CN212179581U

CN212179581U - Building material flammability test furnace

Info

Publication number: CN212179581U
Application number: CN202020845587.7U
Authority: CN
Inventors: 孙治堃; 孙宝玉; 周小兵
Original assignee: Nanjing Shangyuan Analytical Instrument Co ltd
Current assignee: Nanjing Shangyuan Analytical Instrument Co ltd
Priority date: 2020-05-19
Filing date: 2020-05-19
Publication date: 2020-12-18
Anticipated expiration: 2030-05-19

Abstract

The utility model discloses a building materials flammability test stove uses in building materials test technical field, and its technical scheme main points are: including furnace body and combustor, vertical fixed cover that is provided with along on the roof of furnace body, fixed cover internal rotation is provided with the screw rod that runs through fixed cover, the screw rod is located the part in the furnace body and goes up the thread bush and be equipped with the movable block, the outer wall both sides that fixed cover is located the furnace body are provided with the side ear, the bilateral symmetry of screw rod is provided with the one-level connecting rod, the below symmetry that the both sides of screw rod are located the one-level connecting rod is provided with the second grade connecting rod, the upper end of two one-level connecting rods sets up with two side ear hinges respectively, the lower extreme of two one-level connecting rods sets up with the upper end of two second grade connecting rods is articulated respectively. The utility model discloses the technical effect who has is: the building material to be tested can be stably clamped, so that the accuracy of building material testing is improved.

Description

Building material flammability test furnace

Technical Field

The utility model relates to a building materials test technical field, in particular to building materials flammability test stove.

Background

Materials used in buildings are collectively referred to as construction materials. The combustion performance of the building material refers to all physical and chemical changes generated when the building material is combusted or meets fire, and the performance is measured by the properties of the ignition property, flame propagation property, heating, fuming, charring, weight loss, generation of toxic products and the like of the surface of the material. The national standard GB8624-97 in China classifies the combustion performance of building materials into the following grades: class a, non-combustible building materials; grade B1, flame retardant building materials; class B2, combustible building materials; grade B3, a flammable building material.

Chinese patent with publication number CN205373405U discloses a building flammability test furnace, the structure of which includes a furnace body, a sample hanging rack is arranged in the furnace body, the sample hanging rack includes a support rod and a cross rod, the cross rod is fixed above the support rod, a moving rack capable of moving along the direction of the cross rod is arranged in the furnace body, a vertical upward burner is arranged on the moving rack, and the burner and the cross rod are on the same vertical plane.

The above prior art solutions have the following drawbacks: when the existing building material flammability test furnace is used, a building material to be tested is directly hung on a sample hanging frame, and then flame is sprayed by a burner to burn the building material, so that the combustion performance of the building material can be tested.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a building materials flammability test stove, its advantage is: the building material to be tested can be stably clamped, so that the accuracy of building material testing is improved.

The above technical purpose of the present invention can be achieved by the following technical solutions: a building material flammability test furnace comprises a furnace body and a burner arranged on the bottom wall in the furnace body, wherein a fixed sleeve penetrating through the top wall of the furnace body is vertically arranged on the top wall of the furnace body, the fixed sleeve is right above the burner, a screw penetrating through the fixed sleeve is vertically and rotatably arranged in the fixed sleeve, a moving block is sleeved on the part of the screw in the furnace body in a threaded manner, two side lugs are symmetrically arranged on the two sides of the outer wall of the fixed sleeve in the furnace body, two primary connecting rods are symmetrically arranged on the two sides of the screw, two L-shaped secondary connecting rods are symmetrically arranged below the two primary connecting rods on the two sides of the screw, the upper ends of the two primary connecting rods are respectively hinged with the two side lugs, the lower ends of the two primary connecting rods are respectively hinged with the upper ends of the two secondary connecting rods, and the middle parts of the, two clamping blocks are symmetrically and fixedly arranged at the lower ends of the two secondary connecting rods.

Through the technical scheme, during the use, the operator at first places the building materials of awaiting measuring between two clamp splices, then rotate the screw rod, order about the movable block rebound, the movable block rebound drives two second grade connecting rods rebound, thereby order about two one-level connecting rods and outwards open, two one-level connecting rods outwards open and drive two second grade connecting rod upper ends and also outwards open, thereby the lower extreme of two second grade connecting rods is closed, in order to order about two clamp splices and be close to each other, and will await measuring the building materials centre gripping, and the centre gripping is stable, can improve the accuracy of building materials test.

The utility model discloses further set up to: the furnace body is characterized in that a sliding groove extending towards a furnace door of the furnace body is formed in the top wall of the furnace body, a sliding block is arranged in the sliding groove in a sliding mode, and the fixed sleeve is fixedly arranged on the sliding block and penetrates through the sliding block.

Through above-mentioned technical scheme, the setting of spout and slider for the operator can slide the screw rod to the furnace gate department of furnace body along with the slider, thereby made things convenient for the operator to carry out the centre gripping operation to the building materials that awaits measuring, after waiting to build the material fixed, slide the slider again and make the building materials remove directly over the combustor, can carry out the burning test experiment.

The utility model discloses further set up to: the furnace body is characterized in that side plates extending along the length direction of the sliding groove are arranged on two sides of the sliding groove on the outer top wall of the furnace body, through positioning holes are formed in the side plates along the length direction, threaded holes are formed in two sides of the sliding block, and butterfly screws in threaded fit with the threaded holes penetrate through the positioning holes.

Through the technical scheme, after the building materials to be tested move to the position right above the combustor, an operator respectively screws the two butterfly screws, so that the heads of the two butterfly screws are abutted against the side plates, the sliding blocks can be fixed, the positions of the building materials are limited, and the sliding blocks are prevented from being driven to move under the action of external force, the positions of the building materials are driven to change, and the normal test of the building materials is influenced.

The utility model discloses further set up to: the butterfly screw rod is equipped with the gasket on the part that is located curb plate and deviates from slider one side, the external diameter of gasket is greater than the width of locating hole.

Through the technical scheme, the contact area between the head of the butterfly screw and the side plate is enlarged by the arranged gasket, so that the fixing stability of the butterfly screw to the sliding block is improved.

The utility model discloses further set up to: the top end of the screw rod is fixedly provided with a plum blossom handle.

Through the technical scheme, the plum blossom handle that sets up has made things convenient for the operator to rotate the screw rod, has improved the convenience to building materials centre gripping operation.

The utility model discloses further set up to: two fixing plates are symmetrically arranged on two sides of the screw rod on the sliding block, and tightening screws which are inconsistent with the outer wall of the screw rod are arranged on the two fixing plates in a penetrating mode through threads.

Through the technical scheme, after the two clamping blocks clamp the building material to be tested, an operator screws the two abutting screws again, so that the end parts of the two abutting screws abut against two sides of the screw respectively, the screw is limited from reversing, and the building material is clamped stably.

The utility model discloses further set up to: and a rubber block is fixedly arranged on the end part of the abutting screw.

Through above-mentioned technical scheme, because the block rubber has elasticity, support the screw when screwing up for the block rubber when supporting tightly on the outer wall of screw rod, the block rubber can take place deformation, and the cladding is on the outer wall of screw rod, thereby has increaseed area of contact and the frictional force between the tip of supporting tight screw and the outer wall of screw rod, improves and supports tight screw to the spacing stability of screw rod.

The utility model discloses further set up to: the top of furnace body is provided with the enclosure that covers and establish the spout, the enclosure can be dismantled fixedly with the furnace body roof, the enclosure top is provided with the pipe of discharging fume that extends to outdoors.

Through above-mentioned technical scheme, the smog that produces among the building materials combustion process is discharged to the enclosure through the spout from the furnace body is inside in, finally discharges to outdoor through the pipe of discharging fume to prevent that the smog is direct to be discharged to indoor from the spout, is inhaled by the operator and causes the injury to the operator's health.

To sum up, the utility model discloses following beneficial effect has:

1. the building materials to be tested can be stably clamped by driving the two clamping blocks, so that the accuracy of building material testing is improved;

2. the arrangement of the sliding chute and the sliding block enables an operator to slide the screw to the furnace door of the furnace body along with the sliding block, thereby facilitating the clamping operation of the operator on the building material to be tested;

3. the smog that produces in the building materials combustion process is discharged to outdoor through the tub of discharging fume to guarantee indoor air quality, prevent that smog from directly discharging to indoor from the spout, inhaled by the operator and cause the injury to operator's health.

Drawings

Fig. 1 is a schematic view of the overall structure of the present embodiment.

Fig. 2 is an enlarged view of a portion a in fig. 1.

FIG. 3 is a schematic structural diagram of the furnace body according to the present embodiment.

FIG. 4 is a schematic structural view of the smoke exhaust hood and the smoke exhaust pipe of the present embodiment.

Reference numerals: 1. a furnace body; 2. a burner; 3. fixing a sleeve; 4. a screw; 5. a moving block; 6. a lateral ear; 7. a primary connecting rod; 8. a secondary connecting rod; 9. a clamping block; 10. a chute; 11. a slider; 12. a side plate; 13. positioning holes; 14. a threaded hole; 15. a butterfly screw; 16. a gasket; 17. a plum blossom handle; 18. a fixing plate; 19. tightly abutting the screw; 20. a rubber block; 21. a smoke exhaust hood; 22. a smoke exhaust pipe.

Detailed Description

The present invention will be described in further detail with reference to the accompanying drawings.

Example (b): a building material flammability test furnace, as shown in fig. 1 and fig. 2, comprises a furnace body 1 and a burner 2 arranged on the inner bottom wall of the furnace body 1, wherein a chute 10 extending towards the furnace door of the furnace body 1 is arranged on the top wall of the furnace body 1, a slide block 11 is arranged in the chute 10 in a sliding way, and when the slide block 11 slides to the chute wall of the chute 10 far away from the furnace door of the furnace body 1, the slide block 11 is just above the burner 2. Have the fixed cover 3 of fixing mutually with slider 11 along vertical running through on the slider 11, fixed 3 up end of cover flushes with 11 upper surfaces of slider, and fixed 3 lower terminal surfaces of cover extend slider 11 to stretch to inside the furnace body 1, fixed cover 3 is gone up to have along vertical running through and is rotated the screw rod 4 that sets up with fixed cover 3, and fixed 3 one section distances of fixed cover are all extended at the both ends of screw rod 4.

As shown in fig. 2 and 3, a rectangular moving block 5 is sleeved on the portion of the screw rod 4 located in the furnace body 1 in a threaded manner, two symmetrical side lugs 6 are fixedly arranged on two sides of the outer wall of the portion of the fixed sleeve 3 extending into the furnace body 1, two symmetrical first-stage connecting rods 7 are arranged below the two side lugs 6 on two sides of the screw rod 4, two symmetrical L-shaped second-stage connecting rods 8 are arranged below the two first-stage connecting rods 7 on two sides of the screw rod 4, the upper ends of the two first-stage connecting rods 7 are respectively hinged to the two side lugs 6, the lower ends of the two first-stage connecting rods 7 are respectively hinged to the upper ends of the two second-stage connecting rods 8, the middle portions of the two second-stage connecting rods 8 are respectively hinged to two sides of the moving block 5, and two opposite clamping blocks 9 are fixedly arranged at the lower. In addition, a plum blossom handle 17 is fixedly arranged at one end of the screw rod 4 extending out of the furnace body 1, so that an operator can conveniently rotate the screw rod 4.

Referring to fig. 2 and 3, when the flammability test is performed on the building material, an operator first slides the slide block 11 to the door of the furnace body 1, then the building material to be tested is placed between the two clamping blocks 9, then the screw rod 4 is rotated to drive the moving block 5 to move upwards, the moving block 5 moves upwards to drive the two secondary connecting rods 8 to move upwards, thereby driving the two first-stage connecting rods 7 to be outwards opened, the two first-stage connecting rods 7 are outwards opened to drive the upper ends of the two second-stage connecting rods 8 to be outwards opened, so that the lower ends of the two secondary connecting rods 8 are closed to drive the two clamping blocks 9 to approach each other and stably clamp the building material to be tested, then, the operator slides the slide block 11 back to move the building material to be tested to a position right above the burner 2, the operator ignites the burner 2, the burner 2 sprays flame to the building material to burn the building material, and thus the combustion performance of the building material can be tested. The two clamping blocks 9 can stably and firmly clamp the building materials, so that the accuracy of a building material test can be effectively improved.

As shown in fig. 2, two fixing plates 18 are fixedly disposed on the upper surface of the sliding block 11 and located on two sides of the screw rod 4, and two tightening screws 19 pointing to the screw rod 4 are threaded through the two fixing plates 18, so that when the screw rod 4 is rotated to clamp the building material to be tested by the two clamping blocks 9, an operator respectively screws the two tightening screws 19 to respectively tighten the ends of the two tightening screws 19 on two sides of the screw rod 4, thereby limiting the screw rod 4 from reversing and further improving the clamping stability of the building material. In addition, a cylindrical rubber block 20 is fixedly bonded to the end portion of the tightening screw 19, the rubber block 20 has certain elasticity, and when the tightening screw 19 is tightened, the rubber block 20 deforms and wraps the outer wall of the screw rod 4 when the rubber block 20 is tightened on the outer wall of the screw rod 4, so that the contact area and the friction force between the end portion of the tightening screw 19 and the outer wall of the screw rod 4 are increased, and the limiting stability of the tightening screw 19 on the screw rod 4 is improved.

Referring to fig. 2 and 3, two side plates 12 extending along the length direction of the chute 10 are fixedly arranged on the outer top wall of the furnace body 1 at two sides of the chute 10 (see fig. 1), through positioning holes 13 are formed in the side surfaces of the side plates 12, the positioning holes 13 extend along the length direction of the side plates 12, threaded holes 14 are formed in the side surfaces of the sliding blocks 11 facing the two side plates 12, and butterfly screws 15 inserted into the threaded holes 14 and in threaded fit with the threaded holes 14 penetrate into the positioning holes 13. Therefore, when the sliding block 11 slides to move the building material to be tested to the position right above the burner 2, an operator respectively screws the two butterfly screws 15 to enable the heads of the two butterfly screws 15 to be tightly abutted against the side plate 12, so that the sliding block 11 can be fixed, and the position of the building material is limited, so that the sliding block 11 is prevented from being driven to displace under the action of external force, the position of the building material is driven to change, and the normal test of the building material is influenced. Meanwhile, a metal gasket 16 with the outer diameter larger than the width of the positioning hole 13 is sleeved on the part, located on one side, away from the sliding block 11, of the butterfly screw 15, and the metal gasket 16 enlarges the contact area between the head of the butterfly screw 15 and the side plate 12, so that the fixing stability of the butterfly screw 15 on the sliding block 11 can be improved.

As shown in fig. 4, during the combustion of the building materials, a large amount of smoke is generated, and the smoke is discharged from the furnace body 1 to the outside of the furnace body 1 through the through chute 10 (as shown in fig. 1), but also pollute the indoor air and hurt the body after the operator inhales, in order to avoid the adverse situations, a smoke exhaust hood 21 for covering the sliding chute 10 can be arranged above the furnace body 1, the smoke exhaust hood 21 is conical, the sectional area of the smoke exhaust hood is gradually reduced from bottom to top, the smoke exhaust hood 21 is fixed on the top wall of the furnace body 1 through screws, thereby realizing the disassembly of the smoke exhaust hood 21 and facilitating the clamping operation of the building materials to be tested, the top wall of the smoke exhaust hood 21 is fixedly communicated with a smoke exhaust pipe 22, the smoke exhaust pipe 22 is a plastic hose and extends the smoke exhaust pipe 22 to the outdoor, so that the fumes can be discharged from the chute 10 into the fume hood 21 and finally to the outside through the fume duct 22.

