassembly, elasticity non return subassembly includes non return core and non return spring, the lower port threaded connection who filters the passageway has the blanking cover, non return spring both ends lean on with the inboard roof of non return core and the inboard diapire of blanking cover counterbalance respectively, non return core lateral part runs through and is provided with the through-.

With the help of the setting of tube-shape filter screen and elasticity non return subassembly for this relief pressure valve before multi-functional table has integrateed filtration and non return function simultaneously again, and the function is abundanter, practical value is higher and the volume is also littleer simultaneously.

Compared with the prior art, the multifunctional gauge front pressure reducing valve has the following advantages:

1. the integration of pressure reduction, cut-off and locking functions is realized through the matching of the locking cap and the valve rod, the pressure sleeve and the valve rod, and the pressure sleeve and the valve body, so that the multifunctional gauge front pressure reducing valve can simultaneously play the roles of a pressure reducing valve and a traditional main valve, the safety in use is well improved, and the multifunctional gauge front pressure reducing valve is wider in application range and more practical;

2. the key is designed into the unlocking operation of the universal valve rod and the adjusting operation of the elasticity of the pressure reducing spring, so that the structure is simplified, and the use convenience of a user is improved;

3. the setting of tube-shape filter screen and elasticity non return subassembly for this relief pressure valve before multi-functional table has integrateed again simultaneously and has filtered and non return function, and the function is abundanter, practical value is higher and the volume is also littleer simultaneously.

Drawings

FIG. 1 is a schematic view of a multi-function gauge front pressure reducing valve in accordance with one embodiment.

FIG. 2 is a schematic view of the lower end of the pressure reducing valve before the multifunctional meter in the first embodiment when the end cover is not connected.

FIG. 3 is a cross-sectional view of a multi-function gauge front pressure relief valve in accordance with one embodiment.

FIG. 4 is a schematic cross-sectional view of the multi-function gauge front pressure relief valve showing the valve stem, bonnet, clamping sleeve and resilient pressure relief assembly.

FIG. 5 is an exploded view of the valve stem and bonnet of the multifunction front pressure relief valve.

FIG. 6 is a schematic view of a key in the multifunction watch front pressure reducing valve.

Fig. 7 is a schematic view of the multifunctional gauge front pressure reducing valve in the second embodiment.

Fig. 8 is a sectional view of the pressure reducing valve in front of the multifunction timepiece of the second embodiment.

In the figure, 1, a valve body; 1a, a body; 1a1, water inlet end; 1a2, water outlet end; 1a21, flared section; 1a3, water inlet channel; 1a4, filtration channel; 1b, a bonnet; 1b1, mating holes; 1b2, annular flange; 1c, a valve cover; 1d, a water passing cavity; 2. an elastic pressure relief assembly; 2a, a decompression core; 2a1, core bar; 2a2, baffles; 2a3, water retaining head; 2a31, base; 2a32, locating posts; 2a33, pilot hole; 2a4, gasket; 2b, a pressure reducing spring; 2c, a buffer spring; 3. a valve stem; 4. a lock cap; 4a, a slot; 4b, a raised head; 5. a magnetic locking mechanism; 5a, a locking spring; 5b, a cylindrical pin; 5c, magnetic columns; 6. pressing the sleeve; 6a, an annular fitting part; 7. an adjustment head; 7a, connecting grooves; 8. a key; 8a, pins; 8b, a magnet; 8c, a matching cavity; 9. a cylindrical filter screen; 10. an elastic non-return assembly; 10a, a check core; 10a1, vias; 10b, a check spring; 11. an end cap; 12. a clamp spring; 13. a ball core; 14. a handle.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

Example one

As shown in fig. 1-3, the multifunctional meter front pressure reducing valve includes a valve body 1 having a left end and a right end respectively serving as a water inlet end 1a1 and a water outlet end 1a2, a water passing cavity 1d is provided in the valve body 1, the water passing cavity 1d is communicated with the water outlet end 1a2, a water inlet channel 1a3 is provided in the water passing cavity 1d along a vertical direction, the water inlet end 1a1 is communicated with the water inlet channel 1a3, and an elastic pressure reducing component 2 capable of moving up and down is provided in the water inlet channel 1a 3.

