CN213839726U

CN213839726U - Safety valve with quick pressure relief function

Info

Publication number: CN213839726U
Application number: CN202022662637.0U
Authority: CN
Inventors: 查昭; 陈礼宏; 王磊; 何兵
Original assignee: Zhejiang Wandekai Fluid Equipment Technology Co ltd
Current assignee: Zhejiang Wandekai Fluid Equipment Technology Co ltd
Priority date: 2020-11-17
Filing date: 2020-11-17
Publication date: 2021-07-30
Anticipated expiration: 2030-11-17

Abstract

A safety valve with a rapid pressure relief function comprises a valve body, a water inlet joint arranged at the left end of the valve body and a pressure relief joint arranged at the right end of the valve body, wherein a water through cavity is formed in the valve body, the water inlet joint is communicated with the water through cavity through a water inlet hole, the pressure relief joint is communicated with the water through cavity through a pressure relief hole, an opening and closing piece matched with the pressure relief hole is arranged in the pressure relief joint, an orifice at the right end of the pressure relief hole is blocked and sealed by the opening and closing piece, an elastic device matched with the opening and closing piece is arranged in the pressure relief joint, an upper screwed pipe is arranged on the upper surface of the valve body, and the upper screwed pipe is communicated with the water through cavity through an upper connecting hole; the lower surface of the valve body is provided with a lower screw hole which is communicated with the water through cavity through a lower connecting hole. The utility model discloses a relief valve with quick pressure release function can be fast with pressure release when pressure is too high, even the opening and closing piece can't open the very first time when pressure is too high, can realize the effect of quick pressure release equally.

Description

Safety valve with quick pressure relief function

Technical Field

The utility model relates to a relief valve, especially a relief valve with quick pressure release function.

Background

The safety valve is a special valve, wherein the opening and closing part is in a normally closed state under the action of external force, and when the pressure of a medium in equipment or a pipeline rises to exceed a specified value, the medium is discharged to the outside of the system to prevent the pressure of the medium in the pipeline or the equipment from exceeding the specified value.

The opening and closing piece of traditional relief valve all realizes closing the action through the elasticity of spring, when pressure is too high, pressure then can promote the opening and closing piece and extrude the spring, thereby open the opening and closing piece, when pressure recovery is normal, the opening and closing piece resets again under the spring's of spring effect and closes, therefore can know, only spring for perception pressure, and the spring size is different, self elasticity also can have the difference, the spring that has different elasticity then can make different reactions in the face of the same pressure, when elasticity is very big, even relief valve internal pressure is very big, it will open the closing piece to also extremely difficult promotion opening and closing piece, lead to the unable timely release that obtains of pressure, very easily lead to unexpected emergence.

Disclosure of Invention

The utility model aims to solve the current technical problem and provide a relief valve with quick pressure release function, it can be fast with pressure release when pressure is too high, even the very first time of opening and closing member when pressure is too high is opened, can realize the effect of quick pressure release equally.

The utility model provides a technical scheme that above-mentioned technical problem adopted does:

the utility model discloses a relief valve with quick pressure release function, including the valve body, locate the water supply connector of valve body left end and locate the pressure release of valve body right-hand member and connect, be equipped with the logical water cavity in the valve body, the water supply connector link up with the logical water cavity through the inlet opening mutually, the pressure release connects and link up with the logical water cavity through the pressure release hole mutually, be equipped with in the pressure release connector with pressure release hole assorted opening and closing piece, opening and closing piece blocks up pressure release hole right-hand member drill way and seals, be equipped with in the pressure release connector and open and close a assorted resilient means, its characterized in that: the upper surface of the valve body is provided with an upper screwed pipe which is communicated with the water cavity through an upper connecting hole; the lower surface of the valve body is provided with a lower screw hole which is communicated with the water through cavity through a lower connecting hole; the upper screw connection pipe is in screwed connection with an upper pressure relief device, and the upper pressure relief device blocks and seals an orifice at the upper end of the upper connection hole; the lower screw hole is in threaded connection with a lower pressure relief seat matched with the lower screw hole; the center of the upper surface of the lower pressure relief seat is provided with a cylindrical guide post, and the upper end of the guide post sequentially penetrates through the lower connecting hole, the water through cavity and the upper connecting hole upwards and is matched with the upper pressure relief device; the center of the lower surface of the lower pressure relief seat is provided with a pressure relief channel; the outer wall of the guide post at the water through cavity part is provided with an annular fastening groove; the front side and the rear side of the bottom of the fastening groove are provided with symmetrical pressure reduction holes; a rubber sleeve matched with the fastening groove is arranged in the fastening groove; linear holes corresponding to the pressure reduction holes are formed in the front side and the rear side of the rubber sleeve, and the rubber sleeve closes and seals the linear holes through the elasticity of the rubber sleeve; and an auxiliary pressure relief device is screwed at the lower end port of the pressure relief channel.

