CN211501677U

CN211501677U - Valve and fume chamber

Info

Publication number: CN211501677U
Application number: CN201922342577.1U
Authority: CN
Inventors: 彭建昌
Original assignee: Beijing Hanchang Luyuan Environmental Protection Technology Co ltd
Current assignee: Beijing Hanchang Luyuan Environmental Protection Technology Co ltd
Priority date: 2019-12-23
Filing date: 2019-12-23
Publication date: 2020-09-15
Anticipated expiration: 2029-12-23

Abstract

The utility model belongs to the technical field of the valve technique and specifically relates to a valve and fume chamber are related to, including the valve pipe, the intraductal portion of valve is provided with two semicircular valve plates that the structure is the same, one side that two valve plates are close to each other is provided with the axis of rotation, axis of rotation and valve pipe fixed connection, the valve plate rotates with the axis of rotation to be connected, one side of valve plate is provided with two-way lead screw, two-way lead screw rotates with the valve pipe to be connected, be provided with between two-way lead screw and two valve plates and be used for driving two valve plates around the drive assembly that the direction upset that the axis of rotation is close to each other or keeps away from each other, the cost that reduces the valve has been reached, make the fume chamber conveniently adjust the.

Description

Valve and fume chamber

Technical Field

The utility model belongs to the technical field of the valve technique and specifically relates to a valve and fume chamber are related to.

Background

Valves are currently used as plumbing accessories for opening and closing pipes, controlling flow direction, regulating and controlling parameters of the medium being transported (temperature, pressure and flow).

Existing fume hoods are often used in laboratories where harmful gases are generated, the fume hoods are capable of transporting the generated harmful gases to the outside of the laboratory, and one important component of the fume hood to achieve this function is the venturi valve.

The above prior art solutions have the following drawbacks: the existing venturi valve is expensive in manufacturing cost, which is about 7000-8000 yuan, and when the existing venturi valve is used in a fume hood, the cost of the fume hood can be greatly increased.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a valve and fume chamber has reached the cost that reduces the valve, makes the fume chamber convenient adjust exhaust pipe and the inside wind speed of intake pipe, and the effect that the convenience was adjusted the inside valve aperture of fume chamber.

The above technical purpose of the present invention can be achieved by the following technical solutions:

the utility model provides a valve, includes the valve pipe, the intraduct of valve is provided with two semicircular valve plates that the structure is the same, one side that two valve plates are close to each other is provided with the axis of rotation, axis of rotation and valve pipe fixed connection, the valve plate rotates with the axis of rotation to be connected, one side of valve plate is provided with two-way lead screw, two-way lead screw rotates with the valve pipe to be connected, be provided with between two-way lead screw and two valve plates and be used for driving two valve plates and be close to each other or the drive assembly of the.

Through adopting the technical scheme, use the utility model provides a when the valve is controlled atmospheric pressure or gaseous velocity of flow in to the pipeline, two-way lead screw rotates with the valve pipe to be connected, people can rotate two-way lead screw, two-way lead screw can drive the valve plate through drive assembly in the axis of rotation to being close to each other or the orientation upset of keeping away from each other can, the simple structure of valve, and the air velocity and the atmospheric pressure of every position department are roughly the same in the pipeline moreover, just so make atmospheric pressure or velocity of flow value in the pipeline more accurate.

The utility model discloses can further configure to in a preferred example, transmission assembly includes two shift rings, two shift ring all overlap establish on two-way lead screw and with two-way lead screw threaded connection, shift ring and valve plate one-to-one are connected with the connecting rod between shift ring and the valve plate, and the both ends and the valve plate and the shift ring of connecting rod are the rotation and are connected.

Through adopting above-mentioned technical scheme, when people rotate the two-way lead screw, shift ring and two-way lead screw threaded connection, two-way lead screw can drive two shift rings and move to the direction that is close to each other or keeps away from each other on two-way lead screw, and the in-process that the shift ring removed, line length between shift ring and the valve plate can change, and the length of connecting rod can not become, so the connecting rod can drive the valve plate and rotate in the axis of rotation, has just so accomplished the accommodation process to the valve aperture.