The operation process is as follows: when the building material is subjected to the flammability test, an operator firstly slides the slide block 11 to the furnace door of the furnace body 1, then the building material to be tested is placed between the two clamping blocks 9, then the screw rod 4 is rotated to drive the moving block 5 to move upwards, the moving block 5 moves upwards to drive the two secondary connecting rods 8 to move upwards, thereby driving the two first-stage connecting rods 7 to be outwards opened, the two first-stage connecting rods 7 are outwards opened to drive the upper ends of the two second-stage connecting rods 8 to be outwards opened, so that the lower ends of the two secondary connecting rods 8 are closed to drive the two clamping blocks 9 to approach each other and stably clamp the building material to be tested, then, the operator slides the slide block 11 back to move the building material to be tested to a position right above the burner 2, the operator ignites the burner 2, the burner 2 sprays flame to the building material to burn the building material, and thus the combustion performance of the building material can be tested.

The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.

Claims

1. The utility model provides a building materials flammability test stove, includes furnace body (1) and sets up combustor (2) on the bottom wall in furnace body (1), its characterized in that: the furnace body is characterized in that a fixing sleeve (3) penetrating through the top wall of the furnace body (1) is vertically arranged on the top wall of the furnace body (1), the fixing sleeve (3) is just opposite to the upper part of the combustor (2), a screw rod (4) penetrating through the fixing sleeve (3) is vertically and rotatably arranged in the fixing sleeve (3), a moving block (5) is sleeved on the part of the screw rod (4) positioned in the furnace body (1) in a threaded manner, two side lugs (6) are symmetrically arranged on the two sides of the outer wall of the fixing sleeve (3) positioned in the furnace body (1), two first-stage connecting rods (7) are symmetrically arranged on the two sides of the screw rod (4) positioned below the two first-stage connecting rods (7), two L-shaped second-stage connecting rods (8) are symmetrically arranged, the upper ends of the two first-stage connecting rods (7) are respectively hinged with the two side lugs (6), and the lower ends of the two first-stage connecting, the middle parts of the two secondary connecting rods (8) are respectively hinged to two sides of the moving block (5), and the lower ends of the two secondary connecting rods (8) are symmetrically and fixedly provided with two clamping blocks (9).

2. A building materials flammability test furnace as set forth in claim 1, where: the furnace body is characterized in that a sliding groove (10) extending towards a furnace door of the furnace body (1) is formed in the top wall of the furnace body (1), a sliding block (11) is arranged in the sliding groove (10) in a sliding mode, and the fixed sleeve (3) is fixedly arranged on the sliding block (11) and penetrates through the sliding block (11).

3. A building materials flammability test furnace as set forth in claim 2, where: the furnace body (1) is characterized in that side plates (12) extending along the length direction of the sliding groove (10) are arranged on two sides of the sliding groove (10) on the outer top wall of the furnace body (1), through positioning holes (13) are formed in the side plates (12) along the length direction, threaded holes (14) are formed in two sides of the sliding block (11), and butterfly screws (15) in threaded fit with the threaded holes (14) penetrate through the positioning holes (13).

4. A building materials flammability test furnace as set forth in claim 3, where: the butterfly screw rod (15) is located the portion that the side plate (12) deviates from slider (11) one side and is equipped with gasket (16) on the cover, the external diameter of gasket (16) is greater than the width of locating hole (13).

5. A building materials flammability test furnace as set forth in claim 1, where: the top end of the screw rod (4) is fixedly provided with a plum blossom handle (17).

6. A building materials flammability test furnace as set forth in claim 2, where: two fixing plates (18) are symmetrically arranged on two sides of the screw (4) on the sliding block (11), and tightening screws (19) which are abutted against the outer wall of the screw (4) penetrate through the two fixing plates (18) in a threaded mode.

7. A building materials flammability test furnace as set forth in claim 6, where: the end part of the tightening screw (19) is fixedly provided with a rubber block (20).

8. A building materials flammability test furnace as set forth in claim 2, where: the upper portion of furnace body (1) is provided with to cover and establishes enclosure (21) of spout (10), enclosure (21) and furnace body (1) roof can be dismantled fixedly, enclosure (21) top is provided with and extends to outdoor exhaust pipe (22).