A plurality of positioning rods which are uniformly distributed in the longitudinal direction are arranged on the left side and the right side of the bottom of the fastening groove; the rubber sleeve is provided with a plurality of positioning holes corresponding to the positioning rods, and the positioning rods penetrate into the positioning holes corresponding to the positioning rods.

The auxiliary pressure relief device comprises a rubber bag, and a screw joint in screw connection with the lower end port of the pressure relief channel is arranged at the upper end port of the rubber bag; the screw joint is provided with a water drainage hole, the inner space of the rubber bag is communicated with the pressure relief channel through the water drainage hole, and the water drainage hole is in a funnel shape with a wide upper part and a narrow lower part; a limiting rod is arranged in the drain hole; the lower end of the limiting rod is connected with the inner wall of the drain hole through a plurality of supporting rods which are uniformly distributed on the circumference; a floating ball matched with the drain hole is arranged in the drain hole, the floating ball blocks and seals the drain hole, and the support rod is positioned below the floating ball; the floating ball is provided with a limiting hole which is coaxial with the limiting rod; a limiting ring is arranged on the inner wall of the pressure relief channel; the upper end of the limiting rod sequentially penetrates through the limiting hole and the limiting ring inner hole upwards; and a small spring sleeved outside the limiting rod is arranged between the lower surface of the limiting ring and the floating ball.

The lower end of the lower pressure relief base is screwed with a limiting cover, and the rubber bag is positioned in the limiting cover.

The upper pressure relief device comprises a pressure relief block arranged in an upper screw connection pipe; a sealing step is formed between the upper screwed pipe and the upper connecting hole, and the pressure relief block is attached to the sealing step; the pressure relief block blocks and seals an orifice at the upper end of the upper connecting hole, a guide hole is formed in the lower surface of the pressure relief block, and the upper end of the guide post penetrates into the guide hole upwards; the upper screw connection pipe is in screwed connection with an upper pressure relief seat; the inner wall of the upper pressure relief seat is provided with a mounting hole; and a large spring is arranged between the bottom of the mounting hole and the upper surface of the pressure relief block.

The elasticity of the small spring is smaller than that of the large spring, and the elasticity of the large spring is smaller than that of the elastic device.

The utility model has the advantages that:

compared with the prior art, adopt the utility model discloses the relief valve with quick pressure release function of structure can be in water pressure too high the very first time with rivers drainage to pressure release channel, even the unable very first time of opening and shutting piece when pressure is too high is opened, can still accomplish the pressure release action through pressure release channel, realize the effect of quick pressure release, can utilize big spring simultaneously, the elasticity of little spring and rubber bag is further cushioned rivers water pressure, guarantee that rivers water pressure can resume normally in the shortest time, effectively avoid rivers water pressure can't in time obtain the release and lead to the unexpected condition of taking place.

Drawings

Fig. 1 is a schematic structural view of a safety valve with a rapid pressure relief function according to the present invention;

FIG. 2 is an enlarged view of section A of FIG. 1;

fig. 3 is a schematic structural view of a part of the safety valve with a rapid pressure relief function of the present invention.

Detailed Description

The invention is described in further detail below with reference to the following figures and detailed description:

referring to fig. 1 to 3, the present invention provides a safety valve with a rapid pressure relief function, including a valve body 1, a water inlet connector 2 disposed at the left end of the valve body 1, and a pressure relief connector 3 disposed at the right end of the valve body 1, wherein a water passage cavity 4 is disposed in the valve body 1, the water inlet connector 2 is communicated with the water passage cavity 4 through a water inlet 5, the pressure relief connector 3 is communicated with the water passage cavity 4 through a pressure relief hole 6, an opening and closing member 7 matched with the pressure relief hole 6 is disposed in the pressure relief connector 3, the opening and closing member 7 blocks and seals the orifice at the right end of the pressure relief hole 6, an elastic device 37 matched with the opening and closing member 7 is disposed in the pressure relief connector 3, an upper screwed pipe 8 is disposed on the upper surface of the valve body 1, and the upper screwed pipe 8 is communicated with the water passage cavity 4 through an upper connecting hole 9; the lower surface of the valve body 1 is provided with a lower screw hole 10, and the lower screw hole 10 is communicated with the water passing cavity 4 through a lower connecting hole 11; the upper screw connection pipe 8 is in threaded connection with an upper pressure relief device, and the upper pressure relief device blocks and seals an orifice at the upper end of the upper connection hole 9; the lower screw hole 10 is in threaded connection with a lower pressure relief seat 12 matched with the lower screw hole; a cylindrical guide post 13 is arranged at the center of the upper surface of the lower pressure relief seat 12, and the upper end of the guide post 13 sequentially penetrates through the lower connecting hole 11, the water passing cavity 4 and the upper connecting hole 9 upwards and is matched with the upper pressure relief device; a pressure relief channel 14 is arranged in the center of the lower surface of the lower pressure relief seat 12; the outer wall of the guide post 13 at the water through cavity 4 is provided with an annular fastening groove 15; the front side and the rear side of the bottom of the fastening groove 15 are provided with symmetrical pressure reduction holes 16; a rubber sleeve 17 matched with the fastening groove 15 is arranged in the fastening groove; linear holes 18 corresponding to the pressure reduction holes 16 are formed in the front side and the rear side of the rubber sleeve 17, and the linear holes 18 are closed and sealed by the rubber sleeve 17 through elasticity of the rubber sleeve; an auxiliary pressure relief device is screwed at the lower end port of the pressure relief channel 14.

A plurality of positioning rods 19 which are uniformly distributed in the longitudinal direction are arranged on the left side and the right side of the bottom of the fastening groove 15; the rubber sleeve 17 is provided with a plurality of positioning holes 20 corresponding to the positioning rods, and the positioning rods 19 penetrate into the positioning holes 20 corresponding to the positioning rods.

The auxiliary pressure relief device comprises a rubber bag 21, and a screw joint 22 which is screwed with the lower end port of the pressure relief channel 14 is arranged at the upper end port of the rubber bag 21; the screw joint 22 is provided with a water drainage hole 23, the inner space of the rubber bag 21 is communicated with the pressure relief channel 14 through the water drainage hole 23, and the water drainage hole 23 is in a funnel shape with a wide upper part and a narrow lower part; a limiting rod 24 is arranged in the drain hole 23; the lower end of the limiting rod 24 is connected with the inner wall of the drain hole 23 through a plurality of supporting rods 25 which are uniformly distributed on the circumference; a floating ball 26 matched with the drain hole 23 is arranged in the drain hole 23, the drain hole 23 is blocked and sealed by the floating ball 26, and the support rod 25 is positioned below the floating ball 26; the floating ball 26 is provided with a limit hole 27 which is coaxial with the limit rod 24; a limiting ring 28 is arranged on the inner wall of the pressure relief channel 14; the upper end of the limiting rod 24 sequentially penetrates through the limiting hole 27 and the inner hole of the limiting ring 28 upwards; a small spring 29 sleeved outside the limiting rod 24 is arranged between the lower surface of the limiting ring 28 and the floating ball 26.

The lower end of the lower pressure relief base 12 is screwed with a limiting cover 30, and the rubber bag 21 is positioned in the limiting cover 30.

The upper pressure relief device comprises a pressure relief block 31 arranged in the upper screw connection pipe 8; a sealing step 32 is formed between the upper screwed pipe 8 and the upper connecting hole 9, and the pressure relief block 31 is attached to the sealing step 32; the pressure relief block 31 blocks and seals the orifice at the upper end of the upper connecting hole 9, the lower surface of the pressure relief block 31 is provided with a guide hole 33, and the upper end of the guide column 13 upwards penetrates into the guide hole 33; the upper screw-connected pipe 8 is in screw connection with an upper pressure relief seat 34; the inner wall of the upper pressure relief seat 34 is provided with a mounting hole 35; and a large spring 36 is arranged between the bottom of the mounting hole 35 and the upper surface of the pressure relief block 31.

The elastic force of the small spring 29 is smaller than that of the large spring 36, and the elastic force of the large spring 36 is smaller than that of the elastic device.

