A low-noise air-cooled three-leaf Roots vacuum pump

Abstract

The present invention discloses a low-noise air-cooled three-leaf Roots vacuum pump, comprising a fastening and locking assembly, wherein the fastening and locking assembly comprises an upper top plate, a connecting rod fixedly connected to the middle position of the lower section of the upper top plate, a coupling arranged on the surface of the connecting rod, a gear connected to the bottom position of the connecting rod, a threaded sleeve arranged at the middle position of the bottom end of the gear, a threaded rod slidably connected to the threaded sleeve, a lower bottom plate connected to the bottom of the threaded rod, and a bite piece rotatably contacting one side of the gear. When the vacuum pump is started to work, the vibration generated by the low-noise air-cooled three-leaf Roots vacuum pump is transmitted to the bottom connecting rod through the upper top plate, and the vibration caused by the engagement of the gear and the locking shaft is further buffered by the spring, and the relative sliding of the threaded rod and the threaded sleeve provided at the bottom of the gear further reduces the vibration effect, so that the bottom of the vacuum pump can play a shock-absorbing, buffering and noise-reducing effect on the entire device.

Description

Technical Field

[0001] The invention relates to the technical field of Roots vacuum pumps, in particular to a low-noise air-cooled three-leaf Roots vacuum pump. Background Art

[0002] The three-blade Roots vacuum pump is a positive displacement pump that uses the suction force generated by a pair of rotors rotating in the pump housing to achieve the vacuum effect. It belongs to the medium and low vacuum range. This pump is usually used to remove moisture, oil and dust from materials, and is suitable for conveying materials without solid particles and explosion hazards. It has a simple structure, is easy to manufacture, reliable in use, and has low maintenance and repair requirements. It is one of the types of vacuum pumps widely used in vacuum acquisition devices.

[0003] At present, in the process of using the three-leaf Roots vacuum pump, since the vacuum pump is generally connected to the external equipment by welding, the overall device is relatively stable in this way, but it cannot play the effect of shock reduction and noise reduction. The vacuum pump is generally fastened to the installation body by bolts, but in humid rainy weather, the connecting bolts are exposed to the air and are easily affected by rain erosion, affecting the use. Secondly, when the vacuum pump is working, it will vibrate and make noise, affecting the surrounding environment and causing noise pollution. Since there are two types of Roots vacuum pumps, dry and wet, the dry Roots vacuum pump cannot be cooled by oil or water cooling, which makes the heat dissipation of the pump body ineffective, which is not conducive to improving the heat dissipation. To this end, we propose a low-noise air-cooled three-leaf Roots vacuum pump. Summary of the invention

[0004] The object of the present invention is to provide a low-noise air-cooled three-leaf Roots vacuum pump to solve the problems raised in the above-mentioned background technology.

[0005] To achieve the above-mentioned purpose, the present invention provides the following technical solutions: a low-noise air-cooled three-blade Roots vacuum pump, comprising a vacuum pump body, a sliding mounting assembly is provided below the vacuum pump body, a fastening and locking assembly is provided at the bottom of the sliding mounting assembly, the fastening and locking assembly comprises an upper top plate, a connecting rod fixedly connected to the middle position of the lower section of the upper top plate, a coupling arranged on the surface of the connecting rod, a gear connected to the bottom position of the connecting rod, a threaded outer sleeve arranged at the middle position of the bottom end of the gear, a threaded rod slidably connected to the threaded outer sleeve, a lower bottom plate connected to the bottom of the threaded rod and a bite piece rotatably contacting one side of the gear, and the top of the threaded rod is connected to the bottom of the gear;

[0006] The engaging member includes a support plate connected to one side of the upper end of the lower base plate, a fixed shaft connected to the outer side of the support plate, a push rod arranged at the fixed shaft connection groove, a positioning rod connected to the top of the push rod and a locking shaft connected to the top of the positioning rod.