As shown in fig. 3 and 4, the elastic pressure reducing assembly 2 includes a pressure reducing core 2a, a pressure reducing spring 2b and a buffer spring 2c, the pressure reducing core 2a includes a core rod 2a1 passing through the water inlet channel 1a3, a baffle 2a2 fixedly connected to the lower end of the core rod 2a1, and a water blocking head 2a3 fixed to the upper end of the core rod 2a1, the upper end of the core rod 2a1 is sleeved with a sealing gasket 2a4, the upper end of the sealing gasket 2a4 is embedded in the lower end of the water blocking head 2a3, the elastic force of the pressure reducing spring 2b acts upward on the baffle 2a1, and the elastic force of the buffer spring 2c acts downward on the water blocking head 2a3 so that the sealing gasket 2a4 closes the upper end port. And a sealing ring is arranged on the outer side of the baffle 2a1, and the outer side wall of the sealing ring is abutted against the inner wall of the valve body 1. The lower end of the valve body 1 is internally threaded with an adjusting head 7, the upper end of a pressure reducing spring 2b abuts against the lower end face of the baffle plate 2a1, the lower end of the pressure reducing spring 2b abuts against the upper end face of the adjusting head 7, and the elastic force of the pressure reducing spring 2b is larger than that of the buffer spring 2 c.

As shown in fig. 3-5, a locking cap 4 is arranged outside the upper end of the valve body 1, a magnetic locking mechanism 5 which can fix the locking cap 4 and the valve body 1 in the circumferential direction is arranged between the locking cap 4 and the valve body 1, a rotatable valve rod 3 is arranged in the upper end of the valve body 1 in an axial penetrating manner, the valve rod 3 and the valve body 1 are fixed in the axial direction, and the upper end of the valve rod 3 penetrates out of the upper end of the valve body 1 and is fixed with the locking cap 4 in the circumferential direction. The lower end of the valve rod 3 is connected with a pressing sleeve 6 in a threaded mode, the pressing sleeve 6 is fixed with the valve body 1 in the circumferential direction, and when the valve rod 3 is rotated, the pressing sleeve 6 can push the water blocking head 2a3 to move downwards.

As shown in fig. 3 to 5, in the present embodiment, the valve body 1 includes a body 1a, a bonnet 1b threadedly coupled to an upper end of the body 1a, and a bonnet 1c threadedly coupled to a lower end of the body 1a, a locking cap 4 axially coupled to the bonnet 1b, and a magnetic locking mechanism 5 provided between the locking cap 4 and the bonnet 1 b. The lower end face of the valve cap 1b is provided with a concave cavity, the top wall of the concave cavity is provided with an annular flange 1b2, the water retaining head 2a3 comprises a base 2a31 and a positioning column 2a32 protruding out of the center of the upper end face of the base 2a31, the sealing gasket 2a4 is embedded in the lower end of the base 2a31, and the upper end and the lower end of the buffer spring 2c are respectively sleeved on the annular flange 1b2 and the positioning column 2a 32.

As shown in fig. 3, a positioning cavity is arranged in the center of the lower end of the locking cap 4, and a positioning head is arranged in the center of the upper end surface of the valve cap 1b and extends into the positioning cavity. The outer peripheral face of the positioning head is provided with a first annular clamping groove, the inner peripheral face of the positioning cavity is correspondingly provided with a second annular clamping groove, a clamp spring 12 is arranged in the first annular clamping groove, the part of the clamp spring 12 is located in the second annular clamping groove, and the outer diameter of the positioning head, which is located above the first annular clamping groove, is larger than the inner diameter of the clamp spring 12. The roof department in location chamber is equipped with the quad slit, and the upper end of valve rod 3 is squarely, and the locating head is worn out and the square downthehole is inserted to the action bars upper end. The upper end face of the valve cap 1b is provided with a first mounting hole, the lower end face of the lock cap 4 is correspondingly provided with a second mounting hole, the magnetic locking mechanism 5 comprises a locking spring 5a and a cylindrical pin 5b which are all arranged in the first mounting hole and a magnetic column 5c arranged in the second mounting hole, and the upper end of the cylindrical pin 5b extends into the second mounting hole under the elasticity of the locking spring 5a and abuts against the lower end face of the magnetic column 5 c.