The utility model discloses a use method as follows:

because the guide post 13 is cylindrical, and the water flow flows from the water inlet connector 2 to the pressure relief connector 3, the flow direction of the water flow is from left to right, and the linear holes 18 are arranged at the front side and the rear side of the rubber sleeve 17, when the water pressure is normal, under the guidance of the arc-shaped outer wall of the guide post 13 and the arc-shaped outer wall of the rubber sleeve 17, the pressure of the water flow acting on the linear holes 18 is less than the elastic force of the rubber sleeve 17 for closing the linear holes 18, the linear holes 18 cannot be spread by the water flow, but the difference of the force is very small, once the water flow pressure is higher than a normal little, the pressure of the water flow acting on the linear holes 18 is greater than the elastic force of the rubber sleeve 17 for closing the linear holes 18, at the moment, the water flow extrudes the linear holes 18 to enter the pressure relief holes 16, and then the water flow enters the pressure relief channel 14 through the pressure relief holes 16, and the existence of the pressure relief channel 14 increases the actual volume of the safety valve body 1, along with some rivers in the valve body 1 enter into pressure release channel 14, water pressure in the valve body 1 then can obtain slowing down in the twinkling of an eye, effectively plays the pressure release effect, and when linear hole 18 was crowded to be opened, rubber sleeve 17 took place to warp and produced elasticity, and rubber sleeve 17's elasticity then can directly cushion the rivers pressure in the valve body 1.

Along with the continuous entering of water flow into the pressure relief channel 14, the water level in the pressure relief channel 14 will be raised continuously, at this time, buoyancy will be generated in the pressure relief channel 14, at this time, the buoyancy generated by the water flow is greater than the elastic force of the small spring 29, the floating ball 26 will float upward under the action of the buoyancy and extrude the small spring 29, the extruded small spring 29 will generate elasticity, the elasticity will directly confront the water flow through the floating ball 26, thereby buffering the water flow pressure, playing a pressure relief effect, and along with the floating ball 26 floating upward, the water discharge hole 23 on the screwed joint 22 will not be blocked and sealed by the floating ball 26, the water discharge hole 23 is opened, the water flow in the pressure relief channel 14 will enter the rubber bag 21 through the water discharge hole 23, the existence of the internal space of the rubber bag 21 will further increase the space, the pressure of the water flow can be further released, and along with the continuous entering of the rubber bag 21 along with the subsequent pressure relief water flow, the rubber bag 21 will be expanded and generate elasticity under the action of the water flow pressure and gravity, the elasticity of the rubber bag 21 directly acts on the water flow to effectively buffer the water flow pressure and further reduce the water pressure.

When the water pressure is still too high after being relieved through the relief passage 14, the water flow in the water passage cavity 4 pushes the relief block 31 upwards, at this time, the relief block 31 moves upwards along the track of the inner wall of the upper screw pipe 8, the large spring 36 is squeezed, when the large spring 36 is squeezed, the large spring 36 generates elastic force to effectively buffer the water pressure, the water pressure of the water flow is further reduced, the elastic force of the large spring 36 can be controlled by rotating the upper relief seat 34 to adjust the height of the upper relief seat 34, the lower the height of the upper relief seat 34, the greater the degree of compression of the large spring 36 by the upper relief seat 34 is, the greater the initial elastic force of the large spring 36 is, the greater the water pressure is required to push the relief block 31 upwards, and therefore the initial elastic force of the large spring 36 can be adjusted according to actual needs.

In conclusion, the utility model discloses can be in water pressure too high the very first time with rivers drainage to pressure release channel 14 in, even opening and closing 7 can't the very first time open when pressure is too high, can still accomplish the pressure release action through pressure release channel 14, realize the effect of quick pressure release, can utilize big spring 36 simultaneously, little spring 29 and rubber bag 21's elasticity is to rivers water pressure further buffering, guarantee that rivers water pressure can resume normally in the shortest time, effectively avoid rivers water pressure can't in time obtain the release and lead to the condition of unexpected emergence.

The left side and the right side of the bottom of the fastening groove 15 are provided with a plurality of positioning rods 19 which are longitudinally and uniformly distributed, the rubber sleeve 17 is provided with a plurality of positioning holes 20 corresponding to the positioning rods 19, the positioning rods 19 penetrate into the positioning holes 20 corresponding to the positioning rods 19, the positioning effect can be achieved by matching the positioning rods 19 with the positioning holes 20, and the linear holes 18 in the rubber sleeve 17 are guaranteed to be opposite to the pressure reduction holes 16 all the time.

The lower end of the lower pressure relief base 12 is connected with a limiting cover 30 in a threaded mode, the rubber bag 21 is located in the limiting cover 30, the deformation degree of the rubber bag 21 can be limited due to the existence of the limiting cover 30, and the situation that the rubber bag 21 is too large to be stretched to cause breakage is effectively avoided.

The elasticity of little spring 29 is less than big spring 36's elasticity, and big spring 36's elasticity is less than the elasticity of elastic force device, can form three buffering gears, can the very first time perception different degrees water pressure to improve the sensitivity to the water pressure perception, realize the effect of quick slow pressure.

Claims

1. The utility model provides a relief valve with quick pressure release function, which comprises a valve body, locate the water supply connector of valve body left end and locate the pressure release of valve body right-hand member and connect, be equipped with logical water cavity in the valve body, water supply connector link up mutually with logical water cavity through the inlet opening, the pressure release connects and link up mutually with logical water cavity through the pressure release hole, be equipped with in the pressure release joint with pressure release hole assorted opening and closing piece, opening and closing piece blocks up pressure release hole right-hand member drill way and seals, be equipped with in the pressure release joint and open and close a assorted resilient means, its characterized in that: the upper surface of the valve body is provided with an upper screwed pipe which is communicated with the water cavity through an upper connecting hole; the lower surface of the valve body is provided with a lower screw hole which is communicated with the water through cavity through a lower connecting hole; the upper screw connection pipe is in screwed connection with an upper pressure relief device, and the upper pressure relief device blocks and seals an orifice at the upper end of the upper connection hole; the lower screw hole is in threaded connection with a lower pressure relief seat matched with the lower screw hole; the center of the upper surface of the lower pressure relief seat is provided with a cylindrical guide post, and the upper end of the guide post sequentially penetrates through the lower connecting hole, the water through cavity and the upper connecting hole upwards and is matched with the upper pressure relief device; the center of the lower surface of the lower pressure relief seat is provided with a pressure relief channel; the outer wall of the guide post at the water through cavity part is provided with an annular fastening groove; the front side and the rear side of the bottom of the fastening groove are provided with symmetrical pressure reduction holes; a rubber sleeve matched with the fastening groove is arranged in the fastening groove; linear holes corresponding to the pressure reduction holes are formed in the front side and the rear side of the rubber sleeve, and the rubber sleeve closes and seals the linear holes through the elasticity of the rubber sleeve; and an auxiliary pressure relief device is screwed at the lower end port of the pressure relief channel.

2. The safety valve with a rapid pressure relief function according to claim 1, wherein: a plurality of positioning rods which are uniformly distributed in the longitudinal direction are arranged on the left side and the right side of the bottom of the fastening groove; the rubber sleeve is provided with a plurality of positioning holes corresponding to the positioning rods, and the positioning rods penetrate into the positioning holes corresponding to the positioning rods.

3. The safety valve with a rapid pressure relief function according to claim 1, wherein: the auxiliary pressure relief device comprises a rubber bag, and a screw joint in screw connection with the lower end port of the pressure relief channel is arranged at the upper end port of the rubber bag; the screw joint is provided with a water drainage hole, the inner space of the rubber bag is communicated with the pressure relief channel through the water drainage hole, and the water drainage hole is in a funnel shape with a wide upper part and a narrow lower part; a limiting rod is arranged in the drain hole; the lower end of the limiting rod is connected with the inner wall of the drain hole through a plurality of supporting rods which are uniformly distributed on the circumference; a floating ball matched with the drain hole is arranged in the drain hole, the floating ball blocks and seals the drain hole, and the support rod is positioned below the floating ball; the floating ball is provided with a limiting hole which is coaxial with the limiting rod; a limiting ring is arranged on the inner wall of the pressure relief channel; the upper end of the limiting rod sequentially penetrates through the limiting hole and the limiting ring inner hole upwards; and a small spring sleeved outside the limiting rod is arranged between the lower surface of the limiting ring and the floating ball.

4. The safety valve with a rapid pressure relief function according to claim 3, wherein: the lower end of the lower pressure relief base is screwed with a limiting cover, and the rubber bag is positioned in the limiting cover.

5. The safety valve with a rapid pressure relief function according to claim 3, wherein: the upper pressure relief device comprises a pressure relief block arranged in an upper screw connection pipe; a sealing step is formed between the upper screwed pipe and the upper connecting hole, and the pressure relief block is attached to the sealing step; the pressure relief block blocks and seals an orifice at the upper end of the upper connecting hole, a guide hole is formed in the lower surface of the pressure relief block, and the upper end of the guide post penetrates into the guide hole upwards; the upper screw connection pipe is in screwed connection with an upper pressure relief seat; the inner wall of the upper pressure relief seat is provided with a mounting hole; and a large spring is arranged between the bottom of the mounting hole and the upper surface of the pressure relief block.

6. The safety valve with a rapid pressure relief function according to claim 3, wherein: the elasticity of the small spring is smaller than that of the large spring, and the elasticity of the large spring is smaller than that of the elastic device.