CN204227424U - A kind of jet absorption type Backfire preventing cutting torch - Google Patents
A kind of jet absorption type Backfire preventing cutting torch Download PDFInfo
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- CN204227424U CN204227424U CN201420667934.6U CN201420667934U CN204227424U CN 204227424 U CN204227424 U CN 204227424U CN 201420667934 U CN201420667934 U CN 201420667934U CN 204227424 U CN204227424 U CN 204227424U
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- cut
- groove
- chew
- fire
- pipe
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Abstract
The utility model provides a kind of jet absorption type Backfire preventing cutting torch, belongs to technical field of burner.It solve the problem that anti-backfire performance is good not, cost is high of existing Backfire preventing cutting torch.This jet absorption type Backfire preventing cutting torch, comprise Handleset, cut and chew joint, be arranged on to cut and chew cutting on joint and chew assembly, two ends and be connected to Handleset respectively and cut the mixture pipe chewing joint, described cut to chew in joint fire-stopping pipe is installed, the gaseous mixture infiltrate fire-stopping pipe exported in described mixture pipe is also delivered to cut and chews assembly.This jet absorption type Backfire preventing cutting torch has the advantage that anti-backfire performance is good, structural stability is good.
Description
Technical field
The utility model belongs to technical field of burner, relates to a kind of cutting torch, particularly a kind of jet absorption type Backfire preventing cutting torch.
Background technology
The effect of cutting torch is that oxygen is mixed in proportion with acetylene, form preheat flame, and pure oxygen in high pressure is ejected on cut workpiece, cut metal is burnt in oxygen jet, and oxygen jet also blows away the slag (oxide) that burning generates and form slot.Cutting torch is the main tool of gas cutting workpiece.When gas cutting, gas welding, flame is back into welding torch and continue, in neck or mixing chamber burning, to transfer hiss to recall fire along with flame enters welding torch by explosion.Tempering phenomenon is once occur, light then the explosive sound of ", " occurs in welding torch, serious then weldering, cutting torch can be burnt out and cause acetylene generator explosion accident, often have in actual use and in mixture pipe, produce tempering and explode, the cutting torch at present with fire protecting performance adopts the working method of equal pressure.
Chinese patent CN102759104A discloses a kind of not flame-out efficient Backfire preventing cutting torch, comprise rear portion junctor, the wireway of outer setting handle, mid-section body, cutting oxygen pipe, mixture pipe and cutting torch, rear portion junctor is connected with mid-section body by wireway, connect cutting oxygen pipe and mixture pipe respectively between mid-section body and cutting head joint, between described mixture pipe and cutting head joint, be connected with fireproof tempering device; Described fireproof tempering device is helix assembly, comprises spiral base and spiral bar, and described spiral bar is fastened in described spiral base, and spiral bar one end and spiral base are connected.
Above-mentioned cutting torch adopts fireproof tempering device to be threaded between mixture pipe and cutting head joint in the problem preventing tempering, back-fire arrangement two ends connect and need increase by two joints, easily make the poor sealing of mixture pipe, again because fireproof tempering device is helix assembly, complicated structure, cost is high.
Summary of the invention
The purpose of this utility model there are the problems referred to above for existing technology, proposes the jet absorption type Backfire preventing cutting torch that a kind of anti-backfire performance is good, structural stability is good.
The purpose of this utility model realizes by following technical proposal: a kind of jet absorption type Backfire preventing cutting torch, comprise Handleset, cut and chew joint, be arranged on to cut and chew cutting on joint and chew assembly, two ends and be connected to Handleset respectively and cut the mixture pipe chewing joint, it is characterized in that, described cut to chew in joint fire-stopping pipe is installed, the gaseous mixture infiltrate fire-stopping pipe exported in described mixture pipe is also delivered to cut and chews assembly.
In above-mentioned a kind of jet absorption type Backfire preventing cutting torch, there is tiny air gap channel at the tube wall of fire-stopping pipe in described fire-stopping pipe hollow and both ends open.