The utility model discloses can further configure to in a preferred example, the connecting rod is put at the central point of valve plate and is connected with the valve plate rotation to when the valve plate sealed the valve pipe, two shift rings were located the central point of two-way lead screw and were put or were located the position that is close to two-way lead screw both ends.

Through adopting above-mentioned technical scheme, during rotatory two-way lead screw, the removal ring passes through the connecting rod and drives the valve plate rotatory angle in the axis of rotation bigger, has enlarged the adjustable scope of valve aperture.

The utility model discloses can further configure to in a preferred example, the circumference of valve plate bonds the sealed pad that has the rubber material.

Through adopting above-mentioned technical scheme, sealed the leakproofness that can improve the valve of filling up, reduce gaseous leakage.

The utility model provides a fume chamber, includes the cabinet body, and the internal portion of cabinet has seted up the cavity, and one side of the cabinet body is provided with and is used for sealing or open cabinet door to the cavity, is provided with exhaust pipe and intake pipe on the cabinet body, and the both ends of exhaust pipe and intake pipe all communicate with outdoor and cavity, are provided with the fan in exhaust pipe and the intake pipe, are provided with the valve in exhaust pipe and the intake pipe.

Through adopting above-mentioned technical scheme, when the inside this valve that uses of fume chamber, the inside corrosive gas that has that produces of fume chamber causes the damage after to the valve, and people can directly change the valve, reduce the cost that harmful gas handled.

The utility model discloses can further configure to in a preferred example, the internal portion of cabinet is provided with the rotation motor, rotates and is provided with the gear on the motor, is provided with the rack with gear engaged with on the cabinet door, is provided with between cabinet door and the two-way lead screw and makes two-way lead screw can reciprocate and pivoted linkage subassembly along with the cabinet door.

By adopting the technical scheme, when people need to open or close the cabinet door, the rotating motor is opened, the rotating motor can drive the gear to rotate, the gear is meshed with the rack, and the gear drives the rack and the cabinet door to vertically move on the cabinet body, so that the cabinet door can be opened and closed; be provided with the linkage subassembly between cabinet door and two-way lead screw, so the in-process that the cabinet door reciprocated on the cabinet body, the cabinet door can drive two-way lead screw through the linkage subassembly and rotate, and two-way lead screw pivoted in-process can change the aperture of valve, just so does not need people to adjust the aperture of valve before experimental at every turn, has reached the effect of using manpower sparingly.

The utility model discloses can further configure to in a preferred example, the linkage subassembly includes synchronous pulley, the one end of two-way lead screw extend to the outside of valve pipe and with synchronous pulley fixed connection, be provided with the hold-in range on the synchronous pulley, inside the upper and lower both ends face of cabinet door is connected to the hold-in range.

Through adopting above-mentioned technical scheme, rotate the motor pivoted in-process, can drive the cabinet door and reciprocate, can drive the hold-in range at the internal portion transmission of cabinet when the cabinet door reciprocates, the hold-in range will drive synchronous pulley and rotate like this, and two-way lead screw just can rotate along with synchronous pulley together.

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

1. the valve which drives the valve plate to turn over in the valve pipe to change the opening degree of the valve is arranged, so that the structure is simple, and the cost is low;

2. by the aid of the ventilating hood with the valve, when the valve is damaged, people can directly replace the valve without frequently maintaining the valve, so that the effects of saving time and labor and reducing cost are achieved;

3. through having set up the linkage subassembly, when people opened the cabinet door, the cabinet door can drive two-way lead screw through the linkage subassembly and rotate, and then realizes the regulation to the valve aperture, just so need not people to spend time before experimental at every turn and adjust the aperture of valve, has reached the effect of saving time and manpower.

Drawings

Fig. 1 is an overall structure diagram of a first embodiment of the present invention;

FIG. 2 is a view of the valve of the present invention after the valve tube is hidden;

FIG. 3 is an overall structure diagram of a second embodiment of the present invention;

FIG. 4 is a structural diagram of the middle fume hood of the present invention after the cabinet body is hidden;

fig. 5 is a partially enlarged view of a portion a in fig. 4.