As shown in fig. 4 and 5, the center of the top wall of the cavity is provided with a fitting hole 1b1 which is not a circular hole, the pressing sleeve 6 is cylindrical, the outer peripheral surface of the upper end of the pressing sleeve 6 is provided with an annular fitting part 6a, the annular fitting part 6a is positioned in the fitting hole 1b1, the shape of the annular fitting part 6a is the same as that of the fitting hole 1b1, and the fitting hole 1b1 is specifically a hexagonal hole. The upper end face of the positioning column 2a32 is provided with a guide hole 2a33, the lower end of the pressing sleeve 6 is positioned in the port of the guide hole 2a33, and the opening depth of the matching hole 1b1 is larger than the distance from the lower end face of the pressing sleeve 6 to the bottom wall of the guide hole 2a 33.

As shown in fig. 1, 2, 3 and 6, the valve cover 1c is open at the lower end, the adjusting head 7 is screwed into the valve cover 1c, and the lower end of the valve cover 1c is screwed with the end cap 11. The multifunctional meter front pressure reducing valve further comprises a key 8 which can be sleeved on the lock cap 4 and used for unlocking the magnetic locking mechanism 5, and a magnet 8b with the same magnetism as the magnetic column 5c is arranged on the lower end face of the key 8. The center of the upper end face of the lock cap 4 is provided with a raised head 4b, the upper end face of the lock cap 4 is symmetrically provided with two slots 4a, the lower end face of the adjusting head 7 is symmetrically provided with two connecting slots 7a, the key 8 is cylindrical, the outer diameter of the key 8 is slightly smaller than the inner diameter of the valve cover 1c, the center of the lower end face of the key 8 is provided with a matching cavity 8c, and the lower end face of the key 8 is symmetrically provided with two pins 8a which can be inserted into the slots 4a or the connecting slots 7 a.

When the magnetic locking mechanism 5 is used as a pressure reducing valve, the locking cap 4 and the valve body 1 are locked by the magnetic locking mechanism 5, so that the valve rod 3 cannot be rotated, the pressure sleeve 6 is separated from the water retaining head 2a3, the elastic force of the pressure reducing spring 2b is greater than the elastic force of the buffer spring 2c, the water retaining head 2a3 moves upwards, the upper port of the water inlet channel 1a3 is opened, and water flows into the water passing cavity 1d through the water inlet end 1a1 and the water inlet channel 1a3 in sequence and finally flows out from the water outlet end 1a 2. When the pressure of the water outlet end 1a2 is too high, the sum of the pressure of the water acting on the baffle 2a1 and the elastic force of the buffer spring 2c is larger than the elastic force of the pressure reducing spring 2b, the pressure reducing spring 2b is compressed, so that the water blocking head 2a3 moves downwards, the flux of the water flow flowing out of the water inlet channel 1a3 is reduced, and the pressure of the water outlet end 1a2 is reduced. When the pressure of the water outlet end 1a2 is lower, the elastic force of the pressure reducing spring 2b is larger than the sum of the pressure of the water acting on the baffle plate 2a1 and the elastic force of the buffer spring 2c, so that the water blocking head 2a3 moves upwards, the flux of the water flowing out from the water inlet channel 1a3 is increased again, and the pressure of the water outlet end 1a2 is increased. The above steps are circulated during the whole water outlet process, so that the pressure of the water outlet end 1a2 is kept stable.

When the valve needs to be closed, the key 8 is sleeved on the lock cap 4, the two pins 8a are inserted into the slots 4a on the lock cap 4, and the key 8 unlocks the magnetic locking mechanism 5, so that a user drives the lock cap 4 to rotate through the key 8. The valve rod 3 rotates along with the locking cap 4, so that the pressing sleeve 6 pushes the water blocking head 2a3 to move downwards together to close the upper port of the water inlet channel 1a3, the whole water channel is cut off, and the stopping function is realized. After the key 8 is taken down, the lock cap 4 is fixed with the valve body 1 through the magnetic locking mechanism 5 again, so that the valve rod 3 cannot be operated to realize the locking function, and the safety of the whole multifunctional meter front pressure reducing valve in use is ensured.

When the key 8 is cylindrical and the set pressure of the pressure reducing spring 2b needs to be adjusted or the pressure of the water outlet end 1a2 needs to be adjusted manually, a user can unscrew the end cover 11, then insert the key 8 into the valve cover 1c to insert the two pins 8a of the key 8 into the two connecting grooves 7a of the adjusting head 7, so that the user can rotate the adjusting head 7 through the key 8, and the adjusting head 7 can move upwards or downwards along the screw thread to compress or release the pressure reducing spring 2b or move the pressure reducing core 2a upwards or downwards in the using process. This relief pressure valve before multi-functional table is through setting up spread groove 7a on adjusting head 7 for the key 8 can general valve rod 3's the unblock operation and the regulation operation of relief spring 2b elasticity, simplified the structure, improved user's convenience in utilization.

A filtering channel 1a4 is arranged between the water outlet end 1a2 and the water passing cavity 1d, and the filtering channel 1a4 inclines towards the direction close to the water outlet end 1a 2. The upper end of the filtering channel 1a4 is communicated with the water passing cavity 1d, and the lower end side of the filtering channel 1a4 is communicated with the inlet of the water outlet end 1a 2. Be equipped with tube-shape filter screen 9 in filtering passageway 1a4, the inboard of tube-shape filter screen 9 is equipped with elasticity non return subassembly 10, and elasticity non return subassembly 10 includes non return core 10a and non return spring 10b, and the lower port threaded connection who filters passageway 1a4 has the blanking cover, and non return spring 10b both ends respectively with the inboard roof of non return core 10a and the inboard diapire counterbalance of blanking cover lean on. The side of the check core 10a is provided with a through hole 10a1, and the communication part of the water outlet end 1a2 and the filtering channel 1a4 is opposite to the through hole 10a 1. With the help of the arrangement of the cylindrical filter screen 9 and the elastic non-return assembly 10, the multifunctional gauge front pressure reducing valve integrates the filtering and non-return functions at the same time, and is richer in function, higher in practical value and smaller in size.

Example two

The structure and principle of this embodiment are basically the same as those of the first embodiment, except that: as shown in fig. 7 and 8, in this embodiment, the end of the water outlet end 1a2 is provided with a flared section 1a21, a control rod and a ball core 13 capable of adjusting the water outlet flow rate of the water outlet end 1a2 are arranged in the flared section 1a21, one end of the control rod is connected with the ball core 13, and the other end of the control rod extends out of the flared section 1a21 and is connected with a handle 14.

The outlet of the water outlet end 1a2 is set to be the flaring section 1a21, and the flaring section 1a21 is internally provided with the control rod and the ball core 13, so that a user can adjust the flow of outlet water, namely, the multifunctional meter front pressure reducing valve integrates the flow adjusting function.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Claims

1. Relief pressure valve before multi-functional table, including valve body (1) and set up in valve body (1) and can adjust water pressure's elasticity pressure reduction subassembly (2), elasticity pressure reduction subassembly (2) are including decompression core (2a) and act on decompression spring (2b) on decompression core (2a), wear to be equipped with in valve body (1) upper end and can rotate valve rod (3), its characterized in that, valve body (1) upper end is equipped with lock cap (4) outward, is equipped with between lock cap (4) and valve body (1) and enables both circumference fixed magnetism locking mechanism (5), and valve rod (3) and valve body (1) are fixed with lock cap (4) circumference along axial spacing and valve rod (3) upper end, and the lower extreme threaded connection of valve rod (3) has pressure cover (6), and pressure cover (6) are fixed with valve body (1) circumference, can make pressure cover (6) promote the elasticity that decompression core (2a) overcome decompression spring (2b) and will close the relief pressure reduction valve when valve rod (3) rotation.

2. The multifunctional watch front pressure reducing valve according to claim 1, characterized in that the pressure reducing core (2a) is provided with a guide hole (2a33), the pressure sleeve (6) is cylindrical, the outer peripheral surface of the upper end of the pressure sleeve (6) is provided with an annular engaging portion (6a), the annular engaging portion (6a) is circumferentially fixed with the valve body (1), and the lower end of the pressure sleeve (6) is located in the port of the guide hole (2a 33).

3. The multifunctional watch front pressure reducing valve according to claim 2, characterized in that a fitting hole (1b1) which is a non-circular hole is formed in the upper end of the valve body (1), the annular fitting portion (6a) is located in the fitting hole (1b1), the shape of the annular fitting portion (6a) is the same as that of the fitting hole (1b1), and the opening depth of the fitting hole (1b1) is larger than the distance from the upper end surface of the pressing sleeve (6) to the bottom wall of the guide hole (2a 33).

4. The multifunctional meter front pressure reducing valve according to claim 3, wherein the left end and the right end of the valve body (1) are respectively a water inlet end (1a1) and a water outlet end (1a2), a water passing cavity (1d) is arranged in the valve body (1), a water inlet channel (1a3) communicated with the water inlet end (1a1) is arranged in the water passing cavity (1d) along the vertical direction, the pressure reducing core (2a) comprises a core rod (2a1) penetrating through the water inlet channel (1a3), a baffle (2a2) fixedly connected with the lower end part of the core rod (2a1) and a water retaining head (2a3) fixed at the upper end part of the core rod (2a1), the guide hole (2a33) is arranged at the upper end of the water retaining head (2a3), a sealing gasket (2a4) is embedded in the lower end surface of the water retaining head (2a3), the elastic pressure reducing component (2) further comprises a buffer spring (2c) acting on the pressure reducing core (2a, the elastic force of the pressure reducing spring (2b) is larger than that of the buffer spring (2 c).

5. The multifunctional watch front pressure reducing valve according to claim 4, wherein the valve body (1) comprises a body (1a) and a valve cap (1b) in threaded connection with the upper end of the body (1a), the valve rod (3) is arranged in the valve cap (1b) in a penetrating manner, a cavity is arranged on the lower end face of the valve cap (1b), an annular flange (1b2) is arranged on the top wall of the cavity, the mating hole (1b1) is located on the inner side of the annular flange (1b2), the water retaining head (2a3) comprises a base (2a31) and a positioning column (352 a32) protruding from the center of the upper end face of the base (2a31), the guide hole (2a33) is arranged on the positioning column (2a32), and the upper end and the lower end of the buffer spring (2c) are respectively sleeved on the annular flange (1b2) and the positioning.

6. The multifunctional front pressure reducing valve for the watch according to claim 5, characterized in that the valve body (1) further comprises a valve cover (1c) which is in threaded connection with the lower end of the body (1a), the lower end of the valve cover (1c) is open, an adjusting head (7) is in threaded connection with the valve cover (1c), the upper end of the pressure reducing spring (2b) abuts against the lower end face of the baffle (2a2), the lower end of the pressure reducing spring (2b) abuts against the upper end face of the adjusting head (7), the multifunctional front pressure reducing valve for the watch further comprises a key (8) which can be sleeved on the lock cap (4) and unlock the magnetic locking mechanism (5), two slots (4a) are symmetrically arranged on the upper end face of the lock cap (4), two connecting slots (7a) are symmetrically arranged on the lower end face of the adjusting head (7), the key (8) is cylindrical, and the outer diameter of the key (8) is, two pins (8a) which can be inserted into the slot (4a) or the connecting slot (7a) are symmetrically arranged on the lower end surface of the key (8).

7. The multifunctional front pressure reducing valve for meters as claimed in claim 4, wherein a filtering channel (1a4) is provided between the water outlet end (1a2) and the water passing cavity (1d), the filtering channel (1a4) is inclined towards the direction close to the water outlet end (1a2), the upper end of the filtering channel (1a4) is communicated with the water passing cavity (1d), the lower end side of the filtering channel (1a4) is communicated with the inlet of the water outlet end (1a2), a cylindrical filtering net (9) is provided in the filtering channel (1a4), an elastic non-return component (10) is provided on the inner side of the cylindrical filtering net (9), the elastic non-return component (10) comprises a non-return core (10a) and a non-return spring (10b), the lower end opening of the filtering channel (1a4) is in threaded connection with a blocking cover, the two ends of the non-return spring (10b) are respectively abutted against the top wall and the bottom wall of the inner side, the side part of the check core (10a) is provided with a through hole (10a1) in a penetrating way, and the communication part of the water outlet end (1a2) and the filtering channel (1a4) is opposite to the through hole (10a 1).