In above-mentioned a kind of jet absorption type Backfire preventing cutting torch, describedly cut the groove chewed and joint offers annular, described fire-stopping pipe is arranged in groove and the wall thickness of fire-stopping pipe is less than the width of groove, groove is divided into outer groove and inner groove by described fire-stopping pipe, described outer groove is communicated with mixture pipe and outer groove chews joint sealing with cutting, and described inner groove is communicated to cut chews assembly.
In above-mentioned a kind of jet absorption type Backfire preventing cutting torch, the opening of groove protrudes a circle bayonet socket, and one end of fire-stopping pipe is inserted and is limited in groove, and the other end fixes on bayonet socket.
In above-mentioned a kind of jet absorption type Backfire preventing cutting torch, described cut to chew joint offers oxygen outlet, mixing pore and installing hole, described groove and oxygen outlet coaxial line and be looped around outside oxygen outlet, described cut to chew on assembly offer venthole along axis, described cutting is chewed assembly and to be arranged in installing hole and venthole is communicated to oxygen outlet, described cut to chew on assembly offer mixed airway, described inner groove and mixed airway are interconnected.
In above-mentioned a kind of jet absorption type Backfire preventing cutting torch, described cutting is chewed assembly and is comprised give vent to anger part and air-guide part, described venthole is opened in gives vent to anger on part, described part of giving vent to anger comprises the connecting portion of taper type, the air guide portion of protruding from connecting portion one end and the extension protruded from the connecting portion other end, described connecting portion pushes against and to be sealed on installing hole and air guide portion is sealed to oxygen outlet, cushion chamber is formed between described air guide portion and installing hole, described cushion chamber is communicated to inner groove, described air-guide part to be threaded on part of giving vent to anger and air-guide part and give vent to anger between part and form mixed airway, described connecting portion offers several gas ports, described gas port is communicated with mixed airway and cushion chamber.
In above-mentioned a kind of jet absorption type Backfire preventing cutting torch, described in cut to chew on joint and offer threaded portion, be arranged with locking nut giving vent to anger on part, described locking nut to be resisted against on connecting portion and to be screw-coupled to threaded portion.
In above-mentioned a kind of jet absorption type Backfire preventing cutting torch, between described mixture pipe and Handleset, be also connected with injecting tube.
Compared with prior art, the utility model has following advantage:
1, fire-stopping pipe is set, gaseous mixture can be made to enter into cut along air gap channel and chew assembly, because air gap channel is the characteristic of thin channel, flame can be stoped to pass fire-stopping pipe and enter in mixture pipe the explosion causing mixture pipe, prevent the performance of tempering good, structure is reliable.
2, fire-stopping pipe cylindrical be arranged on to cut chew in joint, monnolithic case is little, and structure is simple, and cost is low.
3, groove is divided into inner groove and outer groove by fire-stopping pipe, and inner groove is communicated with mixed airway, and the width of inner groove is little, the quantity that can effectively stop flame to pass through, plays the effect of only fire, again can quickly through gaseous mixture, do not affect the result of use of cutting torch, structure is ingenious.
4, give vent to anger part with cut the connecting portion 215 chewing joint and adopt conical contact face, good sealing effect.
5, this cutting torch adopts the Backfire preventing cutting torch of jet absorption type, has structure simple, feature easy to use.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model.
Fig. 2 is the structure for amplifying schematic diagram at A place in the utility model.
In figure, 1, cut and chew joint; 11, oxygen outlet; 12, pore is mixed; 13, installing hole; 14, threaded portion; 15, bayonet socket; 16, groove; 161, inner groove; 162, outer groove; 17, cushion chamber; 18, locating slot; 2, cut and chew assembly; 21, to give vent to anger part; 211, venthole; 212, gas port; 213, air guide portion; 214, extension; 215, connecting portion 215; 22, air-guide part; 23, mixed airway; 3, fire-stopping pipe; 4, Handleset; 41, gas valve; 42, oxygen valve; 43, oxygen hose; 44, Gas Pipe; 45, valve body; 5, mixture pipe; 6, cutting oxygen pipe; 7, injecting tube; 8, locking nut; .