In the figure, 1, a valve; 11. a valve tube; 12. a bidirectional lead screw; 13. a valve plate; 14. a rotating shaft; 15. a transmission assembly; 151. a moving ring; 152. a connecting rod; 2. a gasket; 3. a fume hood; 31. a cabinet body; 32. a cabinet door; 33. an exhaust gas treatment device; 331. an exhaust duct; 332. an air inlet pipe; 333. a fan; 334. an auxiliary tube; 335. a connecting pipe; 336. an air distribution pipe; 34. a chamber; 35. a rack; 36. a gear; 37. rotating the motor; 4. an exhaust hood; 5. a linkage assembly; 51. a synchronous belt; 52. a synchronous pulley.

Detailed Description

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

Example one

Referring to fig. 1 and 2, the utility model provides a valve, including valve pipe 11, valve plate 13, two-way lead screw 12, axis of rotation 14 and drive assembly 15, valve plate 13's cross sectional shape is semi-circular, valve plate 13 is provided with two altogether, two valve plates 13 set up and can seal at valve pipe 11 inside and to valve pipe 11, axis of rotation 14 is fixed inside valve pipe 11, axis of rotation 14 sets up the one side that is close to each other at two valve plates 13, and two valve plates 13 all rotate with axis of rotation 14 and be connected, two-way lead screw 12 sets up the one side at valve plate 13, two-way lead screw 12 sets up and is connected at valve pipe 11 inside and with valve pipe 11 rotation, drive assembly 15 sets up between valve plate 13 and two-way lead screw 12.

In the use process of the valve 1, two ends of the valve pipe 11 are communicated with the inside of the pipeline; if people need adjust the aperture of valve 1, people can be at the inside two-way lead screw 12 of rotatory of valve pipe 11, and two-way lead screw 12 can drive two valve plates 13 through drive assembly 15 and overturn to the direction that is close to each other or keeps away from each other around axis of rotation 14 between the two, just so can realize the regulation to valve 1 aperture.

Referring to fig. 2, in order to improve the sealing property between the valve plate 13 and the valve tube 11, a rubber gasket 2 is bonded to the valve plate 13 in the circumferential direction.

Referring to fig. 2, the transmission assembly 15 includes a moving ring 151 and a connecting rod 152, the moving ring 151 and the connecting rod 152 are both provided with two, two moving rings 151 are symmetrically sleeved on the bidirectional screw 12 and are in threaded connection with the bidirectional screw 12, two connecting rods 152, two moving rings 151 and two valve plates 13 are in one-to-one correspondence, the connecting rod 152 is arranged between the moving ring 151 and the valve plate 13, one end of the connecting rod 152 is rotatably connected with the moving ring 151, the other end is rotatably connected with the valve plate 13 at the central position of the valve plate 13, when the two valve plates 13 seal the valve pipe 11, the two moving rings 151 are located at positions close to two ends of the bidirectional screw 12.

When the valve 1 in the embodiment is connected to a pipeline, the airflow direction of the valve 1 flows from the side of the valve plate 13 close to the bidirectional screw 12 to the side of the valve plate 13 far away from the bidirectional screw 12; when people rotate the bidirectional screw 12, the bidirectional screw 12 can drive the two moving rings 151 to move towards the direction close to each other, the length of a connecting line between the moving rings 151 and the valve plate 13 can be changed in the moving process of the moving rings 151, and the length of the connecting rod 152 cannot be changed, so that the connecting rod 152 can drive the valve plate 13 to rotate on the rotating shaft 14, and the adjusting process of the opening degree of the valve 1 is completed.

Example two

Referring to fig. 3, the utility model provides a ventilation cabinet, including the cabinet body 31, cabinet door 32 and exhaust-gas treatment device 33, cavity 34 has been seted up to one side of the cabinet body 31, and the vertical setting of cabinet door 32 is in one side of the cabinet body 31, and cabinet door 32 can slide and can seal up living to cavity 34 and open on the cabinet body 31 along vertical direction, and exhaust-gas treatment device 33 sets up on the cabinet body 31 and can discharge the outside of the cabinet body 31 with the inside harmful gas that produces of cavity 34.

Referring to fig. 4, the exhaust gas treatment device 33 includes an exhaust pipe 331, an intake pipe 332, a blower 333, two auxiliary pipes 334, a connecting pipe 335, a gas distribution pipe 336 and the valve 1 in the first embodiment, wherein the auxiliary pipes 334 are provided in two, the cross-sectional shape of the auxiliary pipes 334 is annular, the two auxiliary pipes 334 are respectively provided at the upper and lower sides of the chamber 34, the two auxiliary pipes 334 are communicated through the connecting pipe 335, the auxiliary pipe 334 above the chamber 34 and one end of the intake pipe 332 are detachably connected at the outer side of the cabinet 31 using a hoop, one end of the intake pipe 332 far away from the auxiliary pipe 334 is communicated with the outer side of the cabinet 31, and the gas distribution pipe 336 is provided on the auxiliary pipe 334 and one end far away from the auxiliary pipe 334 is; one end of the exhaust pipe 331 is communicated with the chamber 34 inside the cabinet 31, the other end extends to the outside of the fume hood 3, two fans 333 and two valves 1 are arranged, the two fans 333 are respectively arranged on the exhaust pipe 331 and the air inlet pipe 332, and the two valves 1 are respectively arranged on the exhaust pipe 331 and the air inlet pipe 332. When harmful gas generated in the chamber 34 needs to be treated, people firstly adjust the opening degree of the two valves 1 by rotating the bidirectional screw 12, then simultaneously open the exhaust pipe 331 and the fan 333 on the air inlet pipe 332, the fan 333 on the exhaust pipe 331 can discharge the harmful gas in the chamber 34 to the outside of the fume hood 3, and the fan 333 on the air inlet pipe 332 can convey nontoxic air outside the fume hood 3 to the inside of the chamber 34.

Referring to fig. 4, in order to clean the exhaust gas treatment device 33 from the harmful gas more thoroughly, a bell-mouth-shaped exhaust hood 4 is disposed on the end of the exhaust pipe 331 near the chamber 34, and the wide-mouth side of the exhaust hood 4 faces the inside of the chamber 34.

Referring to fig. 4, in order to facilitate people to open or close the cabinet door 32 and further save manpower, a vertical rack 35 is disposed on one side of the cabinet door 32 close to the chamber 34, the rack 35 is slidably connected to the cabinet 31, a gear 36 engaged with the rack 35 is disposed on the rack 35, and a rotating motor 37 for driving the gear 36 to rotate is disposed on the cabinet 31.

Referring to fig. 5, in order to reduce the number of times that a person adjusts the opening degree of the valve 1, an interlocking unit 5 is provided between the cabinet door 32 and the bidirectional screw 12.

Referring to fig. 5, the linkage assembly 5 includes a timing belt 51 and a timing pulley 52, one end of the bidirectional screw 12 extends to the outside of the valve pipe 11 and is fixedly connected to the timing pulley 52 at the center position of the timing pulley 52, the timing belt 51 is disconnected from the position corresponding to the cabinet door 32, and two movable ends of the timing belt 51 are fixedly connected to the upper and lower end faces of the cabinet door 32. Therefore, when people open or close the cabinet door 32, the cabinet door 32 drives the synchronous belt pulley 52 to rotate through the synchronous belt 51, the synchronous belt pulley 52 can drive the bidirectional screw 12 to rotate inside the valve pipe 11, and the opening of the valve 1 is adjusted in the process of opening or closing the cabinet door 32.

The utility model discloses a theory of operation does: before the fume hood 3 is used, people need to adjust the linear relation between the moving distance of the door 32 and the opening degree of the valve 1; after the adjustment is completed, people start the rotating motor 37, and in the process that the rotating motor 37 drives the cabinet door 32 to be opened through the gear 36 and the rack 35, the cabinet door 32 drives the bidirectional screw 12 to rotate through the synchronous belt 51 and the synchronous belt wheel 52, and in the process that the bidirectional screw 12 rotates, the opening degree of the valve 1 can be adjusted; when the fume hood 3 is used, the exhaust pipe 331 and the fan 333 on the air inlet pipe 332 are simultaneously opened, the fan 333 on the exhaust pipe 331 can discharge harmful gas generated inside the chamber 34 to the outside through the exhaust pipe 331, and the fan 333 on the air inlet pipe 332 can convey non-toxic outdoor air to the inside of the chamber 34 through the air inlet pipe 332.

The present embodiment is only for explaining the present invention, and it is not limited to the present invention, and those skilled in the art can make modifications to the present embodiment without inventive contribution as required after reading the present specification, but all of them are protected by patent laws within the scope of the claims of the present invention.

Claims

1. A valve, characterized by: including valve pipe (11), valve pipe (11) inside is provided with two semicircular valve plates (13) that the structure is the same, one side that two valve plates (13) are close to each other is provided with axis of rotation (14), axis of rotation (14) and valve pipe (11) fixed connection, valve plate (13) are rotated with axis of rotation (14) and are connected, one side of valve plate (13) is provided with two-way lead screw (12), two-way lead screw (12) are rotated with valve pipe (11) and are connected, be provided with between two-way lead screw (12) and two valve plates (13) and be used for driving two valve plates (13) around axis of rotation (14) to being close to each other or transmission assembly (15) of the direction upset of keeping.

2. A valve according to claim 1, wherein: the transmission assembly (15) comprises two moving rings (151), the two moving rings (151) are all sleeved on the bidirectional screw rod (12) and are in threaded connection with the bidirectional screw rod (12), the moving rings (151) correspond to the valve plates (13) one to one, a connecting rod (152) is connected between the moving rings (151) and the valve plates (13), and the two ends of the connecting rod (152) are rotatably connected with the valve plates (13) and the moving rings (151).

3. A valve according to claim 2, wherein: the connecting rod (152) is rotatably connected with the valve plate (13) at the central position of the valve plate (13), and when the valve plate (13) seals the valve pipe (11), the two moving rings (151) are positioned at the central position of the bidirectional screw rod (12) or at the positions close to the two ends of the bidirectional screw rod (12).

4. A valve according to claim 1, wherein: a rubber gasket (2) is bonded to the valve plate (13) in the circumferential direction.

5. The utility model provides a fume chamber, includes the cabinet body (31), and cavity (34) have been seted up to cabinet body (31) inside, and one side of the cabinet body (31) is provided with and is used for sealing or open cabinet door (32), its characterized in that to cavity (34): an exhaust duct (331) and an air inlet duct (332) are arranged on the cabinet body (31), two ends of the exhaust duct (331) and the air inlet duct (332) are communicated with the outdoor space and the chamber (34), fans (333) are arranged on the exhaust duct (331) and the air inlet duct (332), and the valve (1) as claimed in any one of claims 1-4 is arranged on the exhaust duct (331) and the air inlet duct (332).

6. A fumehood according to claim 5 wherein: a rotating motor (37) is arranged in the cabinet body (31), a gear (36) is arranged on the rotating motor (37), a rack (35) meshed with the gear (36) is arranged on the cabinet door (32), and a linkage assembly (5) which enables the bidirectional screw rod (12) to rotate along with the up-and-down movement of the cabinet door (32) is arranged between the cabinet door (32) and the bidirectional screw rod (12).

7. A fumehood according to claim 6 wherein: the linkage assembly (5) comprises a synchronous pulley (52), one end of the bidirectional screw rod (12) extends to the outer side of the valve pipe (11) and is fixedly connected with the synchronous pulley (52), a synchronous belt (51) is arranged on the synchronous pulley (52), and the upper end face and the lower end face of the cabinet door (32) are connected to the inside of the synchronous belt (51).