[0007] Preferably, the positioning rod passes through the inner cavity of the support plate, the fixed shaft is in the shape of a hollow cylinder, and a connecting groove is provided on the middle side of the outer end portion, and the push rod is slidably arranged in the connecting groove.

[0008] Preferably, a support column is fixedly connected to the bottom of the locking shaft, a spring is provided on the side of the positioning rod away from the support column, and both ends of the spring are connected to the support plate and the locking shaft.

[0009] Preferably, the locking shaft is in the shape of a straight plate with a conical top, and the conical portion is in meshing contact with the gear.

[0010] Preferably, the sliding mounting assembly includes a reinforcement block connected to the bottom of the vacuum pump body, a bolt hole opened on one side of the upper surface of the reinforcement block, a sliding groove opened on one side of the reinforcement block, a sliding block slidably connected to the surface of the sliding groove, and a sliding plate connected to the opposite side of the sliding block.

[0011] Preferably, the reinforcement block is fixedly connected to the upper top plate of the bottom, the reinforcement block is in a T-shaped structure and is made of steel, the bolt holes penetrate the upper outer surface of the reinforcement block, the bolt holes are in several groups and are arranged in an array.

[0012] Preferably, the sliding grooves are embedded in the outer surfaces of both sides of the reinforcement block, the sliding grooves are provided in a plurality of groups and arranged in an array, and the sliding blocks are fixedly connected to the sliding plate.

[0013] Preferably, the heat dissipation assembly also includes a mounting plate connected to both sides of the vacuum pump body, a plurality of fins arranged and distributed on the outer wall of the mounting plate, and a plurality of connection holes opened on the vacuum pump body and on both sides of the vacuum pump body.

[0014] Preferably, the connection holes are arranged in a plurality and distributed in an array, and the upper and lower ends are symmetrically arranged, and the upper and lower end surfaces of the mounting plate are slidably arranged with the connection holes through bolts.

[0015] Compared with the prior art, the present invention has the following beneficial effects:

[0016] 1. In the present invention, when the vacuum pump is started to work, the vibration generated is transmitted to the connecting rod at the bottom through the upper top plate, and the vibration received by the engagement of the gear and the locking shaft is further buffered by the spring. The threaded rod provided at the bottom of the gear and the threaded outer sleeve slide relative to each other, further mitigating the vibration effect, so that the bottom of the vacuum pump can play a shock-absorbing and buffering effect on the entire device;

[0017] 2. In the present invention, the slider can move outwards by using the sliding groove as a support, and the slide plate moves with the slider until it reaches the end of the track and stops moving. The support foot of the vacuum pump is installed at the lower end of the reinforcement block, and the fixing bolt is passed through the bolt hole. After the fixing bolt is tightened, the slider can move from outside to inside until it reaches the end of the track and stops moving. The slide plate covers the bolt hole to protect the bolt hole, prevents the bolt from being damaged by rain or other objects, protects the bolt, and facilitates the installation and disassembly process;

[0018] 3. In the present invention, by utilizing the mounting plates and fins provided on the shell surfaces on both sides of the vacuum pump, rapid heat dissipation can be utilized externally, thereby increasing the heat dissipation area of ​​the outer surface of the vacuum pump, so that the vacuum pump can have better heat dissipation capacity.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 It is a schematic diagram of the three-dimensional structure of the present invention;

[0022] Figure 2 Another view of the three-dimensional structure of the present invention;

[0023] Figure 3 It is a schematic diagram of the fastening and locking structure of the present invention;

[0024] Figure 4 A structural view of the bite element of the present invention;

[0025] Figure 5 This is an exploded view of the threaded rod structure of the present invention;

[0026] Figure 6 It is an exploded schematic diagram of the heat dissipation component structure of the present invention;

[0027] Figure 7 This is a structural view of the sliding installation assembly of the present invention;

[0028] Figure 8 For the present invention Figure 7 A schematic diagram of the enlarged structure in the middle;

[0029] In the figure: 1. vacuum pump body; 2. reinforcement block; 3. upper top plate; 4. lower bottom plate; 5. connecting rod; 6. coupling; 7. gear; 8. engaging piece; 801. support plate; 802. fixed shaft; 803. push rod; 804. positioning rod; 805. spring; 806. locking shaft; 807. support column; 9. threaded rod; 10. threaded sleeve; 11. connecting hole; 12. mounting plate; 13. fin; 14. slide plate; 15. bolt hole; 16. slide block; 17. sliding groove. DETAILED DESCRIPTION

[0030] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0031] In the description of the present invention, it should be understood that descriptions involving orientations, such as up, down, front, back, left, right, etc., and orientations or positional relationships indicated are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0032] In the description of the present invention, "several" means one or more, "more" means more than two, "greater than", "less than", "exceed" etc. are understood as not including the number itself, and "above", "below", "within" etc. are understood as including the number itself. If there is a description of "first" or "second", it is only used for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0033] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific content of the technical solution.

[0034] Example

[0035] like Figure 1-8As shown, a low-noise air-cooled three-blade Roots vacuum pump comprises a vacuum pump body 1, a sliding mounting assembly is arranged below the vacuum pump body 1, a fastening and locking assembly is arranged at the bottom of the sliding mounting assembly, the fastening and locking assembly comprises an upper top plate 3, a connecting rod 5 fixedly connected to the middle position of the lower section of the upper top plate 3, a coupling 6 arranged on the surface of the connecting rod 5, a gear 7 connected to the bottom position of the connecting rod 5, a threaded sleeve 10 arranged at the middle position of the bottom end of the gear 7, a threaded rod 9 slidably connected to the threaded sleeve 10, a lower bottom plate 4 connected to the bottom of the threaded rod 9 and a bite piece 8 rotatably contacting one side of the gear 7, and the top of the threaded rod 9 is connected to the bottom of the gear 7;

[0036] The bite part 8 includes a support plate 801 connected to one side of the upper end of the lower base plate 4, a fixed shaft 802 connected to the outside of the support plate 801, a pushing rod 803 arranged at the connecting groove of the fixed shaft 802, a positioning rod 804 connected to the top of the pushing rod 803 and a locking shaft 806 connected to the top of the positioning rod 804.

[0037] Among them, the positioning rod 804 passes through the inner cavity of the support plate 801, the fixed shaft 802 is a hollow cylindrical shape, and a connecting groove is opened on the middle side of the outer end, and the push rod 803 is slidably set in the connecting groove. The positioning rod 804 is inserted into the support plate 801 and can play the effect of moving the locking shaft 806 at the top of the positioning rod 804, so as to facilitate the top of the locking shaft 806 to engage with the gear 7.

[0038] Among them, the bottom of the locking shaft 806 is fixedly connected to a support column 807, and a spring 805 is provided on the side of the positioning rod 804 away from the support column 807, and the two ends of the spring 805 are connected to the support plate 801 and the locking shaft 806. The support column 807 can play a supporting and fixing role, and the spring 805 on one side can buffer and reduce the noise generated, and at the same time prevent the locking shaft 806 from being disordered, and the structure plays a role of buffering and noise reduction.

[0039] The locking shaft 806 is in the shape of a straight plate with a conical top, and the conical portion is in meshing contact with the gear 7 .

[0040] The sliding installation assembly includes a reinforcement block 2 connected to the bottom of the vacuum pump body 1, a bolt hole 15 opened on one side of the upper surface of the reinforcement block 2, a sliding groove 17 opened on one side of the reinforcement block 2, a slider 16 slidably connected to the surface of the sliding groove 17, and a slide plate 14 connected to the opposite side of the slider 16. When the user uses the sliding groove 17 as a support, the slider 16 can move outward, and the slide plate 14 moves with the slider 16 until it reaches the end of the trajectory and stops moving. The support foot of the vacuum pump body 1 is installed at the lower end of the reinforcement block 2, and the fixing bolt is passed through the bolt hole 15. After the fixing bolt is tightened, the slider 16 can move from the outside to the inside until it reaches the end of the trajectory and stops moving. The slide plate 16 covers the bolt hole 15 to protect the bolt hole 15, prevent the bolt from being damaged by erosion by rain or other objects, protect the bolt, and facilitate the installation and disassembly process.

[0041] Among them, the reinforcement block 2 is fixedly connected to the upper top plate 3 at the bottom. The reinforcement block 2 is in a T-shaped structure and is made of steel. The bolt holes 15 pass through the upper outer surface of the reinforcement block 2. The number of bolt holes 15 is several groups and arranged in an array. The reinforcement block 2 is made of steel to improve the stability of the structural material. The multiple bolt holes 15 are used to facilitate the installation and fixation of the vacuum pump body 1.

[0042] The sliding grooves 17 are embedded in the outer surfaces of both sides of the reinforcing block 2 . The number of the sliding grooves 17 is several groups and they are arranged in an array. The sliding blocks 16 and the sliding plates 14 are fixedly connected.

[0043] Among them, the heat dissipation component is also included, and the heat dissipation component includes a mounting plate 12 connected to both sides of the vacuum pump body 1, a plurality of fins 13 arranged and distributed and installed on the outer wall of the mounting plate 12, and a plurality of connection holes 11 opened on the vacuum pump body 1 and opened on both sides of the vacuum pump body 1. A plurality of fins 13 are arranged to increase the external heat dissipation area when the vacuum pump body 1 is dissipated, thereby improving the heat dissipation effect.

[0044] Among them, there are multiple connecting holes 11 arranged and distributed, and the upper and lower ends are symmetrically arranged. The upper and lower end surfaces of the mounting plate 12 are slidably arranged with the connecting holes 11 through bolts. The mounting plate 12 and the bolt connecting holes 11 of this device are fixed to the two side surfaces of the vacuum pump body 1, thereby increasing the stability of the device structure.

[0045] It should be noted that the present invention is a low-noise air-cooled three-blade Roots vacuum pump. When working, the user first uses the sliding groove 17 as a support, and the slider 16 can move outward from the center of the installation structure body, and the slide plate 14 moves with the slider 16 until it reaches the end of the track and stops moving. The support foot of the vacuum pump body 1 is installed at the lower end of the reinforcement block 2, and the fixing bolt is passed through the bolt hole 15. After the fixing bolt is tightened, the user uses the sliding groove 17 as a support, and the slider 16 can move from the outside to the inside until it reaches the end of the track and stops moving. The slide plate 14 covers the bolt hole 15 to protect the bolt hole 15, prevent the bolt from being damaged by erosion by rain or other objects, and protect the bolt, which is convenient for the installation and disassembly of the vacuum pump body 1. When the vacuum pump body 1 is in use, the vacuum pump body The motor of body 1 will generate violent vibration, which will be transmitted to the upper top plate 3 at the bottom through the reinforcement block 2, and the vibration will be further transmitted to the bottom end by the connecting rod 5 connected to the bottom of the upper top plate 3. The generated vibration effect will drive the gear 7 to rotate, and the threaded rod 9 connected to the bottom gear 7 will be relatively slidably connected with the set threaded sleeve 10 to fix it. The locking shaft 806 on one side of the gear 7 will slowly engage with the surface corner of the gear 7. When the frequency of the vibration is higher, the tightening and biting state of the bottom will be tighter. The spring 805 on one side can reduce the buffering of the noise so that the whole device can achieve the effect of shock absorption and noise reduction. When this state is not needed, the push rod 803 can be pushed outward to make the positioning rod 804 disengage and stretch outward. At this time, the locking shaft 806 engaged on the corner of the gear 7 is released from the locked state, and the operation can be completed.

[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A low-noise air-cooled three-leaf Roots vacuum pump, comprising a vacuum pump body (1), characterized in that: A sliding mounting assembly is provided below the vacuum pump body (1), and a fastening and locking assembly is provided at the bottom of the sliding mounting assembly, wherein the fastening and locking assembly comprises an upper top plate (3), a connecting rod (5) fixedly connected to the middle position of the lower section of the upper top plate (3), a coupling (6) arranged on the surface of the connecting rod (5), a gear (7) connected to the bottom position of the connecting rod (5), a threaded sleeve (10) arranged at the middle position of the bottom end of the gear (7), a threaded rod (9) slidably connected to the threaded sleeve (10), a lower bottom plate (4) connected to the bottom of the threaded rod (9), and a bite piece (8) rotatably contacting one side of the gear (7), wherein the top of the threaded rod (9) is connected to the bottom of the gear (7); The engaging member (8) comprises a support plate (801) connected to one side of the upper end of the lower base plate (4), a fixed shaft (802) connected to the outer side of the support plate (801), a push rod (803) arranged at a connection groove of the fixed shaft (802), a positioning rod (804) connected to the top of the push rod (803), and a locking shaft (806) connected to the top of the positioning rod (804).

2. A low-noise air-cooled three-leaf Roots vacuum pump according to claim 1, characterized in that: The positioning rod (804) passes through the inner cavity of the support plate (801); the fixed shaft (802) is in the shape of a hollow cylinder, and a connecting groove is provided at the middle side of the outer end portion; the pushing rod (803) is slidably arranged in the connecting groove.

3. A low-noise air-cooled three-leaf Roots vacuum pump according to claim 1, characterized in that: The bottom of the locking shaft (806) is fixedly connected to a support column (807), a spring (805) is provided on the side of the positioning rod (804) away from the support column (807), and both ends of the spring (805) are connected to the support plate (801) and the locking shaft (806).

4. A low-noise air-cooled three-leaf Roots vacuum pump according to claim 1, characterized in that: The locking shaft (806) is in the shape of a straight plate with a conical top, and the conical portion is in meshing contact with the gear (7).

5. A low-noise air-cooled three-leaf Roots vacuum pump according to claim 1, characterized in that: The sliding installation assembly comprises a reinforcement block (2) connected to the bottom of the vacuum pump body (1), a bolt hole (15) provided on one side of the upper surface of the reinforcement block (2), a sliding groove (17) provided on one side of the reinforcement block (2), a sliding block (16) slidably connected to the surface of the sliding groove (17), and a sliding plate (14) connected to the opposite side of the sliding block (16).

6. A low-noise air-cooled three-leaf Roots vacuum pump according to claim 5, characterized in that: The reinforcing block (2) is fixedly connected to the upper top plate (3) at the bottom; the reinforcing block (2) is in a T-shaped structure and is made of steel; the bolt holes (15) penetrate the outer surface of the upper end of the reinforcing block (2); the bolt holes (15) are in a plurality of groups and are arranged in an array.

7. A low-noise air-cooled three-leaf Roots vacuum pump according to claim 5, characterized in that: The sliding grooves (17) are embedded in the outer surfaces of both sides of the reinforcing block (2). The number of the sliding grooves (17) is a plurality of groups and they are arranged in an array. The sliding blocks (16) and the sliding plates (14) are fixedly connected.

8. A low-noise air-cooled three-leaf Roots vacuum pump according to claim 1, characterized in that: It also includes a heat dissipation component, which includes a mounting plate (12) connected to both sides of the vacuum pump body (1), a plurality of fins (13) arranged and distributed and mounted on the outer wall of the mounting plate (12), and a plurality of connection holes (11) opened on the vacuum pump body (1) and opened on both sides of the vacuum pump body (1).

9. A low-noise air-cooled three-leaf Roots vacuum pump according to claim 8, characterized in that: A plurality of the connection holes (11) are arranged in an arranged manner and symmetrically arranged at the upper and lower ends; the upper and lower end surfaces of the mounting plate (12) are slidably arranged with the connection holes (11) via bolts.

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