Detailed description of the invention
Be below specific embodiment of the utility model and by reference to the accompanying drawings, the technical solution of the utility model is further described, but the utility model be not limited to these embodiments.
As depicted in figs. 1 and 2, this jet absorption type Backfire preventing cutting torch, comprise Handleset 4, cut and chew joint 1, be arranged on to cut and chew cutting on joint 1 and chew assembly 2, two ends are connected to Handleset 4 respectively and cut the mixture pipe 5 and cutting oxygen pipe 6 of chewing joint 1, injecting tube 7 is also connected with between mixture pipe 5 and Handleset 4, Handleset 4 is communicated with oxygen hose 43 and Gas Pipe 44 respectively, Handleset 4 comprises valve body 45 and the oxygen valve 42 be arranged on valve body 45 and gas valve 41, oxygen valve 42 and gas valve 41 control flow and the pressure of oxygen and gaseous mixture respectively, cut to chew in joint 1 and fire-stopping pipe 3 is installed, the gaseous mixture infiltrate fire-stopping pipe 3 exported in mixture pipe 5 is also delivered to cut and chews assembly 2.
Cut the groove 16 chewed and joint 1 offers annular, fire-stopping pipe 3 hollow and both ends open is cylindrical, form as preferably adopting powder of stainless steel particle sintering, tiny air gap channel is there is at the tube wall of fire-stopping pipe 3, gaseous mixture can run through the tube wall of fire-stopping pipe 3 along air gap channel circulation, fire-stopping pipe 3 is arranged in groove 16 and the wall thickness of fire-stopping pipe 3 is less than the width of groove 16, groove 16 is divided into outer groove 162 and inner groove 161 by fire-stopping pipe 3, inner groove 161 is formed between the inner surface of fire-stopping pipe 3 and the inner surface of groove 16, outer groove 162 is formed between the outer surface of fire-stopping pipe 3 and the outer surface of groove 16, the opening of groove 16 protrudes a circle bayonet socket 15, locating slot 18 is offered in the bottom of groove 16, one end of fire-stopping pipe 3 is inserted locating slot 18 and is limited in groove 16, the other end of fire-stopping pipe 3 fixes on bayonet socket 15, outer groove 162 is communicated with mixture pipe 5 and seals between outer groove 162 and bayonet socket 15, gaseous mixture can only flow into the tube wall of fire-stopping pipe 3 by outer groove 162, the tube wall of fire-stopping pipe 3 of going forward side by side is circulated to inner groove 161, inner groove 161 is communicated to cut chews assembly 2.
Install fire-stopping pipe 3 cutting to chew in joint 1, flame, can not in air gap channel combustion not by tiny air gap channel, plays the effect of only fire, prevents flame in mixture pipe 5 implode, prevent the performance of tempering good; Arrange inner groove 161 and outer groove 162, outer groove 162 is looped around outside inner groove 161, is convenient to gaseous mixture and evenly enters inner groove 161 from outer groove 162 infiltrate fire-stopping pipe 3, and then be circulated to cut and chew assembly 2, gas flow communication speed, stable gas pressure, good cutting effect; Fire-stopping pipe 3 is fastened in locating slot 18, easy for installation, and location rapidly.
As shown in Figure 2, cut to chew on joint 1 and offer oxygen outlet 11, mixing pore 12 and installing hole 13, oxygen outlet 11 is communicated to cutting oxygen pipe 6, mixing pore 12 is communicated to mixture pipe 5, the opening part of installing hole 13 is arranged to taper seat, groove 16 is with oxygen outlet 11 coaxial line and be looped around outside oxygen outlet 11, the sidewalls orthogonal of mixing pore 12 and groove 16, cut to chew on assembly 2 and offer venthole 211 along axis, cut and chew assembly 2 and to be arranged in installing hole 13 and venthole 211 is communicated to oxygen outlet 11, cut to chew on assembly 2 and offer mixed airway 23, mixed airway 23 carries gaseous mixture also can light to cutting the end of chewing assembly 2, inner groove 161 and mixed airway 23 are interconnected.
Cut and chew assembly 2 and comprise give vent to anger part 21 and air-guide part 22, venthole 211 is opened in gives vent to anger on part 21, part 21 of giving vent to anger comprises the connecting portion 215 of taper type, the air guide portion 213 of protruding from connecting portion 215 one end and the extension 214 protruded from connecting portion 215 other end, cut to chew on joint 1 and offer threaded portion 14, be arranged with locking nut 8 giving vent to anger on part 21, locking nut 8 is resisted against connecting portion 215 and bores the one end at the end and be screw-coupled to threaded portion 14, connecting portion 215 is pushed against and to be sealed on installing hole 13 and air guide portion 213 is sealed to oxygen outlet 11, the external diameter in air guide portion 213 is less than the internal diameter of installing hole 13, cushion chamber 17 is formed between air guide portion 213 and installing hole 13, cushion chamber 17 is communicated to inner groove 161, air-guide part 22 to be threaded on part 21 of giving vent to anger and to form mixed airway 23 between air-guide part 22 and extension 214, connecting portion 215 evenly offers several gas ports 212, gas port 212 is communicated with mixed airway 23 and cushion chamber 17.
Conical connecting portion 215 is set, gas not easily from cut chew assembly 2 and cut the contact surface chewed between joint 1 reveal, good seal performance; Groove 16 and oxygen outlet 11 coaxial line, offer groove 16 cutting on the lateral wall chewed and offer oxygen outlet 11 in joint 1, simultaneously, the sidewall of the vertical and groove 16 of mixing pore 12 is also communicated in groove 16, thus gaseous mixture can be delivered in groove 16, simple for structure, reduce to cut the volume chewing joint 1 entirety, save material; Arranging cushion chamber 17 can make gaseous mixture converge in cushion chamber 17, keeps the stability that gas exports; Air-guide part 22 is threaded and gives vent to anger on part 21 and form mixed airway 23, and union piece is few, and structure is simple, and mixed airway 23 homogeneity is good, Stability Analysis of Structures.
The utility model in an initial condition, oxygen is from after the oxygen valve 42 Handleset 4 regulates pressure, venthole 211 is entered through oxygen outlet 11 after flowing through cutting oxygen pipe 6, combustion gas enters mixing chamber and mixes with partial oxidation after gas valve 41 regulates, flow velocity is regulated to enter mixture pipe 5 through injecting tube 7, gaseous mixture flow into from mixing pore 12 and around and fill full outer groove 162, then gaseous mixture enters in inner groove 161 through the air gap channel of fire-stopping pipe 3, the gaseous mixture of inner groove 161 converges to cushion chamber 17, the gaseous mixture of cushion chamber 17 enters gas port 212 and flows in mixed airway 23, and have in the outlet of mixed airway 23 and export, mixed airway 23 is concordant with venthole 211, light gaseous mixture, cutting torch can cut steel part, during tempering, because flame is not by the air gap channel of fire-stopping pipe 3, thus, can not fire in mixture pipe 5, security performance is good, and anti-backfire performance is good.
Specific embodiment described herein is only to the explanation for example of the utility model spirit.The utility model person of ordinary skill in the field can make various amendment or supplements or adopt similar mode to substitute to described specific embodiment, but can't depart from spirit of the present utility model or surmount the scope that appended claims defines.
Claims (8)
1. a jet absorption type Backfire preventing cutting torch, comprise Handleset, cut and chew joint, be arranged on to cut and chew cutting on joint and chew assembly, two ends and be connected to Handleset respectively and cut the mixture pipe chewing joint, it is characterized in that, described cut to chew in joint fire-stopping pipe is installed, the gaseous mixture infiltrate fire-stopping pipe exported in described mixture pipe is also delivered to cut and chews assembly.
2. a kind of jet absorption type Backfire preventing cutting torch according to claim 1, is characterized in that, described fire-stopping pipe hollow and both ends open, there is tiny air gap channel at the tube wall of fire-stopping pipe.
3. a kind of jet absorption type Backfire preventing cutting torch according to claim 1 and 2, it is characterized in that, describedly cut the groove chewed and joint offers annular, described fire-stopping pipe is arranged in groove and the wall thickness of fire-stopping pipe is less than the width of groove, groove is divided into outer groove and inner groove by described fire-stopping pipe, described outer groove is communicated with mixture pipe and outer groove chews joint sealing with cutting, and described inner groove is communicated to cut chews assembly.
4. a kind of jet absorption type Backfire preventing cutting torch according to claim 3, is characterized in that, the opening of groove protrudes a circle bayonet socket, and one end of fire-stopping pipe is inserted and is limited in groove, and the other end fixes on bayonet socket.
5. a kind of jet absorption type Backfire preventing cutting torch according to claim 3, it is characterized in that, described cut to chew joint offers oxygen outlet, mixing pore and installing hole, described groove and oxygen outlet coaxial line and be looped around outside oxygen outlet, described cut to chew on assembly offer venthole along axis, described cutting is chewed assembly and to be arranged in installing hole and venthole is communicated to oxygen outlet, described in cut to chew on assembly and offer mixed airway, described inner groove and mixed airway are interconnected.
6. a kind of jet absorption type Backfire preventing cutting torch according to claim 5, it is characterized in that, described cutting is chewed assembly and is comprised give vent to anger part and air-guide part, described venthole is opened in gives vent to anger on part, described part of giving vent to anger comprises the connecting portion of taper type, the air guide portion of protruding from connecting portion one end and the extension protruded from the connecting portion other end, described connecting portion pushes against and to be sealed on installing hole and air guide portion is sealed to oxygen outlet, cushion chamber is formed between described air guide portion and installing hole, described cushion chamber is communicated to inner groove, described air-guide part to be threaded on part of giving vent to anger and air-guide part and give vent to anger between part and form mixed airway, described connecting portion offers several gas ports, described gas port is communicated with mixed airway and cushion chamber.
7. a kind of jet absorption type Backfire preventing cutting torch according to claim 6, is characterized in that, described in cut to chew on joint and offer threaded portion, be arranged with locking nut giving vent to anger on part, described locking nut to be resisted against on connecting portion and to be screw-coupled to threaded portion.
8. a kind of jet absorption type Backfire preventing cutting torch according to claim 1 and 2, is characterized in that, be also connected with injecting tube between described mixture pipe and Handleset.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420667934.6U CN204227424U (en) | 2014-11-10 | 2014-11-10 | A kind of jet absorption type Backfire preventing cutting torch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420667934.6U CN204227424U (en) | 2014-11-10 | 2014-11-10 | A kind of jet absorption type Backfire preventing cutting torch |
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| Publication Number | Publication Date |
|---|---|
| CN204227424U true CN204227424U (en) | 2015-03-25 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420667934.6U Expired - Fee Related CN204227424U (en) | 2014-11-10 | 2014-11-10 | A kind of jet absorption type Backfire preventing cutting torch |
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| CN (1) | CN204227424U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104456563A (en) * | 2014-11-10 | 2015-03-25 | 宁波隆兴焊割科技股份有限公司 | Injection type anti-tempering cutting torch |
-
2014
- 2014-11-10 CN CN201420667934.6U patent/CN204227424U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104456563A (en) * | 2014-11-10 | 2015-03-25 | 宁波隆兴焊割科技股份有限公司 | Injection type anti-tempering cutting torch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150325 Termination date: 20161110 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |